Merge "Check buffer size in useBuffer in software components" into klp-dev am: c65287a08c am: 5dfd2b5d9f am: f84e9b9169 am: 0d7d0ab16e am: 5b89f4af6d am: 49903e4e0d am: 395c7417a7 am: b7d875f570 am: c0fc9412f8 am: 68f3d037b4 am: 3775c0c2ce am: 29ac52e4e8 am: d1c36259d8 am: 9c9386918a
am: 924b20fa49

Change-Id: I2ea0e0a01595908ecc85c06d3cdd5ff82cd03346
diff --git a/Android.bp b/Android.bp
new file mode 100644
index 0000000..53f8bec
--- /dev/null
+++ b/Android.bp
@@ -0,0 +1,20 @@
+ndk_headers {
+    name: "libcamera2ndk_headers",
+    from: "include/camera/ndk/",
+    to: "camera",
+    srcs: ["include/camera/ndk/**/*.h"],
+    license: "NOTICE",
+}
+
+ndk_headers {
+    name: "libmediandk_headers",
+    from: "include/ndk/",
+    to: "media",
+    srcs: ["include/ndk/**/*.h"],
+    license: "NOTICE",
+}
+
+subdirs = [
+    "camera/ndk",
+    "media/*",
+]
diff --git a/CleanSpec.mk b/CleanSpec.mk
index d0890fe..361686c 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -59,6 +59,24 @@
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/lib/libaudiopolicymanager.so)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/SHARED_LIBRARIES/libaudiopolicyservice_intermediates)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/SHARED_LIBRARIES/libaudiopolicymanager_intermediates)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/lib/liboboe.so)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/lib64/liboboe.so)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/STATIC_LIBRARIES/liboboe*)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/SHARED_LIBRARIES/liboboe*)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj_arm/STATIC_LIBRARIES/liboboe*)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj_arm/SHARED_LIBRARIES/liboboe*)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/bin/mediacodec)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/etc/init/mediacodec.rc)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/lib/libeffects.so)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/lib64/libeffects.so)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/SHARED_LIBRARIES/libeffects_intermediates)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/lib/soundfx/libeffectproxy.so)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/lib/soundfx/libldnhncr.so)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/lib/soundfx/libdownmix.so)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/lib/soundfx/libvisualizer.so)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/lib/soundfx/libreverbwrapper.so)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/lib/soundfx/libbundlewrapper.so)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/lib/soundfx/libaudiopreprocessing.so)
 
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
diff --git a/camera/Android.mk b/camera/Android.mk
index 1a3382f..91d87ed 100644
--- a/camera/Android.mk
+++ b/camera/Android.mk
@@ -58,8 +58,6 @@
 	libutils \
 	liblog \
 	libbinder \
-	libhardware \
-	libui \
 	libgui \
 	libcamera_metadata \
 
@@ -67,11 +65,11 @@
 	system/media/camera/include \
 	system/media/private/camera/include \
 	frameworks/native/include/media/openmax \
-	frameworks/av/include/camera
+	$(LOCAL_PATH)/include/camera
 
 LOCAL_EXPORT_C_INCLUDE_DIRS := \
 	system/media/camera/include \
-	frameworks/av/include/camera
+	$(LOCAL_PATH)/include/camera
 
 LOCAL_CFLAGS += -Werror -Wall -Wextra
 
diff --git a/camera/Camera.cpp b/camera/Camera.cpp
index bf9904c..c6c35ef 100644
--- a/camera/Camera.cpp
+++ b/camera/Camera.cpp
@@ -240,6 +240,14 @@
     c->releaseRecordingFrameHandle(handle);
 }
 
+void Camera::releaseRecordingFrameHandleBatch(
+        const std::vector<native_handle_t*> handles) {
+    ALOGV("releaseRecordingFrameHandleBatch");
+    sp <::android::hardware::ICamera> c = mCamera;
+    if (c == 0) return;
+    c->releaseRecordingFrameHandleBatch(handles);
+}
+
 // get preview state
 bool Camera::previewEnabled()
 {
@@ -418,6 +426,37 @@
     }
 }
 
+void Camera::recordingFrameHandleCallbackTimestampBatch(
+        const std::vector<nsecs_t>& timestamps,
+        const std::vector<native_handle_t*>& handles)
+{
+    // If recording proxy listener is registered, forward the frame and return.
+    // The other listener (mListener) is ignored because the receiver needs to
+    // call releaseRecordingFrameHandle.
+    sp<ICameraRecordingProxyListener> proxylistener;
+    {
+        Mutex::Autolock _l(mLock);
+        proxylistener = mRecordingProxyListener;
+    }
+    if (proxylistener != NULL) {
+        proxylistener->recordingFrameHandleCallbackTimestampBatch(timestamps, handles);
+        return;
+    }
+
+    sp<CameraListener> listener;
+    {
+        Mutex::Autolock _l(mLock);
+        listener = mListener;
+    }
+
+    if (listener != NULL) {
+        listener->postRecordingFrameHandleTimestampBatch(timestamps, handles);
+    } else {
+        ALOGW("No listener was set. Drop a batch of recording frames.");
+        releaseRecordingFrameHandleBatch(handles);
+    }
+}
+
 sp<ICameraRecordingProxy> Camera::getRecordingProxy() {
     ALOGV("getProxy");
     return new RecordingProxy(this);
@@ -448,6 +487,12 @@
     mCamera->releaseRecordingFrameHandle(handle);
 }
 
+void Camera::RecordingProxy::releaseRecordingFrameHandleBatch(
+        const std::vector<native_handle_t*>& handles) {
+    ALOGV("RecordingProxy::releaseRecordingFrameHandleBatch");
+    mCamera->releaseRecordingFrameHandleBatch(handles);
+}
+
 Camera::RecordingProxy::RecordingProxy(const sp<Camera>& camera)
 {
     mCamera = camera;
diff --git a/camera/CameraBase.cpp b/camera/CameraBase.cpp
index 8a18d2f..c53e6c3 100644
--- a/camera/CameraBase.cpp
+++ b/camera/CameraBase.cpp
@@ -39,7 +39,7 @@
 
 namespace hardware {
 
-status_t CameraInfo::writeToParcel(Parcel* parcel) const {
+status_t CameraInfo::writeToParcel(android::Parcel* parcel) const {
     status_t res;
     res = parcel->writeInt32(facing);
     if (res != OK) return res;
@@ -47,7 +47,7 @@
     return res;
 }
 
-status_t CameraInfo::readFromParcel(const Parcel* parcel) {
+status_t CameraInfo::readFromParcel(const android::Parcel* parcel) {
     status_t res;
     res = parcel->readInt32(&facing);
     if (res != OK) return res;
@@ -55,8 +55,26 @@
     return res;
 }
 
+status_t CameraStatus::writeToParcel(android::Parcel* parcel) const {
+    auto res = parcel->writeString16(String16(cameraId));
+    if (res != OK) return res;
+
+    res = parcel->writeInt32(status);
+    return res;
 }
 
+status_t CameraStatus::readFromParcel(const android::Parcel* parcel) {
+    String16 tempCameraId;
+    auto res = parcel->readString16(&tempCameraId);
+    if (res != OK) return res;
+    cameraId = String8(tempCameraId);
+
+    res = parcel->readInt32(&status);
+    return res;
+}
+
+} // namespace hardware
+
 namespace {
     sp<::android::hardware::ICameraService> gCameraService;
     const int                 kCameraServicePollDelay = 500000; // 0.5s
@@ -138,7 +156,7 @@
         c->mStatus = NO_ERROR;
     } else {
         ALOGW("An error occurred while connecting to camera %d: %s", cameraId,
-                (cs != nullptr) ? "Service not available" : ret.toString8().string());
+                (cs == nullptr) ? "Service not available" : ret.toString8().string());
         c.clear();
     }
     return c;
@@ -239,24 +257,6 @@
     return res.isOk() ? OK : res.serviceSpecificErrorCode();
 }
 
-template <typename TCam, typename TCamTraits>
-status_t CameraBase<TCam, TCamTraits>::addServiceListener(
-        const sp<::android::hardware::ICameraServiceListener>& listener) {
-    const sp<::android::hardware::ICameraService>& cs = getCameraService();
-    if (cs == 0) return UNKNOWN_ERROR;
-    binder::Status res = cs->addListener(listener);
-    return res.isOk() ? OK : res.serviceSpecificErrorCode();
-}
-
-template <typename TCam, typename TCamTraits>
-status_t CameraBase<TCam, TCamTraits>::removeServiceListener(
-        const sp<::android::hardware::ICameraServiceListener>& listener) {
-    const sp<::android::hardware::ICameraService>& cs = getCameraService();
-    if (cs == 0) return UNKNOWN_ERROR;
-    binder::Status res = cs->removeListener(listener);
-    return res.isOk() ? OK : res.serviceSpecificErrorCode();
-}
-
 template class CameraBase<Camera>;
 
 } // namespace android
diff --git a/camera/CameraMetadata.cpp b/camera/CameraMetadata.cpp
index 373b94e..e143e05 100644
--- a/camera/CameraMetadata.cpp
+++ b/camera/CameraMetadata.cpp
@@ -170,7 +170,7 @@
 }
 
 status_t CameraMetadata::checkType(uint32_t tag, uint8_t expectedType) {
-    int tagType = get_camera_metadata_tag_type(tag);
+    int tagType = get_local_camera_metadata_tag_type(tag, mBuffer);
     if ( CC_UNLIKELY(tagType == -1)) {
         ALOGE("Update metadata entry: Unknown tag %d", tag);
         return INVALID_OPERATION;
@@ -178,7 +178,7 @@
     if ( CC_UNLIKELY(tagType != expectedType) ) {
         ALOGE("Mismatched tag type when updating entry %s (%d) of type %s; "
                 "got type %s data instead ",
-                get_camera_metadata_tag_name(tag), tag,
+                get_local_camera_metadata_tag_name(tag, mBuffer), tag,
                 camera_metadata_type_names[tagType],
                 camera_metadata_type_names[expectedType]);
         return INVALID_OPERATION;
@@ -297,7 +297,7 @@
         ALOGE("%s: CameraMetadata is locked", __FUNCTION__);
         return INVALID_OPERATION;
     }
-    int type = get_camera_metadata_tag_type(tag);
+    int type = get_local_camera_metadata_tag_type(tag, mBuffer);
     if (type == -1) {
         ALOGE("%s: Tag %d not found", __FUNCTION__, tag);
         return BAD_VALUE;
@@ -332,8 +332,9 @@
 
     if (res != OK) {
         ALOGE("%s: Unable to update metadata entry %s.%s (%x): %s (%d)",
-                __FUNCTION__, get_camera_metadata_section_name(tag),
-                get_camera_metadata_tag_name(tag), tag, strerror(-res), res);
+                __FUNCTION__, get_local_camera_metadata_section_name(tag, mBuffer),
+                get_local_camera_metadata_tag_name(tag, mBuffer), tag,
+                strerror(-res), res);
     }
 
     IF_ALOGV() {
@@ -392,16 +393,18 @@
     } else if (res != OK) {
         ALOGE("%s: Error looking for entry %s.%s (%x): %s %d",
                 __FUNCTION__,
-                get_camera_metadata_section_name(tag),
-                get_camera_metadata_tag_name(tag), tag, strerror(-res), res);
+                get_local_camera_metadata_section_name(tag, mBuffer),
+                get_local_camera_metadata_tag_name(tag, mBuffer),
+                tag, strerror(-res), res);
         return res;
     }
     res = delete_camera_metadata_entry(mBuffer, entry.index);
     if (res != OK) {
         ALOGE("%s: Error deleting entry %s.%s (%x): %s %d",
                 __FUNCTION__,
-                get_camera_metadata_section_name(tag),
-                get_camera_metadata_tag_name(tag), tag, strerror(-res), res);
+                get_local_camera_metadata_section_name(tag, mBuffer),
+                get_local_camera_metadata_tag_name(tag, mBuffer),
+                tag, strerror(-res), res);
     }
     return res;
 }
diff --git a/camera/CameraUtils.cpp b/camera/CameraUtils.cpp
index 1676be1..67fc116 100644
--- a/camera/CameraUtils.cpp
+++ b/camera/CameraUtils.cpp
@@ -45,7 +45,7 @@
     }
 
     camera_metadata_ro_entry_t entryFacing = staticInfo.find(ANDROID_LENS_FACING);
-    if (entry.count == 0) {
+    if (entryFacing.count == 0) {
         ALOGE("%s: Can't find android.lens.facing in static metadata!", __FUNCTION__);
         return INVALID_OPERATION;
     }
diff --git a/camera/CaptureResult.cpp b/camera/CaptureResult.cpp
index 0a447e7..e6c0d00 100644
--- a/camera/CaptureResult.cpp
+++ b/camera/CaptureResult.cpp
@@ -26,7 +26,7 @@
     return requestId >= 0;
 }
 
-status_t CaptureResultExtras::readFromParcel(const Parcel *parcel) {
+status_t CaptureResultExtras::readFromParcel(const android::Parcel *parcel) {
     if (parcel == NULL) {
         ALOGE("%s: Null parcel", __FUNCTION__);
         return BAD_VALUE;
@@ -43,7 +43,7 @@
     return OK;
 }
 
-status_t CaptureResultExtras::writeToParcel(Parcel *parcel) const {
+status_t CaptureResultExtras::writeToParcel(android::Parcel *parcel) const {
     if (parcel == NULL) {
         ALOGE("%s: Null parcel", __FUNCTION__);
         return BAD_VALUE;
@@ -69,7 +69,7 @@
     mMetadata = otherResult.mMetadata;
 }
 
-status_t CaptureResult::readFromParcel(Parcel *parcel) {
+status_t CaptureResult::readFromParcel(android::Parcel *parcel) {
 
     ALOGV("%s: parcel = %p", __FUNCTION__, parcel);
 
@@ -100,7 +100,7 @@
     return OK;
 }
 
-status_t CaptureResult::writeToParcel(Parcel *parcel) const {
+status_t CaptureResult::writeToParcel(android::Parcel *parcel) const {
 
     ALOGV("%s: parcel = %p", __FUNCTION__, parcel);
 
diff --git a/camera/ICamera.cpp b/camera/ICamera.cpp
index 0680d7c..f0945c7 100644
--- a/camera/ICamera.cpp
+++ b/camera/ICamera.cpp
@@ -55,12 +55,13 @@
     SET_VIDEO_BUFFER_MODE,
     SET_VIDEO_BUFFER_TARGET,
     RELEASE_RECORDING_FRAME_HANDLE,
+    RELEASE_RECORDING_FRAME_HANDLE_BATCH,
 };
 
 class BpCamera: public BpInterface<ICamera>
 {
 public:
-    BpCamera(const sp<IBinder>& impl)
+    explicit BpCamera(const sp<IBinder>& impl)
         : BpInterface<ICamera>(impl)
     {
     }
@@ -172,6 +173,24 @@
         native_handle_delete(handle);
     }
 
+    void releaseRecordingFrameHandleBatch(const std::vector<native_handle_t*>& handles) {
+        ALOGV("releaseRecordingFrameHandleBatch");
+        Parcel data, reply;
+        data.writeInterfaceToken(ICamera::getInterfaceDescriptor());
+        uint32_t n = handles.size();
+        data.writeUint32(n);
+        for (auto& handle : handles) {
+            data.writeNativeHandle(handle);
+        }
+        remote()->transact(RELEASE_RECORDING_FRAME_HANDLE_BATCH, data, &reply);
+
+        // Close the native handle because camera received a dup copy.
+        for (auto& handle : handles) {
+            native_handle_close(handle);
+            native_handle_delete(handle);
+        }
+    }
+
     status_t setVideoBufferMode(int32_t videoBufferMode)
     {
         ALOGV("setVideoBufferMode: %d", videoBufferMode);
@@ -378,6 +397,19 @@
             releaseRecordingFrameHandle(data.readNativeHandle());
             return NO_ERROR;
         } break;
+        case RELEASE_RECORDING_FRAME_HANDLE_BATCH: {
+            ALOGV("RELEASE_RECORDING_FRAME_HANDLE_BATCH");
+            CHECK_INTERFACE(ICamera, data, reply);
+            // releaseRecordingFrameHandle will be responsble to close the native handle.
+            uint32_t n = data.readUint32();
+            std::vector<native_handle_t*> handles;
+            handles.reserve(n);
+            for (uint32_t i = 0; i < n; i++) {
+                handles.push_back(data.readNativeHandle());
+            }
+            releaseRecordingFrameHandleBatch(handles);
+            return NO_ERROR;
+        } break;
         case SET_VIDEO_BUFFER_MODE: {
             ALOGV("SET_VIDEO_BUFFER_MODE");
             CHECK_INTERFACE(ICamera, data, reply);
diff --git a/camera/ICameraClient.cpp b/camera/ICameraClient.cpp
index 68cbfb8..7e6297c 100644
--- a/camera/ICameraClient.cpp
+++ b/camera/ICameraClient.cpp
@@ -32,12 +32,13 @@
     DATA_CALLBACK,
     DATA_CALLBACK_TIMESTAMP,
     RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP,
+    RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP_BATCH,
 };
 
 class BpCameraClient: public BpInterface<ICameraClient>
 {
 public:
-    BpCameraClient(const sp<IBinder>& impl)
+    explicit BpCameraClient(const sp<IBinder>& impl)
         : BpInterface<ICameraClient>(impl)
     {
     }
@@ -91,6 +92,29 @@
         remote()->transact(RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP, data, &reply,
                 IBinder::FLAG_ONEWAY);
     }
+
+    void recordingFrameHandleCallbackTimestampBatch(
+            const std::vector<nsecs_t>& timestamps,
+            const std::vector<native_handle_t*>& handles) {
+        ALOGV("recordingFrameHandleCallbackTimestampBatch");
+        Parcel data, reply;
+        data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
+        uint32_t n = timestamps.size();
+        if (n != handles.size()) {
+            ALOGE("%s: size of timestamps(%zu) and handles(%zu) mismatch!",
+                    __FUNCTION__, timestamps.size(), handles.size());
+            return;
+        }
+        data.writeUint32(n);
+        for (auto ts : timestamps) {
+            data.writeInt64(ts);
+        }
+        for (auto& handle : handles) {
+            data.writeNativeHandle(handle);
+        }
+        remote()->transact(RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP_BATCH, data, &reply,
+                IBinder::FLAG_ONEWAY);
+    }
 };
 
 IMPLEMENT_META_INTERFACE(CameraClient, "android.hardware.ICameraClient");
@@ -154,6 +178,41 @@
             recordingFrameHandleCallbackTimestamp(timestamp, handle);
             return NO_ERROR;
         } break;
+        case RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP_BATCH: {
+            ALOGV("RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP_BATCH");
+            CHECK_INTERFACE(ICameraClient, data, reply);
+            uint32_t n = 0;
+            status_t res = data.readUint32(&n);
+            if (res != OK) {
+                ALOGE("%s: Failed to read batch size: %s (%d)", __FUNCTION__, strerror(-res), res);
+                return BAD_VALUE;
+            }
+            std::vector<nsecs_t> timestamps;
+            std::vector<native_handle_t*> handles;
+            timestamps.reserve(n);
+            handles.reserve(n);
+            for (uint32_t i = 0; i < n; i++) {
+                res = data.readInt64(&timestamps[i]);
+                if (res != OK) {
+                    ALOGE("%s: Failed to read timestamp[%d]: %s (%d)",
+                            __FUNCTION__, i, strerror(-res), res);
+                    return BAD_VALUE;
+                }
+            }
+            for (uint32_t i = 0; i < n; i++) {
+                native_handle_t* handle = data.readNativeHandle();
+                if (handle == nullptr) {
+                    ALOGE("%s: Received a null native handle at handles[%d]",
+                            __FUNCTION__, i);
+                    return BAD_VALUE;
+                }
+                handles.push_back(handle);
+            }
+
+            // The native handle will be freed in BpCamera::releaseRecordingFrameHandleBatch.
+            recordingFrameHandleCallbackTimestampBatch(timestamps, handles);
+            return NO_ERROR;
+        } break;
         default:
             return BBinder::onTransact(code, data, reply, flags);
     }
diff --git a/camera/ICameraRecordingProxy.cpp b/camera/ICameraRecordingProxy.cpp
index 63c4b1d..bd6af75 100644
--- a/camera/ICameraRecordingProxy.cpp
+++ b/camera/ICameraRecordingProxy.cpp
@@ -32,13 +32,14 @@
     STOP_RECORDING,
     RELEASE_RECORDING_FRAME,
     RELEASE_RECORDING_FRAME_HANDLE,
+    RELEASE_RECORDING_FRAME_HANDLE_BATCH,
 };
 
 
 class BpCameraRecordingProxy: public BpInterface<ICameraRecordingProxy>
 {
 public:
-    BpCameraRecordingProxy(const sp<IBinder>& impl)
+    explicit BpCameraRecordingProxy(const sp<IBinder>& impl)
         : BpInterface<ICameraRecordingProxy>(impl)
     {
     }
@@ -82,6 +83,24 @@
         native_handle_close(handle);
         native_handle_delete(handle);
     }
+
+    void releaseRecordingFrameHandleBatch(const std::vector<native_handle_t*>& handles) {
+        ALOGV("releaseRecordingFrameHandleBatch");
+        Parcel data, reply;
+        data.writeInterfaceToken(ICameraRecordingProxy::getInterfaceDescriptor());
+        uint32_t n = handles.size();
+        data.writeUint32(n);
+        for (auto& handle : handles) {
+            data.writeNativeHandle(handle);
+        }
+        remote()->transact(RELEASE_RECORDING_FRAME_HANDLE_BATCH, data, &reply);
+
+        // Close the native handle because camera received a dup copy.
+        for (auto& handle : handles) {
+            native_handle_close(handle);
+            native_handle_delete(handle);
+        }
+    }
 };
 
 IMPLEMENT_META_INTERFACE(CameraRecordingProxy, "android.hardware.ICameraRecordingProxy");
@@ -121,6 +140,31 @@
             releaseRecordingFrameHandle(data.readNativeHandle());
             return NO_ERROR;
         } break;
+        case RELEASE_RECORDING_FRAME_HANDLE_BATCH: {
+            ALOGV("RELEASE_RECORDING_FRAME_HANDLE_BATCH");
+            CHECK_INTERFACE(ICameraRecordingProxy, data, reply);
+            uint32_t n = 0;
+            status_t res = data.readUint32(&n);
+            if (res != OK) {
+                ALOGE("%s: Failed to read batch size: %s (%d)", __FUNCTION__, strerror(-res), res);
+                return BAD_VALUE;
+            }
+            std::vector<native_handle_t*> handles;
+            handles.reserve(n);
+            for (uint32_t i = 0; i < n; i++) {
+                native_handle_t* handle = data.readNativeHandle();
+                if (handle == nullptr) {
+                    ALOGE("%s: Received a null native handle at handles[%d]",
+                            __FUNCTION__, i);
+                    return BAD_VALUE;
+                }
+                handles.push_back(handle);
+            }
+
+            // releaseRecordingFrameHandleBatch will be responsble to close the native handle.
+            releaseRecordingFrameHandleBatch(handles);
+            return NO_ERROR;
+        } break;
         default:
             return BBinder::onTransact(code, data, reply, flags);
     }
diff --git a/camera/ICameraRecordingProxyListener.cpp b/camera/ICameraRecordingProxyListener.cpp
index fa4dfd8..c954241 100644
--- a/camera/ICameraRecordingProxyListener.cpp
+++ b/camera/ICameraRecordingProxyListener.cpp
@@ -28,12 +28,13 @@
 enum {
     DATA_CALLBACK_TIMESTAMP = IBinder::FIRST_CALL_TRANSACTION,
     RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP,
+    RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP_BATCH
 };
 
 class BpCameraRecordingProxyListener: public BpInterface<ICameraRecordingProxyListener>
 {
 public:
-    BpCameraRecordingProxyListener(const sp<IBinder>& impl)
+    explicit BpCameraRecordingProxyListener(const sp<IBinder>& impl)
         : BpInterface<ICameraRecordingProxyListener>(impl)
     {
     }
@@ -62,6 +63,36 @@
         native_handle_close(handle);
         native_handle_delete(handle);
     }
+
+    void recordingFrameHandleCallbackTimestampBatch(
+            const std::vector<nsecs_t>& timestamps,
+            const std::vector<native_handle_t*>& handles) {
+        ALOGV("recordingFrameHandleCallbackTimestampBatch");
+        Parcel data, reply;
+        data.writeInterfaceToken(ICameraRecordingProxyListener::getInterfaceDescriptor());
+
+        uint32_t n = timestamps.size();
+        if (n != handles.size()) {
+            ALOGE("%s: size of timestamps(%zu) and handles(%zu) mismatch!",
+                    __FUNCTION__, timestamps.size(), handles.size());
+            return;
+        }
+        data.writeUint32(n);
+        for (auto ts : timestamps) {
+            data.writeInt64(ts);
+        }
+        for (auto& handle : handles) {
+            data.writeNativeHandle(handle);
+        }
+        remote()->transact(RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP_BATCH, data, &reply,
+                IBinder::FLAG_ONEWAY);
+
+        // The native handle is dupped in ICameraClient so we need to free it here.
+        for (auto& handle : handles) {
+            native_handle_close(handle);
+            native_handle_delete(handle);
+        }
+    }
 };
 
 IMPLEMENT_META_INTERFACE(CameraRecordingProxyListener, "android.hardware.ICameraRecordingProxyListener");
@@ -101,6 +132,41 @@
             recordingFrameHandleCallbackTimestamp(timestamp, handle);
             return NO_ERROR;
         } break;
+        case RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP_BATCH: {
+            ALOGV("RECORDING_FRAME_HANDLE_CALLBACK_TIMESTAMP_BATCH");
+            CHECK_INTERFACE(ICameraRecordingProxyListener, data, reply);
+            uint32_t n = 0;
+            status_t res = data.readUint32(&n);
+            if (res != OK) {
+                ALOGE("%s: Failed to read batch size: %s (%d)", __FUNCTION__, strerror(-res), res);
+                return BAD_VALUE;
+            }
+            std::vector<nsecs_t> timestamps;
+            std::vector<native_handle_t*> handles;
+            timestamps.reserve(n);
+            handles.reserve(n);
+            for (uint32_t i = 0; i < n; i++) {
+                res = data.readInt64(&timestamps[i]);
+                if (res != OK) {
+                    ALOGE("%s: Failed to read timestamp[%d]: %s (%d)",
+                            __FUNCTION__, i, strerror(-res), res);
+                    return BAD_VALUE;
+                }
+            }
+            for (uint32_t i = 0; i < n; i++) {
+                native_handle_t* handle = data.readNativeHandle();
+                if (handle == nullptr) {
+                    ALOGE("%s: Received a null native handle at handles[%d]",
+                            __FUNCTION__, i);
+                    return BAD_VALUE;
+                }
+                handles.push_back(handle);
+            }
+            // The native handle will be freed in
+            // BpCameraRecordingProxy::releaseRecordingFrameHandleBatch.
+            recordingFrameHandleCallbackTimestampBatch(timestamps, handles);
+            return NO_ERROR;
+        } break;
         default:
             return BBinder::onTransact(code, data, reply, flags);
     }
diff --git a/camera/ICameraServiceProxy.cpp b/camera/ICameraServiceProxy.cpp
index 694e9c3..a9d0836 100644
--- a/camera/ICameraServiceProxy.cpp
+++ b/camera/ICameraServiceProxy.cpp
@@ -26,7 +26,8 @@
 
 class BpCameraServiceProxy: public BpInterface<ICameraServiceProxy> {
 public:
-    BpCameraServiceProxy(const sp<IBinder>& impl) : BpInterface<ICameraServiceProxy>(impl) {}
+    explicit BpCameraServiceProxy(const sp<IBinder>& impl)
+        : BpInterface<ICameraServiceProxy>(impl) {}
 
     virtual void pingForUserUpdate() {
         Parcel data;
diff --git a/camera/VendorTagDescriptor.cpp b/camera/VendorTagDescriptor.cpp
index 02ece14..4c28789 100644
--- a/camera/VendorTagDescriptor.cpp
+++ b/camera/VendorTagDescriptor.cpp
@@ -29,6 +29,7 @@
 
 #include <stdio.h>
 #include <string.h>
+#include <inttypes.h>
 
 namespace android {
 
@@ -40,11 +41,22 @@
 static const char* vendor_tag_descriptor_get_tag_name(const vendor_tag_ops_t* v, uint32_t tag);
 static int vendor_tag_descriptor_get_tag_type(const vendor_tag_ops_t* v, uint32_t tag);
 
+static int vendor_tag_descriptor_cache_get_tag_count(metadata_vendor_id_t id);
+static void vendor_tag_descriptor_cache_get_all_tags(uint32_t* tagArray,
+        metadata_vendor_id_t id);
+static const char* vendor_tag_descriptor_cache_get_section_name(uint32_t tag,
+        metadata_vendor_id_t id);
+static const char* vendor_tag_descriptor_cache_get_tag_name(uint32_t tag,
+        metadata_vendor_id_t id);
+static int vendor_tag_descriptor_cache_get_tag_type(uint32_t tag,
+        metadata_vendor_id_t id);
+
 } /* extern "C" */
 
 
 static Mutex sLock;
 static sp<VendorTagDescriptor> sGlobalVendorTagDescriptor;
+static sp<VendorTagDescriptorCache> sGlobalVendorTagDescriptorCache;
 
 namespace hardware {
 namespace camera2 {
@@ -96,7 +108,7 @@
     mVendorOps = src.mVendorOps;
 }
 
-status_t VendorTagDescriptor::readFromParcel(const Parcel* parcel) {
+status_t VendorTagDescriptor::readFromParcel(const android::Parcel* parcel) {
     status_t res = OK;
     if (parcel == NULL) {
         ALOGE("%s: parcel argument was NULL.", __FUNCTION__);
@@ -192,7 +204,7 @@
     // Set up reverse mapping
     for (size_t i = 0; i < static_cast<size_t>(tagCount); ++i) {
         uint32_t tag = allTags[i];
-        String8 sectionString = mSections[mTagToSectionMap.valueFor(tag)];
+        const String8& sectionString = mSections[mTagToSectionMap.valueFor(tag)];
 
         ssize_t reverseIndex = -1;
         if ((reverseIndex = mReverseMapping.indexOfKey(sectionString)) < 0) {
@@ -244,7 +256,7 @@
     return mTagToTypeMap.valueFor(tag);
 }
 
-status_t VendorTagDescriptor::writeToParcel(Parcel* parcel) const {
+status_t VendorTagDescriptor::writeToParcel(android::Parcel* parcel) const {
     status_t res = OK;
     if (parcel == NULL) {
         ALOGE("%s: parcel argument was NULL.", __FUNCTION__);
@@ -284,7 +296,7 @@
     return &mSections;
 }
 
-status_t VendorTagDescriptor::lookupTag(String8 name, String8 section, /*out*/uint32_t* tag) const {
+status_t VendorTagDescriptor::lookupTag(const String8& name, const String8& section, /*out*/uint32_t* tag) const {
     ssize_t index = mReverseMapping.indexOfKey(section);
     if (index < 0) {
         ALOGE("%s: Section '%s' does not exist.", __FUNCTION__, section.string());
@@ -333,11 +345,166 @@
 
 }
 
+status_t VendorTagDescriptorCache::writeToParcel(Parcel* parcel) const {
+    status_t res = OK;
+    if (parcel == NULL) {
+        ALOGE("%s: parcel argument was NULL.", __FUNCTION__);
+        return BAD_VALUE;
+    }
+
+    if ((res = parcel->writeInt32(mVendorMap.size())) != OK) {
+        return res;
+    }
+
+    for (const auto &iter : mVendorMap) {
+        if ((res = parcel->writeUint64(iter.first)) != OK) break;
+        if ((res = parcel->writeParcelable(*iter.second)) != OK) break;
+    }
+
+    return res;
+}
+
+
+status_t VendorTagDescriptorCache::readFromParcel(const Parcel* parcel) {
+    status_t res = OK;
+    if (parcel == NULL) {
+        ALOGE("%s: parcel argument was NULL.", __FUNCTION__);
+        return BAD_VALUE;
+    }
+
+    int32_t vendorCount = 0;
+    if ((res = parcel->readInt32(&vendorCount)) != OK) {
+        ALOGE("%s: could not read vendor count from parcel", __FUNCTION__);
+        return res;
+    }
+
+    if (vendorCount < 0 || vendorCount > INT32_MAX) {
+        ALOGE("%s: vendor count %d from is invalid.", __FUNCTION__, vendorCount);
+        return BAD_VALUE;
+    }
+
+    metadata_vendor_id_t id;
+    for (int32_t i = 0; i < vendorCount; i++) {
+        if ((res = parcel->readUint64(&id)) != OK) {
+            ALOGE("%s: could not read vendor id from parcel for index %d",
+                  __FUNCTION__, i);
+            break;
+        }
+        sp<android::VendorTagDescriptor> desc = new android::VendorTagDescriptor();
+        if ((res = parcel->readParcelable(desc.get())) != OK) {
+            ALOGE("%s: could not read vendor tag descriptor from parcel for index %d rc = %d",
+                  __FUNCTION__, i, res);
+            break;
+        }
+
+        if ((res = addVendorDescriptor(id, desc)) != OK) {
+            ALOGE("%s: failed to add vendor tag descriptor for index: %d ",
+                  __FUNCTION__, i);
+            break;
+        }
+    }
+
+    return res;
+}
+
+int VendorTagDescriptorCache::getTagCount(metadata_vendor_id_t id) const {
+    int ret = 0;
+    auto desc = mVendorMap.find(id);
+    if (desc != mVendorMap.end()) {
+        ret = desc->second->getTagCount();
+    } else {
+        ALOGE("%s: Vendor descriptor id is missing!", __func__);
+    }
+
+    return ret;
+}
+
+void VendorTagDescriptorCache::getTagArray(uint32_t* tagArray,
+        metadata_vendor_id_t id) const {
+    auto desc = mVendorMap.find(id);
+    if (desc != mVendorMap.end()) {
+        desc->second->getTagArray(tagArray);
+    } else {
+        ALOGE("%s: Vendor descriptor id is missing!", __func__);
+    }
+}
+
+const char* VendorTagDescriptorCache::getSectionName(uint32_t tag,
+        metadata_vendor_id_t id) const {
+    const char *ret = nullptr;
+    auto desc = mVendorMap.find(id);
+    if (desc != mVendorMap.end()) {
+        ret = desc->second->getSectionName(tag);
+    } else {
+        ALOGE("%s: Vendor descriptor id is missing!", __func__);
+    }
+
+    return ret;
+}
+
+const char* VendorTagDescriptorCache::getTagName(uint32_t tag,
+        metadata_vendor_id_t id) const {
+    const char *ret = nullptr;
+    auto desc = mVendorMap.find(id);
+    if (desc != mVendorMap.end()) {
+        ret = desc->second->getTagName(tag);
+    } else {
+        ALOGE("%s: Vendor descriptor id is missing!", __func__);
+    }
+
+    return ret;
+}
+
+int VendorTagDescriptorCache::getTagType(uint32_t tag,
+        metadata_vendor_id_t id) const {
+    int ret = 0;
+    auto desc = mVendorMap.find(id);
+    if (desc != mVendorMap.end()) {
+        ret = desc->second->getTagType(tag);
+    } else {
+        ALOGE("%s: Vendor descriptor id is missing!", __func__);
+    }
+
+    return ret;
+}
+
+void VendorTagDescriptorCache::dump(int fd, int verbosity,
+        int indentation) const {
+    for (const auto &desc : mVendorMap) {
+        dprintf(fd, "%*sDumping vendor tag descriptors for vendor with"
+                " id %" PRIu64 " \n", indentation, "", desc.first);
+        desc.second->dump(fd, verbosity, indentation);
+    }
+}
+
+int32_t VendorTagDescriptorCache::addVendorDescriptor(metadata_vendor_id_t id,
+        sp<android::VendorTagDescriptor> desc) {
+    auto entry = mVendorMap.find(id);
+    if (entry != mVendorMap.end()) {
+        ALOGE("%s: Vendor descriptor with same id already present!", __func__);
+        return BAD_VALUE;
+    }
+
+    mVendorMap.emplace(id, desc);
+    return NO_ERROR;
+}
+
+int32_t VendorTagDescriptorCache::getVendorTagDescriptor(
+        metadata_vendor_id_t id, sp<android::VendorTagDescriptor> *desc /*out*/) {
+    auto entry = mVendorMap.find(id);
+    if (entry == mVendorMap.end()) {
+        return NAME_NOT_FOUND;
+    }
+
+    *desc = entry->second;
+
+    return NO_ERROR;
+}
+
 } // namespace params
 } // namespace camera2
 } // namespace hardware
 
-
 status_t VendorTagDescriptor::createDescriptorFromOps(const vendor_tag_ops_t* vOps,
             /*out*/
             sp<VendorTagDescriptor>& descriptor) {
@@ -451,6 +618,39 @@
     return sGlobalVendorTagDescriptor;
 }
 
+status_t VendorTagDescriptorCache::setAsGlobalVendorTagCache(
+        const sp<VendorTagDescriptorCache>& cache) {
+    status_t res = OK;
+    Mutex::Autolock al(sLock);
+    sGlobalVendorTagDescriptorCache = cache;
+
+    struct vendor_tag_cache_ops* opsPtr = NULL;
+    if (cache != NULL) {
+        opsPtr = &(cache->mVendorCacheOps);
+        opsPtr->get_tag_count = vendor_tag_descriptor_cache_get_tag_count;
+        opsPtr->get_all_tags = vendor_tag_descriptor_cache_get_all_tags;
+        opsPtr->get_section_name = vendor_tag_descriptor_cache_get_section_name;
+        opsPtr->get_tag_name = vendor_tag_descriptor_cache_get_tag_name;
+        opsPtr->get_tag_type = vendor_tag_descriptor_cache_get_tag_type;
+    }
+    if((res = set_camera_metadata_vendor_cache_ops(opsPtr)) != OK) {
+        ALOGE("%s: Could not set vendor tag cache, received error %s (%d)."
+                , __FUNCTION__, strerror(-res), res);
+    }
+    return res;
+}
+
+void VendorTagDescriptorCache::clearGlobalVendorTagCache() {
+    Mutex::Autolock al(sLock);
+    set_camera_metadata_vendor_cache_ops(NULL);
+    sGlobalVendorTagDescriptorCache.clear();
+}
+
+sp<VendorTagDescriptorCache> VendorTagDescriptorCache::getGlobalVendorTagCache() {
+    Mutex::Autolock al(sLock);
+    return sGlobalVendorTagDescriptorCache;
+}
+
 extern "C" {
 
 int vendor_tag_descriptor_get_tag_count(const vendor_tag_ops_t* /*v*/) {
@@ -498,5 +698,53 @@
     return sGlobalVendorTagDescriptor->getTagType(tag);
 }
 
+int vendor_tag_descriptor_cache_get_tag_count(metadata_vendor_id_t id) {
+    Mutex::Autolock al(sLock);
+    if (sGlobalVendorTagDescriptorCache == NULL) {
+        ALOGE("%s: Vendor tag descriptor cache not initialized.", __FUNCTION__);
+        return VENDOR_TAG_COUNT_ERR;
+    }
+    return sGlobalVendorTagDescriptorCache->getTagCount(id);
+}
+
+void vendor_tag_descriptor_cache_get_all_tags(uint32_t* tagArray,
+        metadata_vendor_id_t id) {
+    Mutex::Autolock al(sLock);
+    if (sGlobalVendorTagDescriptorCache == NULL) {
+        ALOGE("%s: Vendor tag descriptor cache not initialized.", __FUNCTION__);
+    }
+    sGlobalVendorTagDescriptorCache->getTagArray(tagArray, id);
+}
+
+const char* vendor_tag_descriptor_cache_get_section_name(uint32_t tag,
+        metadata_vendor_id_t id) {
+    Mutex::Autolock al(sLock);
+    if (sGlobalVendorTagDescriptorCache == NULL) {
+        ALOGE("%s: Vendor tag descriptor cache not initialized.", __FUNCTION__);
+        return VENDOR_SECTION_NAME_ERR;
+    }
+    return sGlobalVendorTagDescriptorCache->getSectionName(tag, id);
+}
+
+const char* vendor_tag_descriptor_cache_get_tag_name(uint32_t tag,
+        metadata_vendor_id_t id) {
+    Mutex::Autolock al(sLock);
+    if (sGlobalVendorTagDescriptorCache == NULL) {
+        ALOGE("%s: Vendor tag descriptor cache not initialized.", __FUNCTION__);
+        return VENDOR_TAG_NAME_ERR;
+    }
+    return sGlobalVendorTagDescriptorCache->getTagName(tag, id);
+}
+
+int vendor_tag_descriptor_cache_get_tag_type(uint32_t tag,
+        metadata_vendor_id_t id) {
+    Mutex::Autolock al(sLock);
+    if (sGlobalVendorTagDescriptorCache == NULL) {
+        ALOGE("%s: Vendor tag descriptor cache not initialized.", __FUNCTION__);
+        return VENDOR_TAG_NAME_ERR;
+    }
+    return sGlobalVendorTagDescriptorCache->getTagType(tag, id);
+}
+
 } /* extern "C" */
 } /* namespace android */
diff --git a/camera/aidl/android/hardware/CameraStatus.aidl b/camera/aidl/android/hardware/CameraStatus.aidl
new file mode 100644
index 0000000..2089b8b
--- /dev/null
+++ b/camera/aidl/android/hardware/CameraStatus.aidl
@@ -0,0 +1,20 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware;
+
+/** @hide */
+parcelable CameraStatus cpp_header "camera/CameraBase.h";
diff --git a/camera/aidl/android/hardware/ICameraService.aidl b/camera/aidl/android/hardware/ICameraService.aidl
index e94fd0c..9c0f28b 100644
--- a/camera/aidl/android/hardware/ICameraService.aidl
+++ b/camera/aidl/android/hardware/ICameraService.aidl
@@ -21,9 +21,11 @@
 import android.hardware.camera2.ICameraDeviceUser;
 import android.hardware.camera2.ICameraDeviceCallbacks;
 import android.hardware.camera2.params.VendorTagDescriptor;
+import android.hardware.camera2.params.VendorTagDescriptorCache;
 import android.hardware.camera2.impl.CameraMetadataNative;
 import android.hardware.ICameraServiceListener;
 import android.hardware.CameraInfo;
+import android.hardware.CameraStatus;
 
 /**
  * Binder interface for the native camera service running in mediaserver.
@@ -83,7 +85,7 @@
      * Only supported for device HAL versions >= 3.2
      */
     ICameraDeviceUser connectDevice(ICameraDeviceCallbacks callbacks,
-            int cameraId,
+            String cameraId,
             String opPackageName,
             int clientUid);
 
@@ -102,16 +104,24 @@
             int clientUid);
 
     /**
-     * Add/remove listeners for changes to camera device and flashlight state
+     * Add listener for changes to camera device and flashlight state.
+     *
+     * Also returns the set of currently-known camera IDs and state of each device.
+     * Adding a listener will trigger the torch status listener to fire for all
+     * devices that have a flash unit
      */
-    void addListener(ICameraServiceListener listener);
+    CameraStatus[] addListener(ICameraServiceListener listener);
+
+    /**
+     * Remove listener for changes to camera device and flashlight state.
+     */
     void removeListener(ICameraServiceListener listener);
 
     /**
      * Read the static camera metadata for a camera device.
      * Only supported for device HAL versions >= 3.2
      */
-    CameraMetadataNative getCameraCharacteristics(int cameraId);
+    CameraMetadataNative getCameraCharacteristics(String cameraId);
 
     /**
      * Read in the vendor tag descriptors from the camera module HAL.
@@ -121,6 +131,14 @@
     VendorTagDescriptor getCameraVendorTagDescriptor();
 
     /**
+     * Retrieve the vendor tag descriptor cache which can have multiple vendor
+     * providers.
+     * Intended to be used by the native code of CameraMetadataNative to correctly
+     * interpret camera metadata with vendor tags.
+     */
+    VendorTagDescriptorCache getCameraVendorTagCache();
+
+    /**
      * Read the legacy camera1 parameters into a String
      */
     String getLegacyParameters(int cameraId);
@@ -132,9 +150,9 @@
     const int API_VERSION_2 = 2;
 
     // Determines if a particular API version is supported directly
-    boolean supportsCameraApi(int cameraId, int apiVersion);
+    boolean supportsCameraApi(String cameraId, int apiVersion);
 
-    void setTorchMode(String CameraId, boolean enabled, IBinder clientBinder);
+    void setTorchMode(String cameraId, boolean enabled, IBinder clientBinder);
 
     /**
      * Notify the camera service of a system event.  Should only be called from system_server.
diff --git a/camera/aidl/android/hardware/ICameraServiceListener.aidl b/camera/aidl/android/hardware/ICameraServiceListener.aidl
index 4e2a8c7..f871ce4 100644
--- a/camera/aidl/android/hardware/ICameraServiceListener.aidl
+++ b/camera/aidl/android/hardware/ICameraServiceListener.aidl
@@ -40,7 +40,7 @@
      */
     // Device physically unplugged
     const int STATUS_NOT_PRESENT      = 0;
-    // Device physically has been plugged in and the camera can be used exlusively
+    // Device physically has been plugged in and the camera can be used exclusively
     const int STATUS_PRESENT          = 1;
     // Device physically has been plugged in but it will not be connect-able until enumeration is
     // complete
@@ -51,7 +51,7 @@
     // Use to initialize variables only
     const int STATUS_UNKNOWN          = -1;
 
-    oneway void onStatusChanged(int status, int cameraId);
+    oneway void onStatusChanged(int status, String cameraId);
 
     /**
      * The torch mode status of a camera.
diff --git a/camera/aidl/android/hardware/camera2/ICameraDeviceCallbacks.aidl b/camera/aidl/android/hardware/camera2/ICameraDeviceCallbacks.aidl
index 755ec8e..8308095 100644
--- a/camera/aidl/android/hardware/camera2/ICameraDeviceCallbacks.aidl
+++ b/camera/aidl/android/hardware/camera2/ICameraDeviceCallbacks.aidl
@@ -44,4 +44,5 @@
      * @param lastFrameNumber Frame number of the last frame of the streaming request.
      */
     oneway void onRepeatingRequestError(in long lastFrameNumber);
+    oneway void onRequestQueueEmpty();
 }
diff --git a/camera/aidl/android/hardware/camera2/ICameraDeviceUser.aidl b/camera/aidl/android/hardware/camera2/ICameraDeviceUser.aidl
index 96ecfa0..0771fc8 100644
--- a/camera/aidl/android/hardware/camera2/ICameraDeviceUser.aidl
+++ b/camera/aidl/android/hardware/camera2/ICameraDeviceUser.aidl
@@ -54,6 +54,22 @@
     void beginConfigure();
 
     /**
+     * The standard operating mode for a camera device; all API guarantees are in force
+     */
+    const int NORMAL_MODE = 0;
+
+    /**
+     * High-speed recording mode; only two outputs targeting preview and video recording may be
+     * used, and requests must be batched.
+     */
+    const int CONSTRAINED_HIGH_SPEED_MODE = 1;
+
+    /**
+     * Start of custom vendor modes
+     */
+    const int VENDOR_MODE_START = 0x8000;
+
+    /**
      * End the device configuration.
      *
      * <p>
@@ -61,8 +77,10 @@
      * a call to beginConfigure and subsequent createStream/deleteStream calls).  This
      * must be called before any requests can be submitted.
      * <p>
+     * @param operatingMode The kind of session to create; either NORMAL_MODE or
+     *     CONSTRAINED_HIGH_SPEED_MODE. Must be a non-negative value.
      */
-    void endConfigure(boolean isConstrainedHighSpeed);
+    void endConfigure(int operatingMode);
 
     void deleteStream(int streamId);
 
@@ -122,5 +140,5 @@
 
     void prepare2(int maxCount, int streamId);
 
-    void setDeferredConfiguration(int streamId, in OutputConfiguration outputConfiguration);
+    void finalizeOutputConfigurations(int streamId, in OutputConfiguration outputConfiguration);
 }
diff --git a/camera/aidl/android/hardware/camera2/params/VendorTagDescriptorCache.aidl b/camera/aidl/android/hardware/camera2/params/VendorTagDescriptorCache.aidl
new file mode 100644
index 0000000..d212207
--- /dev/null
+++ b/camera/aidl/android/hardware/camera2/params/VendorTagDescriptorCache.aidl
@@ -0,0 +1,20 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.camera2.params;
+
+/** @hide */
+parcelable VendorTagDescriptorCache cpp_header "camera/VendorTagDescriptor.h";
diff --git a/camera/camera2/CaptureRequest.cpp b/camera/camera2/CaptureRequest.cpp
index 0d689a6..0597950 100644
--- a/camera/camera2/CaptureRequest.cpp
+++ b/camera/camera2/CaptureRequest.cpp
@@ -23,12 +23,20 @@
 
 #include <binder/Parcel.h>
 #include <gui/Surface.h>
+#include <gui/view/Surface.h>
 
 namespace android {
 namespace hardware {
 namespace camera2 {
 
-status_t CaptureRequest::readFromParcel(const Parcel* parcel) {
+// These must be in the .cpp (to avoid inlining)
+CaptureRequest::CaptureRequest() = default;
+CaptureRequest::~CaptureRequest() = default;
+CaptureRequest::CaptureRequest(const CaptureRequest& rhs) = default;
+CaptureRequest::CaptureRequest(CaptureRequest&& rhs) noexcept = default;
+
+
+status_t CaptureRequest::readFromParcel(const android::Parcel* parcel) {
     if (parcel == NULL) {
         ALOGE("%s: Null parcel", __FUNCTION__);
         return BAD_VALUE;
@@ -90,7 +98,7 @@
     return OK;
 }
 
-status_t CaptureRequest::writeToParcel(Parcel* parcel) const {
+status_t CaptureRequest::writeToParcel(android::Parcel* parcel) const {
     if (parcel == NULL) {
         ALOGE("%s: Null parcel", __FUNCTION__);
         return BAD_VALUE;
diff --git a/camera/camera2/OutputConfiguration.cpp b/camera/camera2/OutputConfiguration.cpp
index 38e1c01..468a1eb 100644
--- a/camera/camera2/OutputConfiguration.cpp
+++ b/camera/camera2/OutputConfiguration.cpp
@@ -21,8 +21,9 @@
 #include <utils/Log.h>
 
 #include <camera/camera2/OutputConfiguration.h>
-#include <gui/Surface.h>
 #include <binder/Parcel.h>
+#include <gui/view/Surface.h>
+#include <utils/String8.h>
 
 namespace android {
 
@@ -30,8 +31,9 @@
 const int OutputConfiguration::INVALID_ROTATION = -1;
 const int OutputConfiguration::INVALID_SET_ID = -1;
 
-sp<IGraphicBufferProducer> OutputConfiguration::getGraphicBufferProducer() const {
-    return mGbp;
+const std::vector<sp<IGraphicBufferProducer>>&
+        OutputConfiguration::getGraphicBufferProducers() const {
+    return mGbps;
 }
 
 int OutputConfiguration::getRotation() const {
@@ -54,21 +56,31 @@
     return mHeight;
 }
 
+bool OutputConfiguration::isDeferred() const {
+    return mIsDeferred;
+}
+
+bool OutputConfiguration::isShared() const {
+    return mIsShared;
+}
+
 OutputConfiguration::OutputConfiguration() :
         mRotation(INVALID_ROTATION),
         mSurfaceSetID(INVALID_SET_ID),
         mSurfaceType(SURFACE_TYPE_UNKNOWN),
         mWidth(0),
-        mHeight(0) {
+        mHeight(0),
+        mIsDeferred(false),
+        mIsShared(false) {
 }
 
-OutputConfiguration::OutputConfiguration(const Parcel& parcel) :
+OutputConfiguration::OutputConfiguration(const android::Parcel& parcel) :
         mRotation(INVALID_ROTATION),
         mSurfaceSetID(INVALID_SET_ID) {
     readFromParcel(&parcel);
 }
 
-status_t OutputConfiguration::readFromParcel(const Parcel* parcel) {
+status_t OutputConfiguration::readFromParcel(const android::Parcel* parcel) {
     status_t err = OK;
     int rotation = 0;
 
@@ -103,42 +115,60 @@
         return err;
     }
 
-    view::Surface surfaceShim;
-    if ((err = surfaceShim.readFromParcel(parcel)) != OK) {
-        // Read surface failure for deferred surface configuration is expected.
-        if (surfaceType == SURFACE_TYPE_SURFACE_VIEW ||
-                surfaceType == SURFACE_TYPE_SURFACE_TEXTURE) {
-            ALOGV("%s: Get null surface from a deferred surface configuration (%dx%d)",
-                    __FUNCTION__, width, height);
-            err = OK;
-        } else {
-            ALOGE("%s: Failed to read surface from parcel", __FUNCTION__);
-            return err;
-        }
+    int isDeferred = 0;
+    if ((err = parcel->readInt32(&isDeferred)) != OK) {
+        ALOGE("%s: Failed to read surface isDeferred flag from parcel", __FUNCTION__);
+        return err;
     }
 
-    mGbp = surfaceShim.graphicBufferProducer;
+    int isShared = 0;
+    if ((err = parcel->readInt32(&isShared)) != OK) {
+        ALOGE("%s: Failed to read surface isShared flag from parcel", __FUNCTION__);
+        return err;
+    }
+
+    if (isDeferred && surfaceType != SURFACE_TYPE_SURFACE_VIEW &&
+            surfaceType != SURFACE_TYPE_SURFACE_TEXTURE) {
+        ALOGE("%s: Invalid surface type for deferred configuration", __FUNCTION__);
+        return BAD_VALUE;
+    }
+
+    std::vector<view::Surface> surfaceShims;
+    if ((err = parcel->readParcelableVector(&surfaceShims)) != OK) {
+        ALOGE("%s: Failed to read surface(s) from parcel", __FUNCTION__);
+        return err;
+    }
+
     mRotation = rotation;
     mSurfaceSetID = setID;
     mSurfaceType = surfaceType;
     mWidth = width;
     mHeight = height;
+    mIsDeferred = isDeferred != 0;
+    mIsShared = isShared != 0;
+    for (auto& surface : surfaceShims) {
+        ALOGV("%s: OutputConfiguration: %p, name %s", __FUNCTION__,
+                surface.graphicBufferProducer.get(),
+                String8(surface.name).string());
+        mGbps.push_back(surface.graphicBufferProducer);
+    }
 
-    ALOGV("%s: OutputConfiguration: bp = %p, name = %s, rotation = %d, setId = %d,"
-            "surfaceType = %d", __FUNCTION__, mGbp.get(), String8(surfaceShim.name).string(),
-            mRotation, mSurfaceSetID, mSurfaceType);
+    ALOGV("%s: OutputConfiguration: rotation = %d, setId = %d, surfaceType = %d",
+            __FUNCTION__, mRotation, mSurfaceSetID, mSurfaceType);
 
     return err;
 }
 
 OutputConfiguration::OutputConfiguration(sp<IGraphicBufferProducer>& gbp, int rotation,
         int surfaceSetID) {
-    mGbp = gbp;
+    mGbps.push_back(gbp);
     mRotation = rotation;
     mSurfaceSetID = surfaceSetID;
+    mIsDeferred = false;
+    mIsShared = false;
 }
 
-status_t OutputConfiguration::writeToParcel(Parcel* parcel) const {
+status_t OutputConfiguration::writeToParcel(android::Parcel* parcel) const {
 
     if (parcel == nullptr) return BAD_VALUE;
     status_t err = OK;
@@ -158,14 +188,56 @@
     err = parcel->writeInt32(mHeight);
     if (err != OK) return err;
 
-    view::Surface surfaceShim;
-    surfaceShim.name = String16("unknown_name"); // name of surface
-    surfaceShim.graphicBufferProducer = mGbp;
+    err = parcel->writeInt32(mIsDeferred ? 1 : 0);
+    if (err != OK) return err;
 
-    err = surfaceShim.writeToParcel(parcel);
+    err = parcel->writeInt32(mIsShared ? 1 : 0);
+    if (err != OK) return err;
+
+    std::vector<view::Surface> surfaceShims;
+    for (auto& gbp : mGbps) {
+        view::Surface surfaceShim;
+        surfaceShim.name = String16("unknown_name"); // name of surface
+        surfaceShim.graphicBufferProducer = gbp;
+        surfaceShims.push_back(surfaceShim);
+    }
+    err = parcel->writeParcelableVector(surfaceShims);
     if (err != OK) return err;
 
     return OK;
 }
 
+bool OutputConfiguration::gbpsEqual(const OutputConfiguration& other) const {
+    const std::vector<sp<IGraphicBufferProducer> >& otherGbps =
+            other.getGraphicBufferProducers();
+
+    if (mGbps.size() != otherGbps.size()) {
+        return false;
+    }
+
+    for (size_t i = 0; i < mGbps.size(); i++) {
+        if (mGbps[i] != otherGbps[i]) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+bool OutputConfiguration::gbpsLessThan(const OutputConfiguration& other) const {
+    const std::vector<sp<IGraphicBufferProducer> >& otherGbps =
+            other.getGraphicBufferProducers();
+
+    if (mGbps.size() !=  otherGbps.size()) {
+        return mGbps.size() < otherGbps.size();
+    }
+
+    for (size_t i = 0; i < mGbps.size(); i++) {
+        if (mGbps[i] != otherGbps[i]) {
+            return mGbps[i] < otherGbps[i];
+        }
+    }
+
+    return false;
+}
 }; // namespace android
diff --git a/camera/camera2/SubmitInfo.cpp b/camera/camera2/SubmitInfo.cpp
index d739c79..6ebd810 100644
--- a/camera/camera2/SubmitInfo.cpp
+++ b/camera/camera2/SubmitInfo.cpp
@@ -22,7 +22,7 @@
 namespace camera2 {
 namespace utils {
 
-status_t SubmitInfo::writeToParcel(Parcel *parcel) const {
+status_t SubmitInfo::writeToParcel(android::Parcel *parcel) const {
     status_t res;
     if (parcel == nullptr) return BAD_VALUE;
 
@@ -33,7 +33,7 @@
     return res;
 }
 
-status_t SubmitInfo::readFromParcel(const Parcel *parcel) {
+status_t SubmitInfo::readFromParcel(const android::Parcel *parcel) {
     status_t res;
     if (parcel == nullptr) return BAD_VALUE;
 
diff --git a/camera/cameraserver/Android.mk b/camera/cameraserver/Android.mk
index 7e36c5e..d32e252 100644
--- a/camera/cameraserver/Android.mk
+++ b/camera/cameraserver/Android.mk
@@ -21,10 +21,17 @@
 
 LOCAL_SHARED_LIBRARIES := \
 	libcameraservice \
-	libcutils \
+	liblog \
 	libutils \
+	libui \
+	libgui \
 	libbinder \
-	libcamera_client
+	libhidltransport \
+	android.hardware.camera.common@1.0 \
+	android.hardware.camera.provider@2.4 \
+	android.hardware.camera.device@1.0 \
+	android.hardware.camera.device@3.2 \
+	android.hidl.manager@1.0
 
 LOCAL_MODULE:= cameraserver
 LOCAL_32_BIT_ONLY := true
diff --git a/camera/cameraserver/main_cameraserver.cpp b/camera/cameraserver/main_cameraserver.cpp
index f4be468..3972436 100644
--- a/camera/cameraserver/main_cameraserver.cpp
+++ b/camera/cameraserver/main_cameraserver.cpp
@@ -17,8 +17,8 @@
 #define LOG_TAG "cameraserver"
 //#define LOG_NDEBUG 0
 
-// from LOCAL_C_INCLUDES
 #include "CameraService.h"
+#include <hidl/HidlTransportSupport.h>
 
 using namespace android;
 
@@ -26,6 +26,9 @@
 {
     signal(SIGPIPE, SIG_IGN);
 
+    // Set 3 threads for HIDL calls
+    hardware::configureRpcThreadpool(3, /*willjoin*/ false);
+
     sp<ProcessState> proc(ProcessState::self());
     sp<IServiceManager> sm = defaultServiceManager();
     ALOGI("ServiceManager: %p", sm.get());
diff --git a/camera/include/camera/Camera.h b/camera/include/camera/Camera.h
new file mode 100644
index 0000000..430aa1c
--- /dev/null
+++ b/camera/include/camera/Camera.h
@@ -0,0 +1,210 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_CAMERA_H
+#define ANDROID_HARDWARE_CAMERA_H
+
+#include <utils/Timers.h>
+
+#include <android/hardware/ICameraService.h>
+
+#include <gui/IGraphicBufferProducer.h>
+#include <system/camera.h>
+#include <camera/ICameraRecordingProxy.h>
+#include <camera/ICameraRecordingProxyListener.h>
+#include <camera/android/hardware/ICamera.h>
+#include <camera/android/hardware/ICameraClient.h>
+#include <camera/CameraBase.h>
+
+namespace android {
+
+class Surface;
+class String8;
+class String16;
+
+// ref-counted object for callbacks
+class CameraListener: virtual public RefBase
+{
+public:
+    virtual void notify(int32_t msgType, int32_t ext1, int32_t ext2) = 0;
+    virtual void postData(int32_t msgType, const sp<IMemory>& dataPtr,
+                          camera_frame_metadata_t *metadata) = 0;
+    virtual void postDataTimestamp(nsecs_t timestamp, int32_t msgType, const sp<IMemory>& dataPtr) = 0;
+    virtual void postRecordingFrameHandleTimestamp(nsecs_t timestamp, native_handle_t* handle) = 0;
+    virtual void postRecordingFrameHandleTimestampBatch(
+            const std::vector<nsecs_t>& timestamps,
+            const std::vector<native_handle_t*>& handles) = 0;
+};
+
+class Camera;
+
+template <>
+struct CameraTraits<Camera>
+{
+    typedef CameraListener                     TCamListener;
+    typedef ::android::hardware::ICamera       TCamUser;
+    typedef ::android::hardware::ICameraClient TCamCallbacks;
+    typedef ::android::binder::Status(::android::hardware::ICameraService::*TCamConnectService)
+        (const sp<::android::hardware::ICameraClient>&,
+        int, const String16&, int, int,
+        /*out*/
+        sp<::android::hardware::ICamera>*);
+    static TCamConnectService     fnConnectService;
+};
+
+
+class Camera :
+    public CameraBase<Camera>,
+    public ::android::hardware::BnCameraClient
+{
+public:
+    enum {
+        USE_CALLING_UID = ::android::hardware::ICameraService::USE_CALLING_UID
+    };
+    enum {
+        USE_CALLING_PID = ::android::hardware::ICameraService::USE_CALLING_PID
+    };
+
+            // construct a camera client from an existing remote
+    static  sp<Camera>  create(const sp<::android::hardware::ICamera>& camera);
+    static  sp<Camera>  connect(int cameraId,
+                                const String16& clientPackageName,
+                                int clientUid, int clientPid);
+
+    static  status_t  connectLegacy(int cameraId, int halVersion,
+                                     const String16& clientPackageName,
+                                     int clientUid, sp<Camera>& camera);
+
+            virtual     ~Camera();
+
+            status_t    reconnect();
+            status_t    lock();
+            status_t    unlock();
+
+            // pass the buffered IGraphicBufferProducer to the camera service
+            status_t    setPreviewTarget(const sp<IGraphicBufferProducer>& bufferProducer);
+
+            // start preview mode, must call setPreviewTarget first
+            status_t    startPreview();
+
+            // stop preview mode
+            void        stopPreview();
+
+            // get preview state
+            bool        previewEnabled();
+
+            // start recording mode, must call setPreviewTarget first
+            status_t    startRecording();
+
+            // stop recording mode
+            void        stopRecording();
+
+            // get recording state
+            bool        recordingEnabled();
+
+            // release a recording frame
+            void        releaseRecordingFrame(const sp<IMemory>& mem);
+
+            // release a recording frame handle
+            void        releaseRecordingFrameHandle(native_handle_t *handle);
+
+            // release a batch of recording frame handles
+            void        releaseRecordingFrameHandleBatch(
+                    const std::vector<native_handle_t*> handles);
+
+            // autoFocus - status returned from callback
+            status_t    autoFocus();
+
+            // cancel auto focus
+            status_t    cancelAutoFocus();
+
+            // take a picture - picture returned from callback
+            status_t    takePicture(int msgType);
+
+            // set preview/capture parameters - key/value pairs
+            status_t    setParameters(const String8& params);
+
+            // get preview/capture parameters - key/value pairs
+            String8     getParameters() const;
+
+            // send command to camera driver
+            status_t    sendCommand(int32_t cmd, int32_t arg1, int32_t arg2);
+
+            // Tell camera how to pass video buffers. videoBufferMode is one of VIDEO_BUFFER_MODE_*.
+            // Returns OK if the specified video buffer mode is supported. If videoBufferMode is
+            // VIDEO_BUFFER_MODE_BUFFER_QUEUE, setVideoTarget() must be called before starting
+            // video recording.
+            status_t    setVideoBufferMode(int32_t videoBufferMode);
+
+            // Set the video buffer producer for camera to use in VIDEO_BUFFER_MODE_BUFFER_QUEUE
+            // mode.
+            status_t    setVideoTarget(const sp<IGraphicBufferProducer>& bufferProducer);
+
+            void        setListener(const sp<CameraListener>& listener);
+            void        setRecordingProxyListener(const sp<ICameraRecordingProxyListener>& listener);
+
+            // Configure preview callbacks to app. Only one of the older
+            // callbacks or the callback surface can be active at the same time;
+            // enabling one will disable the other if active. Flags can be
+            // disabled by calling it with CAMERA_FRAME_CALLBACK_FLAG_NOOP, and
+            // Target by calling it with a NULL interface.
+            void        setPreviewCallbackFlags(int preview_callback_flag);
+            status_t    setPreviewCallbackTarget(
+                    const sp<IGraphicBufferProducer>& callbackProducer);
+
+            sp<ICameraRecordingProxy> getRecordingProxy();
+
+    // ICameraClient interface
+    virtual void        notifyCallback(int32_t msgType, int32_t ext, int32_t ext2);
+    virtual void        dataCallback(int32_t msgType, const sp<IMemory>& dataPtr,
+                                     camera_frame_metadata_t *metadata);
+    virtual void        dataCallbackTimestamp(nsecs_t timestamp, int32_t msgType, const sp<IMemory>& dataPtr);
+    virtual void        recordingFrameHandleCallbackTimestamp(nsecs_t timestamp, native_handle_t* handle);
+    virtual void        recordingFrameHandleCallbackTimestampBatch(
+                                const std::vector<nsecs_t>& timestamps,
+                                const std::vector<native_handle_t*>& handles);
+
+
+    class RecordingProxy : public BnCameraRecordingProxy
+    {
+    public:
+        explicit RecordingProxy(const sp<Camera>& camera);
+
+        // ICameraRecordingProxy interface
+        virtual status_t startRecording(const sp<ICameraRecordingProxyListener>& listener);
+        virtual void stopRecording();
+        virtual void releaseRecordingFrame(const sp<IMemory>& mem);
+        virtual void releaseRecordingFrameHandle(native_handle_t* handle);
+        virtual void releaseRecordingFrameHandleBatch(
+                const std::vector<native_handle_t*>& handles);
+
+    private:
+        sp<Camera>         mCamera;
+    };
+
+protected:
+    explicit            Camera(int cameraId);
+                        Camera(const Camera&);
+                        Camera& operator=(const Camera);
+
+    sp<ICameraRecordingProxyListener>  mRecordingProxyListener;
+
+    friend class        CameraBase;
+};
+
+}; // namespace android
+
+#endif
diff --git a/camera/include/camera/CameraBase.h b/camera/include/camera/CameraBase.h
new file mode 100644
index 0000000..74a2dce
--- /dev/null
+++ b/camera/include/camera/CameraBase.h
@@ -0,0 +1,158 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_CAMERA_BASE_H
+#define ANDROID_HARDWARE_CAMERA_BASE_H
+
+#include <android/hardware/ICameraServiceListener.h>
+
+#include <utils/Mutex.h>
+#include <binder/BinderService.h>
+
+struct camera_frame_metadata;
+
+namespace android {
+
+namespace hardware {
+
+
+class ICameraService;
+class ICameraServiceListener;
+
+enum {
+    /** The facing of the camera is opposite to that of the screen. */
+    CAMERA_FACING_BACK = 0,
+    /** The facing of the camera is the same as that of the screen. */
+    CAMERA_FACING_FRONT = 1,
+};
+
+struct CameraInfo : public android::Parcelable {
+    /**
+     * The direction that the camera faces to. It should be CAMERA_FACING_BACK
+     * or CAMERA_FACING_FRONT.
+     */
+    int facing;
+
+    /**
+     * The orientation of the camera image. The value is the angle that the
+     * camera image needs to be rotated clockwise so it shows correctly on the
+     * display in its natural orientation. It should be 0, 90, 180, or 270.
+     *
+     * For example, suppose a device has a naturally tall screen. The
+     * back-facing camera sensor is mounted in landscape. You are looking at
+     * the screen. If the top side of the camera sensor is aligned with the
+     * right edge of the screen in natural orientation, the value should be
+     * 90. If the top side of a front-facing camera sensor is aligned with the
+     * right of the screen, the value should be 270.
+     */
+    int orientation;
+
+    virtual status_t writeToParcel(android::Parcel* parcel) const;
+    virtual status_t readFromParcel(const android::Parcel* parcel);
+
+};
+
+/**
+ * Basic status information about a camera device - its name and its current
+ * state.
+ */
+struct CameraStatus : public android::Parcelable {
+    /**
+     * The name of the camera device
+     */
+    String8 cameraId;
+
+    /**
+     * Its current status, one of the ICameraService::STATUS_* fields
+     */
+    int32_t status;
+
+    virtual status_t writeToParcel(android::Parcel* parcel) const;
+    virtual status_t readFromParcel(const android::Parcel* parcel);
+
+    CameraStatus(String8 id, int32_t s) : cameraId(id), status(s) {}
+    CameraStatus() : status(ICameraServiceListener::STATUS_PRESENT) {}
+};
+
+} // namespace hardware
+
+using hardware::CameraInfo;
+
+
+template <typename TCam>
+struct CameraTraits {
+};
+
+template <typename TCam, typename TCamTraits = CameraTraits<TCam> >
+class CameraBase : public IBinder::DeathRecipient
+{
+public:
+    typedef typename TCamTraits::TCamListener       TCamListener;
+    typedef typename TCamTraits::TCamUser           TCamUser;
+    typedef typename TCamTraits::TCamCallbacks      TCamCallbacks;
+    typedef typename TCamTraits::TCamConnectService TCamConnectService;
+
+    static sp<TCam>      connect(int cameraId,
+                                 const String16& clientPackageName,
+                                 int clientUid, int clientPid);
+    virtual void         disconnect();
+
+    void                 setListener(const sp<TCamListener>& listener);
+
+    static int           getNumberOfCameras();
+
+    static status_t      getCameraInfo(int cameraId,
+                                       /*out*/
+                                       struct hardware::CameraInfo* cameraInfo);
+
+    sp<TCamUser>         remote();
+
+    // Status is set to 'UNKNOWN_ERROR' after successful (re)connection
+    status_t             getStatus();
+
+protected:
+    CameraBase(int cameraId);
+    virtual              ~CameraBase();
+
+    ////////////////////////////////////////////////////////
+    // TCamCallbacks implementation
+    ////////////////////////////////////////////////////////
+    virtual void         notifyCallback(int32_t msgType, int32_t ext,
+                                        int32_t ext2);
+
+    ////////////////////////////////////////////////////////
+    // Common instance variables
+    ////////////////////////////////////////////////////////
+    Mutex                            mLock;
+
+    virtual void                     binderDied(const wp<IBinder>& who);
+
+    // helper function to obtain camera service handle
+    static const sp<::android::hardware::ICameraService> getCameraService();
+
+    sp<TCamUser>                     mCamera;
+    status_t                         mStatus;
+
+    sp<TCamListener>                 mListener;
+
+    const int                        mCameraId;
+
+    typedef CameraBase<TCam>         CameraBaseT;
+};
+
+}; // namespace android
+
+#endif
diff --git a/include/camera/CameraMetadata.h b/camera/include/camera/CameraMetadata.h
similarity index 100%
rename from include/camera/CameraMetadata.h
rename to camera/include/camera/CameraMetadata.h
diff --git a/include/camera/CameraParameters.h b/camera/include/camera/CameraParameters.h
similarity index 100%
rename from include/camera/CameraParameters.h
rename to camera/include/camera/CameraParameters.h
diff --git a/camera/include/camera/CameraParameters2.h b/camera/include/camera/CameraParameters2.h
new file mode 100644
index 0000000..f691cd6
--- /dev/null
+++ b/camera/include/camera/CameraParameters2.h
@@ -0,0 +1,203 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_CAMERA_PARAMETERS2_H
+#define ANDROID_HARDWARE_CAMERA_PARAMETERS2_H
+
+#include <utils/Vector.h>
+#include <utils/String8.h>
+#include "CameraParameters.h"
+
+namespace android {
+
+/**
+ * A copy of CameraParameters plus ABI-breaking changes. Needed
+ * because some camera HALs directly link to CameraParameters and cannot
+ * tolerate an ABI change.
+ */
+class CameraParameters2
+{
+public:
+    CameraParameters2();
+    CameraParameters2(const String8 &params) { unflatten(params); }
+    ~CameraParameters2();
+
+    String8 flatten() const;
+    void unflatten(const String8 &params);
+
+    void set(const char *key, const char *value);
+    void set(const char *key, int value);
+    void setFloat(const char *key, float value);
+    // Look up string value by key.
+    // -- The string remains valid until the next set/remove of the same key,
+    //    or until the map gets cleared.
+    const char *get(const char *key) const;
+    int getInt(const char *key) const;
+    float getFloat(const char *key) const;
+
+    // Compare the order that key1 was set vs the order that key2 was set.
+    //
+    // Sets the order parameter to an integer less than, equal to, or greater
+    // than zero if key1's set order was respectively, to be less than, to
+    // match, or to be greater than key2's set order.
+    //
+    // Error codes:
+    //  * NAME_NOT_FOUND - if either key has not been set previously
+    //  * BAD_VALUE - if any of the parameters are NULL
+    status_t compareSetOrder(const char *key1, const char *key2,
+            /*out*/
+            int *order) const;
+
+    void remove(const char *key);
+
+    void setPreviewSize(int width, int height);
+    void getPreviewSize(int *width, int *height) const;
+    void getSupportedPreviewSizes(Vector<Size> &sizes) const;
+
+    // Set the dimensions in pixels to the given width and height
+    // for video frames. The given width and height must be one
+    // of the supported dimensions returned from
+    // getSupportedVideoSizes(). Must not be called if
+    // getSupportedVideoSizes() returns an empty Vector of Size.
+    void setVideoSize(int width, int height);
+    // Retrieve the current dimensions (width and height)
+    // in pixels for video frames, which must be one of the
+    // supported dimensions returned from getSupportedVideoSizes().
+    // Must not be called if getSupportedVideoSizes() returns an
+    // empty Vector of Size.
+    void getVideoSize(int *width, int *height) const;
+    // Retrieve a Vector of supported dimensions (width and height)
+    // in pixels for video frames. If sizes returned from the method
+    // is empty, the camera does not support calls to setVideoSize()
+    // or getVideoSize(). In adddition, it also indicates that
+    // the camera only has a single output, and does not have
+    // separate output for video frames and preview frame.
+    void getSupportedVideoSizes(Vector<Size> &sizes) const;
+    // Retrieve the preferred preview size (width and height) in pixels
+    // for video recording. The given width and height must be one of
+    // supported preview sizes returned from getSupportedPreviewSizes().
+    // Must not be called if getSupportedVideoSizes() returns an empty
+    // Vector of Size. If getSupportedVideoSizes() returns an empty
+    // Vector of Size, the width and height returned from this method
+    // is invalid, and is "-1x-1".
+    void getPreferredPreviewSizeForVideo(int *width, int *height) const;
+
+    void setPreviewFrameRate(int fps);
+    int getPreviewFrameRate() const;
+    void getPreviewFpsRange(int *min_fps, int *max_fps) const;
+    void setPreviewFpsRange(int min_fps, int max_fps);
+    void setPreviewFormat(const char *format);
+    const char *getPreviewFormat() const;
+    void setPictureSize(int width, int height);
+    void getPictureSize(int *width, int *height) const;
+    void getSupportedPictureSizes(Vector<Size> &sizes) const;
+    void setPictureFormat(const char *format);
+    const char *getPictureFormat() const;
+
+    void dump() const;
+    status_t dump(int fd, const Vector<String16>& args) const;
+
+private:
+
+    // Quick and dirty map that maintains insertion order
+    template <typename KeyT, typename ValueT>
+    struct OrderedKeyedVector {
+
+        ssize_t add(const KeyT& key, const ValueT& value) {
+            return mList.add(Pair(key, value));
+        }
+
+        size_t size() const {
+            return mList.size();
+        }
+
+        const KeyT& keyAt(size_t idx) const {
+            return mList[idx].mKey;
+        }
+
+        const ValueT& valueAt(size_t idx) const {
+            return mList[idx].mValue;
+        }
+
+        const ValueT& valueFor(const KeyT& key) const {
+            ssize_t i = indexOfKey(key);
+            LOG_ALWAYS_FATAL_IF(i<0, "%s: key not found", __PRETTY_FUNCTION__);
+
+            return valueAt(i);
+        }
+
+        ssize_t indexOfKey(const KeyT& key) const {
+                size_t vectorIdx = 0;
+                for (; vectorIdx < mList.size(); ++vectorIdx) {
+                    if (mList[vectorIdx].mKey == key) {
+                        return (ssize_t) vectorIdx;
+                    }
+                }
+
+                return NAME_NOT_FOUND;
+        }
+
+        ssize_t removeItem(const KeyT& key) {
+            ssize_t vectorIdx = indexOfKey(key);
+
+            if (vectorIdx < 0) {
+                return vectorIdx;
+            }
+
+            return mList.removeAt(vectorIdx);
+        }
+
+        void clear() {
+            mList.clear();
+        }
+
+        // Same as removing and re-adding. The key's index changes to max.
+        ssize_t replaceValueFor(const KeyT& key, const ValueT& value) {
+            removeItem(key);
+            return add(key, value);
+        }
+
+    private:
+
+        struct Pair {
+            Pair() : mKey(), mValue() {}
+            Pair(const KeyT& key, const ValueT& value) :
+                    mKey(key),
+                    mValue(value) {}
+            KeyT   mKey;
+            ValueT mValue;
+        };
+
+        Vector<Pair> mList;
+    };
+
+    /**
+     * Order matters: Keys that are set() later are stored later in the map.
+     *
+     * If two keys have meaning that conflict, then the later-set key
+     * wins.
+     *
+     * For example, preview FPS and preview FPS range conflict since only
+     * we only want to use the FPS range if that's the last thing that was set.
+     * So in that case, only use preview FPS range if it was set later than
+     * the preview FPS.
+     */
+    OrderedKeyedVector<String8,String8>    mMap;
+};
+
+}; // namespace android
+
+#endif
diff --git a/include/camera/CameraUtils.h b/camera/include/camera/CameraUtils.h
similarity index 100%
rename from include/camera/CameraUtils.h
rename to camera/include/camera/CameraUtils.h
diff --git a/camera/include/camera/CaptureResult.h b/camera/include/camera/CaptureResult.h
new file mode 100644
index 0000000..917d953
--- /dev/null
+++ b/camera/include/camera/CaptureResult.h
@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_CAPTURERESULT_H
+#define ANDROID_HARDWARE_CAPTURERESULT_H
+
+#include <utils/RefBase.h>
+#include <binder/Parcelable.h>
+#include <camera/CameraMetadata.h>
+
+
+namespace android {
+
+namespace hardware {
+namespace camera2 {
+namespace impl {
+
+/**
+ * CaptureResultExtras is a structure to encapsulate various indices for a capture result.
+ * These indices are framework-internal and not sent to the HAL.
+ */
+struct CaptureResultExtras : public android::Parcelable {
+    /**
+     * An integer to index the request sequence that this result belongs to.
+     */
+    int32_t requestId;
+
+    /**
+     * An integer to index this result inside a request sequence, starting from 0.
+     */
+    int32_t burstId;
+
+    /**
+     * TODO: Add documentation for this field.
+     */
+    int32_t afTriggerId;
+
+    /**
+     * TODO: Add documentation for this field.
+     */
+    int32_t precaptureTriggerId;
+
+    /**
+     * A 64bit integer to index the frame number associated with this result.
+     */
+    int64_t frameNumber;
+
+    /**
+     * The partial result count (index) for this capture result.
+     */
+    int32_t partialResultCount;
+
+    /**
+     * For buffer drop errors, the stream ID for the stream that lost a buffer.
+     * Otherwise -1.
+     */
+    int32_t errorStreamId;
+
+    /**
+     * Constructor initializes object as invalid by setting requestId to be -1.
+     */
+    CaptureResultExtras()
+        : requestId(-1),
+          burstId(0),
+          afTriggerId(0),
+          precaptureTriggerId(0),
+          frameNumber(0),
+          partialResultCount(0),
+          errorStreamId(-1) {
+    }
+
+    /**
+     * This function returns true if it's a valid CaptureResultExtras object.
+     * Otherwise, returns false. It is valid only when requestId is non-negative.
+     */
+    bool isValid();
+
+    virtual status_t                readFromParcel(const android::Parcel* parcel) override;
+    virtual status_t                writeToParcel(android::Parcel* parcel) const override;
+};
+} // namespace impl
+} // namespace camera2
+} // namespace hardware
+
+using hardware::camera2::impl::CaptureResultExtras;
+
+struct CaptureResult : public virtual LightRefBase<CaptureResult> {
+    CameraMetadata          mMetadata;
+    CaptureResultExtras     mResultExtras;
+
+    CaptureResult();
+
+    CaptureResult(const CaptureResult& otherResult);
+
+    status_t                readFromParcel(android::Parcel* parcel);
+    status_t                writeToParcel(android::Parcel* parcel) const;
+};
+
+}
+
+#endif /* ANDROID_HARDWARE_CAPTURERESULT_H */
diff --git a/camera/include/camera/ICameraRecordingProxy.h b/camera/include/camera/ICameraRecordingProxy.h
new file mode 100644
index 0000000..02af2f3
--- /dev/null
+++ b/camera/include/camera/ICameraRecordingProxy.h
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_ICAMERA_RECORDING_PROXY_H
+#define ANDROID_HARDWARE_ICAMERA_RECORDING_PROXY_H
+
+#include <vector>
+#include <binder/IInterface.h>
+#include <cutils/native_handle.h>
+#include <utils/RefBase.h>
+
+namespace android {
+
+class ICameraRecordingProxyListener;
+class IMemory;
+class Parcel;
+
+/*
+ * The purpose of ICameraRecordingProxy and ICameraRecordingProxyListener is to
+ * allow applications using the camera during recording.
+ *
+ * Camera service allows only one client at a time. Since camcorder application
+ * needs to own the camera to do things like zoom, the media recorder cannot
+ * access the camera directly during recording. So ICameraRecordingProxy is a
+ * proxy of ICamera, which allows the media recorder to start/stop the recording
+ * and release recording frames. ICameraRecordingProxyListener is an interface
+ * that allows the recorder to receive video frames during recording.
+ *
+ * ICameraRecordingProxy
+ *   startRecording()
+ *   stopRecording()
+ *   releaseRecordingFrame()
+ *
+ * ICameraRecordingProxyListener
+ *   dataCallbackTimestamp()
+
+ * The camcorder app opens the camera and starts the preview. The app passes
+ * ICamera and ICameraRecordingProxy to the media recorder by
+ * MediaRecorder::setCamera(). The recorder uses ICamera to setup the camera in
+ * MediaRecorder::start(). After setup, the recorder disconnects from camera
+ * service. The recorder calls ICameraRecordingProxy::startRecording() and
+ * passes a ICameraRecordingProxyListener to the app. The app connects back to
+ * camera service and starts the recording. The app owns the camera and can do
+ * things like zoom. The media recorder receives the video frames from the
+ * listener and releases them by ICameraRecordingProxy::releaseRecordingFrame.
+ * The recorder calls ICameraRecordingProxy::stopRecording() to stop the
+ * recording.
+ *
+ * The call sequences are as follows:
+ * 1. The app: Camera.unlock().
+ * 2. The app: MediaRecorder.setCamera().
+ * 3. Start recording
+ *    (1) The app: MediaRecorder.start().
+ *    (2) The recorder: ICamera.unlock() and ICamera.disconnect().
+ *    (3) The recorder: ICameraRecordingProxy.startRecording().
+ *    (4) The app: ICamera.reconnect().
+ *    (5) The app: ICamera.startRecording().
+ * 4. During recording
+ *    (1) The recorder: receive frames from ICameraRecordingProxyListener.dataCallbackTimestamp()
+ *    (2) The recorder: release frames by ICameraRecordingProxy.releaseRecordingFrame().
+ * 5. Stop recording
+ *    (1) The app: MediaRecorder.stop()
+ *    (2) The recorder: ICameraRecordingProxy.stopRecording().
+ *    (3) The app: ICamera.stopRecording().
+ */
+
+class ICameraRecordingProxy: public IInterface
+{
+public:
+    DECLARE_META_INTERFACE(CameraRecordingProxy);
+
+    virtual status_t        startRecording(const sp<ICameraRecordingProxyListener>& listener) = 0;
+    virtual void            stopRecording() = 0;
+    virtual void            releaseRecordingFrame(const sp<IMemory>& mem) = 0;
+    virtual void            releaseRecordingFrameHandle(native_handle_t *handle) = 0;
+    virtual void            releaseRecordingFrameHandleBatch(
+                                    const std::vector<native_handle_t*>& handles) = 0;
+};
+
+// ----------------------------------------------------------------------------
+
+class BnCameraRecordingProxy: public BnInterface<ICameraRecordingProxy>
+{
+public:
+    virtual status_t    onTransact( uint32_t code,
+                                    const Parcel& data,
+                                    Parcel* reply,
+                                    uint32_t flags = 0);
+};
+
+}; // namespace android
+
+#endif
diff --git a/camera/include/camera/ICameraRecordingProxyListener.h b/camera/include/camera/ICameraRecordingProxyListener.h
new file mode 100644
index 0000000..da03c56
--- /dev/null
+++ b/camera/include/camera/ICameraRecordingProxyListener.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_ICAMERA_RECORDING_PROXY_LISTENER_H
+#define ANDROID_HARDWARE_ICAMERA_RECORDING_PROXY_LISTENER_H
+
+#include <vector>
+#include <binder/IInterface.h>
+#include <cutils/native_handle.h>
+#include <stdint.h>
+#include <utils/RefBase.h>
+#include <utils/Timers.h>
+
+namespace android {
+
+class Parcel;
+class IMemory;
+
+class ICameraRecordingProxyListener: public IInterface
+{
+public:
+    DECLARE_META_INTERFACE(CameraRecordingProxyListener);
+
+    virtual void dataCallbackTimestamp(nsecs_t timestamp, int32_t msgType,
+                                       const sp<IMemory>& data) = 0;
+
+    virtual void recordingFrameHandleCallbackTimestamp(nsecs_t timestamp,
+                                                       native_handle_t* handle) = 0;
+
+    virtual void recordingFrameHandleCallbackTimestampBatch(
+            const std::vector<nsecs_t>& timestamps,
+            const std::vector<native_handle_t*>& handles) = 0;
+};
+
+// ----------------------------------------------------------------------------
+
+class BnCameraRecordingProxyListener: public BnInterface<ICameraRecordingProxyListener>
+{
+public:
+    virtual status_t    onTransact( uint32_t code,
+                                    const Parcel& data,
+                                    Parcel* reply,
+                                    uint32_t flags = 0);
+};
+
+}; // namespace android
+
+#endif
diff --git a/include/camera/ICameraServiceProxy.h b/camera/include/camera/ICameraServiceProxy.h
similarity index 100%
rename from include/camera/ICameraServiceProxy.h
rename to camera/include/camera/ICameraServiceProxy.h
diff --git a/camera/include/camera/VendorTagDescriptor.h b/camera/include/camera/VendorTagDescriptor.h
new file mode 100644
index 0000000..904fba2
--- /dev/null
+++ b/camera/include/camera/VendorTagDescriptor.h
@@ -0,0 +1,249 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VENDOR_TAG_DESCRIPTOR_H
+
+#include <binder/Parcelable.h>
+#include <utils/Vector.h>
+#include <utils/KeyedVector.h>
+#include <utils/String8.h>
+#include <utils/RefBase.h>
+#include <system/camera_vendor_tags.h>
+#include <unordered_map>
+#include <stdint.h>
+
+namespace android {
+
+class VendorTagDescriptor;
+
+namespace hardware {
+namespace camera2 {
+namespace params {
+
+/**
+ * VendorTagDescriptor objects are parcelable containers for the vendor tag
+ * definitions provided, and are typically used to pass the vendor tag
+ * information enumerated by the HAL to clients of the camera service.
+ */
+class VendorTagDescriptor : public Parcelable {
+    public:
+        virtual ~VendorTagDescriptor();
+
+        VendorTagDescriptor();
+        VendorTagDescriptor(const VendorTagDescriptor& src);
+        VendorTagDescriptor& operator=(const VendorTagDescriptor& rhs);
+
+        void copyFrom(const VendorTagDescriptor& src);
+
+        /**
+         * The following 'get*' methods implement the corresponding
+         * functions defined in
+         * system/media/camera/include/system/camera_vendor_tags.h
+         */
+
+        // Returns the number of vendor tags defined.
+        int getTagCount() const;
+
+        // Returns an array containing the id's of vendor tags defined.
+        void getTagArray(uint32_t* tagArray) const;
+
+        // Returns the section name string for a given vendor tag id.
+        const char* getSectionName(uint32_t tag) const;
+
+        // Returns the tag name string for a given vendor tag id.
+        const char* getTagName(uint32_t tag) const;
+
+        // Returns the tag type for a given vendor tag id.
+        int getTagType(uint32_t tag) const;
+
+        /**
+         * Write the VendorTagDescriptor object into the given parcel.
+         *
+         * Returns OK on success, or a negative error code.
+         */
+        virtual status_t writeToParcel(
+                /*out*/
+                android::Parcel* parcel) const override;
+
+        /**
+         * Convenience method to get a vector containing all vendor tag
+         * sections, or an empty vector if none are defined.
+         * The pointer is valid for the lifetime of the VendorTagDescriptor,
+         * or until readParcel or copyFrom is invoked.
+         */
+        const SortedVector<String8>* getAllSectionNames() const;
+
+        /**
+         * Lookup the tag id for a given tag name and section.
+         *
+         * Returns OK on success, or a negative error code.
+         */
+        status_t lookupTag(const String8& name, const String8& section, /*out*/uint32_t* tag) const;
+
+        /**
+         * Dump the currently configured vendor tags to a file descriptor.
+         */
+        void dump(int fd, int verbosity, int indentation) const;
+
+        /**
+         * Read values VendorTagDescriptor object from the given parcel.
+         *
+         * Returns OK on success, or a negative error code.
+         */
+        virtual status_t readFromParcel(const android::Parcel* parcel) override;
+
+    protected:
+        KeyedVector<String8, KeyedVector<String8, uint32_t>*> mReverseMapping;
+        KeyedVector<uint32_t, String8> mTagToNameMap;
+        KeyedVector<uint32_t, uint32_t> mTagToSectionMap; // Value is offset in mSections
+        KeyedVector<uint32_t, int32_t> mTagToTypeMap;
+        SortedVector<String8> mSections;
+        // must be int32_t to be compatible with Parcel::writeInt32
+        int32_t mTagCount;
+
+        vendor_tag_ops mVendorOps;
+};
+} /* namespace params */
+} /* namespace camera2 */
+} /* namespace hardware */
+
+/**
+ * This version of VendorTagDescriptor must be stored in Android sp<>, and adds support for using it
+ * as a global tag descriptor.
+ *
+ * It's a child class of the basic hardware::camera2::params::VendorTagDescriptor since basic
+ * Parcelable objects cannot require being kept in an sp<> and still work with auto-generated AIDL
+ * interface implementations.
+ */
+class VendorTagDescriptor :
+            public ::android::hardware::camera2::params::VendorTagDescriptor,
+            public LightRefBase<VendorTagDescriptor> {
+
+  public:
+
+    /**
+     * Create a VendorTagDescriptor object from the given vendor_tag_ops_t
+     * struct.
+     *
+     * Returns OK on success, or a negative error code.
+     */
+    static status_t createDescriptorFromOps(const vendor_tag_ops_t* vOps,
+            /*out*/
+            sp<VendorTagDescriptor>& descriptor);
+
+    /**
+     * Sets the global vendor tag descriptor to use for this process.
+     * Camera metadata operations that access vendor tags will use the
+     * vendor tag definitions set this way.
+     *
+     * Returns OK on success, or a negative error code.
+     */
+    static status_t setAsGlobalVendorTagDescriptor(const sp<VendorTagDescriptor>& desc);
+
+    /**
+     * Returns the global vendor tag descriptor used by this process.
+     * This will contain NULL if no vendor tags are defined.
+     */
+    static sp<VendorTagDescriptor> getGlobalVendorTagDescriptor();
+
+    /**
+     * Clears the global vendor tag descriptor used by this process.
+     */
+    static void clearGlobalVendorTagDescriptor();
+
+};
+
+namespace hardware {
+namespace camera2 {
+namespace params {
+
+class VendorTagDescriptorCache : public Parcelable {
+  public:
+
+    VendorTagDescriptorCache() {};
+
+    int32_t addVendorDescriptor(metadata_vendor_id_t id,
+            sp<android::VendorTagDescriptor> desc);
+
+    int32_t getVendorTagDescriptor(
+            metadata_vendor_id_t id,
+            sp<android::VendorTagDescriptor> *desc /*out*/);
+
+    // Parcelable interface
+    status_t writeToParcel(Parcel* parcel) const override;
+    status_t readFromParcel(const Parcel* parcel) override;
+
+    // Returns the number of vendor tags defined.
+    int getTagCount(metadata_vendor_id_t id) const;
+
+    // Returns an array containing the id's of vendor tags defined.
+    void getTagArray(uint32_t* tagArray, metadata_vendor_id_t id) const;
+
+    // Returns the section name string for a given vendor tag id.
+    const char* getSectionName(uint32_t tag, metadata_vendor_id_t id) const;
+
+    // Returns the tag name string for a given vendor tag id.
+    const char* getTagName(uint32_t tag, metadata_vendor_id_t id) const;
+
+    // Returns the tag type for a given vendor tag id.
+    int getTagType(uint32_t tag, metadata_vendor_id_t id) const;
+
+    /**
+     * Dump the currently configured vendor tags to a file descriptor.
+     */
+    void dump(int fd, int verbosity, int indentation) const;
+
+  protected:
+    std::unordered_map<metadata_vendor_id_t, sp<android::VendorTagDescriptor>> mVendorMap;
+    struct vendor_tag_cache_ops mVendorCacheOps;
+};
+
+} /* namespace params */
+} /* namespace camera2 */
+} /* namespace hardware */
+
+class VendorTagDescriptorCache :
+        public ::android::hardware::camera2::params::VendorTagDescriptorCache,
+        public LightRefBase<VendorTagDescriptorCache> {
+  public:
+
+    /**
+     * Sets the global vendor tag descriptor cache to use for this process.
+     * Camera metadata operations that access vendor tags will use the
+     * vendor tag definitions set this way.
+     *
+     * Returns OK on success, or a negative error code.
+     */
+    static status_t setAsGlobalVendorTagCache(
+            const sp<VendorTagDescriptorCache>& cache);
+
+    /**
+     * Returns the global vendor tag cache used by this process.
+     * This will contain NULL if no vendor tags are defined.
+     */
+    static sp<VendorTagDescriptorCache> getGlobalVendorTagCache();
+
+    /**
+     * Clears the global vendor tag cache used by this process.
+     */
+    static void clearGlobalVendorTagCache();
+
+};
+
+} /* namespace android */
+
+#define VENDOR_TAG_DESCRIPTOR_H
+#endif /* VENDOR_TAG_DESCRIPTOR_H */
diff --git a/camera/include/camera/android/hardware/ICamera.h b/camera/include/camera/android/hardware/ICamera.h
new file mode 100644
index 0000000..80823d6
--- /dev/null
+++ b/camera/include/camera/android/hardware/ICamera.h
@@ -0,0 +1,159 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_ICAMERA_H
+#define ANDROID_HARDWARE_ICAMERA_H
+
+#include <utils/RefBase.h>
+#include <binder/IInterface.h>
+#include <binder/Parcel.h>
+#include <binder/IMemory.h>
+#include <binder/Status.h>
+#include <utils/String8.h>
+
+namespace android {
+
+class IGraphicBufferProducer;
+class Surface;
+
+namespace hardware {
+
+class ICameraClient;
+
+class ICamera: public android::IInterface
+{
+    /**
+     * Keep up-to-date with ICamera.aidl in frameworks/base
+     */
+public:
+    enum {
+        // Pass real YUV data in video buffers through ICameraClient.dataCallbackTimestamp().
+        VIDEO_BUFFER_MODE_DATA_CALLBACK_YUV = 0,
+        // Pass metadata in video buffers through ICameraClient.dataCallbackTimestamp().
+        VIDEO_BUFFER_MODE_DATA_CALLBACK_METADATA = 1,
+        // Pass video buffers through IGraphicBufferProducer set with setVideoTarget().
+        VIDEO_BUFFER_MODE_BUFFER_QUEUE = 2,
+    };
+
+    DECLARE_META_INTERFACE(Camera);
+
+    virtual binder::Status  disconnect() = 0;
+
+    // connect new client with existing camera remote
+    virtual status_t        connect(const sp<ICameraClient>& client) = 0;
+
+    // prevent other processes from using this ICamera interface
+    virtual status_t        lock() = 0;
+
+    // allow other processes to use this ICamera interface
+    virtual status_t        unlock() = 0;
+
+    // pass the buffered IGraphicBufferProducer to the camera service
+    virtual status_t        setPreviewTarget(
+            const sp<IGraphicBufferProducer>& bufferProducer) = 0;
+
+    // set the preview callback flag to affect how the received frames from
+    // preview are handled. Enabling preview callback flags disables any active
+    // preview callback surface set by setPreviewCallbackTarget().
+    virtual void            setPreviewCallbackFlag(int flag) = 0;
+    // set a buffer interface to use for client-received preview frames instead
+    // of preview callback buffers. Passing a valid interface here disables any
+    // active preview callbacks set by setPreviewCallbackFlag(). Passing NULL
+    // disables the use of the callback target.
+    virtual status_t        setPreviewCallbackTarget(
+            const sp<IGraphicBufferProducer>& callbackProducer) = 0;
+
+    // start preview mode, must call setPreviewTarget first
+    virtual status_t        startPreview() = 0;
+
+    // stop preview mode
+    virtual void            stopPreview() = 0;
+
+    // get preview state
+    virtual bool            previewEnabled() = 0;
+
+    // start recording mode
+    virtual status_t        startRecording() = 0;
+
+    // stop recording mode
+    virtual void            stopRecording() = 0;
+
+    // get recording state
+    virtual bool            recordingEnabled() = 0;
+
+    // Release a recording frame that was received via ICameraClient::dataCallbackTimestamp.
+    virtual void            releaseRecordingFrame(const sp<IMemory>& mem) = 0;
+
+    // Release a recording frame handle that was received via
+    // ICameraClient::recordingFrameHandleCallbackTimestamp.
+    virtual void            releaseRecordingFrameHandle(native_handle_t *handle) = 0;
+
+    // Release a batch of recording frame handles that was received via
+    // ICameraClient::recordingFrameHandleCallbackTimestampBatch
+    virtual void            releaseRecordingFrameHandleBatch(
+            const std::vector<native_handle_t*>& handles) = 0;
+
+    // auto focus
+    virtual status_t        autoFocus() = 0;
+
+    // cancel auto focus
+    virtual status_t        cancelAutoFocus() = 0;
+
+    /*
+     * take a picture.
+     * @param msgType the message type an application selectively turn on/off
+     * on a photo-by-photo basis. The supported message types are:
+     * CAMERA_MSG_SHUTTER, CAMERA_MSG_RAW_IMAGE, CAMERA_MSG_COMPRESSED_IMAGE,
+     * and CAMERA_MSG_POSTVIEW_FRAME. Any other message types will be ignored.
+     */
+    virtual status_t        takePicture(int msgType) = 0;
+
+    // set preview/capture parameters - key/value pairs
+    virtual status_t        setParameters(const String8& params) = 0;
+
+    // get preview/capture parameters - key/value pairs
+    virtual String8         getParameters() const = 0;
+
+    // send command to camera driver
+    virtual status_t        sendCommand(int32_t cmd, int32_t arg1, int32_t arg2) = 0;
+
+
+    // Tell camera how to pass video buffers. videoBufferMode is one of VIDEO_BUFFER_MODE_*.
+    // Returns OK if the specified video buffer mode is supported. If videoBufferMode is
+    // VIDEO_BUFFER_MODE_BUFFER_QUEUE, setVideoTarget() must be called before starting video
+    // recording.
+    virtual status_t        setVideoBufferMode(int32_t videoBufferMode) = 0;
+
+    // Set the video buffer producer for camera to use in VIDEO_BUFFER_MODE_BUFFER_QUEUE mode.
+    virtual status_t        setVideoTarget(
+            const sp<IGraphicBufferProducer>& bufferProducer) = 0;
+};
+
+// ----------------------------------------------------------------------------
+
+class BnCamera: public android::BnInterface<ICamera>
+{
+public:
+    virtual status_t    onTransact( uint32_t code,
+                                    const Parcel& data,
+                                    Parcel* reply,
+                                    uint32_t flags = 0);
+};
+
+} // namespace hardware
+} // namespace android
+
+#endif
diff --git a/camera/include/camera/android/hardware/ICameraClient.h b/camera/include/camera/android/hardware/ICameraClient.h
new file mode 100644
index 0000000..8e46d17
--- /dev/null
+++ b/camera/include/camera/android/hardware/ICameraClient.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_ICAMERA_APP_H
+#define ANDROID_HARDWARE_ICAMERA_APP_H
+
+#include <utils/RefBase.h>
+#include <binder/IInterface.h>
+#include <binder/Parcel.h>
+#include <binder/IMemory.h>
+#include <utils/Timers.h>
+#include <system/camera.h>
+
+namespace android {
+namespace hardware {
+
+class ICameraClient: public android::IInterface
+{
+public:
+    DECLARE_META_INTERFACE(CameraClient);
+
+    virtual void            notifyCallback(int32_t msgType, int32_t ext1, int32_t ext2) = 0;
+    virtual void            dataCallback(int32_t msgType, const sp<IMemory>& data,
+                                         camera_frame_metadata_t *metadata) = 0;
+    virtual void            dataCallbackTimestamp(nsecs_t timestamp, int32_t msgType, const sp<IMemory>& data) = 0;
+
+    // Invoked to send a recording frame handle with a timestamp. Call
+    // ICamera::releaseRecordingFrameHandle to release the frame handle.
+    virtual void            recordingFrameHandleCallbackTimestamp(nsecs_t timestamp,
+                                         native_handle_t* handle) = 0;
+
+    // Invoked to send a batch of recording frame handles with timestamp. Call
+    // ICamera::releaseRecordingFrameHandleBatch to release the frame handles.
+    // Size of timestamps and handles must match
+    virtual void            recordingFrameHandleCallbackTimestampBatch(
+                                        const std::vector<nsecs_t>& timestamps,
+                                        const std::vector<native_handle_t*>& handles) = 0;
+};
+
+// ----------------------------------------------------------------------------
+
+class BnCameraClient: public android::BnInterface<ICameraClient>
+{
+public:
+    virtual status_t    onTransact( uint32_t code,
+                                    const Parcel& data,
+                                    Parcel* reply,
+                                    uint32_t flags = 0);
+};
+
+} // namespace hardware
+} // namespace android
+
+#endif
diff --git a/camera/include/camera/camera2/CaptureRequest.h b/camera/include/camera/camera2/CaptureRequest.h
new file mode 100644
index 0000000..0180183
--- /dev/null
+++ b/camera/include/camera/camera2/CaptureRequest.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_PHOTOGRAPHY_CAPTUREREQUEST_H
+#define ANDROID_HARDWARE_PHOTOGRAPHY_CAPTUREREQUEST_H
+
+#include <utils/RefBase.h>
+#include <utils/Vector.h>
+#include <binder/Parcelable.h>
+#include <camera/CameraMetadata.h>
+
+namespace android {
+
+class Surface;
+
+namespace hardware {
+namespace camera2 {
+
+struct CaptureRequest : public Parcelable {
+
+    // those are needed so we can use a forward declaration of Surface, otherwise
+    // the type is incomplete when the ctor/dtors are generated. This has the added
+    // benefit that ctor/dtors are not inlined, which is good because they're not trivial
+    // (because of the vtable and Vector<>)
+    CaptureRequest();
+    CaptureRequest(const CaptureRequest& rhs);
+    CaptureRequest(CaptureRequest&& rhs) noexcept;
+    virtual ~CaptureRequest();
+
+    CameraMetadata          mMetadata;
+    Vector<sp<Surface> >    mSurfaceList;
+    bool                    mIsReprocess;
+
+    /**
+     * Keep impl up-to-date with CaptureRequest.java in frameworks/base
+     */
+    status_t                readFromParcel(const android::Parcel* parcel) override;
+    status_t                writeToParcel(android::Parcel* parcel) const override;
+};
+
+} // namespace camera2
+} // namespace hardware
+
+struct CaptureRequest :
+        public RefBase, public hardware::camera2::CaptureRequest {
+  public:
+    // Same as android::hardware::camera2::CaptureRequest, except that you can
+    // put this in an sp<>
+};
+
+} // namespace android
+
+#endif
diff --git a/camera/include/camera/camera2/OutputConfiguration.h b/camera/include/camera/camera2/OutputConfiguration.h
new file mode 100644
index 0000000..8e641c7
--- /dev/null
+++ b/camera/include/camera/camera2/OutputConfiguration.h
@@ -0,0 +1,134 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_CAMERA2_OUTPUTCONFIGURATION_H
+#define ANDROID_HARDWARE_CAMERA2_OUTPUTCONFIGURATION_H
+
+#include <gui/IGraphicBufferProducer.h>
+#include <binder/Parcelable.h>
+
+namespace android {
+
+class Surface;
+
+namespace hardware {
+namespace camera2 {
+namespace params {
+
+class OutputConfiguration : public android::Parcelable {
+public:
+
+    static const int INVALID_ROTATION;
+    static const int INVALID_SET_ID;
+    enum SurfaceType{
+        SURFACE_TYPE_UNKNOWN = -1,
+        SURFACE_TYPE_SURFACE_VIEW = 0,
+        SURFACE_TYPE_SURFACE_TEXTURE = 1
+    };
+    const std::vector<sp<IGraphicBufferProducer>>& getGraphicBufferProducers() const;
+    int                        getRotation() const;
+    int                        getSurfaceSetID() const;
+    int                        getSurfaceType() const;
+    int                        getWidth() const;
+    int                        getHeight() const;
+    bool                       isDeferred() const;
+    bool                       isShared() const;
+    /**
+     * Keep impl up-to-date with OutputConfiguration.java in frameworks/base
+     */
+    virtual status_t           writeToParcel(android::Parcel* parcel) const override;
+
+    virtual status_t           readFromParcel(const android::Parcel* parcel) override;
+
+    // getGraphicBufferProducer will be NULL
+    // getRotation will be INVALID_ROTATION
+    // getSurfaceSetID will be INVALID_SET_ID
+    OutputConfiguration();
+
+    // getGraphicBufferProducer will be NULL if error occurred
+    // getRotation will be INVALID_ROTATION if error occurred
+    // getSurfaceSetID will be INVALID_SET_ID if error occurred
+    OutputConfiguration(const android::Parcel& parcel);
+
+    OutputConfiguration(sp<IGraphicBufferProducer>& gbp, int rotation,
+            int surfaceSetID = INVALID_SET_ID);
+
+    bool operator == (const OutputConfiguration& other) const {
+        return ( mRotation == other.mRotation &&
+                mSurfaceSetID == other.mSurfaceSetID &&
+                mSurfaceType == other.mSurfaceType &&
+                mWidth == other.mWidth &&
+                mHeight == other.mHeight &&
+                mIsDeferred == other.mIsDeferred &&
+                mIsShared == other.mIsShared &&
+                gbpsEqual(other));
+    }
+    bool operator != (const OutputConfiguration& other) const {
+        return !(*this == other);
+    }
+    bool operator < (const OutputConfiguration& other) const {
+        if (*this == other) return false;
+        if (mSurfaceSetID != other.mSurfaceSetID) {
+            return mSurfaceSetID < other.mSurfaceSetID;
+        }
+        if (mSurfaceType != other.mSurfaceType) {
+            return mSurfaceType < other.mSurfaceType;
+        }
+        if (mWidth != other.mWidth) {
+            return mWidth < other.mWidth;
+        }
+        if (mHeight != other.mHeight) {
+            return mHeight < other.mHeight;
+        }
+        if (mRotation != other.mRotation) {
+            return mRotation < other.mRotation;
+        }
+        if (mIsDeferred != other.mIsDeferred) {
+            return mIsDeferred < other.mIsDeferred;
+        }
+        if (mIsShared != other.mIsShared) {
+            return mIsShared < other.mIsShared;
+        }
+        return gbpsLessThan(other);
+    }
+    bool operator > (const OutputConfiguration& other) const {
+        return (*this != other && !(*this < other));
+    }
+
+    bool gbpsEqual(const OutputConfiguration& other) const;
+    bool gbpsLessThan(const OutputConfiguration& other) const;
+private:
+    std::vector<sp<IGraphicBufferProducer>> mGbps;
+    int                        mRotation;
+    int                        mSurfaceSetID;
+    int                        mSurfaceType;
+    int                        mWidth;
+    int                        mHeight;
+    bool                       mIsDeferred;
+    bool                       mIsShared;
+    // helper function
+    static String16 readMaybeEmptyString16(const android::Parcel* parcel);
+};
+} // namespace params
+} // namespace camera2
+} // namespace hardware
+
+
+using hardware::camera2::params::OutputConfiguration;
+
+}; // namespace android
+
+#endif
diff --git a/camera/include/camera/camera2/SubmitInfo.h b/camera/include/camera/camera2/SubmitInfo.h
new file mode 100644
index 0000000..8f271c0
--- /dev/null
+++ b/camera/include/camera/camera2/SubmitInfo.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_CAMERA2_UTIL_SUBMITINFO_H
+#define ANDROID_HARDWARE_CAMERA2_UTIL_SUBMITINFO_H
+
+#include <binder/Parcel.h>
+#include <binder/Parcelable.h>
+
+namespace android {
+namespace hardware {
+namespace camera2 {
+namespace utils {
+
+struct SubmitInfo : public android::Parcelable {
+public:
+
+    int32_t mRequestId;
+    int64_t mLastFrameNumber;
+
+    virtual status_t writeToParcel(android::Parcel *parcel) const override;
+    virtual status_t readFromParcel(const android::Parcel* parcel) override;
+
+};
+
+} // namespace utils
+} // namespace camera2
+} // namespace hardware
+} // namespace android
+
+#endif
diff --git a/camera/include/camera/ndk/NdkCameraCaptureSession.h b/camera/include/camera/ndk/NdkCameraCaptureSession.h
new file mode 100644
index 0000000..d96f538
--- /dev/null
+++ b/camera/include/camera/ndk/NdkCameraCaptureSession.h
@@ -0,0 +1,598 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @addtogroup Camera
+ * @{
+ */
+
+/**
+ * @file NdkCameraCaptureSession.h
+ */
+
+/*
+ * This file defines an NDK API.
+ * Do not remove methods.
+ * Do not change method signatures.
+ * Do not change the value of constants.
+ * Do not change the size of any of the classes defined in here.
+ * Do not reference types that are not part of the NDK.
+ * Do not #include files that aren't part of the NDK.
+ */
+#include <sys/cdefs.h>
+
+#include <android/native_window.h>
+#include "NdkCameraError.h"
+#include "NdkCameraMetadata.h"
+
+#ifndef _NDK_CAMERA_CAPTURE_SESSION_H
+#define _NDK_CAMERA_CAPTURE_SESSION_H
+
+__BEGIN_DECLS
+
+#if __ANDROID_API__ >= 24
+
+/**
+ * ACameraCaptureSession is an opaque type that manages frame captures of a camera device.
+ *
+ * A pointer can be obtained using {@link ACameraDevice_createCaptureSession} method.
+ */
+typedef struct ACameraCaptureSession ACameraCaptureSession;
+
+/**
+ * The definition of camera capture session state callback.
+ *
+ * @param context The optional application context provided by user in
+ *                {@link ACameraCaptureSession_stateCallbacks}.
+ * @param session The camera capture session whose state is changing.
+ */
+typedef void (*ACameraCaptureSession_stateCallback)(void* context, ACameraCaptureSession *session);
+
+typedef struct ACameraCaptureSession_stateCallbacks {
+    /// optional application context.
+    void*                               context;
+
+    /**
+     * This callback is called when the session is closed and deleted from memory.
+     *
+     * <p>A session is closed when {@link ACameraCaptureSession_close} is called, a new session
+     * is created by the parent camera device,
+     * or when the parent camera device is closed (either by the user closing the device,
+     * or due to a camera device disconnection or fatal error).</p>
+     *
+     * <p>Once this callback is called, all access to this ACameraCaptureSession object will cause
+     * a crash.</p>
+     */
+    ACameraCaptureSession_stateCallback onClosed;
+
+    /**
+     * This callback is called every time the session has no more capture requests to process.
+     *
+     * <p>This callback will be invoked any time the session finishes processing
+     * all of its active capture requests, and no repeating request or burst is set up.</p>
+     */
+    ACameraCaptureSession_stateCallback onReady;
+
+    /**
+     * This callback is called when the session starts actively processing capture requests.
+     *
+     * <p>If the session runs out of capture requests to process and calls {@link onReady},
+     * then this callback will be invoked again once new requests are submitted for capture.</p>
+     */
+    ACameraCaptureSession_stateCallback onActive;
+} ACameraCaptureSession_stateCallbacks;
+
+/// Enum for describing error reason in {@link ACameraCaptureFailure}
+enum {
+    /**
+     * The capture session has dropped this frame due to an
+     * {@link ACameraCaptureSession_abortCaptures} call.
+     */
+    CAPTURE_FAILURE_REASON_FLUSHED = 0,
+
+    /**
+     * The capture session has dropped this frame due to an error in the framework.
+     */
+    CAPTURE_FAILURE_REASON_ERROR
+};
+
+/// Struct to describe a capture failure
+typedef struct ACameraCaptureFailure {
+    /**
+     * The frame number associated with this failed capture.
+     *
+     * <p>Whenever a request has been processed, regardless of failed capture or success,
+     * it gets a unique frame number assigned to its future result/failed capture.</p>
+     *
+     * <p>This value monotonically increments, starting with 0,
+     * for every new result or failure; and the scope is the lifetime of the
+     * {@link ACameraDevice}.</p>
+     */
+    int64_t frameNumber;
+
+    /**
+     * Determine why the request was dropped, whether due to an error or to a user
+     * action.
+     *
+     * @see CAPTURE_FAILURE_REASON_ERROR
+     * @see CAPTURE_FAILURE_REASON_FLUSHED
+     */
+    int     reason;
+
+    /**
+     * The sequence ID for this failed capture that was returned by the
+     * {@link ACameraCaptureSession_capture} or {@link ACameraCaptureSession_setRepeatingRequest}.
+     *
+     * <p>The sequence ID is a unique monotonically increasing value starting from 0,
+     * incremented every time a new group of requests is submitted to the ACameraDevice.</p>
+     */
+    int     sequenceId;
+
+    /**
+     * Determine if the image was captured from the camera.
+     *
+     * <p>If the image was not captured, no image buffers will be available.
+     * If the image was captured, then image buffers may be available.</p>
+     *
+     */
+    bool    wasImageCaptured;
+} ACameraCaptureFailure;
+
+/**
+ * The definition of camera capture start callback.
+ *
+ * @param context The optional application context provided by user in
+ *                {@link ACameraCaptureSession_captureCallbacks}.
+ * @param session The camera capture session of interest.
+ * @param request The capture request that is starting. Note that this pointer points to a copy of
+ *                capture request sent by application, so the address is different to what
+ *                application sent but the content will match. This request will be freed by
+ *                framework immediately after this callback returns.
+ * @param timestamp The timestamp when the capture is started. This timestmap will match
+ *                  {@link ACAMERA_SENSOR_TIMESTAMP} of the {@link ACameraMetadata} in
+ *                  {@link ACameraCaptureSession_captureCallbacks#onCaptureCompleted} callback.
+ */
+typedef void (*ACameraCaptureSession_captureCallback_start)(
+        void* context, ACameraCaptureSession* session,
+        const ACaptureRequest* request, int64_t timestamp);
+
+/**
+ * The definition of camera capture progress/result callback.
+ *
+ * @param context The optional application context provided by user in
+ *                {@link ACameraCaptureSession_captureCallbacks}.
+ * @param session The camera capture session of interest.
+ * @param request The capture request of interest. Note that this pointer points to a copy of
+ *                capture request sent by application, so the address is different to what
+ *                application sent but the content will match. This request will be freed by
+ *                framework immediately after this callback returns.
+ * @param result The capture result metadata reported by camera device. The memory is managed by
+ *                camera framework. Do not access this pointer after this callback returns.
+ */
+typedef void (*ACameraCaptureSession_captureCallback_result)(
+        void* context, ACameraCaptureSession* session,
+        ACaptureRequest* request, const ACameraMetadata* result);
+
+/**
+ * The definition of camera capture failure callback.
+ *
+ * @param context The optional application context provided by user in
+ *                {@link ACameraCaptureSession_captureCallbacks}.
+ * @param session The camera capture session of interest.
+ * @param request The capture request of interest. Note that this pointer points to a copy of
+ *                capture request sent by application, so the address is different to what
+ *                application sent but the content will match. This request will be freed by
+ *                framework immediately after this callback returns.
+ * @param failure The {@link ACameraCaptureFailure} desribes the capture failure. The memory is
+ *                managed by camera framework. Do not access this pointer after this callback
+ *                returns.
+ */
+typedef void (*ACameraCaptureSession_captureCallback_failed)(
+        void* context, ACameraCaptureSession* session,
+        ACaptureRequest* request, ACameraCaptureFailure* failure);
+
+/**
+ * The definition of camera sequence end callback.
+ *
+ * @param context The optional application context provided by user in
+ *                {@link ACameraCaptureSession_captureCallbacks}.
+ * @param session The camera capture session of interest.
+ * @param sequenceId The capture sequence ID of the finished sequence.
+ * @param frameNumber The frame number of the last frame of this sequence.
+ */
+typedef void (*ACameraCaptureSession_captureCallback_sequenceEnd)(
+        void* context, ACameraCaptureSession* session,
+        int sequenceId, int64_t frameNumber);
+
+/**
+ * The definition of camera sequence aborted callback.
+ *
+ * @param context The optional application context provided by user in
+ *                {@link ACameraCaptureSession_captureCallbacks}.
+ * @param session The camera capture session of interest.
+ * @param sequenceId The capture sequence ID of the aborted sequence.
+ */
+typedef void (*ACameraCaptureSession_captureCallback_sequenceAbort)(
+        void* context, ACameraCaptureSession* session,
+        int sequenceId);
+
+/**
+ * The definition of camera buffer lost callback.
+ *
+ * @param context The optional application context provided by user in
+ *                {@link ACameraCaptureSession_captureCallbacks}.
+ * @param session The camera capture session of interest.
+ * @param request The capture request of interest. Note that this pointer points to a copy of
+ *                capture request sent by application, so the address is different to what
+ *                application sent but the content will match. This request will be freed by
+ *                framework immediately after this callback returns.
+ * @param window The {@link ANativeWindow} that the lost buffer would have been sent to.
+ * @param frameNumber The frame number of the lost buffer.
+ */
+typedef void (*ACameraCaptureSession_captureCallback_bufferLost)(
+        void* context, ACameraCaptureSession* session,
+        ACaptureRequest* request, ANativeWindow* window, int64_t frameNumber);
+
+typedef struct ACameraCaptureSession_captureCallbacks {
+    /// optional application context.
+    void*                                               context;
+
+    /**
+     * This callback is called when the camera device has started capturing
+     * the output image for the request, at the beginning of image exposure.
+     *
+     * <p>This callback is invoked right as
+     * the capture of a frame begins, so it is the most appropriate time
+     * for playing a shutter sound, or triggering UI indicators of capture.</p>
+     *
+     * <p>The request that is being used for this capture is provided, along
+     * with the actual timestamp for the start of exposure.
+     * This timestamp matches the timestamps that will be
+     * included in {@link ACAMERA_SENSOR_TIMESTAMP} of the {@link ACameraMetadata} in
+     * {@link onCaptureCompleted} callback,
+     * and in the buffers sent to each output ANativeWindow. These buffer
+     * timestamps are accessible through, for example,
+     * {@link AImage_getTimestamp} or
+     * <a href="http://developer.android.com/reference/android/graphics/SurfaceTexture.html#getTimestamp()">
+     * android.graphics.SurfaceTexture#getTimestamp()</a>.</p>
+     *
+     * <p>Note that the ACaptureRequest pointer in the callback will not match what application has
+     * submitted, but the contents the ACaptureRequest will match what application submitted.</p>
+     *
+     */
+    ACameraCaptureSession_captureCallback_start         onCaptureStarted;
+
+    /**
+     * This callback is called when an image capture makes partial forward progress; some
+     * (but not all) results from an image capture are available.
+     *
+     * <p>The result provided here will contain some subset of the fields of
+     * a full result. Multiple {@link onCaptureProgressed} calls may happen per
+     * capture; a given result field will only be present in one partial
+     * capture at most. The final {@link onCaptureCompleted} call will always
+     * contain all the fields (in particular, the union of all the fields of all
+     * the partial results composing the total result).</p>
+     *
+     * <p>For each request, some result data might be available earlier than others. The typical
+     * delay between each partial result (per request) is a single frame interval.
+     * For performance-oriented use-cases, applications should query the metadata they need
+     * to make forward progress from the partial results and avoid waiting for the completed
+     * result.</p>
+     *
+     * <p>For a particular request, {@link onCaptureProgressed} may happen before or after
+     * {@link onCaptureStarted}.</p>
+     *
+     * <p>Each request will generate at least `1` partial results, and at most
+     * {@link ACAMERA_REQUEST_PARTIAL_RESULT_COUNT} partial results.</p>
+     *
+     * <p>Depending on the request settings, the number of partial results per request
+     * will vary, although typically the partial count could be the same as long as the
+     * camera device subsystems enabled stay the same.</p>
+     *
+     * <p>Note that the ACaptureRequest pointer in the callback will not match what application has
+     * submitted, but the contents the ACaptureRequest will match what application submitted.</p>
+     */
+    ACameraCaptureSession_captureCallback_result        onCaptureProgressed;
+
+    /**
+     * This callback is called when an image capture has fully completed and all the
+     * result metadata is available.
+     *
+     * <p>This callback will always fire after the last {@link onCaptureProgressed};
+     * in other words, no more partial results will be delivered once the completed result
+     * is available.</p>
+     *
+     * <p>For performance-intensive use-cases where latency is a factor, consider
+     * using {@link onCaptureProgressed} instead.</p>
+     *
+     * <p>Note that the ACaptureRequest pointer in the callback will not match what application has
+     * submitted, but the contents the ACaptureRequest will match what application submitted.</p>
+     */
+    ACameraCaptureSession_captureCallback_result        onCaptureCompleted;
+
+    /**
+     * This callback is called instead of {@link onCaptureCompleted} when the
+     * camera device failed to produce a capture result for the
+     * request.
+     *
+     * <p>Other requests are unaffected, and some or all image buffers from
+     * the capture may have been pushed to their respective output
+     * streams.</p>
+     *
+     * <p>Note that the ACaptureRequest pointer in the callback will not match what application has
+     * submitted, but the contents the ACaptureRequest will match what application submitted.</p>
+     *
+     * @see ACameraCaptureFailure
+     */
+    ACameraCaptureSession_captureCallback_failed        onCaptureFailed;
+
+    /**
+     * This callback is called independently of the others in {@link ACameraCaptureSession_captureCallbacks},
+     * when a capture sequence finishes and all capture result
+     * or capture failure for it have been returned via this {@link ACameraCaptureSession_captureCallbacks}.
+     *
+     * <p>In total, there will be at least one result/failure returned by this listener
+     * before this callback is invoked. If the capture sequence is aborted before any
+     * requests have been processed, {@link onCaptureSequenceAborted} is invoked instead.</p>
+     */
+    ACameraCaptureSession_captureCallback_sequenceEnd   onCaptureSequenceCompleted;
+
+    /**
+     * This callback is called independently of the others in {@link ACameraCaptureSession_captureCallbacks},
+     * when a capture sequence aborts before any capture result
+     * or capture failure for it have been returned via this {@link ACameraCaptureSession_captureCallbacks}.
+     *
+     * <p>Due to the asynchronous nature of the camera device, not all submitted captures
+     * are immediately processed. It is possible to clear out the pending requests
+     * by a variety of operations such as {@link ACameraCaptureSession_stopRepeating} or
+     * {@link ACameraCaptureSession_abortCaptures}. When such an event happens,
+     * {@link onCaptureSequenceCompleted} will not be called.</p>
+     */
+    ACameraCaptureSession_captureCallback_sequenceAbort onCaptureSequenceAborted;
+
+    /**
+     * This callback is called if a single buffer for a capture could not be sent to its
+     * destination ANativeWindow.
+     *
+     * <p>If the whole capture failed, then {@link onCaptureFailed} will be called instead. If
+     * some but not all buffers were captured but the result metadata will not be available,
+     * then onCaptureFailed will be invoked with {@link ACameraCaptureFailure#wasImageCaptured}
+     * returning true, along with one or more calls to {@link onCaptureBufferLost} for the
+     * failed outputs.</p>
+     *
+     * <p>Note that the ACaptureRequest pointer in the callback will not match what application has
+     * submitted, but the contents the ACaptureRequest will match what application submitted.
+     * The ANativeWindow pointer will always match what application submitted in
+     * {@link ACameraDevice_createCaptureSession}</p>
+     *
+     */
+    ACameraCaptureSession_captureCallback_bufferLost    onCaptureBufferLost;
+} ACameraCaptureSession_captureCallbacks;
+
+enum {
+    CAPTURE_SEQUENCE_ID_NONE = -1
+};
+
+/**
+ * Close this capture session.
+ *
+ * <p>Closing a session frees up the target output Surfaces of the session for reuse with either
+ * a new session, or to other APIs that can draw to Surfaces.</p>
+ *
+ * <p>Note that creating a new capture session with {@link ACameraDevice_createCaptureSession}
+ * will close any existing capture session automatically, and call the older session listener's
+ * {@link ACameraCaptureSession_stateCallbacks#onClosed} callback. Using
+ * {@link ACameraDevice_createCaptureSession} directly without closing is the recommended approach
+ * for quickly switching to a new session, since unchanged target outputs can be reused more
+ * efficiently.</p>
+ *
+ * <p>After a session is closed and before {@link ACameraCaptureSession_stateCallbacks#onClosed}
+ * is called, all methods invoked on the session will return {@link ACAMERA_ERROR_SESSION_CLOSED},
+ * and any repeating requests are stopped (as if {@link ACameraCaptureSession_stopRepeating} was
+ * called). However, any in-progress capture requests submitted to the session will be completed as
+ * normal; once all captures have completed and the session has been torn down,
+ * {@link ACameraCaptureSession_stateCallbacks#onClosed} callback will be called and the seesion
+ * will be removed from memory.</p>
+ *
+ * <p>Closing a session is idempotent; closing more than once has no effect.</p>
+ *
+ * @param session the capture session of interest
+ */
+void ACameraCaptureSession_close(ACameraCaptureSession* session);
+
+struct ACameraDevice;
+typedef struct ACameraDevice ACameraDevice;
+
+/**
+ * Get the ACameraDevice pointer associated with this capture session in the device argument
+ * if the method succeeds.
+ *
+ * @param session the capture session of interest
+ * @param device the {@link ACameraDevice} associated with session. Will be set to NULL
+ *        if the session is closed or this method fails.
+ * @return <ul><li>
+ *             {@link ACAMERA_OK} if the method call succeeds. The {@link ACameraDevice}
+ *                                will be stored in device argument</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if session or device is NULL</li>
+ *         <li>{@link ACAMERA_ERROR_SESSION_CLOSED} if the capture session has been closed</li>
+ *         <li>{@link ACAMERA_ERROR_UNKNOWN} if the method fails for some other reasons</li></ul>
+ *
+ */
+camera_status_t ACameraCaptureSession_getDevice(
+        ACameraCaptureSession* session, /*out*/ACameraDevice** device);
+
+/**
+ * Submit an array of requests to be captured in sequence as a burst in the minimum of time possible.
+ *
+ * <p>The burst will be captured in the minimum amount of time possible, and will not be
+ * interleaved with requests submitted by other capture or repeat calls.</p>
+ *
+ * <p>Each capture produces one {@link ACameraMetadata} as a capture result and image buffers for
+ * one or more target {@link ANativeWindow}s. The target ANativeWindows (set with
+ * {@link ACaptureRequest_addTarget}) must be a subset of the ANativeWindow provided when
+ * this capture session was created.</p>
+ *
+ * @param session the capture session of interest
+ * @param callbacks the {@link ACameraCaptureSession_captureCallbacks} to be associated this capture
+ *        sequence. No capture callback will be fired if this is set to NULL.
+ * @param numRequests number of requests in requests argument. Must be at least 1.
+ * @param requests an array of {@link ACaptureRequest} to be captured. Length must be at least
+ *        numRequests.
+ * @param captureSequenceId the capture sequence ID associated with this capture method invocation
+ *        will be stored here if this argument is not NULL and the method call succeeds.
+ *        When this argument is set to NULL, the capture sequence ID will not be returned.
+ *
+ * @return <ul><li>
+ *             {@link ACAMERA_OK} if the method succeeds. captureSequenceId will be filled
+ *             if it is not NULL.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if session or requests is NULL, or
+ *             if numRequests < 1</li>
+ *         <li>{@link ACAMERA_ERROR_SESSION_CLOSED} if the capture session has been closed</li>
+ *         <li>{@link ACAMERA_ERROR_CAMERA_DISCONNECTED} if the camera device is closed</li>
+ *         <li>{@link ACAMERA_ERROR_CAMERA_DEVICE} if the camera device encounters fatal error</li>
+ *         <li>{@link ACAMERA_ERROR_CAMERA_SERVICE} if the camera service encounters fatal error</li>
+ *         <li>{@link ACAMERA_ERROR_UNKNOWN} if the method fails for some other reasons</li></ul>
+ */
+camera_status_t ACameraCaptureSession_capture(
+        ACameraCaptureSession* session,
+        /*optional*/ACameraCaptureSession_captureCallbacks* callbacks,
+        int numRequests, ACaptureRequest** requests,
+        /*optional*/int* captureSequenceId);
+
+/**
+ * Request endlessly repeating capture of a sequence of images by this capture session.
+ *
+ * <p>With this method, the camera device will continually capture images,
+ * cycling through the settings in the provided list of
+ * {@link ACaptureRequest}, at the maximum rate possible.</p>
+ *
+ * <p>If a request is submitted through {@link ACameraCaptureSession_capture},
+ * the current repetition of the request list will be
+ * completed before the higher-priority request is handled. This guarantees
+ * that the application always receives a complete repeat burst captured in
+ * minimal time, instead of bursts interleaved with higher-priority
+ * captures, or incomplete captures.</p>
+ *
+ * <p>Repeating burst requests are a simple way for an application to
+ * maintain a preview or other continuous stream of frames where each
+ * request is different in a predicatable way, without having to continually
+ * submit requests through {@link ACameraCaptureSession_capture}.</p>
+ *
+ * <p>To stop the repeating capture, call {@link ACameraCaptureSession_stopRepeating}. Any
+ * ongoing burst will still be completed, however. Calling
+ * {@link ACameraCaptureSession_abortCaptures} will also clear the request.</p>
+ *
+ * <p>Calling this method will replace a previously-set repeating requests
+ * set up by this method, although any in-progress burst will be completed before the new repeat
+ * burst will be used.</p>
+ *
+ * @param session the capture session of interest
+ * @param callbacks the {@link ACameraCaptureSession_captureCallbacks} to be associated with this
+ *        capture sequence. No capture callback will be fired if callbacks is set to NULL.
+ * @param numRequests number of requests in requests array. Must be at least 1.
+ * @param requests an array of {@link ACaptureRequest} to be captured. Length must be at least
+ *        numRequests.
+ * @param captureSequenceId the capture sequence ID associated with this capture method invocation
+ *        will be stored here if this argument is not NULL and the method call succeeds.
+ *        When this argument is set to NULL, the capture sequence ID will not be returned.
+ *
+ * @return <ul><li>
+ *             {@link ACAMERA_OK} if the method succeeds. captureSequenceId will be filled
+ *             if it is not NULL.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if session or requests is NULL, or
+ *             if numRequests < 1</li>
+ *         <li>{@link ACAMERA_ERROR_SESSION_CLOSED} if the capture session has been closed</li>
+ *         <li>{@link ACAMERA_ERROR_CAMERA_DISCONNECTED} if the camera device is closed</li>
+ *         <li>{@link ACAMERA_ERROR_CAMERA_DEVICE} if the camera device encounters fatal error</li>
+ *         <li>{@link ACAMERA_ERROR_CAMERA_SERVICE} if the camera service encounters fatal error</li>
+ *         <li>{@link ACAMERA_ERROR_UNKNOWN} if the method fails for  some other reasons</li></ul>
+ */
+camera_status_t ACameraCaptureSession_setRepeatingRequest(
+        ACameraCaptureSession* session,
+        /*optional*/ACameraCaptureSession_captureCallbacks* callbacks,
+        int numRequests, ACaptureRequest** requests,
+        /*optional*/int* captureSequenceId);
+
+/**
+ * Cancel any ongoing repeating capture set by {@link ACameraCaptureSession_setRepeatingRequest}.
+ * Has no effect on requests submitted through {@link ACameraCaptureSession_capture}.
+ *
+ * <p>Any currently in-flight captures will still complete, as will any burst that is
+ * mid-capture. To ensure that the device has finished processing all of its capture requests
+ * and is in ready state, wait for the {@link ACameraCaptureSession_stateCallbacks#onReady} callback
+ * after calling this method.</p>
+ *
+ * @param session the capture session of interest
+ *
+ * @return <ul><li>
+ *             {@link ACAMERA_OK} if the method succeeds. captureSequenceId will be filled
+ *             if it is not NULL.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if session is NULL.</li>
+ *         <li>{@link ACAMERA_ERROR_SESSION_CLOSED} if the capture session has been closed</li>
+ *         <li>{@link ACAMERA_ERROR_CAMERA_DISCONNECTED} if the camera device is closed</li>
+ *         <li>{@link ACAMERA_ERROR_CAMERA_DEVICE} if the camera device encounters fatal error</li>
+ *         <li>{@link ACAMERA_ERROR_CAMERA_SERVICE} if the camera service encounters fatal error</li>
+ *         <li>{@link ACAMERA_ERROR_UNKNOWN} if the method fails for some other reasons</li></ul>
+ */
+camera_status_t ACameraCaptureSession_stopRepeating(ACameraCaptureSession* session);
+
+/**
+ * Discard all captures currently pending and in-progress as fast as possible.
+ *
+ * <p>The camera device will discard all of its current work as fast as possible. Some in-flight
+ * captures may complete successfully and call
+ * {@link ACameraCaptureSession_captureCallbacks#onCaptureCompleted},
+ * while others will trigger their {@link ACameraCaptureSession_captureCallbacks#onCaptureFailed}
+ * callbacks. If a repeating request list is set, it will be cleared.</p>
+ *
+ * <p>This method is the fastest way to switch the camera device to a new session with
+ * {@link ACameraDevice_createCaptureSession}, at the cost of discarding in-progress
+ * work. It must be called before the new session is created. Once all pending requests are
+ * either completed or thrown away, the {@link ACameraCaptureSession_stateCallbacks#onReady}
+ * callback will be called, if the session has not been closed. Otherwise, the
+ * {@link ACameraCaptureSession_stateCallbacks#onClosed}
+ * callback will be fired when a new session is created by the camera device and the previous
+ * session is being removed from memory.</p>
+ *
+ * <p>Cancelling will introduce at least a brief pause in the stream of data from the camera
+ * device, since once the camera device is emptied, the first new request has to make it through
+ * the entire camera pipeline before new output buffers are produced.</p>
+ *
+ * <p>This means that using ACameraCaptureSession_abortCaptures to simply remove pending requests is
+ * not recommended; it's best used for quickly switching output configurations, or for cancelling
+ * long in-progress requests (such as a multi-second capture).</p>
+ *
+ * @param session the capture session of interest
+ *
+ * @return <ul><li>
+ *             {@link ACAMERA_OK} if the method succeeds. captureSequenceId will be filled
+ *             if it is not NULL.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if session is NULL.</li>
+ *         <li>{@link ACAMERA_ERROR_SESSION_CLOSED} if the capture session has been closed</li>
+ *         <li>{@link ACAMERA_ERROR_CAMERA_DISCONNECTED} if the camera device is closed</li>
+ *         <li>{@link ACAMERA_ERROR_CAMERA_DEVICE} if the camera device encounters fatal error</li>
+ *         <li>{@link ACAMERA_ERROR_CAMERA_SERVICE} if the camera service encounters fatal error</li>
+ *         <li>{@link ACAMERA_ERROR_UNKNOWN} if the method fails for some other reasons</li></ul>
+ */
+camera_status_t ACameraCaptureSession_abortCaptures(ACameraCaptureSession* session);
+
+#endif /* __ANDROID_API__ >= 24 */
+
+__END_DECLS
+
+#endif /* _NDK_CAMERA_CAPTURE_SESSION_H */
+
+/** @} */
diff --git a/camera/include/camera/ndk/NdkCameraDevice.h b/camera/include/camera/ndk/NdkCameraDevice.h
new file mode 100644
index 0000000..9b7f6f4
--- /dev/null
+++ b/camera/include/camera/ndk/NdkCameraDevice.h
@@ -0,0 +1,669 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @addtogroup Camera
+ * @{
+ */
+
+/**
+ * @file NdkCameraDevice.h
+ */
+
+/*
+ * This file defines an NDK API.
+ * Do not remove methods.
+ * Do not change method signatures.
+ * Do not change the value of constants.
+ * Do not change the size of any of the classes defined in here.
+ * Do not reference types that are not part of the NDK.
+ * Do not #include files that aren't part of the NDK.
+ */
+#include <sys/cdefs.h>
+
+#include <android/native_window.h>
+#include "NdkCameraError.h"
+#include "NdkCaptureRequest.h"
+#include "NdkCameraCaptureSession.h"
+
+#ifndef _NDK_CAMERA_DEVICE_H
+#define _NDK_CAMERA_DEVICE_H
+
+__BEGIN_DECLS
+
+#if __ANDROID_API__ >= 24
+
+/**
+ * ACameraDevice is opaque type that provides access to a camera device.
+ *
+ * A pointer can be obtained using {@link ACameraManager_openCamera} method.
+ */
+typedef struct ACameraDevice ACameraDevice;
+
+/// Enum for ACameraDevice_ErrorStateCallback error code
+enum {
+    /**
+     * The camera device is in use already.
+     */
+    ERROR_CAMERA_IN_USE = 1,
+
+    /**
+     * The system-wide limit for number of open cameras or camera resources has
+     * been reached, and more camera devices cannot be opened until previous
+     * instances are closed.
+     */
+    ERROR_MAX_CAMERAS_IN_USE = 2,
+
+    /**
+     * The camera is disabled due to a device policy, and cannot be opened.
+     */
+    ERROR_CAMERA_DISABLED = 3,
+
+    /**
+     * The camera device has encountered a fatal error.
+     * <p>The camera device needs to be re-opened to be used again.</p>
+     */
+    ERROR_CAMERA_DEVICE = 4,
+
+    /**
+     * The camera service has encountered a fatal error.
+     * <p>The Android device may need to be shut down and restarted to restore
+     * camera function, or there may be a persistent hardware problem.
+     * An attempt at recovery may be possible by closing the
+     * CameraDevice and the CameraManager, and trying to acquire all resources
+     * again from scratch.</p>
+     */
+    ERROR_CAMERA_SERVICE = 5
+};
+
+/**
+ * Camera device state callbacks to be used in {@link ACameraDevice_stateCallbacks}.
+ *
+ * @param context The optional context in {@link ACameraDevice_stateCallbacks} will be
+ *                passed to this callback.
+ * @param device The {@link ACameraDevice} that is being disconnected.
+ */
+typedef void (*ACameraDevice_StateCallback)(void* context, ACameraDevice* device);
+
+/**
+ * Camera device error state callbacks to be used in {@link ACameraDevice_stateCallbacks}.
+ *
+ * @param context The optional context in {@link ACameraDevice_stateCallbacks} will be
+ *                passed to this callback.
+ * @param device The {@link ACameraDevice} that is being disconnected.
+ * @param error The error code describes the cause of this error callback. See the folowing
+ *              links for more detail.
+ *
+ * @see ERROR_CAMERA_IN_USE
+ * @see ERROR_MAX_CAMERAS_IN_USE
+ * @see ERROR_CAMERA_DISABLED
+ * @see ERROR_CAMERA_DEVICE
+ * @see ERROR_CAMERA_SERVICE
+ */
+typedef void (*ACameraDevice_ErrorStateCallback)(void* context, ACameraDevice* device, int error);
+
+typedef struct ACameraDevice_StateCallbacks {
+    /// optional application context.
+    void*                             context;
+
+    /**
+     * The function is  called when a camera device is no longer available for use.
+     *
+     * <p>Any attempt to call API methods on this ACameraDevice will return
+     * {@link ACAMERA_ERROR_CAMERA_DISCONNECTED}. The disconnection could be due to a
+     * change in security policy or permissions; the physical disconnection
+     * of a removable camera device; or the camera being needed for a
+     * higher-priority camera API client.</p>
+     *
+     * <p>Application should clean up the camera with {@link ACameraDevice_close} after
+     * this happens, as it is not recoverable until the camera can be opened
+     * again.</p>
+     *
+     */
+    ACameraDevice_StateCallback       onDisconnected;
+
+    /**
+     * The function called when a camera device has encountered a serious error.
+     *
+     * <p>This indicates a failure of the camera device or camera service in some way.
+     * Any attempt to call API methods on this ACameraDevice in the future will return
+     * {@link ACAMERA_ERROR_CAMERA_DISCONNECTED}.</p>
+     *
+     * <p>There may still be capture completion or camera stream callbacks that will be called
+     * after this error is received.</p>
+     *
+     * <p>Application should clean up the camera with {@link ACameraDevice_close} after this
+     * happens. Further attempts at recovery are error-code specific.</p>
+     *
+     */
+    ACameraDevice_ErrorStateCallback  onError;
+} ACameraDevice_stateCallbacks;
+
+/**
+ * Close the connection and free this ACameraDevice synchronously. Access to the ACameraDevice
+ * after calling this method will cause a crash.
+ *
+ * <p>After this call, all calls to the active ACameraCaptureSession associated to this
+ * ACameraDevice will return {@link ACAMERA_ERROR_SESSION_CLOSED} except for calls to
+ * {@link ACameraCaptureSession_close}.</p>
+ *
+ * <p>This method will stop all repeating captures sent via
+ * {@link ACameraCaptureSession_setRepeatingRequest} and block until all capture requests sent via
+ * {@link ACameraCaptureSession_capture} is complete. Once the method returns, the camera device
+ * will be removed from memory and access to the closed camera device pointer will cause a crash.</p>
+ *
+ * @param device the camera device to be closed
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if device is NULL.</li></ul>
+ */
+camera_status_t ACameraDevice_close(ACameraDevice* device);
+
+/**
+ * Return the camera id associated with this camera device.
+ *
+ * @param device the camera device to be closed
+ *
+ * @return camera ID string. The returned string is managed by framework and should not be
+ * delete/free by the application. Also the returned string must not be used after the device
+ * has been closed.
+ */
+const char* ACameraDevice_getId(const ACameraDevice* device);
+
+typedef enum {
+    /**
+     * Create a request suitable for a camera preview window. Specifically, this
+     * means that high frame rate is given priority over the highest-quality
+     * post-processing. These requests would normally be used with the
+     * {@link ACameraCaptureSession_setRepeatingRequest} method.
+     * This template is guaranteed to be supported on all camera devices.
+     *
+     * @see ACameraDevice_createCaptureRequest
+     */
+    TEMPLATE_PREVIEW = 1,
+
+    /**
+     * Create a request suitable for still image capture. Specifically, this
+     * means prioritizing image quality over frame rate. These requests would
+     * commonly be used with the {@link ACameraCaptureSession_capture} method.
+     * This template is guaranteed to be supported on all camera devices.
+     *
+     * @see ACameraDevice_createCaptureRequest
+     */
+    TEMPLATE_STILL_CAPTURE = 2,
+
+    /**
+     * Create a request suitable for video recording. Specifically, this means
+     * that a stable frame rate is used, and post-processing is set for
+     * recording quality. These requests would commonly be used with the
+     * {@link ACameraCaptureSession_setRepeatingRequest} method.
+     * This template is guaranteed to be supported on all camera devices.
+     *
+     * @see ACameraDevice_createCaptureRequest
+     */
+    TEMPLATE_RECORD = 3,
+
+    /**
+     * Create a request suitable for still image capture while recording
+     * video. Specifically, this means maximizing image quality without
+     * disrupting the ongoing recording. These requests would commonly be used
+     * with the {@link ACameraCaptureSession_capture} method while a request based on
+     * {@link TEMPLATE_RECORD} is is in use with {@link ACameraCaptureSession_setRepeatingRequest}.
+     * This template is guaranteed to be supported on all camera devices.
+     *
+     * @see ACameraDevice_createCaptureRequest
+     */
+    TEMPLATE_VIDEO_SNAPSHOT = 4,
+
+    /**
+     * Create a request suitable for zero shutter lag still capture. This means
+     * means maximizing image quality without compromising preview frame rate.
+     * AE/AWB/AF should be on auto mode.
+     *
+     * @see ACameraDevice_createCaptureRequest
+     */
+    TEMPLATE_ZERO_SHUTTER_LAG = 5,
+
+    /**
+     * A basic template for direct application control of capture
+     * parameters. All automatic control is disabled (auto-exposure, auto-white
+     * balance, auto-focus), and post-processing parameters are set to preview
+     * quality. The manual capture parameters (exposure, sensitivity, and so on)
+     * are set to reasonable defaults, but should be overriden by the
+     * application depending on the intended use case.
+     * This template is guaranteed to be supported on camera devices that support the
+     * {@link ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_MANUAL_SENSOR} capability.
+     *
+     * @see ACameraDevice_createCaptureRequest
+     */
+    TEMPLATE_MANUAL = 6,
+} ACameraDevice_request_template;
+
+/**
+ * Create a ACaptureRequest for capturing images, initialized with template
+ * for a target use case.
+ *
+ * <p>The settings are chosen to be the best options for this camera device,
+ * so it is not recommended to reuse the same request for a different camera device.</p>
+ *
+ * @param device the camera device of interest
+ * @param templateId the type of capture request to be created.
+ *        See {@link ACameraDevice_request_template}.
+ * @param request the output request will be stored here if the method call succeeds.
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds. The created capture request will be
+ *                                filled in request argument.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if device or request is NULL, templateId
+ *                                is undefined or camera device does not support requested template.
+ *                                </li>
+ *         <li>{@link ACAMERA_ERROR_CAMERA_DISCONNECTED} if the camera device is closed.</li>
+ *         <li>{@link ACAMERA_ERROR_CAMERA_DEVICE} if the camera device encounters fatal error.</li>
+ *         <li>{@link ACAMERA_ERROR_CAMERA_SERVICE} if the camera service encounters fatal error.</li>
+ *         <li>{@link ACAMERA_ERROR_UNKNOWN} if the method fails for some other reasons.</li></ul>
+ *
+ * @see TEMPLATE_PREVIEW
+ * @see TEMPLATE_RECORD
+ * @see TEMPLATE_STILL_CAPTURE
+ * @see TEMPLATE_VIDEO_SNAPSHOT
+ * @see TEMPLATE_MANUAL
+ */
+camera_status_t ACameraDevice_createCaptureRequest(
+        const ACameraDevice* device, ACameraDevice_request_template templateId,
+        /*out*/ACaptureRequest** request);
+
+
+typedef struct ACaptureSessionOutputContainer ACaptureSessionOutputContainer;
+
+typedef struct ACaptureSessionOutput ACaptureSessionOutput;
+
+/**
+ * Create a capture session output container.
+ *
+ * <p>The container is used in {@link ACameraDevice_createCaptureSession} method to create a capture
+ * session. Use {@link ACaptureSessionOutputContainer_free} to free the container and its memory
+ * after application no longer needs the ACaptureSessionOutputContainer.</p>
+ *
+ * @param container the output {@link ACaptureSessionOutputContainer} will be stored here if the
+ *                  method call succeeds.
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds. The created container will be
+ *                                filled in container argument.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if container is NULL.</li></ul>
+ */
+camera_status_t ACaptureSessionOutputContainer_create(
+        /*out*/ACaptureSessionOutputContainer** container);
+
+/**
+ * Free a capture session output container.
+ *
+ * @param container the {@link ACaptureSessionOutputContainer} to be freed.
+ *
+ * @see ACaptureSessionOutputContainer_create
+ */
+void            ACaptureSessionOutputContainer_free(ACaptureSessionOutputContainer* container);
+
+/**
+ * Create a ACaptureSessionOutput object.
+ *
+ * <p>The ACaptureSessionOutput is used in {@link ACaptureSessionOutputContainer_add} method to add
+ * an output {@link ANativeWindow} to ACaptureSessionOutputContainer. Use
+ * {@link ACaptureSessionOutput_free} to free the object and its memory after application no longer
+ * needs the {@link ACaptureSessionOutput}.</p>
+ *
+ * @param anw the {@link ANativeWindow} to be associated with the {@link ACaptureSessionOutput}
+ * @param output the output {@link ACaptureSessionOutput} will be stored here if the
+ *                  method call succeeds.
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds. The created container will be
+ *                                filled in the output argument.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if anw or output is NULL.</li></ul>
+ *
+ * @see ACaptureSessionOutputContainer_add
+ */
+camera_status_t ACaptureSessionOutput_create(
+        ANativeWindow* anw, /*out*/ACaptureSessionOutput** output);
+
+/**
+ * Free a ACaptureSessionOutput object.
+ *
+ * @param output the {@link ACaptureSessionOutput} to be freed.
+ *
+ * @see ACaptureSessionOutput_create
+ */
+void            ACaptureSessionOutput_free(ACaptureSessionOutput* output);
+
+/**
+ * Add an {@link ACaptureSessionOutput} object to {@link ACaptureSessionOutputContainer}.
+ *
+ * @param container the {@link ACaptureSessionOutputContainer} of interest.
+ * @param output the output {@link ACaptureSessionOutput} to be added to container.
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if container or output is NULL.</li></ul>
+ */
+camera_status_t ACaptureSessionOutputContainer_add(
+        ACaptureSessionOutputContainer* container, const ACaptureSessionOutput* output);
+
+/**
+ * Remove an {@link ACaptureSessionOutput} object from {@link ACaptureSessionOutputContainer}.
+ *
+ * <p>This method has no effect if the ACaptureSessionOutput does not exist in
+ * ACaptureSessionOutputContainer.</p>
+ *
+ * @param container the {@link ACaptureSessionOutputContainer} of interest.
+ * @param output the output {@link ACaptureSessionOutput} to be removed from container.
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if container or output is NULL.</li></ul>
+ */
+camera_status_t ACaptureSessionOutputContainer_remove(
+        ACaptureSessionOutputContainer* container, const ACaptureSessionOutput* output);
+
+/**
+ * Create a new camera capture session by providing the target output set of {@link ANativeWindow}
+ * to the camera device.
+ *
+ * <p>If there is a preexisting session, the previous session will be closed
+ * automatically. However, app still needs to call {@link ACameraCaptureSession_close} on previous
+ * session. Otherwise the resources held by previous session will NOT be freed.</p>
+ *
+ * <p>The active capture session determines the set of potential output {@link ANativeWindow}s for
+ * the camera device for each capture request. A given request may use all
+ * or only some of the outputs. Once the ACameraCaptureSession is created, requests can be
+ * submitted with {@link ACameraCaptureSession_capture} or
+ * {@link ACameraCaptureSession_setRepeatingRequest}.</p>
+ *
+ * <p>Often the {@link ANativeWindow} used with this method can be obtained from a <a href=
+ * "http://developer.android.com/reference/android/view/Surface.html">Surface</a> java object by
+ * {@link ANativeWindow_fromSurface} NDK method. Surfaces or ANativeWindow suitable for inclusion as a camera
+ * output can be created for various use cases and targets:</p>
+ *
+ * <ul>
+ *
+ * <li>For drawing to a
+ *   <a href="http://developer.android.com/reference/android/view/SurfaceView.html">SurfaceView</a>:
+ *   Once the SurfaceView's Surface is created, set the size
+ *   of the Surface with
+ *   <a href="http://developer.android.com/reference/android/view/SurfaceHolder.html#setFixedSize(int, int)">
+ *    android.view.SurfaceHolder\#setFixedSize</a> to be one of the PRIVATE output sizes
+ *   returned by {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS}
+ *   and then obtain the Surface by calling <a href=
+ *   "http://developer.android.com/reference/android/view/SurfaceHolder.html#getSurface()">
+ *   android.view.SurfaceHolder\#getSurface</a>. If the size is not set by the application, it will
+ *   be rounded to the nearest supported size less than 1080p, by the camera device.</li>
+ *
+ * <li>For accessing through an OpenGL texture via a <a href=
+ *   "http://developer.android.com/reference/android/graphics/SurfaceTexture.html">SurfaceTexture</a>:
+ *   Set the size of the SurfaceTexture with <a href=
+ *   "http://developer.android.com/reference/android/graphics/SurfaceTexture.html#setDefaultBufferSize(int, int)">
+ *   setDefaultBufferSize</a> to be one of the PRIVATE output sizes
+ *   returned by {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS}
+ *   before creating a Surface from the SurfaceTexture with <a href=
+ *   "http://developer.android.com/reference/android/view/Surface.html#Surface(android.graphics.SurfaceTexture)">
+ *   Surface\#Surface(SurfaceTextrue)</a>. If the size is not set by the application, it will be set to be the
+ *   smallest supported size less than 1080p, by the camera device.</li>
+ *
+ * <li>For recording with <a href=
+ *     "http://developer.android.com/reference/android/media/MediaCodec.html">
+ *     MediaCodec</a>: Call
+ *   <a href=
+ *     "http://developer.android.com/reference/android/media/MediaCodec.html#createInputSurface()">
+ *     android.media.MediaCodec\#createInputSurface</a> after configuring
+ *   the media codec to use one of the PRIVATE output sizes
+ *   returned by {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS}.
+ *   </li>
+ *
+ * <li>For recording with <a href=
+ *    "http://developer.android.com/reference/android/media/MediaRecorder.html">
+ *    MediaRecorder</a>: Call
+ *   <a href="http://developer.android.com/reference/android/media/MediaRecorder.html#getSurface()">
+ *    android.media.MediaRecorder\#getSurface</a> after configuring the media recorder to use
+ *   one of the PRIVATE output sizes returned by
+ *   {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS}, or configuring it to use one of the supported
+ *   <a href="http://developer.android.com/reference/android/media/CamcorderProfile.html">
+ *    CamcorderProfiles</a>.</li>
+ *
+ * <li>For efficient YUV processing with <a href=
+ *   "http://developer.android.com/reference/android/renderscript/package-summary.html">
+ *   RenderScript</a>:
+ *   Create a RenderScript
+ *   <a href="http://developer.android.com/reference/android/renderscript/Allocation.html">
+ *   Allocation</a> with a supported YUV
+ *   type, the IO_INPUT flag, and one of the YUV output sizes returned by
+ *   {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS},
+ *   Then obtain the Surface with
+ *   <a href="http://developer.android.com/reference/android/renderscript/Allocation.html#getSurface()">
+ *   Allocation#getSurface}</a>.</li>
+ *
+ * <li>For access to RAW, uncompressed YUV, or compressed JPEG data in the application: Create an
+ *   {@link AImageReader} object using the {@link AImageReader_new} method with one of the supported
+ *   output formats given by {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS}. Then obtain a
+ *   ANativeWindow from it with {@link AImageReader_getWindow}.
+ *   If the AImageReader size is not set to a supported size, it will be rounded to a supported
+ *   size less than 1080p by the camera device.
+ *   </li>
+ *
+ * </ul>
+ *
+ * <p>The camera device will query each ANativeWindow's size and formats upon this
+ * call, so they must be set to a valid setting at this time.</p>
+ *
+ * <p>It can take several hundred milliseconds for the session's configuration to complete,
+ * since camera hardware may need to be powered on or reconfigured.</p>
+ *
+ * <p>If a prior ACameraCaptureSession already exists when this method is called, the previous
+ * session will no longer be able to accept new capture requests and will be closed. Any
+ * in-progress capture requests made on the prior session will be completed before it's closed.
+ * To minimize the transition time,
+ * the ACameraCaptureSession_abortCaptures method can be used to discard the remaining
+ * requests for the prior capture session before a new one is created. Note that once the new
+ * session is created, the old one can no longer have its captures aborted.</p>
+ *
+ * <p>Using larger resolution outputs, or more outputs, can result in slower
+ * output rate from the device.</p>
+ *
+ * <p>Configuring a session with an empty list will close the current session, if
+ * any. This can be used to release the current session's target surfaces for another use.</p>
+ *
+ * <p>While any of the sizes from {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS} can be used when
+ * a single output stream is configured, a given camera device may not be able to support all
+ * combination of sizes, formats, and targets when multiple outputs are configured at once.  The
+ * tables below list the maximum guaranteed resolutions for combinations of streams and targets,
+ * given the capabilities of the camera device.</p>
+ *
+ * <p>If an application tries to create a session using a set of targets that exceed the limits
+ * described in the below tables, one of three possibilities may occur. First, the session may
+ * be successfully created and work normally. Second, the session may be successfully created,
+ * but the camera device won't meet the frame rate guarantees as described in
+ * {@link ACAMERA_SCALER_AVAILABLE_MIN_FRAME_DURATIONS}. Or third, if the output set
+ * cannot be used at all, session creation will fail entirely, with
+ * {@link ACAMERA_ERROR_STREAM_CONFIGURE_FAIL} being returned.</p>
+ *
+ * <p>For the type column `PRIV` refers to output format {@link AIMAGE_FORMAT_PRIVATE},
+ * `YUV` refers to output format {@link AIMAGE_FORMAT_YUV_420_888},
+ * `JPEG` refers to output format {@link AIMAGE_FORMAT_JPEG},
+ * and `RAW` refers to output format {@link AIMAGE_FORMAT_RAW16}
+ *
+ *
+ * <p>For the maximum size column, `PREVIEW` refers to the best size match to the
+ * device's screen resolution, or to 1080p `(1920x1080)`, whichever is
+ * smaller. `RECORD` refers to the camera device's maximum supported recording resolution,
+ * as determined by <a href="http://developer.android.com/reference/android/media/CamcorderProfile.html">
+ * android.media.CamcorderProfiles</a>. And `MAXIMUM` refers to the
+ * camera device's maximum output resolution for that format or target from
+ * {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS}.</p>
+ *
+ * <p>To use these tables, determine the number and the formats/targets of outputs needed, and
+ * find the row(s) of the table with those targets. The sizes indicate the maximum set of sizes
+ * that can be used; it is guaranteed that for those targets, the listed sizes and anything
+ * smaller from the list given by {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS} can be
+ * successfully used to create a session.  For example, if a row indicates that a 8 megapixel
+ * (MP) YUV_420_888 output can be used together with a 2 MP `PRIV` output, then a session
+ * can be created with targets `[8 MP YUV, 2 MP PRIV]` or targets `[2 MP YUV, 2 MP PRIV]`;
+ * but a session with targets `[8 MP YUV, 4 MP PRIV]`, targets `[4 MP YUV, 4 MP PRIV]`,
+ * or targets `[8 MP PRIV, 2 MP YUV]` would not be guaranteed to work, unless
+ * some other row of the table lists such a combination.</p>
+ *
+ * <p>Legacy devices ({@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL}
+ * `== `{@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY LEGACY}) support at
+ * least the following stream combinations:
+ *
+ * <table>
+ * <tr><th colspan="7">LEGACY-level guaranteed configurations</th></tr>
+ * <tr> <th colspan="2" id="rb">Target 1</th> <th colspan="2" id="rb">Target 2</th>  <th colspan="2" id="rb">Target 3</th> <th rowspan="2">Sample use case(s)</th> </tr>
+ * <tr> <th>Type</th><th id="rb">Max size</th> <th>Type</th><th id="rb">Max size</th> <th>Type</th><th id="rb">Max size</th></tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`MAXIMUM`</td> <td colspan="2" id="rb"></td> <td colspan="2" id="rb"></td> <td>Simple preview, GPU video processing, or no-preview video recording.</td> </tr>
+ * <tr> <td>`JPEG`</td><td id="rb">`MAXIMUM`</td> <td colspan="2" id="rb"></td> <td colspan="2" id="rb"></td> <td>No-viewfinder still image capture.</td> </tr>
+ * <tr> <td>`YUV `</td><td id="rb">`MAXIMUM`</td> <td colspan="2" id="rb"></td> <td colspan="2" id="rb"></td> <td>In-application video/image processing.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`JPEG`</td><td id="rb">`MAXIMUM`</td> <td colspan="2" id="rb"></td> <td>Standard still imaging.</td> </tr>
+ * <tr> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`JPEG`</td><td id="rb">`MAXIMUM`</td> <td colspan="2" id="rb"></td> <td>In-app processing plus still capture.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td colspan="2" id="rb"></td> <td>Standard recording.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td colspan="2" id="rb"></td> <td>Preview plus in-app processing.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`JPEG`</td><td id="rb">`MAXIMUM`</td> <td>Still capture plus in-app processing.</td> </tr>
+ * </table><br>
+ * </p>
+ *
+ * <p>Limited-level ({@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL}
+ * `== `{@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED LIMITED}) devices
+ * support at least the following stream combinations in addition to those for
+ * {@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY LEGACY} devices:
+ *
+ * <table>
+ * <tr><th colspan="7">LIMITED-level additional guaranteed configurations</th></tr>
+ * <tr><th colspan="2" id="rb">Target 1</th><th colspan="2" id="rb">Target 2</th><th colspan="2" id="rb">Target 3</th> <th rowspan="2">Sample use case(s)</th> </tr>
+ * <tr><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th></tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`PRIV`</td><td id="rb">`RECORD `</td> <td colspan="2" id="rb"></td> <td>High-resolution video recording with preview.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`RECORD `</td> <td colspan="2" id="rb"></td> <td>High-resolution in-app video processing with preview.</td> </tr>
+ * <tr> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`RECORD `</td> <td colspan="2" id="rb"></td> <td>Two-input in-app video processing.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`PRIV`</td><td id="rb">`RECORD `</td> <td>`JPEG`</td><td id="rb">`RECORD `</td> <td>High-resolution recording with video snapshot.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`RECORD `</td> <td>`JPEG`</td><td id="rb">`RECORD `</td> <td>High-resolution in-app processing with video snapshot.</td> </tr>
+ * <tr> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`JPEG`</td><td id="rb">`MAXIMUM`</td> <td>Two-input in-app processing with still capture.</td> </tr>
+ * </table><br>
+ * </p>
+ *
+ * <p>FULL-level ({@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL}
+ * `== `{@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_FULL FULL}) devices
+ * support at least the following stream combinations in addition to those for
+ * {@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED LIMITED} devices:
+ *
+ * <table>
+ * <tr><th colspan="7">FULL-level additional guaranteed configurations</th></tr>
+ * <tr><th colspan="2" id="rb">Target 1</th><th colspan="2" id="rb">Target 2</th><th colspan="2" id="rb">Target 3</th> <th rowspan="2">Sample use case(s)</th> </tr>
+ * <tr><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`PRIV`</td><td id="rb">`MAXIMUM`</td> <td colspan="2" id="rb"></td> <td>Maximum-resolution GPU processing with preview.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`MAXIMUM`</td> <td colspan="2" id="rb"></td> <td>Maximum-resolution in-app processing with preview.</td> </tr>
+ * <tr> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`MAXIMUM`</td> <td colspan="2" id="rb"></td> <td>Maximum-resolution two-input in-app processsing.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`JPEG`</td><td id="rb">`MAXIMUM`</td> <td>Video recording with maximum-size video snapshot</td> </tr>
+ * <tr> <td>`YUV `</td><td id="rb">`640x480`</td> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`MAXIMUM`</td> <td>Standard video recording plus maximum-resolution in-app processing.</td> </tr>
+ * <tr> <td>`YUV `</td><td id="rb">`640x480`</td> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`MAXIMUM`</td> <td>Preview plus two-input maximum-resolution in-app processing.</td> </tr>
+ * </table><br>
+ * </p>
+ *
+ * <p>RAW-capability ({@link ACAMERA_REQUEST_AVAILABLE_CAPABILITIES} includes
+ * {@link ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_RAW RAW}) devices additionally support
+ * at least the following stream combinations on both
+ * {@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_FULL FULL} and
+ * {@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED LIMITED} devices:
+ *
+ * <table>
+ * <tr><th colspan="7">RAW-capability additional guaranteed configurations</th></tr>
+ * <tr><th colspan="2" id="rb">Target 1</th><th colspan="2" id="rb">Target 2</th><th colspan="2" id="rb">Target 3</th> <th rowspan="2">Sample use case(s)</th> </tr>
+ * <tr><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th> </tr>
+ * <tr> <td>`RAW `</td><td id="rb">`MAXIMUM`</td> <td colspan="2" id="rb"></td> <td colspan="2" id="rb"></td> <td>No-preview DNG capture.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`RAW `</td><td id="rb">`MAXIMUM`</td> <td colspan="2" id="rb"></td> <td>Standard DNG capture.</td> </tr>
+ * <tr> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`RAW `</td><td id="rb">`MAXIMUM`</td> <td colspan="2" id="rb"></td> <td>In-app processing plus DNG capture.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`RAW `</td><td id="rb">`MAXIMUM`</td> <td>Video recording with DNG capture.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`RAW `</td><td id="rb">`MAXIMUM`</td> <td>Preview with in-app processing and DNG capture.</td> </tr>
+ * <tr> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`RAW `</td><td id="rb">`MAXIMUM`</td> <td>Two-input in-app processing plus DNG capture.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`JPEG`</td><td id="rb">`MAXIMUM`</td> <td>`RAW `</td><td id="rb">`MAXIMUM`</td> <td>Still capture with simultaneous JPEG and DNG.</td> </tr>
+ * <tr> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`JPEG`</td><td id="rb">`MAXIMUM`</td> <td>`RAW `</td><td id="rb">`MAXIMUM`</td> <td>In-app processing with simultaneous JPEG and DNG.</td> </tr>
+ * </table><br>
+ * </p>
+ *
+ * <p>BURST-capability ({@link ACAMERA_REQUEST_AVAILABLE_CAPABILITIES} includes
+ * {@link ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_BURST_CAPTURE BURST_CAPTURE}) devices
+ * support at least the below stream combinations in addition to those for
+ * {@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED LIMITED} devices. Note that all
+ * FULL-level devices support the BURST capability, and the below list is a strict subset of the
+ * list for FULL-level devices, so this table is only relevant for LIMITED-level devices that
+ * support the BURST_CAPTURE capability.
+ *
+ * <table>
+ * <tr><th colspan="5">BURST-capability additional guaranteed configurations</th></tr>
+ * <tr><th colspan="2" id="rb">Target 1</th><th colspan="2" id="rb">Target 2</th><th rowspan="2">Sample use case(s)</th> </tr>
+ * <tr><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`PRIV`</td><td id="rb">`MAXIMUM`</td> <td>Maximum-resolution GPU processing with preview.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`MAXIMUM`</td> <td>Maximum-resolution in-app processing with preview.</td> </tr>
+ * <tr> <td>`YUV `</td><td id="rb">`PREVIEW`</td> <td>`YUV `</td><td id="rb">`MAXIMUM`</td> <td>Maximum-resolution two-input in-app processsing.</td> </tr>
+ * </table><br>
+ * </p>
+ *
+ * <p>LEVEL-3 ({@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL}
+ * `== `{@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_3 LEVEL_3})
+ * support at least the following stream combinations in addition to the combinations for
+ * {@link ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_FULL FULL} and for
+ * RAW capability ({@link ACAMERA_REQUEST_AVAILABLE_CAPABILITIES} includes
+ * {@link ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_RAW RAW}):
+ *
+ * <table>
+ * <tr><th colspan="11">LEVEL-3 additional guaranteed configurations</th></tr>
+ * <tr><th colspan="2" id="rb">Target 1</th><th colspan="2" id="rb">Target 2</th><th colspan="2" id="rb">Target 3</th><th colspan="2" id="rb">Target 4</th><th rowspan="2">Sample use case(s)</th> </tr>
+ * <tr><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th><th>Type</th><th id="rb">Max size</th> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`PRIV`</td><td id="rb">`640x480`</td> <td>`YUV`</td><td id="rb">`MAXIMUM`</td> <td>`RAW`</td><td id="rb">`MAXIMUM`</td> <td>In-app viewfinder analysis with dynamic selection of output format.</td> </tr>
+ * <tr> <td>`PRIV`</td><td id="rb">`PREVIEW`</td> <td>`PRIV`</td><td id="rb">`640x480`</td> <td>`JPEG`</td><td id="rb">`MAXIMUM`</td> <td>`RAW`</td><td id="rb">`MAXIMUM`</td> <td>In-app viewfinder analysis with dynamic selection of output format.</td> </tr>
+ * </table><br>
+ * </p>
+ *
+ * <p>Since the capabilities of camera devices vary greatly, a given camera device may support
+ * target combinations with sizes outside of these guarantees, but this can only be tested for
+ * by attempting to create a session with such targets.</p>
+ *
+ * @param device the camera device of interest.
+ * @param outputs the {@link ACaptureSessionOutputContainer} describes all output streams.
+ * @param callbacks the {@link ACameraCaptureSession_stateCallbacks capture session state callbacks}.
+ * @param session the created {@link ACameraCaptureSession} will be filled here if the method call
+ *        succeeds.
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds. The created capture session will be
+ *                                filled in session argument.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if any of device, outputs, callbacks or
+ *                                session is NULL.</li>
+ *         <li>{@link ACAMERA_ERROR_CAMERA_DISCONNECTED} if the camera device is closed.</li>
+ *         <li>{@link ACAMERA_ERROR_CAMERA_DEVICE} if the camera device encounters fatal error.</li>
+ *         <li>{@link ACAMERA_ERROR_CAMERA_SERVICE} if the camera service encounters fatal error.</li>
+ *         <li>{@link ACAMERA_ERROR_UNKNOWN} if the method fails for some other reasons.</li></ul>
+ */
+camera_status_t ACameraDevice_createCaptureSession(
+        ACameraDevice* device,
+        const ACaptureSessionOutputContainer*       outputs,
+        const ACameraCaptureSession_stateCallbacks* callbacks,
+        /*out*/ACameraCaptureSession** session);
+
+#endif /* __ANDROID_API__ >= 24 */
+
+__END_DECLS
+
+#endif /* _NDK_CAMERA_DEVICE_H */
+
+/** @} */
+
diff --git a/camera/include/camera/ndk/NdkCameraError.h b/camera/include/camera/ndk/NdkCameraError.h
new file mode 100644
index 0000000..6b58155
--- /dev/null
+++ b/camera/include/camera/ndk/NdkCameraError.h
@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @addtogroup Camera
+ * @{
+ */
+
+/**
+ * @file NdkCameraError.h
+ */
+
+/*
+ * This file defines an NDK API.
+ * Do not remove methods.
+ * Do not change method signatures.
+ * Do not change the value of constants.
+ * Do not change the size of any of the classes defined in here.
+ * Do not reference types that are not part of the NDK.
+ * Do not #include files that aren't part of the NDK.
+ */
+
+#ifndef _NDK_CAMERA_ERROR_H
+#define _NDK_CAMERA_ERROR_H
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+#if __ANDROID_API__ >= 24
+
+typedef enum {
+    ACAMERA_OK = 0,
+
+    ACAMERA_ERROR_BASE                  = -10000,
+
+    /**
+     * Camera operation has failed due to an unspecified cause.
+     */
+    ACAMERA_ERROR_UNKNOWN               = ACAMERA_ERROR_BASE,
+
+    /**
+     * Camera operation has failed due to an invalid parameter being passed to the method.
+     */
+    ACAMERA_ERROR_INVALID_PARAMETER     = ACAMERA_ERROR_BASE - 1,
+
+    /**
+     * Camera operation has failed because the camera device has been closed, possibly because a
+     * higher-priority client has taken ownership of the camera device.
+     */
+    ACAMERA_ERROR_CAMERA_DISCONNECTED   = ACAMERA_ERROR_BASE - 2,
+
+    /**
+     * Camera operation has failed due to insufficient memory.
+     */
+    ACAMERA_ERROR_NOT_ENOUGH_MEMORY     = ACAMERA_ERROR_BASE - 3,
+
+    /**
+     * Camera operation has failed due to the requested metadata tag cannot be found in input
+     * {@link ACameraMetadata} or {@link ACaptureRequest}.
+     */
+    ACAMERA_ERROR_METADATA_NOT_FOUND    = ACAMERA_ERROR_BASE - 4,
+
+    /**
+     * Camera operation has failed and the camera device has encountered a fatal error and needs to
+     * be re-opened before it can be used again.
+     */
+    ACAMERA_ERROR_CAMERA_DEVICE         = ACAMERA_ERROR_BASE - 5,
+
+    /**
+     * Camera operation has failed and the camera service has encountered a fatal error.
+     *
+     * <p>The Android device may need to be shut down and restarted to restore
+     * camera function, or there may be a persistent hardware problem.</p>
+     *
+     * <p>An attempt at recovery may be possible by closing the
+     * ACameraDevice and the ACameraManager, and trying to acquire all resources
+     * again from scratch.</p>
+     */
+    ACAMERA_ERROR_CAMERA_SERVICE        = ACAMERA_ERROR_BASE - 6,
+
+    /**
+     * The {@link ACameraCaptureSession} has been closed and cannnot perform any operation other
+     * than {@link ACameraCaptureSession_close}.
+     */
+    ACAMERA_ERROR_SESSION_CLOSED        = ACAMERA_ERROR_BASE - 7,
+
+    /**
+     * Camera operation has failed due to an invalid internal operation. Usually this is due to a
+     * low-level problem that may resolve itself on retry
+     */
+    ACAMERA_ERROR_INVALID_OPERATION     = ACAMERA_ERROR_BASE - 8,
+
+    /**
+     * Camera device does not support the stream configuration provided by application in
+     * {@link ACameraDevice_createCaptureSession}.
+     */
+    ACAMERA_ERROR_STREAM_CONFIGURE_FAIL = ACAMERA_ERROR_BASE - 9,
+
+    /**
+     * Camera device is being used by another higher priority camera API client.
+     */
+    ACAMERA_ERROR_CAMERA_IN_USE         = ACAMERA_ERROR_BASE - 10,
+
+    /**
+     * The system-wide limit for number of open cameras or camera resources has been reached, and
+     * more camera devices cannot be opened until previous instances are closed.
+     */
+    ACAMERA_ERROR_MAX_CAMERA_IN_USE     = ACAMERA_ERROR_BASE - 11,
+
+    /**
+     * The camera is disabled due to a device policy, and cannot be opened.
+     */
+    ACAMERA_ERROR_CAMERA_DISABLED       = ACAMERA_ERROR_BASE - 12,
+
+    /**
+     * The application does not have permission to open camera.
+     */
+    ACAMERA_ERROR_PERMISSION_DENIED     = ACAMERA_ERROR_BASE - 13,
+} camera_status_t;
+
+#endif /* __ANDROID_API__ >= 24 */
+
+__END_DECLS
+
+#endif /* _NDK_CAMERA_ERROR_H */
+
+/** @} */
diff --git a/camera/include/camera/ndk/NdkCameraManager.h b/camera/include/camera/ndk/NdkCameraManager.h
new file mode 100644
index 0000000..5b5c98b
--- /dev/null
+++ b/camera/include/camera/ndk/NdkCameraManager.h
@@ -0,0 +1,282 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @addtogroup Camera
+ * @{
+ */
+
+/**
+ * @file NdkCameraManager.h
+ */
+
+/*
+ * This file defines an NDK API.
+ * Do not remove methods.
+ * Do not change method signatures.
+ * Do not change the value of constants.
+ * Do not change the size of any of the classes defined in here.
+ * Do not reference types that are not part of the NDK.
+ * Do not #include files that aren't part of the NDK.
+ */
+
+#ifndef _NDK_CAMERA_MANAGER_H
+#define _NDK_CAMERA_MANAGER_H
+
+#include <sys/cdefs.h>
+
+#include "NdkCameraError.h"
+#include "NdkCameraMetadata.h"
+#include "NdkCameraDevice.h"
+
+__BEGIN_DECLS
+
+#if __ANDROID_API__ >= 24
+
+/**
+ * ACameraManager is opaque type that provides access to camera service.
+ *
+ * A pointer can be obtained using {@link ACameraManager_create} method.
+ */
+typedef struct ACameraManager ACameraManager;
+
+/**
+ * Create ACameraManager instance.
+ *
+ * <p>The ACameraManager is responsible for
+ * detecting, characterizing, and connecting to {@link ACameraDevice}s.</p>
+ *
+ * <p>The caller must call {@link ACameraManager_delete} to free the resources once it is done
+ * using the ACameraManager instance.</p>
+ *
+ * @return a {@link ACameraManager} instance.
+ *
+ */
+ACameraManager* ACameraManager_create();
+
+/**
+ * <p>Delete the {@link ACameraManager} instance and free its resources. </p>
+ *
+ * @param manager the {@link ACameraManager} instance to be deleted.
+ */
+void ACameraManager_delete(ACameraManager* manager);
+
+/// Struct to hold list of camera devices
+typedef struct ACameraIdList {
+    int numCameras;          ///< Number of connected camera devices
+    const char** cameraIds;  ///< list of identifier of connected camera devices
+} ACameraIdList;
+
+/**
+ * Create a list of currently connected camera devices, including
+ * cameras that may be in use by other camera API clients.
+ *
+ * <p>Non-removable cameras use integers starting at 0 for their
+ * identifiers, while removable cameras have a unique identifier for each
+ * individual device, even if they are the same model.</p>
+ *
+ * <p>ACameraManager_getCameraIdList will allocate and return an {@link ACameraIdList}.
+ * The caller must call {@link ACameraManager_deleteCameraIdList} to free the memory</p>
+ *
+ * @param manager the {@link ACameraManager} of interest
+ * @param cameraIdList the output {@link ACameraIdList} will be filled in here if the method call
+ *        succeeds.
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if manager or cameraIdList is NULL.</li>
+ *         <li>{@link ACAMERA_ERROR_CAMERA_DISCONNECTED} if connection to camera service fails.</li>
+ *         <li>{@link ACAMERA_ERROR_NOT_ENOUGH_MEMORY} if allocating memory fails.</li></ul>
+ */
+camera_status_t ACameraManager_getCameraIdList(ACameraManager* manager,
+                                              /*out*/ACameraIdList** cameraIdList);
+
+/**
+ * Delete a list of camera devices allocated via {@link ACameraManager_getCameraIdList}.
+ *
+ * @param cameraIdList the {@link ACameraIdList} to be deleted.
+ */
+void ACameraManager_deleteCameraIdList(ACameraIdList* cameraIdList);
+
+/**
+ * Definition of camera availability callbacks.
+ *
+ * @param context The optional application context provided by user in
+ *                {@link ACameraManager_AvailabilityCallbacks}.
+ * @param cameraId The ID of the camera device whose availability is changing. The memory of this
+ *                 argument is owned by camera framework and will become invalid immediately after
+ *                 this callback returns.
+ */
+typedef void (*ACameraManager_AvailabilityCallback)(void* context, const char* cameraId);
+
+/**
+ * A listener for camera devices becoming available or unavailable to open.
+ *
+ * <p>Cameras become available when they are no longer in use, or when a new
+ * removable camera is connected. They become unavailable when some
+ * application or service starts using a camera, or when a removable camera
+ * is disconnected.</p>
+ *
+ * @see ACameraManager_registerAvailabilityCallback
+ */
+typedef struct ACameraManager_AvailabilityListener {
+    /// Optional application context.
+    void*                               context;
+    /// Called when a camera becomes available
+    ACameraManager_AvailabilityCallback onCameraAvailable;
+    /// Called when a camera becomes unavailable
+    ACameraManager_AvailabilityCallback onCameraUnavailable;
+} ACameraManager_AvailabilityCallbacks;
+
+/**
+ * Register camera availability callbacks.
+ *
+ * <p>onCameraUnavailable will be called whenever a camera device is opened by any camera API client.
+ * Other camera API clients may still be able to open such a camera device, evicting the existing
+ * client if they have higher priority than the existing client of a camera device.
+ * See {@link ACameraManager_openCamera} for more details.</p>
+ *
+ * <p>The callbacks will be called on a dedicated thread shared among all ACameraManager
+ * instances.</p>
+ *
+ * <p>Since this callback will be registered with the camera service, remember to unregister it
+ * once it is no longer needed; otherwise the callback will continue to receive events
+ * indefinitely and it may prevent other resources from being released. Specifically, the
+ * callbacks will be invoked independently of the general activity lifecycle and independently
+ * of the state of individual ACameraManager instances.</p>
+ *
+ * @param manager the {@link ACameraManager} of interest.
+ * @param callback the {@link ACameraManager_AvailabilityCallbacks} to be registered.
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if manager or callback is NULL, or
+ *                  {ACameraManager_AvailabilityCallbacks#onCameraAvailable} or
+ *                  {ACameraManager_AvailabilityCallbacks#onCameraUnavailable} is NULL.</li></ul>
+ */
+camera_status_t ACameraManager_registerAvailabilityCallback(
+        ACameraManager* manager, const ACameraManager_AvailabilityCallbacks* callback);
+
+/**
+ * Unregister camera availability callbacks.
+ *
+ * <p>Removing a callback that isn't registered has no effect.</p>
+ *
+ * @param manager the {@link ACameraManager} of interest.
+ * @param callback the {@link ACameraManager_AvailabilityCallbacks} to be unregistered.
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if callback,
+ *                  {ACameraManager_AvailabilityCallbacks#onCameraAvailable} or
+ *                  {ACameraManager_AvailabilityCallbacks#onCameraUnavailable} is NULL.</li></ul>
+ */
+camera_status_t ACameraManager_unregisterAvailabilityCallback(
+        ACameraManager* manager, const ACameraManager_AvailabilityCallbacks* callback);
+
+/**
+ * Query the capabilities of a camera device. These capabilities are
+ * immutable for a given camera.
+ *
+ * <p>See {@link ACameraMetadata} document and {@link NdkCameraMetadataTags.h} for more details.</p>
+ *
+ * <p>The caller must call {@link ACameraMetadata_free} to free the memory of the output
+ * characteristics.</p>
+ *
+ * @param manager the {@link ACameraManager} of interest.
+ * @param cameraId the ID string of the camera device of interest.
+ * @param characteristics the output {@link ACameraMetadata} will be filled here if the method call
+ *        succeeeds.
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if manager, cameraId, or characteristics
+ *                  is NULL, or cameraId does not match any camera devices connected.</li>
+ *         <li>{@link ACAMERA_ERROR_CAMERA_DISCONNECTED} if connection to camera service fails.</li>
+ *         <li>{@link ACAMERA_ERROR_NOT_ENOUGH_MEMORY} if allocating memory fails.</li>
+ *         <li>{@link ACAMERA_ERROR_UNKNOWN} if the method fails for some other reasons.</li></ul>
+ */
+camera_status_t ACameraManager_getCameraCharacteristics(
+        ACameraManager* manager, const char* cameraId,
+        /*out*/ACameraMetadata** characteristics);
+
+/**
+ * Open a connection to a camera with the given ID. The opened camera device will be
+ * returned in the `device` parameter.
+ *
+ * <p>Use {@link ACameraManager_getCameraIdList} to get the list of available camera
+ * devices. Note that even if an id is listed, open may fail if the device
+ * is disconnected between the calls to {@link ACameraManager_getCameraIdList} and
+ * {@link ACameraManager_openCamera}, or if a higher-priority camera API client begins using the
+ * camera device.</p>
+ *
+ * <p>Devices for which the
+ * {@link ACameraManager_AvailabilityCallbacks#onCameraUnavailable} callback has been called due to
+ * the device being in use by a lower-priority, background camera API client can still potentially
+ * be opened by calling this method when the calling camera API client has a higher priority
+ * than the current camera API client using this device.  In general, if the top, foreground
+ * activity is running within your application process, your process will be given the highest
+ * priority when accessing the camera, and this method will succeed even if the camera device is
+ * in use by another camera API client. Any lower-priority application that loses control of the
+ * camera in this way will receive an
+ * {@link ACameraDevice_stateCallbacks#onDisconnected} callback.</p>
+ *
+ * <p>Once the camera is successfully opened,the ACameraDevice can then be set up
+ * for operation by calling {@link ACameraDevice_createCaptureSession} and
+ * {@link ACameraDevice_createCaptureRequest}.</p>
+ *
+ * <p>If the camera becomes disconnected after this function call returns,
+ * {@link ACameraDevice_stateCallbacks#onDisconnected} with a
+ * ACameraDevice in the disconnected state will be called.</p>
+ *
+ * <p>If the camera runs into error after this function call returns,
+ * {@link ACameraDevice_stateCallbacks#onError} with a
+ * ACameraDevice in the error state will be called.</p>
+ *
+ * @param manager the {@link ACameraManager} of interest.
+ * @param cameraId the ID string of the camera device to be opened.
+ * @param callback the {@link ACameraDevice_StateCallbacks} associated with the opened camera device.
+ * @param device the opened {@link ACameraDevice} will be filled here if the method call succeeds.
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if manager, cameraId, callback, or device
+ *                  is NULL, or cameraId does not match any camera devices connected.</li>
+ *         <li>{@link ACAMERA_ERROR_CAMERA_DISCONNECTED} if connection to camera service fails.</li>
+ *         <li>{@link ACAMERA_ERROR_NOT_ENOUGH_MEMORY} if allocating memory fails.</li>
+ *         <li>{@link ACAMERA_ERROR_CAMERA_IN_USE} if camera device is being used by a higher
+ *                   priority camera API client.</li>
+ *         <li>{@link ACAMERA_ERROR_MAX_CAMERA_IN_USE} if the system-wide limit for number of open
+ *                   cameras or camera resources has been reached, and more camera devices cannot be
+ *                   opened until previous instances are closed.</li>
+ *         <li>{@link ACAMERA_ERROR_CAMERA_DISABLED} if the camera is disabled due to a device
+ *                   policy, and cannot be opened.</li>
+ *         <li>{@link ACAMERA_ERROR_PERMISSION_DENIED} if the application does not have permission
+ *                   to open camera.</li>
+ *         <li>{@link ACAMERA_ERROR_UNKNOWN} if the method fails for some other reasons.</li></ul>
+ */
+camera_status_t ACameraManager_openCamera(
+        ACameraManager* manager, const char* cameraId,
+        ACameraDevice_StateCallbacks* callback,
+        /*out*/ACameraDevice** device);
+
+#endif /* __ANDROID_API__ >= 24 */
+
+__END_DECLS
+
+#endif /* _NDK_CAMERA_MANAGER_H */
+
+/** @} */
diff --git a/camera/include/camera/ndk/NdkCameraMetadata.h b/camera/include/camera/ndk/NdkCameraMetadata.h
new file mode 100644
index 0000000..f2aec98
--- /dev/null
+++ b/camera/include/camera/ndk/NdkCameraMetadata.h
@@ -0,0 +1,237 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @addtogroup Camera
+ * @{
+ */
+
+/**
+ * @file NdkCameraMetadata.h
+ */
+
+/*
+ * This file defines an NDK API.
+ * Do not remove methods.
+ * Do not change method signatures.
+ * Do not change the value of constants.
+ * Do not change the size of any of the classes defined in here.
+ * Do not reference types that are not part of the NDK.
+ * Do not #include files that aren't part of the NDK.
+ */
+
+#ifndef _NDK_CAMERA_METADATA_H
+#define _NDK_CAMERA_METADATA_H
+
+#include <sys/cdefs.h>
+
+#include "NdkCameraError.h"
+#include "NdkCameraMetadataTags.h"
+
+__BEGIN_DECLS
+
+#if __ANDROID_API__ >= 24
+
+/**
+ * ACameraMetadata is opaque type that provides access to read-only camera metadata like camera
+ * characteristics (via {@link ACameraManager_getCameraCharacteristics}) or capture results (via
+ * {@link ACameraCaptureSession_captureCallback_result}).
+ */
+typedef struct ACameraMetadata ACameraMetadata;
+
+/**
+ * Possible data types of a metadata entry.
+ *
+ * Keep in sync with system/media/include/system/camera_metadata.h
+ */
+enum {
+    /// Unsigned 8-bit integer (uint8_t)
+    ACAMERA_TYPE_BYTE = 0,
+    /// Signed 32-bit integer (int32_t)
+    ACAMERA_TYPE_INT32 = 1,
+    /// 32-bit float (float)
+    ACAMERA_TYPE_FLOAT = 2,
+    /// Signed 64-bit integer (int64_t)
+    ACAMERA_TYPE_INT64 = 3,
+    /// 64-bit float (double)
+    ACAMERA_TYPE_DOUBLE = 4,
+    /// A 64-bit fraction (ACameraMetadata_rational)
+    ACAMERA_TYPE_RATIONAL = 5,
+    /// Number of type fields
+    ACAMERA_NUM_TYPES
+};
+
+/**
+ * Definition of rational data type in {@link ACameraMetadata}.
+ */
+typedef struct ACameraMetadata_rational {
+    int32_t numerator;
+    int32_t denominator;
+} ACameraMetadata_rational;
+
+/**
+ * A single camera metadata entry.
+ *
+ * <p>Each entry is an array of values, though many metadata fields may only have 1 entry in the
+ * array.</p>
+ */
+typedef struct ACameraMetadata_entry {
+    /**
+     * The tag identifying the entry.
+     *
+     * <p> It is one of the values defined in {@link NdkCameraMetadataTags.h}, and defines how the
+     * entry should be interpreted and which parts of the API provide it.
+     * See {@link NdkCameraMetadataTags.h} for more details. </p>
+     */
+    uint32_t tag;
+
+    /**
+     * The data type of this metadata entry.
+     *
+     * <p>Must be one of ACAMERA_TYPE_* enum values defined above. A particular tag always has the
+     * same type.</p>
+     */
+    uint8_t  type;
+
+    /**
+     * Count of elements (NOT count of bytes) in this metadata entry.
+     */
+    uint32_t count;
+
+    /**
+     * Pointer to the data held in this metadata entry.
+     *
+     * <p>The type field above defines which union member pointer is valid. The count field above
+     * defines the length of the data in number of elements.</p>
+     */
+    union {
+        uint8_t *u8;
+        int32_t *i32;
+        float   *f;
+        int64_t *i64;
+        double  *d;
+        ACameraMetadata_rational* r;
+    } data;
+} ACameraMetadata_entry;
+
+/**
+ * A single read-only camera metadata entry.
+ *
+ * <p>Each entry is an array of values, though many metadata fields may only have 1 entry in the
+ * array.</p>
+ */
+typedef struct ACameraMetadata_const_entry {
+    /**
+     * The tag identifying the entry.
+     *
+     * <p> It is one of the values defined in {@link NdkCameraMetadataTags.h}, and defines how the
+     * entry should be interpreted and which parts of the API provide it.
+     * See {@link NdkCameraMetadataTags.h} for more details. </p>
+     */
+    uint32_t tag;
+
+    /**
+     * The data type of this metadata entry.
+     *
+     * <p>Must be one of ACAMERA_TYPE_* enum values defined above. A particular tag always has the
+     * same type.</p>
+     */
+    uint8_t  type;
+
+    /**
+     * Count of elements (NOT count of bytes) in this metadata entry.
+     */
+    uint32_t count;
+
+    /**
+     * Pointer to the data held in this metadata entry.
+     *
+     * <p>The type field above defines which union member pointer is valid. The count field above
+     * defines the length of the data in number of elements.</p>
+     */
+    union {
+        const uint8_t *u8;
+        const int32_t *i32;
+        const float   *f;
+        const int64_t *i64;
+        const double  *d;
+        const ACameraMetadata_rational* r;
+    } data;
+} ACameraMetadata_const_entry;
+
+/**
+ * Get a metadata entry from an input {@link ACameraMetadata}.
+ *
+ * <p>The memory of the data field in the returned entry is managed by camera framework. Do not
+ * attempt to free it.</p>
+ *
+ * @param metadata the {@link ACameraMetadata} of interest.
+ * @param tag the tag value of the camera metadata entry to be get.
+ * @param entry the output {@link ACameraMetadata_const_entry} will be filled here if the method
+ *        call succeeeds.
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if metadata or entry is NULL.</li>
+ *         <li>{@link ACAMERA_ERROR_METADATA_NOT_FOUND} if input metadata does not contain an entry
+ *             of input tag value.</li></ul>
+ */
+camera_status_t ACameraMetadata_getConstEntry(
+        const ACameraMetadata* metadata, uint32_t tag, /*out*/ACameraMetadata_const_entry* entry);
+
+/**
+ * List all the entry tags in input {@link ACameraMetadata}.
+ *
+ * @param metadata the {@link ACameraMetadata} of interest.
+ * @param numEntries number of metadata entries in input {@link ACameraMetadata}
+ * @param tags the tag values of the metadata entries. Length of tags is returned in numEntries
+ *             argument. The memory is managed by ACameraMetadata itself and must NOT be free/delete
+ *             by application. Do NOT access tags after calling ACameraMetadata_free.
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if metadata, numEntries or tags is NULL.</li>
+ *         <li>{@link ACAMERA_ERROR_UNKNOWN} if the method fails for some other reasons.</li></ul>
+ */
+camera_status_t ACameraMetadata_getAllTags(
+        const ACameraMetadata* metadata, /*out*/int32_t* numEntries, /*out*/const uint32_t** tags);
+
+/**
+ * Create a copy of input {@link ACameraMetadata}.
+ *
+ * <p>The returned ACameraMetadata must be freed by the application by {@link ACameraMetadata_free}
+ * after application is done using it.</p>
+ *
+ * @param src the input {@link ACameraMetadata} to be copied.
+ *
+ * @return a valid ACameraMetadata pointer or NULL if the input metadata cannot be copied.
+ */
+ACameraMetadata* ACameraMetadata_copy(const ACameraMetadata* src);
+
+/**
+ * Free a {@link ACameraMetadata} structure.
+ *
+ * @param metadata the {@link ACameraMetadata} to be freed.
+ */
+void ACameraMetadata_free(ACameraMetadata* metadata);
+
+#endif /* __ANDROID_API__ >= 24 */
+
+__END_DECLS
+
+#endif /* _NDK_CAMERA_METADATA_H */
+
+/** @} */
diff --git a/camera/include/camera/ndk/NdkCameraMetadataTags.h b/camera/include/camera/ndk/NdkCameraMetadataTags.h
new file mode 100644
index 0000000..629d75a
--- /dev/null
+++ b/camera/include/camera/ndk/NdkCameraMetadataTags.h
@@ -0,0 +1,7290 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @addtogroup Camera
+ * @{
+ */
+
+/**
+ * @file NdkCameraMetadataTags.h
+ */
+
+/*
+ * This file defines an NDK API.
+ * Do not remove methods.
+ * Do not change method signatures.
+ * Do not change the value of constants.
+ * Do not change the size of any of the classes defined in here.
+ * Do not reference types that are not part of the NDK.
+ * Do not #include files that aren't part of the NDK.
+ */
+
+#ifndef _NDK_CAMERA_METADATA_TAGS_H
+#define _NDK_CAMERA_METADATA_TAGS_H
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+#if __ANDROID_API__ >= 24
+
+typedef enum acamera_metadata_section {
+    ACAMERA_COLOR_CORRECTION,
+    ACAMERA_CONTROL,
+    ACAMERA_DEMOSAIC,
+    ACAMERA_EDGE,
+    ACAMERA_FLASH,
+    ACAMERA_FLASH_INFO,
+    ACAMERA_HOT_PIXEL,
+    ACAMERA_JPEG,
+    ACAMERA_LENS,
+    ACAMERA_LENS_INFO,
+    ACAMERA_NOISE_REDUCTION,
+    ACAMERA_QUIRKS,
+    ACAMERA_REQUEST,
+    ACAMERA_SCALER,
+    ACAMERA_SENSOR,
+    ACAMERA_SENSOR_INFO,
+    ACAMERA_SHADING,
+    ACAMERA_STATISTICS,
+    ACAMERA_STATISTICS_INFO,
+    ACAMERA_TONEMAP,
+    ACAMERA_LED,
+    ACAMERA_INFO,
+    ACAMERA_BLACK_LEVEL,
+    ACAMERA_SYNC,
+    ACAMERA_REPROCESS,
+    ACAMERA_DEPTH,
+    ACAMERA_SECTION_COUNT,
+
+    ACAMERA_VENDOR = 0x8000
+} acamera_metadata_section_t;
+
+/**
+ * Hierarchy positions in enum space.
+ */
+typedef enum acamera_metadata_section_start {
+    ACAMERA_COLOR_CORRECTION_START = ACAMERA_COLOR_CORRECTION  << 16,
+    ACAMERA_CONTROL_START          = ACAMERA_CONTROL           << 16,
+    ACAMERA_DEMOSAIC_START         = ACAMERA_DEMOSAIC          << 16,
+    ACAMERA_EDGE_START             = ACAMERA_EDGE              << 16,
+    ACAMERA_FLASH_START            = ACAMERA_FLASH             << 16,
+    ACAMERA_FLASH_INFO_START       = ACAMERA_FLASH_INFO        << 16,
+    ACAMERA_HOT_PIXEL_START        = ACAMERA_HOT_PIXEL         << 16,
+    ACAMERA_JPEG_START             = ACAMERA_JPEG              << 16,
+    ACAMERA_LENS_START             = ACAMERA_LENS              << 16,
+    ACAMERA_LENS_INFO_START        = ACAMERA_LENS_INFO         << 16,
+    ACAMERA_NOISE_REDUCTION_START  = ACAMERA_NOISE_REDUCTION   << 16,
+    ACAMERA_QUIRKS_START           = ACAMERA_QUIRKS            << 16,
+    ACAMERA_REQUEST_START          = ACAMERA_REQUEST           << 16,
+    ACAMERA_SCALER_START           = ACAMERA_SCALER            << 16,
+    ACAMERA_SENSOR_START           = ACAMERA_SENSOR            << 16,
+    ACAMERA_SENSOR_INFO_START      = ACAMERA_SENSOR_INFO       << 16,
+    ACAMERA_SHADING_START          = ACAMERA_SHADING           << 16,
+    ACAMERA_STATISTICS_START       = ACAMERA_STATISTICS        << 16,
+    ACAMERA_STATISTICS_INFO_START  = ACAMERA_STATISTICS_INFO   << 16,
+    ACAMERA_TONEMAP_START          = ACAMERA_TONEMAP           << 16,
+    ACAMERA_LED_START              = ACAMERA_LED               << 16,
+    ACAMERA_INFO_START             = ACAMERA_INFO              << 16,
+    ACAMERA_BLACK_LEVEL_START      = ACAMERA_BLACK_LEVEL       << 16,
+    ACAMERA_SYNC_START             = ACAMERA_SYNC              << 16,
+    ACAMERA_REPROCESS_START        = ACAMERA_REPROCESS         << 16,
+    ACAMERA_DEPTH_START            = ACAMERA_DEPTH             << 16,
+    ACAMERA_VENDOR_START           = ACAMERA_VENDOR            << 16
+} acamera_metadata_section_start_t;
+
+/**
+ * Main enum for camera metadata tags.
+ */
+typedef enum acamera_metadata_tag {
+    /**
+     * <p>The mode control selects how the image data is converted from the
+     * sensor's native color into linear sRGB color.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_color_correction_mode_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>When auto-white balance (AWB) is enabled with ACAMERA_CONTROL_AWB_MODE, this
+     * control is overridden by the AWB routine. When AWB is disabled, the
+     * application controls how the color mapping is performed.</p>
+     * <p>We define the expected processing pipeline below. For consistency
+     * across devices, this is always the case with TRANSFORM_MATRIX.</p>
+     * <p>When either FULL or HIGH_QUALITY is used, the camera device may
+     * do additional processing but ACAMERA_COLOR_CORRECTION_GAINS and
+     * ACAMERA_COLOR_CORRECTION_TRANSFORM will still be provided by the
+     * camera device (in the results) and be roughly correct.</p>
+     * <p>Switching to TRANSFORM_MATRIX and using the data provided from
+     * FAST or HIGH_QUALITY will yield a picture with the same white point
+     * as what was produced by the camera device in the earlier frame.</p>
+     * <p>The expected processing pipeline is as follows:</p>
+     * <p><img alt="White balance processing pipeline" src="../images/camera2/metadata/android.colorCorrection.mode/processing_pipeline.png" /></p>
+     * <p>The white balance is encoded by two values, a 4-channel white-balance
+     * gain vector (applied in the Bayer domain), and a 3x3 color transform
+     * matrix (applied after demosaic).</p>
+     * <p>The 4-channel white-balance gains are defined as:</p>
+     * <pre><code>ACAMERA_COLOR_CORRECTION_GAINS = [ R G_even G_odd B ]
+     * </code></pre>
+     * <p>where <code>G_even</code> is the gain for green pixels on even rows of the
+     * output, and <code>G_odd</code> is the gain for green pixels on the odd rows.
+     * These may be identical for a given camera device implementation; if
+     * the camera device does not support a separate gain for even/odd green
+     * channels, it will use the <code>G_even</code> value, and write <code>G_odd</code> equal to
+     * <code>G_even</code> in the output result metadata.</p>
+     * <p>The matrices for color transforms are defined as a 9-entry vector:</p>
+     * <pre><code>ACAMERA_COLOR_CORRECTION_TRANSFORM = [ I0 I1 I2 I3 I4 I5 I6 I7 I8 ]
+     * </code></pre>
+     * <p>which define a transform from input sensor colors, <code>P_in = [ r g b ]</code>,
+     * to output linear sRGB, <code>P_out = [ r' g' b' ]</code>,</p>
+     * <p>with colors as follows:</p>
+     * <pre><code>r' = I0r + I1g + I2b
+     * g' = I3r + I4g + I5b
+     * b' = I6r + I7g + I8b
+     * </code></pre>
+     * <p>Both the input and output value ranges must match. Overflow/underflow
+     * values are clipped to fit within the range.</p>
+     *
+     * @see ACAMERA_COLOR_CORRECTION_GAINS
+     * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+     * @see ACAMERA_CONTROL_AWB_MODE
+     */
+    ACAMERA_COLOR_CORRECTION_MODE =                             // byte (acamera_metadata_enum_android_color_correction_mode_t)
+            ACAMERA_COLOR_CORRECTION_START,
+    /**
+     * <p>A color transform matrix to use to transform
+     * from sensor RGB color space to output linear sRGB color space.</p>
+     *
+     * <p>Type: rational[3*3]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>This matrix is either set by the camera device when the request
+     * ACAMERA_COLOR_CORRECTION_MODE is not TRANSFORM_MATRIX, or
+     * directly by the application in the request when the
+     * ACAMERA_COLOR_CORRECTION_MODE is TRANSFORM_MATRIX.</p>
+     * <p>In the latter case, the camera device may round the matrix to account
+     * for precision issues; the final rounded matrix should be reported back
+     * in this matrix result metadata. The transform should keep the magnitude
+     * of the output color values within <code>[0, 1.0]</code> (assuming input color
+     * values is within the normalized range <code>[0, 1.0]</code>), or clipping may occur.</p>
+     * <p>The valid range of each matrix element varies on different devices, but
+     * values within [-1.5, 3.0] are guaranteed not to be clipped.</p>
+     *
+     * @see ACAMERA_COLOR_CORRECTION_MODE
+     */
+    ACAMERA_COLOR_CORRECTION_TRANSFORM =                        // rational[3*3]
+            ACAMERA_COLOR_CORRECTION_START + 1,
+    /**
+     * <p>Gains applying to Bayer raw color channels for
+     * white-balance.</p>
+     *
+     * <p>Type: float[4]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>These per-channel gains are either set by the camera device
+     * when the request ACAMERA_COLOR_CORRECTION_MODE is not
+     * TRANSFORM_MATRIX, or directly by the application in the
+     * request when the ACAMERA_COLOR_CORRECTION_MODE is
+     * TRANSFORM_MATRIX.</p>
+     * <p>The gains in the result metadata are the gains actually
+     * applied by the camera device to the current frame.</p>
+     * <p>The valid range of gains varies on different devices, but gains
+     * between [1.0, 3.0] are guaranteed not to be clipped. Even if a given
+     * device allows gains below 1.0, this is usually not recommended because
+     * this can create color artifacts.</p>
+     *
+     * @see ACAMERA_COLOR_CORRECTION_MODE
+     */
+    ACAMERA_COLOR_CORRECTION_GAINS =                            // float[4]
+            ACAMERA_COLOR_CORRECTION_START + 2,
+    /**
+     * <p>Mode of operation for the chromatic aberration correction algorithm.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_color_correction_aberration_mode_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>Chromatic (color) aberration is caused by the fact that different wavelengths of light
+     * can not focus on the same point after exiting from the lens. This metadata defines
+     * the high level control of chromatic aberration correction algorithm, which aims to
+     * minimize the chromatic artifacts that may occur along the object boundaries in an
+     * image.</p>
+     * <p>FAST/HIGH_QUALITY both mean that camera device determined aberration
+     * correction will be applied. HIGH_QUALITY mode indicates that the camera device will
+     * use the highest-quality aberration correction algorithms, even if it slows down
+     * capture rate. FAST means the camera device will not slow down capture rate when
+     * applying aberration correction.</p>
+     * <p>LEGACY devices will always be in FAST mode.</p>
+     */
+    ACAMERA_COLOR_CORRECTION_ABERRATION_MODE =                  // byte (acamera_metadata_enum_android_color_correction_aberration_mode_t)
+            ACAMERA_COLOR_CORRECTION_START + 3,
+    /**
+     * <p>List of aberration correction modes for ACAMERA_COLOR_CORRECTION_ABERRATION_MODE that are
+     * supported by this camera device.</p>
+     *
+     * @see ACAMERA_COLOR_CORRECTION_ABERRATION_MODE
+     *
+     * <p>Type: byte[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>This key lists the valid modes for ACAMERA_COLOR_CORRECTION_ABERRATION_MODE.  If no
+     * aberration correction modes are available for a device, this list will solely include
+     * OFF mode. All camera devices will support either OFF or FAST mode.</p>
+     * <p>Camera devices that support the MANUAL_POST_PROCESSING capability will always list
+     * OFF mode. This includes all FULL level devices.</p>
+     * <p>LEGACY devices will always only support FAST mode.</p>
+     *
+     * @see ACAMERA_COLOR_CORRECTION_ABERRATION_MODE
+     */
+    ACAMERA_COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES =       // byte[n]
+            ACAMERA_COLOR_CORRECTION_START + 4,
+    ACAMERA_COLOR_CORRECTION_END,
+
+    /**
+     * <p>The desired setting for the camera device's auto-exposure
+     * algorithm's antibanding compensation.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_control_ae_antibanding_mode_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>Some kinds of lighting fixtures, such as some fluorescent
+     * lights, flicker at the rate of the power supply frequency
+     * (60Hz or 50Hz, depending on country). While this is
+     * typically not noticeable to a person, it can be visible to
+     * a camera device. If a camera sets its exposure time to the
+     * wrong value, the flicker may become visible in the
+     * viewfinder as flicker or in a final captured image, as a
+     * set of variable-brightness bands across the image.</p>
+     * <p>Therefore, the auto-exposure routines of camera devices
+     * include antibanding routines that ensure that the chosen
+     * exposure value will not cause such banding. The choice of
+     * exposure time depends on the rate of flicker, which the
+     * camera device can detect automatically, or the expected
+     * rate can be selected by the application using this
+     * control.</p>
+     * <p>A given camera device may not support all of the possible
+     * options for the antibanding mode. The
+     * ACAMERA_CONTROL_AE_AVAILABLE_ANTIBANDING_MODES key contains
+     * the available modes for a given camera device.</p>
+     * <p>AUTO mode is the default if it is available on given
+     * camera device. When AUTO mode is not available, the
+     * default will be either 50HZ or 60HZ, and both 50HZ
+     * and 60HZ will be available.</p>
+     * <p>If manual exposure control is enabled (by setting
+     * ACAMERA_CONTROL_AE_MODE or ACAMERA_CONTROL_MODE to OFF),
+     * then this setting has no effect, and the application must
+     * ensure it selects exposure times that do not cause banding
+     * issues. The ACAMERA_STATISTICS_SCENE_FLICKER key can assist
+     * the application in this.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_AVAILABLE_ANTIBANDING_MODES
+     * @see ACAMERA_CONTROL_AE_MODE
+     * @see ACAMERA_CONTROL_MODE
+     * @see ACAMERA_STATISTICS_SCENE_FLICKER
+     */
+    ACAMERA_CONTROL_AE_ANTIBANDING_MODE =                       // byte (acamera_metadata_enum_android_control_ae_antibanding_mode_t)
+            ACAMERA_CONTROL_START,
+    /**
+     * <p>Adjustment to auto-exposure (AE) target image
+     * brightness.</p>
+     *
+     * <p>Type: int32</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>The adjustment is measured as a count of steps, with the
+     * step size defined by ACAMERA_CONTROL_AE_COMPENSATION_STEP and the
+     * allowed range by ACAMERA_CONTROL_AE_COMPENSATION_RANGE.</p>
+     * <p>For example, if the exposure value (EV) step is 0.333, '6'
+     * will mean an exposure compensation of +2 EV; -3 will mean an
+     * exposure compensation of -1 EV. One EV represents a doubling
+     * of image brightness. Note that this control will only be
+     * effective if ACAMERA_CONTROL_AE_MODE <code>!=</code> OFF. This control
+     * will take effect even when ACAMERA_CONTROL_AE_LOCK <code>== true</code>.</p>
+     * <p>In the event of exposure compensation value being changed, camera device
+     * may take several frames to reach the newly requested exposure target.
+     * During that time, ACAMERA_CONTROL_AE_STATE field will be in the SEARCHING
+     * state. Once the new exposure target is reached, ACAMERA_CONTROL_AE_STATE will
+     * change from SEARCHING to either CONVERGED, LOCKED (if AE lock is enabled), or
+     * FLASH_REQUIRED (if the scene is too dark for still capture).</p>
+     *
+     * @see ACAMERA_CONTROL_AE_COMPENSATION_RANGE
+     * @see ACAMERA_CONTROL_AE_COMPENSATION_STEP
+     * @see ACAMERA_CONTROL_AE_LOCK
+     * @see ACAMERA_CONTROL_AE_MODE
+     * @see ACAMERA_CONTROL_AE_STATE
+     */
+    ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION =                  // int32
+            ACAMERA_CONTROL_START + 1,
+    /**
+     * <p>Whether auto-exposure (AE) is currently locked to its latest
+     * calculated values.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_control_ae_lock_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>When set to <code>true</code> (ON), the AE algorithm is locked to its latest parameters,
+     * and will not change exposure settings until the lock is set to <code>false</code> (OFF).</p>
+     * <p>Note that even when AE is locked, the flash may be fired if
+     * the ACAMERA_CONTROL_AE_MODE is ON_AUTO_FLASH /
+     * ON_ALWAYS_FLASH / ON_AUTO_FLASH_REDEYE.</p>
+     * <p>When ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION is changed, even if the AE lock
+     * is ON, the camera device will still adjust its exposure value.</p>
+     * <p>If AE precapture is triggered (see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER)
+     * when AE is already locked, the camera device will not change the exposure time
+     * (ACAMERA_SENSOR_EXPOSURE_TIME) and sensitivity (ACAMERA_SENSOR_SENSITIVITY)
+     * parameters. The flash may be fired if the ACAMERA_CONTROL_AE_MODE
+     * is ON_AUTO_FLASH/ON_AUTO_FLASH_REDEYE and the scene is too dark. If the
+     * ACAMERA_CONTROL_AE_MODE is ON_ALWAYS_FLASH, the scene may become overexposed.
+     * Similarly, AE precapture trigger CANCEL has no effect when AE is already locked.</p>
+     * <p>When an AE precapture sequence is triggered, AE unlock will not be able to unlock
+     * the AE if AE is locked by the camera device internally during precapture metering
+     * sequence In other words, submitting requests with AE unlock has no effect for an
+     * ongoing precapture metering sequence. Otherwise, the precapture metering sequence
+     * will never succeed in a sequence of preview requests where AE lock is always set
+     * to <code>false</code>.</p>
+     * <p>Since the camera device has a pipeline of in-flight requests, the settings that
+     * get locked do not necessarily correspond to the settings that were present in the
+     * latest capture result received from the camera device, since additional captures
+     * and AE updates may have occurred even before the result was sent out. If an
+     * application is switching between automatic and manual control and wishes to eliminate
+     * any flicker during the switch, the following procedure is recommended:</p>
+     * <ol>
+     * <li>Starting in auto-AE mode:</li>
+     * <li>Lock AE</li>
+     * <li>Wait for the first result to be output that has the AE locked</li>
+     * <li>Copy exposure settings from that result into a request, set the request to manual AE</li>
+     * <li>Submit the capture request, proceed to run manual AE as desired.</li>
+     * </ol>
+     * <p>See ACAMERA_CONTROL_AE_STATE for AE lock related state transition details.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION
+     * @see ACAMERA_CONTROL_AE_MODE
+     * @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
+     * @see ACAMERA_CONTROL_AE_STATE
+     * @see ACAMERA_SENSOR_EXPOSURE_TIME
+     * @see ACAMERA_SENSOR_SENSITIVITY
+     */
+    ACAMERA_CONTROL_AE_LOCK =                                   // byte (acamera_metadata_enum_android_control_ae_lock_t)
+            ACAMERA_CONTROL_START + 2,
+    /**
+     * <p>The desired mode for the camera device's
+     * auto-exposure routine.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_control_ae_mode_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>This control is only effective if ACAMERA_CONTROL_MODE is
+     * AUTO.</p>
+     * <p>When set to any of the ON modes, the camera device's
+     * auto-exposure routine is enabled, overriding the
+     * application's selected exposure time, sensor sensitivity,
+     * and frame duration (ACAMERA_SENSOR_EXPOSURE_TIME,
+     * ACAMERA_SENSOR_SENSITIVITY, and
+     * ACAMERA_SENSOR_FRAME_DURATION). If one of the FLASH modes
+     * is selected, the camera device's flash unit controls are
+     * also overridden.</p>
+     * <p>The FLASH modes are only available if the camera device
+     * has a flash unit (ACAMERA_FLASH_INFO_AVAILABLE is <code>true</code>).</p>
+     * <p>If flash TORCH mode is desired, this field must be set to
+     * ON or OFF, and ACAMERA_FLASH_MODE set to TORCH.</p>
+     * <p>When set to any of the ON modes, the values chosen by the
+     * camera device auto-exposure routine for the overridden
+     * fields for a given capture will be available in its
+     * CaptureResult.</p>
+     *
+     * @see ACAMERA_CONTROL_MODE
+     * @see ACAMERA_FLASH_INFO_AVAILABLE
+     * @see ACAMERA_FLASH_MODE
+     * @see ACAMERA_SENSOR_EXPOSURE_TIME
+     * @see ACAMERA_SENSOR_FRAME_DURATION
+     * @see ACAMERA_SENSOR_SENSITIVITY
+     */
+    ACAMERA_CONTROL_AE_MODE =                                   // byte (acamera_metadata_enum_android_control_ae_mode_t)
+            ACAMERA_CONTROL_START + 3,
+    /**
+     * <p>List of metering areas to use for auto-exposure adjustment.</p>
+     *
+     * <p>Type: int32[5*area_count]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>Not available if android.control.maxRegionsAe is 0.
+     * Otherwise will always be present.</p>
+     * <p>The maximum number of regions supported by the device is determined by the value
+     * of android.control.maxRegionsAe.</p>
+     * <p>The data representation is int[5 * area_count].
+     * Every five elements represent a metering region of (xmin, ymin, xmax, ymax, weight).
+     * The rectangle is defined to be inclusive on xmin and ymin, but exclusive on xmax and
+     * ymax.</p>
+     * <p>The coordinate system is based on the active pixel array,
+     * with (0,0) being the top-left pixel in the active pixel array, and
+     * (ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.width - 1,
+     * ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.height - 1) being the
+     * bottom-right pixel in the active pixel array.</p>
+     * <p>The weight must be within <code>[0, 1000]</code>, and represents a weight
+     * for every pixel in the area. This means that a large metering area
+     * with the same weight as a smaller area will have more effect in
+     * the metering result. Metering areas can partially overlap and the
+     * camera device will add the weights in the overlap region.</p>
+     * <p>The weights are relative to weights of other exposure metering regions, so if only one
+     * region is used, all non-zero weights will have the same effect. A region with 0
+     * weight is ignored.</p>
+     * <p>If all regions have 0 weight, then no specific metering area needs to be used by the
+     * camera device.</p>
+     * <p>If the metering region is outside the used ACAMERA_SCALER_CROP_REGION returned in
+     * capture result metadata, the camera device will ignore the sections outside the crop
+     * region and output only the intersection rectangle as the metering region in the result
+     * metadata.  If the region is entirely outside the crop region, it will be ignored and
+     * not reported in the result metadata.</p>
+     *
+     * @see ACAMERA_SCALER_CROP_REGION
+     * @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+     */
+    ACAMERA_CONTROL_AE_REGIONS =                                // int32[5*area_count]
+            ACAMERA_CONTROL_START + 4,
+    /**
+     * <p>Range over which the auto-exposure routine can
+     * adjust the capture frame rate to maintain good
+     * exposure.</p>
+     *
+     * <p>Type: int32[2]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>Only constrains auto-exposure (AE) algorithm, not
+     * manual control of ACAMERA_SENSOR_EXPOSURE_TIME and
+     * ACAMERA_SENSOR_FRAME_DURATION.</p>
+     *
+     * @see ACAMERA_SENSOR_EXPOSURE_TIME
+     * @see ACAMERA_SENSOR_FRAME_DURATION
+     */
+    ACAMERA_CONTROL_AE_TARGET_FPS_RANGE =                       // int32[2]
+            ACAMERA_CONTROL_START + 5,
+    /**
+     * <p>Whether the camera device will trigger a precapture
+     * metering sequence when it processes this request.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_control_ae_precapture_trigger_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>This entry is normally set to IDLE, or is not
+     * included at all in the request settings. When included and
+     * set to START, the camera device will trigger the auto-exposure (AE)
+     * precapture metering sequence.</p>
+     * <p>When set to CANCEL, the camera device will cancel any active
+     * precapture metering trigger, and return to its initial AE state.
+     * If a precapture metering sequence is already completed, and the camera
+     * device has implicitly locked the AE for subsequent still capture, the
+     * CANCEL trigger will unlock the AE and return to its initial AE state.</p>
+     * <p>The precapture sequence should be triggered before starting a
+     * high-quality still capture for final metering decisions to
+     * be made, and for firing pre-capture flash pulses to estimate
+     * scene brightness and required final capture flash power, when
+     * the flash is enabled.</p>
+     * <p>Normally, this entry should be set to START for only a
+     * single request, and the application should wait until the
+     * sequence completes before starting a new one.</p>
+     * <p>When a precapture metering sequence is finished, the camera device
+     * may lock the auto-exposure routine internally to be able to accurately expose the
+     * subsequent still capture image (<code>ACAMERA_CONTROL_CAPTURE_INTENT == STILL_CAPTURE</code>).
+     * For this case, the AE may not resume normal scan if no subsequent still capture is
+     * submitted. To ensure that the AE routine restarts normal scan, the application should
+     * submit a request with <code>ACAMERA_CONTROL_AE_LOCK == true</code>, followed by a request
+     * with <code>ACAMERA_CONTROL_AE_LOCK == false</code>, if the application decides not to submit a
+     * still capture request after the precapture sequence completes. Alternatively, for
+     * API level 23 or newer devices, the CANCEL can be used to unlock the camera device
+     * internally locked AE if the application doesn't submit a still capture request after
+     * the AE precapture trigger. Note that, the CANCEL was added in API level 23, and must not
+     * be used in devices that have earlier API levels.</p>
+     * <p>The exact effect of auto-exposure (AE) precapture trigger
+     * depends on the current AE mode and state; see
+     * ACAMERA_CONTROL_AE_STATE for AE precapture state transition
+     * details.</p>
+     * <p>On LEGACY-level devices, the precapture trigger is not supported;
+     * capturing a high-resolution JPEG image will automatically trigger a
+     * precapture sequence before the high-resolution capture, including
+     * potentially firing a pre-capture flash.</p>
+     * <p>Using the precapture trigger and the auto-focus trigger ACAMERA_CONTROL_AF_TRIGGER
+     * simultaneously is allowed. However, since these triggers often require cooperation between
+     * the auto-focus and auto-exposure routines (for example, the may need to be enabled for a
+     * focus sweep), the camera device may delay acting on a later trigger until the previous
+     * trigger has been fully handled. This may lead to longer intervals between the trigger and
+     * changes to ACAMERA_CONTROL_AE_STATE indicating the start of the precapture sequence, for
+     * example.</p>
+     * <p>If both the precapture and the auto-focus trigger are activated on the same request, then
+     * the camera device will complete them in the optimal order for that device.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_LOCK
+     * @see ACAMERA_CONTROL_AE_STATE
+     * @see ACAMERA_CONTROL_AF_TRIGGER
+     * @see ACAMERA_CONTROL_CAPTURE_INTENT
+     */
+    ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER =                     // byte (acamera_metadata_enum_android_control_ae_precapture_trigger_t)
+            ACAMERA_CONTROL_START + 6,
+    /**
+     * <p>Whether auto-focus (AF) is currently enabled, and what
+     * mode it is set to.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_control_af_mode_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>Only effective if ACAMERA_CONTROL_MODE = AUTO and the lens is not fixed focus
+     * (i.e. <code>ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE &gt; 0</code>). Also note that
+     * when ACAMERA_CONTROL_AE_MODE is OFF, the behavior of AF is device
+     * dependent. It is recommended to lock AF by using ACAMERA_CONTROL_AF_TRIGGER before
+     * setting ACAMERA_CONTROL_AE_MODE to OFF, or set AF mode to OFF when AE is OFF.</p>
+     * <p>If the lens is controlled by the camera device auto-focus algorithm,
+     * the camera device will report the current AF status in ACAMERA_CONTROL_AF_STATE
+     * in result metadata.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_MODE
+     * @see ACAMERA_CONTROL_AF_STATE
+     * @see ACAMERA_CONTROL_AF_TRIGGER
+     * @see ACAMERA_CONTROL_MODE
+     * @see ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE
+     */
+    ACAMERA_CONTROL_AF_MODE =                                   // byte (acamera_metadata_enum_android_control_af_mode_t)
+            ACAMERA_CONTROL_START + 7,
+    /**
+     * <p>List of metering areas to use for auto-focus.</p>
+     *
+     * <p>Type: int32[5*area_count]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>Not available if android.control.maxRegionsAf is 0.
+     * Otherwise will always be present.</p>
+     * <p>The maximum number of focus areas supported by the device is determined by the value
+     * of android.control.maxRegionsAf.</p>
+     * <p>The data representation is int[5 * area_count].
+     * Every five elements represent a metering region of (xmin, ymin, xmax, ymax, weight).
+     * The rectangle is defined to be inclusive on xmin and ymin, but exclusive on xmax and
+     * ymax.</p>
+     * <p>The coordinate system is based on the active pixel array,
+     * with (0,0) being the top-left pixel in the active pixel array, and
+     * (ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.width - 1,
+     * ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.height - 1) being the
+     * bottom-right pixel in the active pixel array.</p>
+     * <p>The weight must be within <code>[0, 1000]</code>, and represents a weight
+     * for every pixel in the area. This means that a large metering area
+     * with the same weight as a smaller area will have more effect in
+     * the metering result. Metering areas can partially overlap and the
+     * camera device will add the weights in the overlap region.</p>
+     * <p>The weights are relative to weights of other metering regions, so if only one region
+     * is used, all non-zero weights will have the same effect. A region with 0 weight is
+     * ignored.</p>
+     * <p>If all regions have 0 weight, then no specific metering area needs to be used by the
+     * camera device.</p>
+     * <p>If the metering region is outside the used ACAMERA_SCALER_CROP_REGION returned in
+     * capture result metadata, the camera device will ignore the sections outside the crop
+     * region and output only the intersection rectangle as the metering region in the result
+     * metadata. If the region is entirely outside the crop region, it will be ignored and
+     * not reported in the result metadata.</p>
+     *
+     * @see ACAMERA_SCALER_CROP_REGION
+     * @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+     */
+    ACAMERA_CONTROL_AF_REGIONS =                                // int32[5*area_count]
+            ACAMERA_CONTROL_START + 8,
+    /**
+     * <p>Whether the camera device will trigger autofocus for this request.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_control_af_trigger_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>This entry is normally set to IDLE, or is not
+     * included at all in the request settings.</p>
+     * <p>When included and set to START, the camera device will trigger the
+     * autofocus algorithm. If autofocus is disabled, this trigger has no effect.</p>
+     * <p>When set to CANCEL, the camera device will cancel any active trigger,
+     * and return to its initial AF state.</p>
+     * <p>Generally, applications should set this entry to START or CANCEL for only a
+     * single capture, and then return it to IDLE (or not set at all). Specifying
+     * START for multiple captures in a row means restarting the AF operation over
+     * and over again.</p>
+     * <p>See ACAMERA_CONTROL_AF_STATE for what the trigger means for each AF mode.</p>
+     * <p>Using the autofocus trigger and the precapture trigger ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
+     * simultaneously is allowed. However, since these triggers often require cooperation between
+     * the auto-focus and auto-exposure routines (for example, the may need to be enabled for a
+     * focus sweep), the camera device may delay acting on a later trigger until the previous
+     * trigger has been fully handled. This may lead to longer intervals between the trigger and
+     * changes to ACAMERA_CONTROL_AF_STATE, for example.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
+     * @see ACAMERA_CONTROL_AF_STATE
+     */
+    ACAMERA_CONTROL_AF_TRIGGER =                                // byte (acamera_metadata_enum_android_control_af_trigger_t)
+            ACAMERA_CONTROL_START + 9,
+    /**
+     * <p>Whether auto-white balance (AWB) is currently locked to its
+     * latest calculated values.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_control_awb_lock_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>When set to <code>true</code> (ON), the AWB algorithm is locked to its latest parameters,
+     * and will not change color balance settings until the lock is set to <code>false</code> (OFF).</p>
+     * <p>Since the camera device has a pipeline of in-flight requests, the settings that
+     * get locked do not necessarily correspond to the settings that were present in the
+     * latest capture result received from the camera device, since additional captures
+     * and AWB updates may have occurred even before the result was sent out. If an
+     * application is switching between automatic and manual control and wishes to eliminate
+     * any flicker during the switch, the following procedure is recommended:</p>
+     * <ol>
+     * <li>Starting in auto-AWB mode:</li>
+     * <li>Lock AWB</li>
+     * <li>Wait for the first result to be output that has the AWB locked</li>
+     * <li>Copy AWB settings from that result into a request, set the request to manual AWB</li>
+     * <li>Submit the capture request, proceed to run manual AWB as desired.</li>
+     * </ol>
+     * <p>Note that AWB lock is only meaningful when
+     * ACAMERA_CONTROL_AWB_MODE is in the AUTO mode; in other modes,
+     * AWB is already fixed to a specific setting.</p>
+     * <p>Some LEGACY devices may not support ON; the value is then overridden to OFF.</p>
+     *
+     * @see ACAMERA_CONTROL_AWB_MODE
+     */
+    ACAMERA_CONTROL_AWB_LOCK =                                  // byte (acamera_metadata_enum_android_control_awb_lock_t)
+            ACAMERA_CONTROL_START + 10,
+    /**
+     * <p>Whether auto-white balance (AWB) is currently setting the color
+     * transform fields, and what its illumination target
+     * is.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_control_awb_mode_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>This control is only effective if ACAMERA_CONTROL_MODE is AUTO.</p>
+     * <p>When set to the ON mode, the camera device's auto-white balance
+     * routine is enabled, overriding the application's selected
+     * ACAMERA_COLOR_CORRECTION_TRANSFORM, ACAMERA_COLOR_CORRECTION_GAINS and
+     * ACAMERA_COLOR_CORRECTION_MODE. Note that when ACAMERA_CONTROL_AE_MODE
+     * is OFF, the behavior of AWB is device dependent. It is recommened to
+     * also set AWB mode to OFF or lock AWB by using ACAMERA_CONTROL_AWB_LOCK before
+     * setting AE mode to OFF.</p>
+     * <p>When set to the OFF mode, the camera device's auto-white balance
+     * routine is disabled. The application manually controls the white
+     * balance by ACAMERA_COLOR_CORRECTION_TRANSFORM, ACAMERA_COLOR_CORRECTION_GAINS
+     * and ACAMERA_COLOR_CORRECTION_MODE.</p>
+     * <p>When set to any other modes, the camera device's auto-white
+     * balance routine is disabled. The camera device uses each
+     * particular illumination target for white balance
+     * adjustment. The application's values for
+     * ACAMERA_COLOR_CORRECTION_TRANSFORM,
+     * ACAMERA_COLOR_CORRECTION_GAINS and
+     * ACAMERA_COLOR_CORRECTION_MODE are ignored.</p>
+     *
+     * @see ACAMERA_COLOR_CORRECTION_GAINS
+     * @see ACAMERA_COLOR_CORRECTION_MODE
+     * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+     * @see ACAMERA_CONTROL_AE_MODE
+     * @see ACAMERA_CONTROL_AWB_LOCK
+     * @see ACAMERA_CONTROL_MODE
+     */
+    ACAMERA_CONTROL_AWB_MODE =                                  // byte (acamera_metadata_enum_android_control_awb_mode_t)
+            ACAMERA_CONTROL_START + 11,
+    /**
+     * <p>List of metering areas to use for auto-white-balance illuminant
+     * estimation.</p>
+     *
+     * <p>Type: int32[5*area_count]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>Not available if android.control.maxRegionsAwb is 0.
+     * Otherwise will always be present.</p>
+     * <p>The maximum number of regions supported by the device is determined by the value
+     * of android.control.maxRegionsAwb.</p>
+     * <p>The data representation is int[5 * area_count].
+     * Every five elements represent a metering region of (xmin, ymin, xmax, ymax, weight).
+     * The rectangle is defined to be inclusive on xmin and ymin, but exclusive on xmax and
+     * ymax.</p>
+     * <p>The coordinate system is based on the active pixel array,
+     * with (0,0) being the top-left pixel in the active pixel array, and
+     * (ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.width - 1,
+     * ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.height - 1) being the
+     * bottom-right pixel in the active pixel array.</p>
+     * <p>The weight must range from 0 to 1000, and represents a weight
+     * for every pixel in the area. This means that a large metering area
+     * with the same weight as a smaller area will have more effect in
+     * the metering result. Metering areas can partially overlap and the
+     * camera device will add the weights in the overlap region.</p>
+     * <p>The weights are relative to weights of other white balance metering regions, so if
+     * only one region is used, all non-zero weights will have the same effect. A region with
+     * 0 weight is ignored.</p>
+     * <p>If all regions have 0 weight, then no specific metering area needs to be used by the
+     * camera device.</p>
+     * <p>If the metering region is outside the used ACAMERA_SCALER_CROP_REGION returned in
+     * capture result metadata, the camera device will ignore the sections outside the crop
+     * region and output only the intersection rectangle as the metering region in the result
+     * metadata.  If the region is entirely outside the crop region, it will be ignored and
+     * not reported in the result metadata.</p>
+     *
+     * @see ACAMERA_SCALER_CROP_REGION
+     * @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+     */
+    ACAMERA_CONTROL_AWB_REGIONS =                               // int32[5*area_count]
+            ACAMERA_CONTROL_START + 12,
+    /**
+     * <p>Information to the camera device 3A (auto-exposure,
+     * auto-focus, auto-white balance) routines about the purpose
+     * of this capture, to help the camera device to decide optimal 3A
+     * strategy.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_control_capture_intent_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>This control (except for MANUAL) is only effective if
+     * <code>ACAMERA_CONTROL_MODE != OFF</code> and any 3A routine is active.</p>
+     * <p>ZERO_SHUTTER_LAG will be supported if ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+     * contains PRIVATE_REPROCESSING or YUV_REPROCESSING. MANUAL will be supported if
+     * ACAMERA_REQUEST_AVAILABLE_CAPABILITIES contains MANUAL_SENSOR. Other intent values are
+     * always supported.</p>
+     *
+     * @see ACAMERA_CONTROL_MODE
+     * @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+     */
+    ACAMERA_CONTROL_CAPTURE_INTENT =                            // byte (acamera_metadata_enum_android_control_capture_intent_t)
+            ACAMERA_CONTROL_START + 13,
+    /**
+     * <p>A special color effect to apply.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_control_effect_mode_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>When this mode is set, a color effect will be applied
+     * to images produced by the camera device. The interpretation
+     * and implementation of these color effects is left to the
+     * implementor of the camera device, and should not be
+     * depended on to be consistent (or present) across all
+     * devices.</p>
+     */
+    ACAMERA_CONTROL_EFFECT_MODE =                               // byte (acamera_metadata_enum_android_control_effect_mode_t)
+            ACAMERA_CONTROL_START + 14,
+    /**
+     * <p>Overall mode of 3A (auto-exposure, auto-white-balance, auto-focus) control
+     * routines.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_control_mode_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>This is a top-level 3A control switch. When set to OFF, all 3A control
+     * by the camera device is disabled. The application must set the fields for
+     * capture parameters itself.</p>
+     * <p>When set to AUTO, the individual algorithm controls in
+     * ACAMERA_CONTROL_* are in effect, such as ACAMERA_CONTROL_AF_MODE.</p>
+     * <p>When set to USE_SCENE_MODE, the individual controls in
+     * ACAMERA_CONTROL_* are mostly disabled, and the camera device implements
+     * one of the scene mode settings (such as ACTION, SUNSET, or PARTY)
+     * as it wishes. The camera device scene mode 3A settings are provided by
+     * capture results {@link ACameraMetadata} from
+     * {@link ACameraCaptureSession_captureCallback_result}.</p>
+     * <p>When set to OFF_KEEP_STATE, it is similar to OFF mode, the only difference
+     * is that this frame will not be used by camera device background 3A statistics
+     * update, as if this frame is never captured. This mode can be used in the scenario
+     * where the application doesn't want a 3A manual control capture to affect
+     * the subsequent auto 3A capture results.</p>
+     *
+     * @see ACAMERA_CONTROL_AF_MODE
+     */
+    ACAMERA_CONTROL_MODE =                                      // byte (acamera_metadata_enum_android_control_mode_t)
+            ACAMERA_CONTROL_START + 15,
+    /**
+     * <p>Control for which scene mode is currently active.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_control_scene_mode_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>Scene modes are custom camera modes optimized for a certain set of conditions and
+     * capture settings.</p>
+     * <p>This is the mode that that is active when
+     * <code>ACAMERA_CONTROL_MODE == USE_SCENE_MODE</code>. Aside from FACE_PRIORITY, these modes will
+     * disable ACAMERA_CONTROL_AE_MODE, ACAMERA_CONTROL_AWB_MODE, and ACAMERA_CONTROL_AF_MODE
+     * while in use.</p>
+     * <p>The interpretation and implementation of these scene modes is left
+     * to the implementor of the camera device. Their behavior will not be
+     * consistent across all devices, and any given device may only implement
+     * a subset of these modes.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_MODE
+     * @see ACAMERA_CONTROL_AF_MODE
+     * @see ACAMERA_CONTROL_AWB_MODE
+     * @see ACAMERA_CONTROL_MODE
+     */
+    ACAMERA_CONTROL_SCENE_MODE =                                // byte (acamera_metadata_enum_android_control_scene_mode_t)
+            ACAMERA_CONTROL_START + 16,
+    /**
+     * <p>Whether video stabilization is
+     * active.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_control_video_stabilization_mode_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>Video stabilization automatically warps images from
+     * the camera in order to stabilize motion between consecutive frames.</p>
+     * <p>If enabled, video stabilization can modify the
+     * ACAMERA_SCALER_CROP_REGION to keep the video stream stabilized.</p>
+     * <p>Switching between different video stabilization modes may take several
+     * frames to initialize, the camera device will report the current mode
+     * in capture result metadata. For example, When "ON" mode is requested,
+     * the video stabilization modes in the first several capture results may
+     * still be "OFF", and it will become "ON" when the initialization is
+     * done.</p>
+     * <p>In addition, not all recording sizes or frame rates may be supported for
+     * stabilization by a device that reports stabilization support. It is guaranteed
+     * that an output targeting a MediaRecorder or MediaCodec will be stabilized if
+     * the recording resolution is less than or equal to 1920 x 1080 (width less than
+     * or equal to 1920, height less than or equal to 1080), and the recording
+     * frame rate is less than or equal to 30fps.  At other sizes, the CaptureResult
+     * ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE field will return
+     * OFF if the recording output is not stabilized, or if there are no output
+     * Surface types that can be stabilized.</p>
+     * <p>If a camera device supports both this mode and OIS
+     * (ACAMERA_LENS_OPTICAL_STABILIZATION_MODE), turning both modes on may
+     * produce undesirable interaction, so it is recommended not to enable
+     * both at the same time.</p>
+     *
+     * @see ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE
+     * @see ACAMERA_LENS_OPTICAL_STABILIZATION_MODE
+     * @see ACAMERA_SCALER_CROP_REGION
+     */
+    ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE =                  // byte (acamera_metadata_enum_android_control_video_stabilization_mode_t)
+            ACAMERA_CONTROL_START + 17,
+    /**
+     * <p>List of auto-exposure antibanding modes for ACAMERA_CONTROL_AE_ANTIBANDING_MODE that are
+     * supported by this camera device.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_ANTIBANDING_MODE
+     *
+     * <p>Type: byte[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>Not all of the auto-exposure anti-banding modes may be
+     * supported by a given camera device. This field lists the
+     * valid anti-banding modes that the application may request
+     * for this camera device with the
+     * ACAMERA_CONTROL_AE_ANTIBANDING_MODE control.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_ANTIBANDING_MODE
+     */
+    ACAMERA_CONTROL_AE_AVAILABLE_ANTIBANDING_MODES =            // byte[n]
+            ACAMERA_CONTROL_START + 18,
+    /**
+     * <p>List of auto-exposure modes for ACAMERA_CONTROL_AE_MODE that are supported by this camera
+     * device.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_MODE
+     *
+     * <p>Type: byte[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>Not all the auto-exposure modes may be supported by a
+     * given camera device, especially if no flash unit is
+     * available. This entry lists the valid modes for
+     * ACAMERA_CONTROL_AE_MODE for this camera device.</p>
+     * <p>All camera devices support ON, and all camera devices with flash
+     * units support ON_AUTO_FLASH and ON_ALWAYS_FLASH.</p>
+     * <p>FULL mode camera devices always support OFF mode,
+     * which enables application control of camera exposure time,
+     * sensitivity, and frame duration.</p>
+     * <p>LEGACY mode camera devices never support OFF mode.
+     * LIMITED mode devices support OFF if they support the MANUAL_SENSOR
+     * capability.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_MODE
+     */
+    ACAMERA_CONTROL_AE_AVAILABLE_MODES =                        // byte[n]
+            ACAMERA_CONTROL_START + 19,
+    /**
+     * <p>List of frame rate ranges for ACAMERA_CONTROL_AE_TARGET_FPS_RANGE supported by
+     * this camera device.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_TARGET_FPS_RANGE
+     *
+     * <p>Type: int32[2*n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>For devices at the LEGACY level or above:</p>
+     * <ul>
+     * <li>
+     * <p>For constant-framerate recording, for each normal
+     * <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html">CamcorderProfile</a>, that is, a
+     * <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html">CamcorderProfile</a> that has
+     * <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html#quality">quality</a>
+     * in the range [
+     * <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html#QUALITY_LOW">QUALITY_LOW</a>,
+     * <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html#QUALITY_2160P">QUALITY_2160P</a>],
+     * if the profile is supported by the device and has
+     * <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html#videoFrameRate">videoFrameRate</a>
+     * <code>x</code>, this list will always include (<code>x</code>,<code>x</code>).</p>
+     * </li>
+     * <li>
+     * <p>Also, a camera device must either not support any
+     * <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html">CamcorderProfile</a>,
+     * or support at least one
+     * normal <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html">CamcorderProfile</a>
+     * that has
+     * <a href="https://developer.android.com/reference/android/media/CamcorderProfile.html#videoFrameRate">videoFrameRate</a> <code>x</code> &gt;= 24.</p>
+     * </li>
+     * </ul>
+     * <p>For devices at the LIMITED level or above:</p>
+     * <ul>
+     * <li>For YUV_420_888 burst capture use case, this list will always include (<code>min</code>, <code>max</code>)
+     * and (<code>max</code>, <code>max</code>) where <code>min</code> &lt;= 15 and <code>max</code> = the maximum output frame rate of the
+     * maximum YUV_420_888 output size.</li>
+     * </ul>
+     */
+    ACAMERA_CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES =            // int32[2*n]
+            ACAMERA_CONTROL_START + 20,
+    /**
+     * <p>Maximum and minimum exposure compensation values for
+     * ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION, in counts of ACAMERA_CONTROL_AE_COMPENSATION_STEP,
+     * that are supported by this camera device.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_COMPENSATION_STEP
+     * @see ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION
+     *
+     * <p>Type: int32[2]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     */
+    ACAMERA_CONTROL_AE_COMPENSATION_RANGE =                     // int32[2]
+            ACAMERA_CONTROL_START + 21,
+    /**
+     * <p>Smallest step by which the exposure compensation
+     * can be changed.</p>
+     *
+     * <p>Type: rational</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>This is the unit for ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION. For example, if this key has
+     * a value of <code>1/2</code>, then a setting of <code>-2</code> for ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION means
+     * that the target EV offset for the auto-exposure routine is -1 EV.</p>
+     * <p>One unit of EV compensation changes the brightness of the captured image by a factor
+     * of two. +1 EV doubles the image brightness, while -1 EV halves the image brightness.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION
+     */
+    ACAMERA_CONTROL_AE_COMPENSATION_STEP =                      // rational
+            ACAMERA_CONTROL_START + 22,
+    /**
+     * <p>List of auto-focus (AF) modes for ACAMERA_CONTROL_AF_MODE that are
+     * supported by this camera device.</p>
+     *
+     * @see ACAMERA_CONTROL_AF_MODE
+     *
+     * <p>Type: byte[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>Not all the auto-focus modes may be supported by a
+     * given camera device. This entry lists the valid modes for
+     * ACAMERA_CONTROL_AF_MODE for this camera device.</p>
+     * <p>All LIMITED and FULL mode camera devices will support OFF mode, and all
+     * camera devices with adjustable focuser units
+     * (<code>ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE &gt; 0</code>) will support AUTO mode.</p>
+     * <p>LEGACY devices will support OFF mode only if they support
+     * focusing to infinity (by also setting ACAMERA_LENS_FOCUS_DISTANCE to
+     * <code>0.0f</code>).</p>
+     *
+     * @see ACAMERA_CONTROL_AF_MODE
+     * @see ACAMERA_LENS_FOCUS_DISTANCE
+     * @see ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE
+     */
+    ACAMERA_CONTROL_AF_AVAILABLE_MODES =                        // byte[n]
+            ACAMERA_CONTROL_START + 23,
+    /**
+     * <p>List of color effects for ACAMERA_CONTROL_EFFECT_MODE that are supported by this camera
+     * device.</p>
+     *
+     * @see ACAMERA_CONTROL_EFFECT_MODE
+     *
+     * <p>Type: byte[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>This list contains the color effect modes that can be applied to
+     * images produced by the camera device.
+     * Implementations are not expected to be consistent across all devices.
+     * If no color effect modes are available for a device, this will only list
+     * OFF.</p>
+     * <p>A color effect will only be applied if
+     * ACAMERA_CONTROL_MODE != OFF.  OFF is always included in this list.</p>
+     * <p>This control has no effect on the operation of other control routines such
+     * as auto-exposure, white balance, or focus.</p>
+     *
+     * @see ACAMERA_CONTROL_MODE
+     */
+    ACAMERA_CONTROL_AVAILABLE_EFFECTS =                         // byte[n]
+            ACAMERA_CONTROL_START + 24,
+    /**
+     * <p>List of scene modes for ACAMERA_CONTROL_SCENE_MODE that are supported by this camera
+     * device.</p>
+     *
+     * @see ACAMERA_CONTROL_SCENE_MODE
+     *
+     * <p>Type: byte[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>This list contains scene modes that can be set for the camera device.
+     * Only scene modes that have been fully implemented for the
+     * camera device may be included here. Implementations are not expected
+     * to be consistent across all devices.</p>
+     * <p>If no scene modes are supported by the camera device, this
+     * will be set to DISABLED. Otherwise DISABLED will not be listed.</p>
+     * <p>FACE_PRIORITY is always listed if face detection is
+     * supported (i.e.<code>ACAMERA_STATISTICS_INFO_MAX_FACE_COUNT &gt;
+     * 0</code>).</p>
+     *
+     * @see ACAMERA_STATISTICS_INFO_MAX_FACE_COUNT
+     */
+    ACAMERA_CONTROL_AVAILABLE_SCENE_MODES =                     // byte[n]
+            ACAMERA_CONTROL_START + 25,
+    /**
+     * <p>List of video stabilization modes for ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE
+     * that are supported by this camera device.</p>
+     *
+     * @see ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE
+     *
+     * <p>Type: byte[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>OFF will always be listed.</p>
+     */
+    ACAMERA_CONTROL_AVAILABLE_VIDEO_STABILIZATION_MODES =       // byte[n]
+            ACAMERA_CONTROL_START + 26,
+    /**
+     * <p>List of auto-white-balance modes for ACAMERA_CONTROL_AWB_MODE that are supported by this
+     * camera device.</p>
+     *
+     * @see ACAMERA_CONTROL_AWB_MODE
+     *
+     * <p>Type: byte[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>Not all the auto-white-balance modes may be supported by a
+     * given camera device. This entry lists the valid modes for
+     * ACAMERA_CONTROL_AWB_MODE for this camera device.</p>
+     * <p>All camera devices will support ON mode.</p>
+     * <p>Camera devices that support the MANUAL_POST_PROCESSING capability will always support OFF
+     * mode, which enables application control of white balance, by using
+     * ACAMERA_COLOR_CORRECTION_TRANSFORM and ACAMERA_COLOR_CORRECTION_GAINS(ACAMERA_COLOR_CORRECTION_MODE must be set to TRANSFORM_MATRIX). This includes all FULL
+     * mode camera devices.</p>
+     *
+     * @see ACAMERA_COLOR_CORRECTION_GAINS
+     * @see ACAMERA_COLOR_CORRECTION_MODE
+     * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+     * @see ACAMERA_CONTROL_AWB_MODE
+     */
+    ACAMERA_CONTROL_AWB_AVAILABLE_MODES =                       // byte[n]
+            ACAMERA_CONTROL_START + 27,
+    /**
+     * <p>List of the maximum number of regions that can be used for metering in
+     * auto-exposure (AE), auto-white balance (AWB), and auto-focus (AF);
+     * this corresponds to the the maximum number of elements in
+     * ACAMERA_CONTROL_AE_REGIONS, ACAMERA_CONTROL_AWB_REGIONS,
+     * and ACAMERA_CONTROL_AF_REGIONS.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_REGIONS
+     * @see ACAMERA_CONTROL_AF_REGIONS
+     * @see ACAMERA_CONTROL_AWB_REGIONS
+     *
+     * <p>Type: int32[3]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     */
+    ACAMERA_CONTROL_MAX_REGIONS =                               // int32[3]
+            ACAMERA_CONTROL_START + 28,
+    /**
+     * <p>Current state of the auto-exposure (AE) algorithm.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_control_ae_state_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>Switching between or enabling AE modes (ACAMERA_CONTROL_AE_MODE) always
+     * resets the AE state to INACTIVE. Similarly, switching between ACAMERA_CONTROL_MODE,
+     * or ACAMERA_CONTROL_SCENE_MODE if <code>ACAMERA_CONTROL_MODE == USE_SCENE_MODE</code> resets all
+     * the algorithm states to INACTIVE.</p>
+     * <p>The camera device can do several state transitions between two results, if it is
+     * allowed by the state transition table. For example: INACTIVE may never actually be
+     * seen in a result.</p>
+     * <p>The state in the result is the state for this image (in sync with this image): if
+     * AE state becomes CONVERGED, then the image data associated with this result should
+     * be good to use.</p>
+     * <p>Below are state transition tables for different AE modes.</p>
+     * <p>State       | Transition Cause | New State | Notes
+     * :------------:|:----------------:|:---------:|:-----------------------:
+     * INACTIVE      |                  | INACTIVE  | Camera device auto exposure algorithm is disabled</p>
+     * <p>When ACAMERA_CONTROL_AE_MODE is AE_MODE_ON_*:</p>
+     * <p>State        | Transition Cause                             | New State      | Notes
+     * :-------------:|:--------------------------------------------:|:--------------:|:-----------------:
+     * INACTIVE       | Camera device initiates AE scan              | SEARCHING      | Values changing
+     * INACTIVE       | ACAMERA_CONTROL_AE_LOCK is ON                 | LOCKED         | Values locked
+     * SEARCHING      | Camera device finishes AE scan               | CONVERGED      | Good values, not changing
+     * SEARCHING      | Camera device finishes AE scan               | FLASH_REQUIRED | Converged but too dark w/o flash
+     * SEARCHING      | ACAMERA_CONTROL_AE_LOCK is ON                 | LOCKED         | Values locked
+     * CONVERGED      | Camera device initiates AE scan              | SEARCHING      | Values changing
+     * CONVERGED      | ACAMERA_CONTROL_AE_LOCK is ON                 | LOCKED         | Values locked
+     * FLASH_REQUIRED | Camera device initiates AE scan              | SEARCHING      | Values changing
+     * FLASH_REQUIRED | ACAMERA_CONTROL_AE_LOCK is ON                 | LOCKED         | Values locked
+     * LOCKED         | ACAMERA_CONTROL_AE_LOCK is OFF                | SEARCHING      | Values not good after unlock
+     * LOCKED         | ACAMERA_CONTROL_AE_LOCK is OFF                | CONVERGED      | Values good after unlock
+     * LOCKED         | ACAMERA_CONTROL_AE_LOCK is OFF                | FLASH_REQUIRED | Exposure good, but too dark
+     * PRECAPTURE     | Sequence done. ACAMERA_CONTROL_AE_LOCK is OFF | CONVERGED      | Ready for high-quality capture
+     * PRECAPTURE     | Sequence done. ACAMERA_CONTROL_AE_LOCK is ON  | LOCKED         | Ready for high-quality capture
+     * LOCKED         | aeLock is ON and aePrecaptureTrigger is START | LOCKED        | Precapture trigger is ignored when AE is already locked
+     * LOCKED         | aeLock is ON and aePrecaptureTrigger is CANCEL| LOCKED        | Precapture trigger is ignored when AE is already locked
+     * Any state (excluding LOCKED) | ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is START | PRECAPTURE     | Start AE precapture metering sequence
+     * Any state (excluding LOCKED) | ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is CANCEL| INACTIVE       | Currently active precapture metering sequence is canceled</p>
+     * <p>For the above table, the camera device may skip reporting any state changes that happen
+     * without application intervention (i.e. mode switch, trigger, locking). Any state that
+     * can be skipped in that manner is called a transient state.</p>
+     * <p>For example, for above AE modes (AE_MODE_ON_*), in addition to the state transitions
+     * listed in above table, it is also legal for the camera device to skip one or more
+     * transient states between two results. See below table for examples:</p>
+     * <p>State        | Transition Cause                                            | New State      | Notes
+     * :-------------:|:-----------------------------------------------------------:|:--------------:|:-----------------:
+     * INACTIVE       | Camera device finished AE scan                              | CONVERGED      | Values are already good, transient states are skipped by camera device.
+     * Any state (excluding LOCKED) | ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is START, sequence done | FLASH_REQUIRED | Converged but too dark w/o flash after a precapture sequence, transient states are skipped by camera device.
+     * Any state (excluding LOCKED) | ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is START, sequence done | CONVERGED      | Converged after a precapture sequence, transient states are skipped by camera device.
+     * Any state (excluding LOCKED) | ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is CANCEL, converged    | FLASH_REQUIRED | Converged but too dark w/o flash after a precapture sequence is canceled, transient states are skipped by camera device.
+     * Any state (excluding LOCKED) | ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is CANCEL, converged    | CONVERGED      | Converged after a precapture sequenceis canceled, transient states are skipped by camera device.
+     * CONVERGED      | Camera device finished AE scan                              | FLASH_REQUIRED | Converged but too dark w/o flash after a new scan, transient states are skipped by camera device.
+     * FLASH_REQUIRED | Camera device finished AE scan                              | CONVERGED      | Converged after a new scan, transient states are skipped by camera device.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_LOCK
+     * @see ACAMERA_CONTROL_AE_MODE
+     * @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
+     * @see ACAMERA_CONTROL_MODE
+     * @see ACAMERA_CONTROL_SCENE_MODE
+     */
+    ACAMERA_CONTROL_AE_STATE =                                  // byte (acamera_metadata_enum_android_control_ae_state_t)
+            ACAMERA_CONTROL_START + 31,
+    /**
+     * <p>Current state of auto-focus (AF) algorithm.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_control_af_state_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>Switching between or enabling AF modes (ACAMERA_CONTROL_AF_MODE) always
+     * resets the AF state to INACTIVE. Similarly, switching between ACAMERA_CONTROL_MODE,
+     * or ACAMERA_CONTROL_SCENE_MODE if <code>ACAMERA_CONTROL_MODE == USE_SCENE_MODE</code> resets all
+     * the algorithm states to INACTIVE.</p>
+     * <p>The camera device can do several state transitions between two results, if it is
+     * allowed by the state transition table. For example: INACTIVE may never actually be
+     * seen in a result.</p>
+     * <p>The state in the result is the state for this image (in sync with this image): if
+     * AF state becomes FOCUSED, then the image data associated with this result should
+     * be sharp.</p>
+     * <p>Below are state transition tables for different AF modes.</p>
+     * <p>When ACAMERA_CONTROL_AF_MODE is AF_MODE_OFF or AF_MODE_EDOF:</p>
+     * <p>State       | Transition Cause | New State | Notes
+     * :------------:|:----------------:|:---------:|:-----------:
+     * INACTIVE      |                  | INACTIVE  | Never changes</p>
+     * <p>When ACAMERA_CONTROL_AF_MODE is AF_MODE_AUTO or AF_MODE_MACRO:</p>
+     * <p>State            | Transition Cause | New State          | Notes
+     * :-----------------:|:----------------:|:------------------:|:--------------:
+     * INACTIVE           | AF_TRIGGER       | ACTIVE_SCAN        | Start AF sweep, Lens now moving
+     * ACTIVE_SCAN        | AF sweep done    | FOCUSED_LOCKED     | Focused, Lens now locked
+     * ACTIVE_SCAN        | AF sweep done    | NOT_FOCUSED_LOCKED | Not focused, Lens now locked
+     * ACTIVE_SCAN        | AF_CANCEL        | INACTIVE           | Cancel/reset AF, Lens now locked
+     * FOCUSED_LOCKED     | AF_CANCEL        | INACTIVE           | Cancel/reset AF
+     * FOCUSED_LOCKED     | AF_TRIGGER       | ACTIVE_SCAN        | Start new sweep, Lens now moving
+     * NOT_FOCUSED_LOCKED | AF_CANCEL        | INACTIVE           | Cancel/reset AF
+     * NOT_FOCUSED_LOCKED | AF_TRIGGER       | ACTIVE_SCAN        | Start new sweep, Lens now moving
+     * Any state          | Mode change      | INACTIVE           |</p>
+     * <p>For the above table, the camera device may skip reporting any state changes that happen
+     * without application intervention (i.e. mode switch, trigger, locking). Any state that
+     * can be skipped in that manner is called a transient state.</p>
+     * <p>For example, for these AF modes (AF_MODE_AUTO and AF_MODE_MACRO), in addition to the
+     * state transitions listed in above table, it is also legal for the camera device to skip
+     * one or more transient states between two results. See below table for examples:</p>
+     * <p>State            | Transition Cause | New State          | Notes
+     * :-----------------:|:----------------:|:------------------:|:--------------:
+     * INACTIVE           | AF_TRIGGER       | FOCUSED_LOCKED     | Focus is already good or good after a scan, lens is now locked.
+     * INACTIVE           | AF_TRIGGER       | NOT_FOCUSED_LOCKED | Focus failed after a scan, lens is now locked.
+     * FOCUSED_LOCKED     | AF_TRIGGER       | FOCUSED_LOCKED     | Focus is already good or good after a scan, lens is now locked.
+     * NOT_FOCUSED_LOCKED | AF_TRIGGER       | FOCUSED_LOCKED     | Focus is good after a scan, lens is not locked.</p>
+     * <p>When ACAMERA_CONTROL_AF_MODE is AF_MODE_CONTINUOUS_VIDEO:</p>
+     * <p>State            | Transition Cause                    | New State          | Notes
+     * :-----------------:|:-----------------------------------:|:------------------:|:--------------:
+     * INACTIVE           | Camera device initiates new scan    | PASSIVE_SCAN       | Start AF scan, Lens now moving
+     * INACTIVE           | AF_TRIGGER                          | NOT_FOCUSED_LOCKED | AF state query, Lens now locked
+     * PASSIVE_SCAN       | Camera device completes current scan| PASSIVE_FOCUSED    | End AF scan, Lens now locked
+     * PASSIVE_SCAN       | Camera device fails current scan    | PASSIVE_UNFOCUSED  | End AF scan, Lens now locked
+     * PASSIVE_SCAN       | AF_TRIGGER                          | FOCUSED_LOCKED     | Immediate transition, if focus is good. Lens now locked
+     * PASSIVE_SCAN       | AF_TRIGGER                          | NOT_FOCUSED_LOCKED | Immediate transition, if focus is bad. Lens now locked
+     * PASSIVE_SCAN       | AF_CANCEL                           | INACTIVE           | Reset lens position, Lens now locked
+     * PASSIVE_FOCUSED    | Camera device initiates new scan    | PASSIVE_SCAN       | Start AF scan, Lens now moving
+     * PASSIVE_UNFOCUSED  | Camera device initiates new scan    | PASSIVE_SCAN       | Start AF scan, Lens now moving
+     * PASSIVE_FOCUSED    | AF_TRIGGER                          | FOCUSED_LOCKED     | Immediate transition, lens now locked
+     * PASSIVE_UNFOCUSED  | AF_TRIGGER                          | NOT_FOCUSED_LOCKED | Immediate transition, lens now locked
+     * FOCUSED_LOCKED     | AF_TRIGGER                          | FOCUSED_LOCKED     | No effect
+     * FOCUSED_LOCKED     | AF_CANCEL                           | INACTIVE           | Restart AF scan
+     * NOT_FOCUSED_LOCKED | AF_TRIGGER                          | NOT_FOCUSED_LOCKED | No effect
+     * NOT_FOCUSED_LOCKED | AF_CANCEL                           | INACTIVE           | Restart AF scan</p>
+     * <p>When ACAMERA_CONTROL_AF_MODE is AF_MODE_CONTINUOUS_PICTURE:</p>
+     * <p>State            | Transition Cause                     | New State          | Notes
+     * :-----------------:|:------------------------------------:|:------------------:|:--------------:
+     * INACTIVE           | Camera device initiates new scan     | PASSIVE_SCAN       | Start AF scan, Lens now moving
+     * INACTIVE           | AF_TRIGGER                           | NOT_FOCUSED_LOCKED | AF state query, Lens now locked
+     * PASSIVE_SCAN       | Camera device completes current scan | PASSIVE_FOCUSED    | End AF scan, Lens now locked
+     * PASSIVE_SCAN       | Camera device fails current scan     | PASSIVE_UNFOCUSED  | End AF scan, Lens now locked
+     * PASSIVE_SCAN       | AF_TRIGGER                           | FOCUSED_LOCKED     | Eventual transition once the focus is good. Lens now locked
+     * PASSIVE_SCAN       | AF_TRIGGER                           | NOT_FOCUSED_LOCKED | Eventual transition if cannot find focus. Lens now locked
+     * PASSIVE_SCAN       | AF_CANCEL                            | INACTIVE           | Reset lens position, Lens now locked
+     * PASSIVE_FOCUSED    | Camera device initiates new scan     | PASSIVE_SCAN       | Start AF scan, Lens now moving
+     * PASSIVE_UNFOCUSED  | Camera device initiates new scan     | PASSIVE_SCAN       | Start AF scan, Lens now moving
+     * PASSIVE_FOCUSED    | AF_TRIGGER                           | FOCUSED_LOCKED     | Immediate trans. Lens now locked
+     * PASSIVE_UNFOCUSED  | AF_TRIGGER                           | NOT_FOCUSED_LOCKED | Immediate trans. Lens now locked
+     * FOCUSED_LOCKED     | AF_TRIGGER                           | FOCUSED_LOCKED     | No effect
+     * FOCUSED_LOCKED     | AF_CANCEL                            | INACTIVE           | Restart AF scan
+     * NOT_FOCUSED_LOCKED | AF_TRIGGER                           | NOT_FOCUSED_LOCKED | No effect
+     * NOT_FOCUSED_LOCKED | AF_CANCEL                            | INACTIVE           | Restart AF scan</p>
+     * <p>When switch between AF_MODE_CONTINUOUS_* (CAF modes) and AF_MODE_AUTO/AF_MODE_MACRO
+     * (AUTO modes), the initial INACTIVE or PASSIVE_SCAN states may be skipped by the
+     * camera device. When a trigger is included in a mode switch request, the trigger
+     * will be evaluated in the context of the new mode in the request.
+     * See below table for examples:</p>
+     * <p>State      | Transition Cause                       | New State                                | Notes
+     * :-----------:|:--------------------------------------:|:----------------------------------------:|:--------------:
+     * any state    | CAF--&gt;AUTO mode switch                 | INACTIVE                                 | Mode switch without trigger, initial state must be INACTIVE
+     * any state    | CAF--&gt;AUTO mode switch with AF_TRIGGER | trigger-reachable states from INACTIVE   | Mode switch with trigger, INACTIVE is skipped
+     * any state    | AUTO--&gt;CAF mode switch                 | passively reachable states from INACTIVE | Mode switch without trigger, passive transient state is skipped</p>
+     *
+     * @see ACAMERA_CONTROL_AF_MODE
+     * @see ACAMERA_CONTROL_MODE
+     * @see ACAMERA_CONTROL_SCENE_MODE
+     */
+    ACAMERA_CONTROL_AF_STATE =                                  // byte (acamera_metadata_enum_android_control_af_state_t)
+            ACAMERA_CONTROL_START + 32,
+    /**
+     * <p>Current state of auto-white balance (AWB) algorithm.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_control_awb_state_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>Switching between or enabling AWB modes (ACAMERA_CONTROL_AWB_MODE) always
+     * resets the AWB state to INACTIVE. Similarly, switching between ACAMERA_CONTROL_MODE,
+     * or ACAMERA_CONTROL_SCENE_MODE if <code>ACAMERA_CONTROL_MODE == USE_SCENE_MODE</code> resets all
+     * the algorithm states to INACTIVE.</p>
+     * <p>The camera device can do several state transitions between two results, if it is
+     * allowed by the state transition table. So INACTIVE may never actually be seen in
+     * a result.</p>
+     * <p>The state in the result is the state for this image (in sync with this image): if
+     * AWB state becomes CONVERGED, then the image data associated with this result should
+     * be good to use.</p>
+     * <p>Below are state transition tables for different AWB modes.</p>
+     * <p>When <code>ACAMERA_CONTROL_AWB_MODE != AWB_MODE_AUTO</code>:</p>
+     * <p>State       | Transition Cause | New State | Notes
+     * :------------:|:----------------:|:---------:|:-----------------------:
+     * INACTIVE      |                  |INACTIVE   |Camera device auto white balance algorithm is disabled</p>
+     * <p>When ACAMERA_CONTROL_AWB_MODE is AWB_MODE_AUTO:</p>
+     * <p>State        | Transition Cause                 | New State     | Notes
+     * :-------------:|:--------------------------------:|:-------------:|:-----------------:
+     * INACTIVE       | Camera device initiates AWB scan | SEARCHING     | Values changing
+     * INACTIVE       | ACAMERA_CONTROL_AWB_LOCK is ON    | LOCKED        | Values locked
+     * SEARCHING      | Camera device finishes AWB scan  | CONVERGED     | Good values, not changing
+     * SEARCHING      | ACAMERA_CONTROL_AWB_LOCK is ON    | LOCKED        | Values locked
+     * CONVERGED      | Camera device initiates AWB scan | SEARCHING     | Values changing
+     * CONVERGED      | ACAMERA_CONTROL_AWB_LOCK is ON    | LOCKED        | Values locked
+     * LOCKED         | ACAMERA_CONTROL_AWB_LOCK is OFF   | SEARCHING     | Values not good after unlock</p>
+     * <p>For the above table, the camera device may skip reporting any state changes that happen
+     * without application intervention (i.e. mode switch, trigger, locking). Any state that
+     * can be skipped in that manner is called a transient state.</p>
+     * <p>For example, for this AWB mode (AWB_MODE_AUTO), in addition to the state transitions
+     * listed in above table, it is also legal for the camera device to skip one or more
+     * transient states between two results. See below table for examples:</p>
+     * <p>State        | Transition Cause                 | New State     | Notes
+     * :-------------:|:--------------------------------:|:-------------:|:-----------------:
+     * INACTIVE       | Camera device finished AWB scan  | CONVERGED     | Values are already good, transient states are skipped by camera device.
+     * LOCKED         | ACAMERA_CONTROL_AWB_LOCK is OFF   | CONVERGED     | Values good after unlock, transient states are skipped by camera device.</p>
+     *
+     * @see ACAMERA_CONTROL_AWB_LOCK
+     * @see ACAMERA_CONTROL_AWB_MODE
+     * @see ACAMERA_CONTROL_MODE
+     * @see ACAMERA_CONTROL_SCENE_MODE
+     */
+    ACAMERA_CONTROL_AWB_STATE =                                 // byte (acamera_metadata_enum_android_control_awb_state_t)
+            ACAMERA_CONTROL_START + 34,
+    /**
+     * <p>Whether the camera device supports ACAMERA_CONTROL_AE_LOCK</p>
+     *
+     * @see ACAMERA_CONTROL_AE_LOCK
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_control_ae_lock_available_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>Devices with MANUAL_SENSOR capability or BURST_CAPTURE capability will always
+     * list <code>true</code>. This includes FULL devices.</p>
+     */
+    ACAMERA_CONTROL_AE_LOCK_AVAILABLE =                         // byte (acamera_metadata_enum_android_control_ae_lock_available_t)
+            ACAMERA_CONTROL_START + 36,
+    /**
+     * <p>Whether the camera device supports ACAMERA_CONTROL_AWB_LOCK</p>
+     *
+     * @see ACAMERA_CONTROL_AWB_LOCK
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_control_awb_lock_available_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>Devices with MANUAL_POST_PROCESSING capability or BURST_CAPTURE capability will
+     * always list <code>true</code>. This includes FULL devices.</p>
+     */
+    ACAMERA_CONTROL_AWB_LOCK_AVAILABLE =                        // byte (acamera_metadata_enum_android_control_awb_lock_available_t)
+            ACAMERA_CONTROL_START + 37,
+    /**
+     * <p>List of control modes for ACAMERA_CONTROL_MODE that are supported by this camera
+     * device.</p>
+     *
+     * @see ACAMERA_CONTROL_MODE
+     *
+     * <p>Type: byte[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>This list contains control modes that can be set for the camera device.
+     * LEGACY mode devices will always support AUTO mode. LIMITED and FULL
+     * devices will always support OFF, AUTO modes.</p>
+     */
+    ACAMERA_CONTROL_AVAILABLE_MODES =                           // byte[n]
+            ACAMERA_CONTROL_START + 38,
+    /**
+     * <p>Range of boosts for ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST supported
+     * by this camera device.</p>
+     *
+     * @see ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST
+     *
+     * <p>Type: int32[2]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>Devices support post RAW sensitivity boost  will advertise
+     * ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST key for controling
+     * post RAW sensitivity boost.</p>
+     * <p>This key will be <code>null</code> for devices that do not support any RAW format
+     * outputs. For devices that do support RAW format outputs, this key will always
+     * present, and if a device does not support post RAW sensitivity boost, it will
+     * list <code>(100, 100)</code> in this key.</p>
+     *
+     * @see ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST
+     */
+    ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST_RANGE =          // int32[2]
+            ACAMERA_CONTROL_START + 39,
+    /**
+     * <p>The amount of additional sensitivity boost applied to output images
+     * after RAW sensor data is captured.</p>
+     *
+     * <p>Type: int32</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>Some camera devices support additional digital sensitivity boosting in the
+     * camera processing pipeline after sensor RAW image is captured.
+     * Such a boost will be applied to YUV/JPEG format output images but will not
+     * have effect on RAW output formats like RAW_SENSOR, RAW10, RAW12 or RAW_OPAQUE.</p>
+     * <p>This key will be <code>null</code> for devices that do not support any RAW format
+     * outputs. For devices that do support RAW format outputs, this key will always
+     * present, and if a device does not support post RAW sensitivity boost, it will
+     * list <code>100</code> in this key.</p>
+     * <p>If the camera device cannot apply the exact boost requested, it will reduce the
+     * boost to the nearest supported value.
+     * The final boost value used will be available in the output capture result.</p>
+     * <p>For devices that support post RAW sensitivity boost, the YUV/JPEG output images
+     * of such device will have the total sensitivity of
+     * <code>ACAMERA_SENSOR_SENSITIVITY * ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST / 100</code>
+     * The sensitivity of RAW format images will always be <code>ACAMERA_SENSOR_SENSITIVITY</code></p>
+     * <p>This control is only effective if ACAMERA_CONTROL_AE_MODE or ACAMERA_CONTROL_MODE is set to
+     * OFF; otherwise the auto-exposure algorithm will override this value.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_MODE
+     * @see ACAMERA_CONTROL_MODE
+     * @see ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST
+     * @see ACAMERA_SENSOR_SENSITIVITY
+     */
+    ACAMERA_CONTROL_POST_RAW_SENSITIVITY_BOOST =                // int32
+            ACAMERA_CONTROL_START + 40,
+    /**
+     * <p>Allow camera device to enable zero-shutter-lag mode for requests with
+     * ACAMERA_CONTROL_CAPTURE_INTENT == STILL_CAPTURE.</p>
+     *
+     * @see ACAMERA_CONTROL_CAPTURE_INTENT
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_control_enable_zsl_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>If enableZsl is <code>true</code>, the camera device may enable zero-shutter-lag mode for requests with
+     * STILL_CAPTURE capture intent. The camera device may use images captured in the past to
+     * produce output images for a zero-shutter-lag request. The result metadata including the
+     * ACAMERA_SENSOR_TIMESTAMP reflects the source frames used to produce output images.
+     * Therefore, the contents of the output images and the result metadata may be out of order
+     * compared to previous regular requests. enableZsl does not affect requests with other
+     * capture intents.</p>
+     * <p>For example, when requests are submitted in the following order:
+     *   Request A: enableZsl is <code>true</code>, ACAMERA_CONTROL_CAPTURE_INTENT is PREVIEW
+     *   Request B: enableZsl is <code>true</code>, ACAMERA_CONTROL_CAPTURE_INTENT is STILL_CAPTURE</p>
+     * <p>The output images for request B may have contents captured before the output images for
+     * request A, and the result metadata for request B may be older than the result metadata for
+     * request A.</p>
+     * <p>Note that when enableZsl is <code>true</code>, it is not guaranteed to get output images captured in the
+     * past for requests with STILL_CAPTURE capture intent.</p>
+     * <p>For applications targeting SDK versions O and newer, the value of enableZsl in
+     * TEMPLATE_STILL_CAPTURE template may be <code>true</code>. The value in other templates is always
+     * <code>false</code> if present.</p>
+     * <p>For applications targeting SDK versions older than O, the value of enableZsl in all
+     * capture templates is always <code>false</code> if present.</p>
+     * <p>For application-operated ZSL, use CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG template.</p>
+     *
+     * @see ACAMERA_CONTROL_CAPTURE_INTENT
+     * @see ACAMERA_SENSOR_TIMESTAMP
+     */
+    ACAMERA_CONTROL_ENABLE_ZSL =                                // byte (acamera_metadata_enum_android_control_enable_zsl_t)
+            ACAMERA_CONTROL_START + 41,
+    ACAMERA_CONTROL_END,
+
+    /**
+     * <p>Operation mode for edge
+     * enhancement.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_edge_mode_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>Edge enhancement improves sharpness and details in the captured image. OFF means
+     * no enhancement will be applied by the camera device.</p>
+     * <p>FAST/HIGH_QUALITY both mean camera device determined enhancement
+     * will be applied. HIGH_QUALITY mode indicates that the
+     * camera device will use the highest-quality enhancement algorithms,
+     * even if it slows down capture rate. FAST means the camera device will
+     * not slow down capture rate when applying edge enhancement. FAST may be the same as OFF if
+     * edge enhancement will slow down capture rate. Every output stream will have a similar
+     * amount of enhancement applied.</p>
+     * <p>ZERO_SHUTTER_LAG is meant to be used by applications that maintain a continuous circular
+     * buffer of high-resolution images during preview and reprocess image(s) from that buffer
+     * into a final capture when triggered by the user. In this mode, the camera device applies
+     * edge enhancement to low-resolution streams (below maximum recording resolution) to
+     * maximize preview quality, but does not apply edge enhancement to high-resolution streams,
+     * since those will be reprocessed later if necessary.</p>
+     * <p>For YUV_REPROCESSING, these FAST/HIGH_QUALITY modes both mean that the camera
+     * device will apply FAST/HIGH_QUALITY YUV-domain edge enhancement, respectively.
+     * The camera device may adjust its internal edge enhancement parameters for best
+     * image quality based on the android.reprocess.effectiveExposureFactor, if it is set.</p>
+     */
+    ACAMERA_EDGE_MODE =                                         // byte (acamera_metadata_enum_android_edge_mode_t)
+            ACAMERA_EDGE_START,
+    /**
+     * <p>List of edge enhancement modes for ACAMERA_EDGE_MODE that are supported by this camera
+     * device.</p>
+     *
+     * @see ACAMERA_EDGE_MODE
+     *
+     * <p>Type: byte[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>Full-capability camera devices must always support OFF; camera devices that support
+     * YUV_REPROCESSING or PRIVATE_REPROCESSING will list ZERO_SHUTTER_LAG; all devices will
+     * list FAST.</p>
+     */
+    ACAMERA_EDGE_AVAILABLE_EDGE_MODES =                         // byte[n]
+            ACAMERA_EDGE_START + 2,
+    ACAMERA_EDGE_END,
+
+    /**
+     * <p>The desired mode for for the camera device's flash control.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_flash_mode_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>This control is only effective when flash unit is available
+     * (<code>ACAMERA_FLASH_INFO_AVAILABLE == true</code>).</p>
+     * <p>When this control is used, the ACAMERA_CONTROL_AE_MODE must be set to ON or OFF.
+     * Otherwise, the camera device auto-exposure related flash control (ON_AUTO_FLASH,
+     * ON_ALWAYS_FLASH, or ON_AUTO_FLASH_REDEYE) will override this control.</p>
+     * <p>When set to OFF, the camera device will not fire flash for this capture.</p>
+     * <p>When set to SINGLE, the camera device will fire flash regardless of the camera
+     * device's auto-exposure routine's result. When used in still capture case, this
+     * control should be used along with auto-exposure (AE) precapture metering sequence
+     * (ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER), otherwise, the image may be incorrectly exposed.</p>
+     * <p>When set to TORCH, the flash will be on continuously. This mode can be used
+     * for use cases such as preview, auto-focus assist, still capture, or video recording.</p>
+     * <p>The flash status will be reported by ACAMERA_FLASH_STATE in the capture result metadata.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_MODE
+     * @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
+     * @see ACAMERA_FLASH_INFO_AVAILABLE
+     * @see ACAMERA_FLASH_STATE
+     */
+    ACAMERA_FLASH_MODE =                                        // byte (acamera_metadata_enum_android_flash_mode_t)
+            ACAMERA_FLASH_START + 2,
+    /**
+     * <p>Current state of the flash
+     * unit.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_flash_state_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>When the camera device doesn't have flash unit
+     * (i.e. <code>ACAMERA_FLASH_INFO_AVAILABLE == false</code>), this state will always be UNAVAILABLE.
+     * Other states indicate the current flash status.</p>
+     * <p>In certain conditions, this will be available on LEGACY devices:</p>
+     * <ul>
+     * <li>Flash-less cameras always return UNAVAILABLE.</li>
+     * <li>Using ACAMERA_CONTROL_AE_MODE <code>==</code> ON_ALWAYS_FLASH
+     *    will always return FIRED.</li>
+     * <li>Using ACAMERA_FLASH_MODE <code>==</code> TORCH
+     *    will always return FIRED.</li>
+     * </ul>
+     * <p>In all other conditions the state will not be available on
+     * LEGACY devices (i.e. it will be <code>null</code>).</p>
+     *
+     * @see ACAMERA_CONTROL_AE_MODE
+     * @see ACAMERA_FLASH_INFO_AVAILABLE
+     * @see ACAMERA_FLASH_MODE
+     */
+    ACAMERA_FLASH_STATE =                                       // byte (acamera_metadata_enum_android_flash_state_t)
+            ACAMERA_FLASH_START + 5,
+    ACAMERA_FLASH_END,
+
+    /**
+     * <p>Whether this camera device has a
+     * flash unit.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_flash_info_available_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>Will be <code>false</code> if no flash is available.</p>
+     * <p>If there is no flash unit, none of the flash controls do
+     * anything.</p>
+     */
+    ACAMERA_FLASH_INFO_AVAILABLE =                              // byte (acamera_metadata_enum_android_flash_info_available_t)
+            ACAMERA_FLASH_INFO_START,
+    ACAMERA_FLASH_INFO_END,
+
+    /**
+     * <p>Operational mode for hot pixel correction.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_hot_pixel_mode_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>Hotpixel correction interpolates out, or otherwise removes, pixels
+     * that do not accurately measure the incoming light (i.e. pixels that
+     * are stuck at an arbitrary value or are oversensitive).</p>
+     */
+    ACAMERA_HOT_PIXEL_MODE =                                    // byte (acamera_metadata_enum_android_hot_pixel_mode_t)
+            ACAMERA_HOT_PIXEL_START,
+    /**
+     * <p>List of hot pixel correction modes for ACAMERA_HOT_PIXEL_MODE that are supported by this
+     * camera device.</p>
+     *
+     * @see ACAMERA_HOT_PIXEL_MODE
+     *
+     * <p>Type: byte[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>FULL mode camera devices will always support FAST.</p>
+     */
+    ACAMERA_HOT_PIXEL_AVAILABLE_HOT_PIXEL_MODES =               // byte[n]
+            ACAMERA_HOT_PIXEL_START + 1,
+    ACAMERA_HOT_PIXEL_END,
+
+    /**
+     * <p>GPS coordinates to include in output JPEG
+     * EXIF.</p>
+     *
+     * <p>Type: double[3]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     */
+    ACAMERA_JPEG_GPS_COORDINATES =                              // double[3]
+            ACAMERA_JPEG_START,
+    /**
+     * <p>32 characters describing GPS algorithm to
+     * include in EXIF.</p>
+     *
+     * <p>Type: byte</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     */
+    ACAMERA_JPEG_GPS_PROCESSING_METHOD =                        // byte
+            ACAMERA_JPEG_START + 1,
+    /**
+     * <p>Time GPS fix was made to include in
+     * EXIF.</p>
+     *
+     * <p>Type: int64</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     */
+    ACAMERA_JPEG_GPS_TIMESTAMP =                                // int64
+            ACAMERA_JPEG_START + 2,
+    /**
+     * <p>The orientation for a JPEG image.</p>
+     *
+     * <p>Type: int32</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>The clockwise rotation angle in degrees, relative to the orientation
+     * to the camera, that the JPEG picture needs to be rotated by, to be viewed
+     * upright.</p>
+     * <p>Camera devices may either encode this value into the JPEG EXIF header, or
+     * rotate the image data to match this orientation. When the image data is rotated,
+     * the thumbnail data will also be rotated.</p>
+     * <p>Note that this orientation is relative to the orientation of the camera sensor, given
+     * by ACAMERA_SENSOR_ORIENTATION.</p>
+     * <p>To translate from the device orientation given by the Android sensor APIs, the following
+     * sample code may be used:</p>
+     * <pre><code>private int getJpegOrientation(CameraCharacteristics c, int deviceOrientation) {
+     *     if (deviceOrientation == android.view.OrientationEventListener.ORIENTATION_UNKNOWN) return 0;
+     *     int sensorOrientation = c.get(CameraCharacteristics.SENSOR_ORIENTATION);
+     *
+     *     // Round device orientation to a multiple of 90
+     *     deviceOrientation = (deviceOrientation + 45) / 90 * 90;
+     *
+     *     // Reverse device orientation for front-facing cameras
+     *     boolean facingFront = c.get(CameraCharacteristics.LENS_FACING) == CameraCharacteristics.LENS_FACING_FRONT;
+     *     if (facingFront) deviceOrientation = -deviceOrientation;
+     *
+     *     // Calculate desired JPEG orientation relative to camera orientation to make
+     *     // the image upright relative to the device orientation
+     *     int jpegOrientation = (sensorOrientation + deviceOrientation + 360) % 360;
+     *
+     *     return jpegOrientation;
+     * }
+     * </code></pre>
+     *
+     * @see ACAMERA_SENSOR_ORIENTATION
+     */
+    ACAMERA_JPEG_ORIENTATION =                                  // int32
+            ACAMERA_JPEG_START + 3,
+    /**
+     * <p>Compression quality of the final JPEG
+     * image.</p>
+     *
+     * <p>Type: byte</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>85-95 is typical usage range.</p>
+     */
+    ACAMERA_JPEG_QUALITY =                                      // byte
+            ACAMERA_JPEG_START + 4,
+    /**
+     * <p>Compression quality of JPEG
+     * thumbnail.</p>
+     *
+     * <p>Type: byte</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     */
+    ACAMERA_JPEG_THUMBNAIL_QUALITY =                            // byte
+            ACAMERA_JPEG_START + 5,
+    /**
+     * <p>Resolution of embedded JPEG thumbnail.</p>
+     *
+     * <p>Type: int32[2]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>When set to (0, 0) value, the JPEG EXIF will not contain thumbnail,
+     * but the captured JPEG will still be a valid image.</p>
+     * <p>For best results, when issuing a request for a JPEG image, the thumbnail size selected
+     * should have the same aspect ratio as the main JPEG output.</p>
+     * <p>If the thumbnail image aspect ratio differs from the JPEG primary image aspect
+     * ratio, the camera device creates the thumbnail by cropping it from the primary image.
+     * For example, if the primary image has 4:3 aspect ratio, the thumbnail image has
+     * 16:9 aspect ratio, the primary image will be cropped vertically (letterbox) to
+     * generate the thumbnail image. The thumbnail image will always have a smaller Field
+     * Of View (FOV) than the primary image when aspect ratios differ.</p>
+     * <p>When an ACAMERA_JPEG_ORIENTATION of non-zero degree is requested,
+     * the camera device will handle thumbnail rotation in one of the following ways:</p>
+     * <ul>
+     * <li>Set the
+     *   <a href="https://developer.android.com/reference/android/media/ExifInterface.html#TAG_ORIENTATION">EXIF orientation flag</a>
+     *   and keep jpeg and thumbnail image data unrotated.</li>
+     * <li>Rotate the jpeg and thumbnail image data and not set
+     *   <a href="https://developer.android.com/reference/android/media/ExifInterface.html#TAG_ORIENTATION">EXIF orientation flag</a>.
+     *   In this case, LIMITED or FULL hardware level devices will report rotated thumnail size
+     *   in capture result, so the width and height will be interchanged if 90 or 270 degree
+     *   orientation is requested. LEGACY device will always report unrotated thumbnail size.</li>
+     * </ul>
+     *
+     * @see ACAMERA_JPEG_ORIENTATION
+     */
+    ACAMERA_JPEG_THUMBNAIL_SIZE =                               // int32[2]
+            ACAMERA_JPEG_START + 6,
+    /**
+     * <p>List of JPEG thumbnail sizes for ACAMERA_JPEG_THUMBNAIL_SIZE supported by this
+     * camera device.</p>
+     *
+     * @see ACAMERA_JPEG_THUMBNAIL_SIZE
+     *
+     * <p>Type: int32[2*n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>This list will include at least one non-zero resolution, plus <code>(0,0)</code> for indicating no
+     * thumbnail should be generated.</p>
+     * <p>Below condiditions will be satisfied for this size list:</p>
+     * <ul>
+     * <li>The sizes will be sorted by increasing pixel area (width x height).
+     * If several resolutions have the same area, they will be sorted by increasing width.</li>
+     * <li>The aspect ratio of the largest thumbnail size will be same as the
+     * aspect ratio of largest JPEG output size in ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS.
+     * The largest size is defined as the size that has the largest pixel area
+     * in a given size list.</li>
+     * <li>Each output JPEG size in ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS will have at least
+     * one corresponding size that has the same aspect ratio in availableThumbnailSizes,
+     * and vice versa.</li>
+     * <li>All non-<code>(0, 0)</code> sizes will have non-zero widths and heights.</li>
+     * </ul>
+     *
+     * @see ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS
+     */
+    ACAMERA_JPEG_AVAILABLE_THUMBNAIL_SIZES =                    // int32[2*n]
+            ACAMERA_JPEG_START + 7,
+    ACAMERA_JPEG_END,
+
+    /**
+     * <p>The desired lens aperture size, as a ratio of lens focal length to the
+     * effective aperture diameter.</p>
+     *
+     * <p>Type: float</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>Setting this value is only supported on the camera devices that have a variable
+     * aperture lens.</p>
+     * <p>When this is supported and ACAMERA_CONTROL_AE_MODE is OFF,
+     * this can be set along with ACAMERA_SENSOR_EXPOSURE_TIME,
+     * ACAMERA_SENSOR_SENSITIVITY, and ACAMERA_SENSOR_FRAME_DURATION
+     * to achieve manual exposure control.</p>
+     * <p>The requested aperture value may take several frames to reach the
+     * requested value; the camera device will report the current (intermediate)
+     * aperture size in capture result metadata while the aperture is changing.
+     * While the aperture is still changing, ACAMERA_LENS_STATE will be set to MOVING.</p>
+     * <p>When this is supported and ACAMERA_CONTROL_AE_MODE is one of
+     * the ON modes, this will be overridden by the camera device
+     * auto-exposure algorithm, the overridden values are then provided
+     * back to the user in the corresponding result.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_MODE
+     * @see ACAMERA_LENS_STATE
+     * @see ACAMERA_SENSOR_EXPOSURE_TIME
+     * @see ACAMERA_SENSOR_FRAME_DURATION
+     * @see ACAMERA_SENSOR_SENSITIVITY
+     */
+    ACAMERA_LENS_APERTURE =                                     // float
+            ACAMERA_LENS_START,
+    /**
+     * <p>The desired setting for the lens neutral density filter(s).</p>
+     *
+     * <p>Type: float</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>This control will not be supported on most camera devices.</p>
+     * <p>Lens filters are typically used to lower the amount of light the
+     * sensor is exposed to (measured in steps of EV). As used here, an EV
+     * step is the standard logarithmic representation, which are
+     * non-negative, and inversely proportional to the amount of light
+     * hitting the sensor.  For example, setting this to 0 would result
+     * in no reduction of the incoming light, and setting this to 2 would
+     * mean that the filter is set to reduce incoming light by two stops
+     * (allowing 1/4 of the prior amount of light to the sensor).</p>
+     * <p>It may take several frames before the lens filter density changes
+     * to the requested value. While the filter density is still changing,
+     * ACAMERA_LENS_STATE will be set to MOVING.</p>
+     *
+     * @see ACAMERA_LENS_STATE
+     */
+    ACAMERA_LENS_FILTER_DENSITY =                               // float
+            ACAMERA_LENS_START + 1,
+    /**
+     * <p>The desired lens focal length; used for optical zoom.</p>
+     *
+     * <p>Type: float</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>This setting controls the physical focal length of the camera
+     * device's lens. Changing the focal length changes the field of
+     * view of the camera device, and is usually used for optical zoom.</p>
+     * <p>Like ACAMERA_LENS_FOCUS_DISTANCE and ACAMERA_LENS_APERTURE, this
+     * setting won't be applied instantaneously, and it may take several
+     * frames before the lens can change to the requested focal length.
+     * While the focal length is still changing, ACAMERA_LENS_STATE will
+     * be set to MOVING.</p>
+     * <p>Optical zoom will not be supported on most devices.</p>
+     *
+     * @see ACAMERA_LENS_APERTURE
+     * @see ACAMERA_LENS_FOCUS_DISTANCE
+     * @see ACAMERA_LENS_STATE
+     */
+    ACAMERA_LENS_FOCAL_LENGTH =                                 // float
+            ACAMERA_LENS_START + 2,
+    /**
+     * <p>Desired distance to plane of sharpest focus,
+     * measured from frontmost surface of the lens.</p>
+     *
+     * <p>Type: float</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>Should be zero for fixed-focus cameras</p>
+     */
+    ACAMERA_LENS_FOCUS_DISTANCE =                               // float
+            ACAMERA_LENS_START + 3,
+    /**
+     * <p>Sets whether the camera device uses optical image stabilization (OIS)
+     * when capturing images.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_lens_optical_stabilization_mode_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>OIS is used to compensate for motion blur due to small
+     * movements of the camera during capture. Unlike digital image
+     * stabilization (ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE), OIS
+     * makes use of mechanical elements to stabilize the camera
+     * sensor, and thus allows for longer exposure times before
+     * camera shake becomes apparent.</p>
+     * <p>Switching between different optical stabilization modes may take several
+     * frames to initialize, the camera device will report the current mode in
+     * capture result metadata. For example, When "ON" mode is requested, the
+     * optical stabilization modes in the first several capture results may still
+     * be "OFF", and it will become "ON" when the initialization is done.</p>
+     * <p>If a camera device supports both OIS and digital image stabilization
+     * (ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE), turning both modes on may produce undesirable
+     * interaction, so it is recommended not to enable both at the same time.</p>
+     * <p>Not all devices will support OIS; see
+     * ACAMERA_LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION for
+     * available controls.</p>
+     *
+     * @see ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE
+     * @see ACAMERA_LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION
+     */
+    ACAMERA_LENS_OPTICAL_STABILIZATION_MODE =                   // byte (acamera_metadata_enum_android_lens_optical_stabilization_mode_t)
+            ACAMERA_LENS_START + 4,
+    /**
+     * <p>Direction the camera faces relative to
+     * device screen.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_lens_facing_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     */
+    ACAMERA_LENS_FACING =                                       // byte (acamera_metadata_enum_android_lens_facing_t)
+            ACAMERA_LENS_START + 5,
+    /**
+     * <p>The orientation of the camera relative to the sensor
+     * coordinate system.</p>
+     *
+     * <p>Type: float[4]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>The four coefficients that describe the quaternion
+     * rotation from the Android sensor coordinate system to a
+     * camera-aligned coordinate system where the X-axis is
+     * aligned with the long side of the image sensor, the Y-axis
+     * is aligned with the short side of the image sensor, and
+     * the Z-axis is aligned with the optical axis of the sensor.</p>
+     * <p>To convert from the quaternion coefficients <code>(x,y,z,w)</code>
+     * to the axis of rotation <code>(a_x, a_y, a_z)</code> and rotation
+     * amount <code>theta</code>, the following formulas can be used:</p>
+     * <pre><code> theta = 2 * acos(w)
+     * a_x = x / sin(theta/2)
+     * a_y = y / sin(theta/2)
+     * a_z = z / sin(theta/2)
+     * </code></pre>
+     * <p>To create a 3x3 rotation matrix that applies the rotation
+     * defined by this quaternion, the following matrix can be
+     * used:</p>
+     * <pre><code>R = [ 1 - 2y^2 - 2z^2,       2xy - 2zw,       2xz + 2yw,
+     *            2xy + 2zw, 1 - 2x^2 - 2z^2,       2yz - 2xw,
+     *            2xz - 2yw,       2yz + 2xw, 1 - 2x^2 - 2y^2 ]
+     * </code></pre>
+     * <p>This matrix can then be used to apply the rotation to a
+     *  column vector point with</p>
+     * <p><code>p' = Rp</code></p>
+     * <p>where <code>p</code> is in the device sensor coordinate system, and
+     *  <code>p'</code> is in the camera-oriented coordinate system.</p>
+     */
+    ACAMERA_LENS_POSE_ROTATION =                                // float[4]
+            ACAMERA_LENS_START + 6,
+    /**
+     * <p>Position of the camera optical center.</p>
+     *
+     * <p>Type: float[3]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>The position of the camera device's lens optical center,
+     * as a three-dimensional vector <code>(x,y,z)</code>, relative to the
+     * optical center of the largest camera device facing in the
+     * same direction as this camera, in the
+     * <a href="https://developer.android.com/reference/android/hardware/SensorEvent.html">Android sensor coordinate axes</a>.
+     * Note that only the axis definitions are shared with
+     * the sensor coordinate system, but not the origin.</p>
+     * <p>If this device is the largest or only camera device with a
+     * given facing, then this position will be <code>(0, 0, 0)</code>; a
+     * camera device with a lens optical center located 3 cm from
+     * the main sensor along the +X axis (to the right from the
+     * user's perspective) will report <code>(0.03, 0, 0)</code>.</p>
+     * <p>To transform a pixel coordinates between two cameras
+     * facing the same direction, first the source camera
+     * ACAMERA_LENS_RADIAL_DISTORTION must be corrected for.  Then
+     * the source camera ACAMERA_LENS_INTRINSIC_CALIBRATION needs
+     * to be applied, followed by the ACAMERA_LENS_POSE_ROTATION
+     * of the source camera, the translation of the source camera
+     * relative to the destination camera, the
+     * ACAMERA_LENS_POSE_ROTATION of the destination camera, and
+     * finally the inverse of ACAMERA_LENS_INTRINSIC_CALIBRATION
+     * of the destination camera. This obtains a
+     * radial-distortion-free coordinate in the destination
+     * camera pixel coordinates.</p>
+     * <p>To compare this against a real image from the destination
+     * camera, the destination camera image then needs to be
+     * corrected for radial distortion before comparison or
+     * sampling.</p>
+     *
+     * @see ACAMERA_LENS_INTRINSIC_CALIBRATION
+     * @see ACAMERA_LENS_POSE_ROTATION
+     * @see ACAMERA_LENS_RADIAL_DISTORTION
+     */
+    ACAMERA_LENS_POSE_TRANSLATION =                             // float[3]
+            ACAMERA_LENS_START + 7,
+    /**
+     * <p>The range of scene distances that are in
+     * sharp focus (depth of field).</p>
+     *
+     * <p>Type: float[2]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>If variable focus not supported, can still report
+     * fixed depth of field range</p>
+     */
+    ACAMERA_LENS_FOCUS_RANGE =                                  // float[2]
+            ACAMERA_LENS_START + 8,
+    /**
+     * <p>Current lens status.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_lens_state_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>For lens parameters ACAMERA_LENS_FOCAL_LENGTH, ACAMERA_LENS_FOCUS_DISTANCE,
+     * ACAMERA_LENS_FILTER_DENSITY and ACAMERA_LENS_APERTURE, when changes are requested,
+     * they may take several frames to reach the requested values. This state indicates
+     * the current status of the lens parameters.</p>
+     * <p>When the state is STATIONARY, the lens parameters are not changing. This could be
+     * either because the parameters are all fixed, or because the lens has had enough
+     * time to reach the most recently-requested values.
+     * If all these lens parameters are not changable for a camera device, as listed below:</p>
+     * <ul>
+     * <li>Fixed focus (<code>ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE == 0</code>), which means
+     * ACAMERA_LENS_FOCUS_DISTANCE parameter will always be 0.</li>
+     * <li>Fixed focal length (ACAMERA_LENS_INFO_AVAILABLE_FOCAL_LENGTHS contains single value),
+     * which means the optical zoom is not supported.</li>
+     * <li>No ND filter (ACAMERA_LENS_INFO_AVAILABLE_FILTER_DENSITIES contains only 0).</li>
+     * <li>Fixed aperture (ACAMERA_LENS_INFO_AVAILABLE_APERTURES contains single value).</li>
+     * </ul>
+     * <p>Then this state will always be STATIONARY.</p>
+     * <p>When the state is MOVING, it indicates that at least one of the lens parameters
+     * is changing.</p>
+     *
+     * @see ACAMERA_LENS_APERTURE
+     * @see ACAMERA_LENS_FILTER_DENSITY
+     * @see ACAMERA_LENS_FOCAL_LENGTH
+     * @see ACAMERA_LENS_FOCUS_DISTANCE
+     * @see ACAMERA_LENS_INFO_AVAILABLE_APERTURES
+     * @see ACAMERA_LENS_INFO_AVAILABLE_FILTER_DENSITIES
+     * @see ACAMERA_LENS_INFO_AVAILABLE_FOCAL_LENGTHS
+     * @see ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE
+     */
+    ACAMERA_LENS_STATE =                                        // byte (acamera_metadata_enum_android_lens_state_t)
+            ACAMERA_LENS_START + 9,
+    /**
+     * <p>The parameters for this camera device's intrinsic
+     * calibration.</p>
+     *
+     * <p>Type: float[5]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>The five calibration parameters that describe the
+     * transform from camera-centric 3D coordinates to sensor
+     * pixel coordinates:</p>
+     * <pre><code>[f_x, f_y, c_x, c_y, s]
+     * </code></pre>
+     * <p>Where <code>f_x</code> and <code>f_y</code> are the horizontal and vertical
+     * focal lengths, <code>[c_x, c_y]</code> is the position of the optical
+     * axis, and <code>s</code> is a skew parameter for the sensor plane not
+     * being aligned with the lens plane.</p>
+     * <p>These are typically used within a transformation matrix K:</p>
+     * <pre><code>K = [ f_x,   s, c_x,
+     *        0, f_y, c_y,
+     *        0    0,   1 ]
+     * </code></pre>
+     * <p>which can then be combined with the camera pose rotation
+     * <code>R</code> and translation <code>t</code> (ACAMERA_LENS_POSE_ROTATION and
+     * ACAMERA_LENS_POSE_TRANSLATION, respective) to calculate the
+     * complete transform from world coordinates to pixel
+     * coordinates:</p>
+     * <pre><code>P = [ K 0   * [ R t
+     *      0 1 ]     0 1 ]
+     * </code></pre>
+     * <p>and with <code>p_w</code> being a point in the world coordinate system
+     * and <code>p_s</code> being a point in the camera active pixel array
+     * coordinate system, and with the mapping including the
+     * homogeneous division by z:</p>
+     * <pre><code> p_h = (x_h, y_h, z_h) = P p_w
+     * p_s = p_h / z_h
+     * </code></pre>
+     * <p>so <code>[x_s, y_s]</code> is the pixel coordinates of the world
+     * point, <code>z_s = 1</code>, and <code>w_s</code> is a measurement of disparity
+     * (depth) in pixel coordinates.</p>
+     * <p>Note that the coordinate system for this transform is the
+     * ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE system,
+     * where <code>(0,0)</code> is the top-left of the
+     * preCorrectionActiveArraySize rectangle. Once the pose and
+     * intrinsic calibration transforms have been applied to a
+     * world point, then the ACAMERA_LENS_RADIAL_DISTORTION
+     * transform needs to be applied, and the result adjusted to
+     * be in the ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE coordinate
+     * system (where <code>(0, 0)</code> is the top-left of the
+     * activeArraySize rectangle), to determine the final pixel
+     * coordinate of the world point for processed (non-RAW)
+     * output buffers.</p>
+     *
+     * @see ACAMERA_LENS_POSE_ROTATION
+     * @see ACAMERA_LENS_POSE_TRANSLATION
+     * @see ACAMERA_LENS_RADIAL_DISTORTION
+     * @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+     * @see ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE
+     */
+    ACAMERA_LENS_INTRINSIC_CALIBRATION =                        // float[5]
+            ACAMERA_LENS_START + 10,
+    /**
+     * <p>The correction coefficients to correct for this camera device's
+     * radial and tangential lens distortion.</p>
+     *
+     * <p>Type: float[6]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>Four radial distortion coefficients <code>[kappa_0, kappa_1, kappa_2,
+     * kappa_3]</code> and two tangential distortion coefficients
+     * <code>[kappa_4, kappa_5]</code> that can be used to correct the
+     * lens's geometric distortion with the mapping equations:</p>
+     * <pre><code> x_c = x_i * ( kappa_0 + kappa_1 * r^2 + kappa_2 * r^4 + kappa_3 * r^6 ) +
+     *        kappa_4 * (2 * x_i * y_i) + kappa_5 * ( r^2 + 2 * x_i^2 )
+     *  y_c = y_i * ( kappa_0 + kappa_1 * r^2 + kappa_2 * r^4 + kappa_3 * r^6 ) +
+     *        kappa_5 * (2 * x_i * y_i) + kappa_4 * ( r^2 + 2 * y_i^2 )
+     * </code></pre>
+     * <p>Here, <code>[x_c, y_c]</code> are the coordinates to sample in the
+     * input image that correspond to the pixel values in the
+     * corrected image at the coordinate <code>[x_i, y_i]</code>:</p>
+     * <pre><code> correctedImage(x_i, y_i) = sample_at(x_c, y_c, inputImage)
+     * </code></pre>
+     * <p>The pixel coordinates are defined in a normalized
+     * coordinate system related to the
+     * ACAMERA_LENS_INTRINSIC_CALIBRATION calibration fields.
+     * Both <code>[x_i, y_i]</code> and <code>[x_c, y_c]</code> have <code>(0,0)</code> at the
+     * lens optical center <code>[c_x, c_y]</code>. The maximum magnitudes
+     * of both x and y coordinates are normalized to be 1 at the
+     * edge further from the optical center, so the range
+     * for both dimensions is <code>-1 &lt;= x &lt;= 1</code>.</p>
+     * <p>Finally, <code>r</code> represents the radial distance from the
+     * optical center, <code>r^2 = x_i^2 + y_i^2</code>, and its magnitude
+     * is therefore no larger than <code>|r| &lt;= sqrt(2)</code>.</p>
+     * <p>The distortion model used is the Brown-Conrady model.</p>
+     *
+     * @see ACAMERA_LENS_INTRINSIC_CALIBRATION
+     */
+    ACAMERA_LENS_RADIAL_DISTORTION =                            // float[6]
+            ACAMERA_LENS_START + 11,
+    ACAMERA_LENS_END,
+
+    /**
+     * <p>List of aperture size values for ACAMERA_LENS_APERTURE that are
+     * supported by this camera device.</p>
+     *
+     * @see ACAMERA_LENS_APERTURE
+     *
+     * <p>Type: float[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>If the camera device doesn't support a variable lens aperture,
+     * this list will contain only one value, which is the fixed aperture size.</p>
+     * <p>If the camera device supports a variable aperture, the aperture values
+     * in this list will be sorted in ascending order.</p>
+     */
+    ACAMERA_LENS_INFO_AVAILABLE_APERTURES =                     // float[n]
+            ACAMERA_LENS_INFO_START,
+    /**
+     * <p>List of neutral density filter values for
+     * ACAMERA_LENS_FILTER_DENSITY that are supported by this camera device.</p>
+     *
+     * @see ACAMERA_LENS_FILTER_DENSITY
+     *
+     * <p>Type: float[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>If a neutral density filter is not supported by this camera device,
+     * this list will contain only 0. Otherwise, this list will include every
+     * filter density supported by the camera device, in ascending order.</p>
+     */
+    ACAMERA_LENS_INFO_AVAILABLE_FILTER_DENSITIES =              // float[n]
+            ACAMERA_LENS_INFO_START + 1,
+    /**
+     * <p>List of focal lengths for ACAMERA_LENS_FOCAL_LENGTH that are supported by this camera
+     * device.</p>
+     *
+     * @see ACAMERA_LENS_FOCAL_LENGTH
+     *
+     * <p>Type: float[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>If optical zoom is not supported, this list will only contain
+     * a single value corresponding to the fixed focal length of the
+     * device. Otherwise, this list will include every focal length supported
+     * by the camera device, in ascending order.</p>
+     */
+    ACAMERA_LENS_INFO_AVAILABLE_FOCAL_LENGTHS =                 // float[n]
+            ACAMERA_LENS_INFO_START + 2,
+    /**
+     * <p>List of optical image stabilization (OIS) modes for
+     * ACAMERA_LENS_OPTICAL_STABILIZATION_MODE that are supported by this camera device.</p>
+     *
+     * @see ACAMERA_LENS_OPTICAL_STABILIZATION_MODE
+     *
+     * <p>Type: byte[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>If OIS is not supported by a given camera device, this list will
+     * contain only OFF.</p>
+     */
+    ACAMERA_LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION =         // byte[n]
+            ACAMERA_LENS_INFO_START + 3,
+    /**
+     * <p>Hyperfocal distance for this lens.</p>
+     *
+     * <p>Type: float</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>If the lens is not fixed focus, the camera device will report this
+     * field when ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION is APPROXIMATE or CALIBRATED.</p>
+     *
+     * @see ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION
+     */
+    ACAMERA_LENS_INFO_HYPERFOCAL_DISTANCE =                     // float
+            ACAMERA_LENS_INFO_START + 4,
+    /**
+     * <p>Shortest distance from frontmost surface
+     * of the lens that can be brought into sharp focus.</p>
+     *
+     * <p>Type: float</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>If the lens is fixed-focus, this will be
+     * 0.</p>
+     */
+    ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE =                  // float
+            ACAMERA_LENS_INFO_START + 5,
+    /**
+     * <p>Dimensions of lens shading map.</p>
+     *
+     * <p>Type: int32[2]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>The map should be on the order of 30-40 rows and columns, and
+     * must be smaller than 64x64.</p>
+     */
+    ACAMERA_LENS_INFO_SHADING_MAP_SIZE =                        // int32[2]
+            ACAMERA_LENS_INFO_START + 6,
+    /**
+     * <p>The lens focus distance calibration quality.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_lens_info_focus_distance_calibration_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>The lens focus distance calibration quality determines the reliability of
+     * focus related metadata entries, i.e. ACAMERA_LENS_FOCUS_DISTANCE,
+     * ACAMERA_LENS_FOCUS_RANGE, ACAMERA_LENS_INFO_HYPERFOCAL_DISTANCE, and
+     * ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE.</p>
+     * <p>APPROXIMATE and CALIBRATED devices report the focus metadata in
+     * units of diopters (1/meter), so <code>0.0f</code> represents focusing at infinity,
+     * and increasing positive numbers represent focusing closer and closer
+     * to the camera device. The focus distance control also uses diopters
+     * on these devices.</p>
+     * <p>UNCALIBRATED devices do not use units that are directly comparable
+     * to any real physical measurement, but <code>0.0f</code> still represents farthest
+     * focus, and ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE represents the
+     * nearest focus the device can achieve.</p>
+     *
+     * @see ACAMERA_LENS_FOCUS_DISTANCE
+     * @see ACAMERA_LENS_FOCUS_RANGE
+     * @see ACAMERA_LENS_INFO_HYPERFOCAL_DISTANCE
+     * @see ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE
+     */
+    ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION =              // byte (acamera_metadata_enum_android_lens_info_focus_distance_calibration_t)
+            ACAMERA_LENS_INFO_START + 7,
+    ACAMERA_LENS_INFO_END,
+
+    /**
+     * <p>Mode of operation for the noise reduction algorithm.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_noise_reduction_mode_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>The noise reduction algorithm attempts to improve image quality by removing
+     * excessive noise added by the capture process, especially in dark conditions.</p>
+     * <p>OFF means no noise reduction will be applied by the camera device, for both raw and
+     * YUV domain.</p>
+     * <p>MINIMAL means that only sensor raw domain basic noise reduction is enabled ,to remove
+     * demosaicing or other processing artifacts. For YUV_REPROCESSING, MINIMAL is same as OFF.
+     * This mode is optional, may not be support by all devices. The application should check
+     * ACAMERA_NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES before using it.</p>
+     * <p>FAST/HIGH_QUALITY both mean camera device determined noise filtering
+     * will be applied. HIGH_QUALITY mode indicates that the camera device
+     * will use the highest-quality noise filtering algorithms,
+     * even if it slows down capture rate. FAST means the camera device will not
+     * slow down capture rate when applying noise filtering. FAST may be the same as MINIMAL if
+     * MINIMAL is listed, or the same as OFF if any noise filtering will slow down capture rate.
+     * Every output stream will have a similar amount of enhancement applied.</p>
+     * <p>ZERO_SHUTTER_LAG is meant to be used by applications that maintain a continuous circular
+     * buffer of high-resolution images during preview and reprocess image(s) from that buffer
+     * into a final capture when triggered by the user. In this mode, the camera device applies
+     * noise reduction to low-resolution streams (below maximum recording resolution) to maximize
+     * preview quality, but does not apply noise reduction to high-resolution streams, since
+     * those will be reprocessed later if necessary.</p>
+     * <p>For YUV_REPROCESSING, these FAST/HIGH_QUALITY modes both mean that the camera device
+     * will apply FAST/HIGH_QUALITY YUV domain noise reduction, respectively. The camera device
+     * may adjust the noise reduction parameters for best image quality based on the
+     * android.reprocess.effectiveExposureFactor if it is set.</p>
+     *
+     * @see ACAMERA_NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES
+     */
+    ACAMERA_NOISE_REDUCTION_MODE =                              // byte (acamera_metadata_enum_android_noise_reduction_mode_t)
+            ACAMERA_NOISE_REDUCTION_START,
+    /**
+     * <p>List of noise reduction modes for ACAMERA_NOISE_REDUCTION_MODE that are supported
+     * by this camera device.</p>
+     *
+     * @see ACAMERA_NOISE_REDUCTION_MODE
+     *
+     * <p>Type: byte[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>Full-capability camera devices will always support OFF and FAST.</p>
+     * <p>Camera devices that support YUV_REPROCESSING or PRIVATE_REPROCESSING will support
+     * ZERO_SHUTTER_LAG.</p>
+     * <p>Legacy-capability camera devices will only support FAST mode.</p>
+     */
+    ACAMERA_NOISE_REDUCTION_AVAILABLE_NOISE_REDUCTION_MODES =   // byte[n]
+            ACAMERA_NOISE_REDUCTION_START + 2,
+    ACAMERA_NOISE_REDUCTION_END,
+
+    /**
+     * <p>The maximum numbers of different types of output streams
+     * that can be configured and used simultaneously by a camera device.</p>
+     *
+     * <p>Type: int32[3]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>This is a 3 element tuple that contains the max number of output simultaneous
+     * streams for raw sensor, processed (but not stalling), and processed (and stalling)
+     * formats respectively. For example, assuming that JPEG is typically a processed and
+     * stalling stream, if max raw sensor format output stream number is 1, max YUV streams
+     * number is 3, and max JPEG stream number is 2, then this tuple should be <code>(1, 3, 2)</code>.</p>
+     * <p>This lists the upper bound of the number of output streams supported by
+     * the camera device. Using more streams simultaneously may require more hardware and
+     * CPU resources that will consume more power. The image format for an output stream can
+     * be any supported format provided by ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS.
+     * The formats defined in ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS can be catergorized
+     * into the 3 stream types as below:</p>
+     * <ul>
+     * <li>Processed (but stalling): any non-RAW format with a stallDurations &gt; 0.
+     *   Typically {@link AIMAGE_FORMAT_JPEG} format.</li>
+     * <li>Raw formats: {@link AIMAGE_FORMAT_RAW16}, {@link AIMAGE_FORMAT_RAW10}, or
+     *   {@link AIMAGE_FORMAT_RAW12}.</li>
+     * <li>Processed (but not-stalling): any non-RAW format without a stall duration.
+     *   Typically {@link AIMAGE_FORMAT_YUV_420_888}.</li>
+     * </ul>
+     *
+     * @see ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS
+     */
+    ACAMERA_REQUEST_MAX_NUM_OUTPUT_STREAMS =                    // int32[3]
+            ACAMERA_REQUEST_START + 6,
+    /**
+     * <p>Specifies the number of pipeline stages the frame went
+     * through from when it was exposed to when the final completed result
+     * was available to the framework.</p>
+     *
+     * <p>Type: byte</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>Depending on what settings are used in the request, and
+     * what streams are configured, the data may undergo less processing,
+     * and some pipeline stages skipped.</p>
+     * <p>See ACAMERA_REQUEST_PIPELINE_MAX_DEPTH for more details.</p>
+     *
+     * @see ACAMERA_REQUEST_PIPELINE_MAX_DEPTH
+     */
+    ACAMERA_REQUEST_PIPELINE_DEPTH =                            // byte
+            ACAMERA_REQUEST_START + 9,
+    /**
+     * <p>Specifies the number of maximum pipeline stages a frame
+     * has to go through from when it's exposed to when it's available
+     * to the framework.</p>
+     *
+     * <p>Type: byte</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>A typical minimum value for this is 2 (one stage to expose,
+     * one stage to readout) from the sensor. The ISP then usually adds
+     * its own stages to do custom HW processing. Further stages may be
+     * added by SW processing.</p>
+     * <p>Depending on what settings are used (e.g. YUV, JPEG) and what
+     * processing is enabled (e.g. face detection), the actual pipeline
+     * depth (specified by ACAMERA_REQUEST_PIPELINE_DEPTH) may be less than
+     * the max pipeline depth.</p>
+     * <p>A pipeline depth of X stages is equivalent to a pipeline latency of
+     * X frame intervals.</p>
+     * <p>This value will normally be 8 or less, however, for high speed capture session,
+     * the max pipeline depth will be up to 8 x size of high speed capture request list.</p>
+     *
+     * @see ACAMERA_REQUEST_PIPELINE_DEPTH
+     */
+    ACAMERA_REQUEST_PIPELINE_MAX_DEPTH =                        // byte
+            ACAMERA_REQUEST_START + 10,
+    /**
+     * <p>Defines how many sub-components
+     * a result will be composed of.</p>
+     *
+     * <p>Type: int32</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>In order to combat the pipeline latency, partial results
+     * may be delivered to the application layer from the camera device as
+     * soon as they are available.</p>
+     * <p>Optional; defaults to 1. A value of 1 means that partial
+     * results are not supported, and only the final TotalCaptureResult will
+     * be produced by the camera device.</p>
+     * <p>A typical use case for this might be: after requesting an
+     * auto-focus (AF) lock the new AF state might be available 50%
+     * of the way through the pipeline.  The camera device could
+     * then immediately dispatch this state via a partial result to
+     * the application, and the rest of the metadata via later
+     * partial results.</p>
+     */
+    ACAMERA_REQUEST_PARTIAL_RESULT_COUNT =                      // int32
+            ACAMERA_REQUEST_START + 11,
+    /**
+     * <p>List of capabilities that this camera device
+     * advertises as fully supporting.</p>
+     *
+     * <p>Type: byte[n] (acamera_metadata_enum_android_request_available_capabilities_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>A capability is a contract that the camera device makes in order
+     * to be able to satisfy one or more use cases.</p>
+     * <p>Listing a capability guarantees that the whole set of features
+     * required to support a common use will all be available.</p>
+     * <p>Using a subset of the functionality provided by an unsupported
+     * capability may be possible on a specific camera device implementation;
+     * to do this query each of ACAMERA_REQUEST_AVAILABLE_REQUEST_KEYS,
+     * ACAMERA_REQUEST_AVAILABLE_RESULT_KEYS,
+     * ACAMERA_REQUEST_AVAILABLE_CHARACTERISTICS_KEYS.</p>
+     * <p>The following capabilities are guaranteed to be available on
+     * ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL <code>==</code> FULL devices:</p>
+     * <ul>
+     * <li>MANUAL_SENSOR</li>
+     * <li>MANUAL_POST_PROCESSING</li>
+     * </ul>
+     * <p>Other capabilities may be available on either FULL or LIMITED
+     * devices, but the application should query this key to be sure.</p>
+     *
+     * @see ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL
+     * @see ACAMERA_REQUEST_AVAILABLE_CHARACTERISTICS_KEYS
+     * @see ACAMERA_REQUEST_AVAILABLE_REQUEST_KEYS
+     * @see ACAMERA_REQUEST_AVAILABLE_RESULT_KEYS
+     */
+    ACAMERA_REQUEST_AVAILABLE_CAPABILITIES =                    // byte[n] (acamera_metadata_enum_android_request_available_capabilities_t)
+            ACAMERA_REQUEST_START + 12,
+    /**
+     * <p>A list of all keys that the camera device has available
+     * to use with {@link ACaptureRequest}.</p>
+     *
+     * <p>Type: int32[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>Attempting to set a key into a CaptureRequest that is not
+     * listed here will result in an invalid request and will be rejected
+     * by the camera device.</p>
+     * <p>This field can be used to query the feature set of a camera device
+     * at a more granular level than capabilities. This is especially
+     * important for optional keys that are not listed under any capability
+     * in ACAMERA_REQUEST_AVAILABLE_CAPABILITIES.</p>
+     *
+     * @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+     */
+    ACAMERA_REQUEST_AVAILABLE_REQUEST_KEYS =                    // int32[n]
+            ACAMERA_REQUEST_START + 13,
+    /**
+     * <p>A list of all keys that the camera device has available
+     * to query with {@link ACameraMetadata} from
+     * {@link ACameraCaptureSession_captureCallback_result}.</p>
+     *
+     * <p>Type: int32[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>Attempting to get a key from a CaptureResult that is not
+     * listed here will always return a <code>null</code> value. Getting a key from
+     * a CaptureResult that is listed here will generally never return a <code>null</code>
+     * value.</p>
+     * <p>The following keys may return <code>null</code> unless they are enabled:</p>
+     * <ul>
+     * <li>ACAMERA_STATISTICS_LENS_SHADING_MAP (non-null iff ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE == ON)</li>
+     * </ul>
+     * <p>(Those sometimes-null keys will nevertheless be listed here
+     * if they are available.)</p>
+     * <p>This field can be used to query the feature set of a camera device
+     * at a more granular level than capabilities. This is especially
+     * important for optional keys that are not listed under any capability
+     * in ACAMERA_REQUEST_AVAILABLE_CAPABILITIES.</p>
+     *
+     * @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+     * @see ACAMERA_STATISTICS_LENS_SHADING_MAP
+     * @see ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE
+     */
+    ACAMERA_REQUEST_AVAILABLE_RESULT_KEYS =                     // int32[n]
+            ACAMERA_REQUEST_START + 14,
+    /**
+     * <p>A list of all keys that the camera device has available
+     * to query with {@link ACameraMetadata} from
+     * {@link ACameraManager_getCameraCharacteristics}.</p>
+     *
+     * <p>Type: int32[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>This entry follows the same rules as
+     * ACAMERA_REQUEST_AVAILABLE_RESULT_KEYS (except that it applies for
+     * CameraCharacteristics instead of CaptureResult). See above for more
+     * details.</p>
+     *
+     * @see ACAMERA_REQUEST_AVAILABLE_RESULT_KEYS
+     */
+    ACAMERA_REQUEST_AVAILABLE_CHARACTERISTICS_KEYS =            // int32[n]
+            ACAMERA_REQUEST_START + 15,
+    ACAMERA_REQUEST_END,
+
+    /**
+     * <p>The desired region of the sensor to read out for this capture.</p>
+     *
+     * <p>Type: int32[4]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>This control can be used to implement digital zoom.</p>
+     * <p>The data representation is int[4], which maps to (left, top, width, height).</p>
+     * <p>The crop region coordinate system is based off
+     * ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE, with <code>(0, 0)</code> being the
+     * top-left corner of the sensor active array.</p>
+     * <p>Output streams use this rectangle to produce their output,
+     * cropping to a smaller region if necessary to maintain the
+     * stream's aspect ratio, then scaling the sensor input to
+     * match the output's configured resolution.</p>
+     * <p>The crop region is applied after the RAW to other color
+     * space (e.g. YUV) conversion. Since raw streams
+     * (e.g. RAW16) don't have the conversion stage, they are not
+     * croppable. The crop region will be ignored by raw streams.</p>
+     * <p>For non-raw streams, any additional per-stream cropping will
+     * be done to maximize the final pixel area of the stream.</p>
+     * <p>For example, if the crop region is set to a 4:3 aspect
+     * ratio, then 4:3 streams will use the exact crop
+     * region. 16:9 streams will further crop vertically
+     * (letterbox).</p>
+     * <p>Conversely, if the crop region is set to a 16:9, then 4:3
+     * outputs will crop horizontally (pillarbox), and 16:9
+     * streams will match exactly. These additional crops will
+     * be centered within the crop region.</p>
+     * <p>The width and height of the crop region cannot
+     * be set to be smaller than
+     * <code>floor( activeArraySize.width / ACAMERA_SCALER_AVAILABLE_MAX_DIGITAL_ZOOM )</code> and
+     * <code>floor( activeArraySize.height / ACAMERA_SCALER_AVAILABLE_MAX_DIGITAL_ZOOM )</code>, respectively.</p>
+     * <p>The camera device may adjust the crop region to account
+     * for rounding and other hardware requirements; the final
+     * crop region used will be included in the output capture
+     * result.</p>
+     *
+     * @see ACAMERA_SCALER_AVAILABLE_MAX_DIGITAL_ZOOM
+     * @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+     */
+    ACAMERA_SCALER_CROP_REGION =                                // int32[4]
+            ACAMERA_SCALER_START,
+    /**
+     * <p>The maximum ratio between both active area width
+     * and crop region width, and active area height and
+     * crop region height, for ACAMERA_SCALER_CROP_REGION.</p>
+     *
+     * @see ACAMERA_SCALER_CROP_REGION
+     *
+     * <p>Type: float</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>This represents the maximum amount of zooming possible by
+     * the camera device, or equivalently, the minimum cropping
+     * window size.</p>
+     * <p>Crop regions that have a width or height that is smaller
+     * than this ratio allows will be rounded up to the minimum
+     * allowed size by the camera device.</p>
+     */
+    ACAMERA_SCALER_AVAILABLE_MAX_DIGITAL_ZOOM =                 // float
+            ACAMERA_SCALER_START + 4,
+    /**
+     * <p>The available stream configurations that this
+     * camera device supports
+     * (i.e. format, width, height, output/input stream).</p>
+     *
+     * <p>Type: int32[n*4] (acamera_metadata_enum_android_scaler_available_stream_configurations_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>The configurations are listed as <code>(format, width, height, input?)</code>
+     * tuples.</p>
+     * <p>For a given use case, the actual maximum supported resolution
+     * may be lower than what is listed here, depending on the destination
+     * Surface for the image data. For example, for recording video,
+     * the video encoder chosen may have a maximum size limit (e.g. 1080p)
+     * smaller than what the camera (e.g. maximum resolution is 3264x2448)
+     * can provide.</p>
+     * <p>Please reference the documentation for the image data destination to
+     * check if it limits the maximum size for image data.</p>
+     * <p>Not all output formats may be supported in a configuration with
+     * an input stream of a particular format. For more details, see
+     * android.scaler.availableInputOutputFormatsMap.</p>
+     * <p>The following table describes the minimum required output stream
+     * configurations based on the hardware level
+     * (ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL):</p>
+     * <p>Format         | Size                                         | Hardware Level | Notes
+     * :-------------:|:--------------------------------------------:|:--------------:|:--------------:
+     * JPEG           | ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE          | Any            |
+     * JPEG           | 1920x1080 (1080p)                            | Any            | if 1080p &lt;= activeArraySize
+     * JPEG           | 1280x720 (720)                               | Any            | if 720p &lt;= activeArraySize
+     * JPEG           | 640x480 (480p)                               | Any            | if 480p &lt;= activeArraySize
+     * JPEG           | 320x240 (240p)                               | Any            | if 240p &lt;= activeArraySize
+     * YUV_420_888    | all output sizes available for JPEG          | FULL           |
+     * YUV_420_888    | all output sizes available for JPEG, up to the maximum video size | LIMITED        |
+     * IMPLEMENTATION_DEFINED | same as YUV_420_888                  | Any            |</p>
+     * <p>Refer to ACAMERA_REQUEST_AVAILABLE_CAPABILITIES for additional
+     * mandatory stream configurations on a per-capability basis.</p>
+     *
+     * @see ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL
+     * @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+     * @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+     */
+    ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS =            // int32[n*4] (acamera_metadata_enum_android_scaler_available_stream_configurations_t)
+            ACAMERA_SCALER_START + 10,
+    /**
+     * <p>This lists the minimum frame duration for each
+     * format/size combination.</p>
+     *
+     * <p>Type: int64[4*n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>This should correspond to the frame duration when only that
+     * stream is active, with all processing (typically in android.*.mode)
+     * set to either OFF or FAST.</p>
+     * <p>When multiple streams are used in a request, the minimum frame
+     * duration will be max(individual stream min durations).</p>
+     * <p>The minimum frame duration of a stream (of a particular format, size)
+     * is the same regardless of whether the stream is input or output.</p>
+     * <p>See ACAMERA_SENSOR_FRAME_DURATION and
+     * ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS for more details about
+     * calculating the max frame rate.</p>
+     *
+     * @see ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS
+     * @see ACAMERA_SENSOR_FRAME_DURATION
+     */
+    ACAMERA_SCALER_AVAILABLE_MIN_FRAME_DURATIONS =              // int64[4*n]
+            ACAMERA_SCALER_START + 11,
+    /**
+     * <p>This lists the maximum stall duration for each
+     * output format/size combination.</p>
+     *
+     * <p>Type: int64[4*n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>A stall duration is how much extra time would get added
+     * to the normal minimum frame duration for a repeating request
+     * that has streams with non-zero stall.</p>
+     * <p>For example, consider JPEG captures which have the following
+     * characteristics:</p>
+     * <ul>
+     * <li>JPEG streams act like processed YUV streams in requests for which
+     * they are not included; in requests in which they are directly
+     * referenced, they act as JPEG streams. This is because supporting a
+     * JPEG stream requires the underlying YUV data to always be ready for
+     * use by a JPEG encoder, but the encoder will only be used (and impact
+     * frame duration) on requests that actually reference a JPEG stream.</li>
+     * <li>The JPEG processor can run concurrently to the rest of the camera
+     * pipeline, but cannot process more than 1 capture at a time.</li>
+     * </ul>
+     * <p>In other words, using a repeating YUV request would result
+     * in a steady frame rate (let's say it's 30 FPS). If a single
+     * JPEG request is submitted periodically, the frame rate will stay
+     * at 30 FPS (as long as we wait for the previous JPEG to return each
+     * time). If we try to submit a repeating YUV + JPEG request, then
+     * the frame rate will drop from 30 FPS.</p>
+     * <p>In general, submitting a new request with a non-0 stall time
+     * stream will <em>not</em> cause a frame rate drop unless there are still
+     * outstanding buffers for that stream from previous requests.</p>
+     * <p>Submitting a repeating request with streams (call this <code>S</code>)
+     * is the same as setting the minimum frame duration from
+     * the normal minimum frame duration corresponding to <code>S</code>, added with
+     * the maximum stall duration for <code>S</code>.</p>
+     * <p>If interleaving requests with and without a stall duration,
+     * a request will stall by the maximum of the remaining times
+     * for each can-stall stream with outstanding buffers.</p>
+     * <p>This means that a stalling request will not have an exposure start
+     * until the stall has completed.</p>
+     * <p>This should correspond to the stall duration when only that stream is
+     * active, with all processing (typically in android.*.mode) set to FAST
+     * or OFF. Setting any of the processing modes to HIGH_QUALITY
+     * effectively results in an indeterminate stall duration for all
+     * streams in a request (the regular stall calculation rules are
+     * ignored).</p>
+     * <p>The following formats may always have a stall duration:</p>
+     * <ul>
+     * <li>{@link AIMAGE_FORMAT_JPEG}</li>
+     * <li>{@link AIMAGE_FORMAT_RAW16}</li>
+     * </ul>
+     * <p>The following formats will never have a stall duration:</p>
+     * <ul>
+     * <li>{@link AIMAGE_FORMAT_YUV_420_888}</li>
+     * <li>{@link AIMAGE_FORMAT_RAW10}</li>
+     * </ul>
+     * <p>All other formats may or may not have an allowed stall duration on
+     * a per-capability basis; refer to ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+     * for more details.</p>
+     * <p>See ACAMERA_SENSOR_FRAME_DURATION for more information about
+     * calculating the max frame rate (absent stalls).</p>
+     *
+     * @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+     * @see ACAMERA_SENSOR_FRAME_DURATION
+     */
+    ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS =                  // int64[4*n]
+            ACAMERA_SCALER_START + 12,
+    /**
+     * <p>The crop type that this camera device supports.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_scaler_cropping_type_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>When passing a non-centered crop region (ACAMERA_SCALER_CROP_REGION) to a camera
+     * device that only supports CENTER_ONLY cropping, the camera device will move the
+     * crop region to the center of the sensor active array (ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE)
+     * and keep the crop region width and height unchanged. The camera device will return the
+     * final used crop region in metadata result ACAMERA_SCALER_CROP_REGION.</p>
+     * <p>Camera devices that support FREEFORM cropping will support any crop region that
+     * is inside of the active array. The camera device will apply the same crop region and
+     * return the final used crop region in capture result metadata ACAMERA_SCALER_CROP_REGION.</p>
+     * <p>LEGACY capability devices will only support CENTER_ONLY cropping.</p>
+     *
+     * @see ACAMERA_SCALER_CROP_REGION
+     * @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+     */
+    ACAMERA_SCALER_CROPPING_TYPE =                              // byte (acamera_metadata_enum_android_scaler_cropping_type_t)
+            ACAMERA_SCALER_START + 13,
+    ACAMERA_SCALER_END,
+
+    /**
+     * <p>Duration each pixel is exposed to
+     * light.</p>
+     *
+     * <p>Type: int64</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>If the sensor can't expose this exact duration, it will shorten the
+     * duration exposed to the nearest possible value (rather than expose longer).
+     * The final exposure time used will be available in the output capture result.</p>
+     * <p>This control is only effective if ACAMERA_CONTROL_AE_MODE or ACAMERA_CONTROL_MODE is set to
+     * OFF; otherwise the auto-exposure algorithm will override this value.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_MODE
+     * @see ACAMERA_CONTROL_MODE
+     */
+    ACAMERA_SENSOR_EXPOSURE_TIME =                              // int64
+            ACAMERA_SENSOR_START,
+    /**
+     * <p>Duration from start of frame exposure to
+     * start of next frame exposure.</p>
+     *
+     * <p>Type: int64</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>The maximum frame rate that can be supported by a camera subsystem is
+     * a function of many factors:</p>
+     * <ul>
+     * <li>Requested resolutions of output image streams</li>
+     * <li>Availability of binning / skipping modes on the imager</li>
+     * <li>The bandwidth of the imager interface</li>
+     * <li>The bandwidth of the various ISP processing blocks</li>
+     * </ul>
+     * <p>Since these factors can vary greatly between different ISPs and
+     * sensors, the camera abstraction tries to represent the bandwidth
+     * restrictions with as simple a model as possible.</p>
+     * <p>The model presented has the following characteristics:</p>
+     * <ul>
+     * <li>The image sensor is always configured to output the smallest
+     * resolution possible given the application's requested output stream
+     * sizes.  The smallest resolution is defined as being at least as large
+     * as the largest requested output stream size; the camera pipeline must
+     * never digitally upsample sensor data when the crop region covers the
+     * whole sensor. In general, this means that if only small output stream
+     * resolutions are configured, the sensor can provide a higher frame
+     * rate.</li>
+     * <li>Since any request may use any or all the currently configured
+     * output streams, the sensor and ISP must be configured to support
+     * scaling a single capture to all the streams at the same time.  This
+     * means the camera pipeline must be ready to produce the largest
+     * requested output size without any delay.  Therefore, the overall
+     * frame rate of a given configured stream set is governed only by the
+     * largest requested stream resolution.</li>
+     * <li>Using more than one output stream in a request does not affect the
+     * frame duration.</li>
+     * <li>Certain format-streams may need to do additional background processing
+     * before data is consumed/produced by that stream. These processors
+     * can run concurrently to the rest of the camera pipeline, but
+     * cannot process more than 1 capture at a time.</li>
+     * </ul>
+     * <p>The necessary information for the application, given the model above,
+     * is provided via
+     * {@link ACAMERA_SCALER_AVAILABLE_MIN_FRAME_DURATIONS}.
+     * These are used to determine the maximum frame rate / minimum frame
+     * duration that is possible for a given stream configuration.</p>
+     * <p>Specifically, the application can use the following rules to
+     * determine the minimum frame duration it can request from the camera
+     * device:</p>
+     * <ol>
+     * <li>Let the set of currently configured input/output streams
+     * be called <code>S</code>.</li>
+     * <li>Find the minimum frame durations for each stream in <code>S</code>, by looking
+     * it up in {@link ACAMERA_SCALER_AVAILABLE_MIN_FRAME_DURATIONS}
+     * (with its respective size/format). Let this set of frame durations be
+     * called <code>F</code>.</li>
+     * <li>For any given request <code>R</code>, the minimum frame duration allowed
+     * for <code>R</code> is the maximum out of all values in <code>F</code>. Let the streams
+     * used in <code>R</code> be called <code>S_r</code>.</li>
+     * </ol>
+     * <p>If none of the streams in <code>S_r</code> have a stall time (listed in {@link
+     * ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS}
+     * using its respective size/format), then the frame duration in <code>F</code>
+     * determines the steady state frame rate that the application will get
+     * if it uses <code>R</code> as a repeating request. Let this special kind of
+     * request be called <code>Rsimple</code>.</p>
+     * <p>A repeating request <code>Rsimple</code> can be <em>occasionally</em> interleaved
+     * by a single capture of a new request <code>Rstall</code> (which has at least
+     * one in-use stream with a non-0 stall time) and if <code>Rstall</code> has the
+     * same minimum frame duration this will not cause a frame rate loss
+     * if all buffers from the previous <code>Rstall</code> have already been
+     * delivered.</p>
+     * <p>For more details about stalling, see
+     * {@link ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS}.</p>
+     * <p>This control is only effective if ACAMERA_CONTROL_AE_MODE or ACAMERA_CONTROL_MODE is set to
+     * OFF; otherwise the auto-exposure algorithm will override this value.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_MODE
+     * @see ACAMERA_CONTROL_MODE
+     */
+    ACAMERA_SENSOR_FRAME_DURATION =                             // int64
+            ACAMERA_SENSOR_START + 1,
+    /**
+     * <p>The amount of gain applied to sensor data
+     * before processing.</p>
+     *
+     * <p>Type: int32</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>The sensitivity is the standard ISO sensitivity value,
+     * as defined in ISO 12232:2006.</p>
+     * <p>The sensitivity must be within ACAMERA_SENSOR_INFO_SENSITIVITY_RANGE, and
+     * if if it less than ACAMERA_SENSOR_MAX_ANALOG_SENSITIVITY, the camera device
+     * is guaranteed to use only analog amplification for applying the gain.</p>
+     * <p>If the camera device cannot apply the exact sensitivity
+     * requested, it will reduce the gain to the nearest supported
+     * value. The final sensitivity used will be available in the
+     * output capture result.</p>
+     * <p>This control is only effective if ACAMERA_CONTROL_AE_MODE or ACAMERA_CONTROL_MODE is set to
+     * OFF; otherwise the auto-exposure algorithm will override this value.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_MODE
+     * @see ACAMERA_CONTROL_MODE
+     * @see ACAMERA_SENSOR_INFO_SENSITIVITY_RANGE
+     * @see ACAMERA_SENSOR_MAX_ANALOG_SENSITIVITY
+     */
+    ACAMERA_SENSOR_SENSITIVITY =                                // int32
+            ACAMERA_SENSOR_START + 2,
+    /**
+     * <p>The standard reference illuminant used as the scene light source when
+     * calculating the ACAMERA_SENSOR_COLOR_TRANSFORM1,
+     * ACAMERA_SENSOR_CALIBRATION_TRANSFORM1, and
+     * ACAMERA_SENSOR_FORWARD_MATRIX1 matrices.</p>
+     *
+     * @see ACAMERA_SENSOR_CALIBRATION_TRANSFORM1
+     * @see ACAMERA_SENSOR_COLOR_TRANSFORM1
+     * @see ACAMERA_SENSOR_FORWARD_MATRIX1
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_sensor_reference_illuminant1_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>The values in this key correspond to the values defined for the
+     * EXIF LightSource tag. These illuminants are standard light sources
+     * that are often used calibrating camera devices.</p>
+     * <p>If this key is present, then ACAMERA_SENSOR_COLOR_TRANSFORM1,
+     * ACAMERA_SENSOR_CALIBRATION_TRANSFORM1, and
+     * ACAMERA_SENSOR_FORWARD_MATRIX1 will also be present.</p>
+     * <p>Some devices may choose to provide a second set of calibration
+     * information for improved quality, including
+     * ACAMERA_SENSOR_REFERENCE_ILLUMINANT2 and its corresponding matrices.</p>
+     *
+     * @see ACAMERA_SENSOR_CALIBRATION_TRANSFORM1
+     * @see ACAMERA_SENSOR_COLOR_TRANSFORM1
+     * @see ACAMERA_SENSOR_FORWARD_MATRIX1
+     * @see ACAMERA_SENSOR_REFERENCE_ILLUMINANT2
+     */
+    ACAMERA_SENSOR_REFERENCE_ILLUMINANT1 =                      // byte (acamera_metadata_enum_android_sensor_reference_illuminant1_t)
+            ACAMERA_SENSOR_START + 3,
+    /**
+     * <p>The standard reference illuminant used as the scene light source when
+     * calculating the ACAMERA_SENSOR_COLOR_TRANSFORM2,
+     * ACAMERA_SENSOR_CALIBRATION_TRANSFORM2, and
+     * ACAMERA_SENSOR_FORWARD_MATRIX2 matrices.</p>
+     *
+     * @see ACAMERA_SENSOR_CALIBRATION_TRANSFORM2
+     * @see ACAMERA_SENSOR_COLOR_TRANSFORM2
+     * @see ACAMERA_SENSOR_FORWARD_MATRIX2
+     *
+     * <p>Type: byte</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>See ACAMERA_SENSOR_REFERENCE_ILLUMINANT1 for more details.</p>
+     * <p>If this key is present, then ACAMERA_SENSOR_COLOR_TRANSFORM2,
+     * ACAMERA_SENSOR_CALIBRATION_TRANSFORM2, and
+     * ACAMERA_SENSOR_FORWARD_MATRIX2 will also be present.</p>
+     *
+     * @see ACAMERA_SENSOR_CALIBRATION_TRANSFORM2
+     * @see ACAMERA_SENSOR_COLOR_TRANSFORM2
+     * @see ACAMERA_SENSOR_FORWARD_MATRIX2
+     * @see ACAMERA_SENSOR_REFERENCE_ILLUMINANT1
+     */
+    ACAMERA_SENSOR_REFERENCE_ILLUMINANT2 =                      // byte
+            ACAMERA_SENSOR_START + 4,
+    /**
+     * <p>A per-device calibration transform matrix that maps from the
+     * reference sensor colorspace to the actual device sensor colorspace.</p>
+     *
+     * <p>Type: rational[3*3]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>This matrix is used to correct for per-device variations in the
+     * sensor colorspace, and is used for processing raw buffer data.</p>
+     * <p>The matrix is expressed as a 3x3 matrix in row-major-order, and
+     * contains a per-device calibration transform that maps colors
+     * from reference sensor color space (i.e. the "golden module"
+     * colorspace) into this camera device's native sensor color
+     * space under the first reference illuminant
+     * (ACAMERA_SENSOR_REFERENCE_ILLUMINANT1).</p>
+     *
+     * @see ACAMERA_SENSOR_REFERENCE_ILLUMINANT1
+     */
+    ACAMERA_SENSOR_CALIBRATION_TRANSFORM1 =                     // rational[3*3]
+            ACAMERA_SENSOR_START + 5,
+    /**
+     * <p>A per-device calibration transform matrix that maps from the
+     * reference sensor colorspace to the actual device sensor colorspace
+     * (this is the colorspace of the raw buffer data).</p>
+     *
+     * <p>Type: rational[3*3]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>This matrix is used to correct for per-device variations in the
+     * sensor colorspace, and is used for processing raw buffer data.</p>
+     * <p>The matrix is expressed as a 3x3 matrix in row-major-order, and
+     * contains a per-device calibration transform that maps colors
+     * from reference sensor color space (i.e. the "golden module"
+     * colorspace) into this camera device's native sensor color
+     * space under the second reference illuminant
+     * (ACAMERA_SENSOR_REFERENCE_ILLUMINANT2).</p>
+     * <p>This matrix will only be present if the second reference
+     * illuminant is present.</p>
+     *
+     * @see ACAMERA_SENSOR_REFERENCE_ILLUMINANT2
+     */
+    ACAMERA_SENSOR_CALIBRATION_TRANSFORM2 =                     // rational[3*3]
+            ACAMERA_SENSOR_START + 6,
+    /**
+     * <p>A matrix that transforms color values from CIE XYZ color space to
+     * reference sensor color space.</p>
+     *
+     * <p>Type: rational[3*3]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>This matrix is used to convert from the standard CIE XYZ color
+     * space to the reference sensor colorspace, and is used when processing
+     * raw buffer data.</p>
+     * <p>The matrix is expressed as a 3x3 matrix in row-major-order, and
+     * contains a color transform matrix that maps colors from the CIE
+     * XYZ color space to the reference sensor color space (i.e. the
+     * "golden module" colorspace) under the first reference illuminant
+     * (ACAMERA_SENSOR_REFERENCE_ILLUMINANT1).</p>
+     * <p>The white points chosen in both the reference sensor color space
+     * and the CIE XYZ colorspace when calculating this transform will
+     * match the standard white point for the first reference illuminant
+     * (i.e. no chromatic adaptation will be applied by this transform).</p>
+     *
+     * @see ACAMERA_SENSOR_REFERENCE_ILLUMINANT1
+     */
+    ACAMERA_SENSOR_COLOR_TRANSFORM1 =                           // rational[3*3]
+            ACAMERA_SENSOR_START + 7,
+    /**
+     * <p>A matrix that transforms color values from CIE XYZ color space to
+     * reference sensor color space.</p>
+     *
+     * <p>Type: rational[3*3]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>This matrix is used to convert from the standard CIE XYZ color
+     * space to the reference sensor colorspace, and is used when processing
+     * raw buffer data.</p>
+     * <p>The matrix is expressed as a 3x3 matrix in row-major-order, and
+     * contains a color transform matrix that maps colors from the CIE
+     * XYZ color space to the reference sensor color space (i.e. the
+     * "golden module" colorspace) under the second reference illuminant
+     * (ACAMERA_SENSOR_REFERENCE_ILLUMINANT2).</p>
+     * <p>The white points chosen in both the reference sensor color space
+     * and the CIE XYZ colorspace when calculating this transform will
+     * match the standard white point for the second reference illuminant
+     * (i.e. no chromatic adaptation will be applied by this transform).</p>
+     * <p>This matrix will only be present if the second reference
+     * illuminant is present.</p>
+     *
+     * @see ACAMERA_SENSOR_REFERENCE_ILLUMINANT2
+     */
+    ACAMERA_SENSOR_COLOR_TRANSFORM2 =                           // rational[3*3]
+            ACAMERA_SENSOR_START + 8,
+    /**
+     * <p>A matrix that transforms white balanced camera colors from the reference
+     * sensor colorspace to the CIE XYZ colorspace with a D50 whitepoint.</p>
+     *
+     * <p>Type: rational[3*3]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>This matrix is used to convert to the standard CIE XYZ colorspace, and
+     * is used when processing raw buffer data.</p>
+     * <p>This matrix is expressed as a 3x3 matrix in row-major-order, and contains
+     * a color transform matrix that maps white balanced colors from the
+     * reference sensor color space to the CIE XYZ color space with a D50 white
+     * point.</p>
+     * <p>Under the first reference illuminant (ACAMERA_SENSOR_REFERENCE_ILLUMINANT1)
+     * this matrix is chosen so that the standard white point for this reference
+     * illuminant in the reference sensor colorspace is mapped to D50 in the
+     * CIE XYZ colorspace.</p>
+     *
+     * @see ACAMERA_SENSOR_REFERENCE_ILLUMINANT1
+     */
+    ACAMERA_SENSOR_FORWARD_MATRIX1 =                            // rational[3*3]
+            ACAMERA_SENSOR_START + 9,
+    /**
+     * <p>A matrix that transforms white balanced camera colors from the reference
+     * sensor colorspace to the CIE XYZ colorspace with a D50 whitepoint.</p>
+     *
+     * <p>Type: rational[3*3]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>This matrix is used to convert to the standard CIE XYZ colorspace, and
+     * is used when processing raw buffer data.</p>
+     * <p>This matrix is expressed as a 3x3 matrix in row-major-order, and contains
+     * a color transform matrix that maps white balanced colors from the
+     * reference sensor color space to the CIE XYZ color space with a D50 white
+     * point.</p>
+     * <p>Under the second reference illuminant (ACAMERA_SENSOR_REFERENCE_ILLUMINANT2)
+     * this matrix is chosen so that the standard white point for this reference
+     * illuminant in the reference sensor colorspace is mapped to D50 in the
+     * CIE XYZ colorspace.</p>
+     * <p>This matrix will only be present if the second reference
+     * illuminant is present.</p>
+     *
+     * @see ACAMERA_SENSOR_REFERENCE_ILLUMINANT2
+     */
+    ACAMERA_SENSOR_FORWARD_MATRIX2 =                            // rational[3*3]
+            ACAMERA_SENSOR_START + 10,
+    /**
+     * <p>A fixed black level offset for each of the color filter arrangement
+     * (CFA) mosaic channels.</p>
+     *
+     * <p>Type: int32[4]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>This key specifies the zero light value for each of the CFA mosaic
+     * channels in the camera sensor.  The maximal value output by the
+     * sensor is represented by the value in ACAMERA_SENSOR_INFO_WHITE_LEVEL.</p>
+     * <p>The values are given in the same order as channels listed for the CFA
+     * layout key (see ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT), i.e. the
+     * nth value given corresponds to the black level offset for the nth
+     * color channel listed in the CFA.</p>
+     * <p>The black level values of captured images may vary for different
+     * capture settings (e.g., ACAMERA_SENSOR_SENSITIVITY). This key
+     * represents a coarse approximation for such case. It is recommended to
+     * use ACAMERA_SENSOR_DYNAMIC_BLACK_LEVEL or use pixels from
+     * ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS directly for captures when
+     * supported by the camera device, which provides more accurate black
+     * level values. For raw capture in particular, it is recommended to use
+     * pixels from ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS to calculate black
+     * level values for each frame.</p>
+     *
+     * @see ACAMERA_SENSOR_DYNAMIC_BLACK_LEVEL
+     * @see ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
+     * @see ACAMERA_SENSOR_INFO_WHITE_LEVEL
+     * @see ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS
+     * @see ACAMERA_SENSOR_SENSITIVITY
+     */
+    ACAMERA_SENSOR_BLACK_LEVEL_PATTERN =                        // int32[4]
+            ACAMERA_SENSOR_START + 12,
+    /**
+     * <p>Maximum sensitivity that is implemented
+     * purely through analog gain.</p>
+     *
+     * <p>Type: int32</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>For ACAMERA_SENSOR_SENSITIVITY values less than or
+     * equal to this, all applied gain must be analog. For
+     * values above this, the gain applied can be a mix of analog and
+     * digital.</p>
+     *
+     * @see ACAMERA_SENSOR_SENSITIVITY
+     */
+    ACAMERA_SENSOR_MAX_ANALOG_SENSITIVITY =                     // int32
+            ACAMERA_SENSOR_START + 13,
+    /**
+     * <p>Clockwise angle through which the output image needs to be rotated to be
+     * upright on the device screen in its native orientation.</p>
+     *
+     * <p>Type: int32</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>Also defines the direction of rolling shutter readout, which is from top to bottom in
+     * the sensor's coordinate system.</p>
+     */
+    ACAMERA_SENSOR_ORIENTATION =                                // int32
+            ACAMERA_SENSOR_START + 14,
+    /**
+     * <p>Time at start of exposure of first
+     * row of the image sensor active array, in nanoseconds.</p>
+     *
+     * <p>Type: int64</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>The timestamps are also included in all image
+     * buffers produced for the same capture, and will be identical
+     * on all the outputs.</p>
+     * <p>When ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE <code>==</code> UNKNOWN,
+     * the timestamps measure time since an unspecified starting point,
+     * and are monotonically increasing. They can be compared with the
+     * timestamps for other captures from the same camera device, but are
+     * not guaranteed to be comparable to any other time source.</p>
+     * <p>When ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE <code>==</code> REALTIME, the
+     * timestamps measure time in the same timebase as
+     * <a href="https://developer.android.com/reference/android/os/SystemClock.html#elapsedRealtimeNanos">elapsedRealtimeNanos</a>
+     * (or CLOCK_BOOTTIME), and they can
+     * be compared to other timestamps from other subsystems that
+     * are using that base.</p>
+     * <p>For reprocessing, the timestamp will match the start of exposure of
+     * the input image, i.e. {@link CaptureResult#SENSOR_TIMESTAMP the
+     * timestamp} in the TotalCaptureResult that was used to create the
+     * reprocess capture request.</p>
+     *
+     * @see ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE
+     */
+    ACAMERA_SENSOR_TIMESTAMP =                                  // int64
+            ACAMERA_SENSOR_START + 16,
+    /**
+     * <p>The estimated camera neutral color in the native sensor colorspace at
+     * the time of capture.</p>
+     *
+     * <p>Type: rational[3]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>This value gives the neutral color point encoded as an RGB value in the
+     * native sensor color space.  The neutral color point indicates the
+     * currently estimated white point of the scene illumination.  It can be
+     * used to interpolate between the provided color transforms when
+     * processing raw sensor data.</p>
+     * <p>The order of the values is R, G, B; where R is in the lowest index.</p>
+     */
+    ACAMERA_SENSOR_NEUTRAL_COLOR_POINT =                        // rational[3]
+            ACAMERA_SENSOR_START + 18,
+    /**
+     * <p>Noise model coefficients for each CFA mosaic channel.</p>
+     *
+     * <p>Type: double[2*CFA Channels]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>This key contains two noise model coefficients for each CFA channel
+     * corresponding to the sensor amplification (S) and sensor readout
+     * noise (O).  These are given as pairs of coefficients for each channel
+     * in the same order as channels listed for the CFA layout key
+     * (see ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT).  This is
+     * represented as an array of Pair&lt;Double, Double&gt;, where
+     * the first member of the Pair at index n is the S coefficient and the
+     * second member is the O coefficient for the nth color channel in the CFA.</p>
+     * <p>These coefficients are used in a two parameter noise model to describe
+     * the amount of noise present in the image for each CFA channel.  The
+     * noise model used here is:</p>
+     * <p>N(x) = sqrt(Sx + O)</p>
+     * <p>Where x represents the recorded signal of a CFA channel normalized to
+     * the range [0, 1], and S and O are the noise model coeffiecients for
+     * that channel.</p>
+     * <p>A more detailed description of the noise model can be found in the
+     * Adobe DNG specification for the NoiseProfile tag.</p>
+     *
+     * @see ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
+     */
+    ACAMERA_SENSOR_NOISE_PROFILE =                              // double[2*CFA Channels]
+            ACAMERA_SENSOR_START + 19,
+    /**
+     * <p>The worst-case divergence between Bayer green channels.</p>
+     *
+     * <p>Type: float</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>This value is an estimate of the worst case split between the
+     * Bayer green channels in the red and blue rows in the sensor color
+     * filter array.</p>
+     * <p>The green split is calculated as follows:</p>
+     * <ol>
+     * <li>A 5x5 pixel (or larger) window W within the active sensor array is
+     * chosen. The term 'pixel' here is taken to mean a group of 4 Bayer
+     * mosaic channels (R, Gr, Gb, B).  The location and size of the window
+     * chosen is implementation defined, and should be chosen to provide a
+     * green split estimate that is both representative of the entire image
+     * for this camera sensor, and can be calculated quickly.</li>
+     * <li>The arithmetic mean of the green channels from the red
+     * rows (mean_Gr) within W is computed.</li>
+     * <li>The arithmetic mean of the green channels from the blue
+     * rows (mean_Gb) within W is computed.</li>
+     * <li>The maximum ratio R of the two means is computed as follows:
+     * <code>R = max((mean_Gr + 1)/(mean_Gb + 1), (mean_Gb + 1)/(mean_Gr + 1))</code></li>
+     * </ol>
+     * <p>The ratio R is the green split divergence reported for this property,
+     * which represents how much the green channels differ in the mosaic
+     * pattern.  This value is typically used to determine the treatment of
+     * the green mosaic channels when demosaicing.</p>
+     * <p>The green split value can be roughly interpreted as follows:</p>
+     * <ul>
+     * <li>R &lt; 1.03 is a negligible split (&lt;3% divergence).</li>
+     * <li>1.20 &lt;= R &gt;= 1.03 will require some software
+     * correction to avoid demosaic errors (3-20% divergence).</li>
+     * <li>R &gt; 1.20 will require strong software correction to produce
+     * a usuable image (&gt;20% divergence).</li>
+     * </ul>
+     */
+    ACAMERA_SENSOR_GREEN_SPLIT =                                // float
+            ACAMERA_SENSOR_START + 22,
+    /**
+     * <p>A pixel <code>[R, G_even, G_odd, B]</code> that supplies the test pattern
+     * when ACAMERA_SENSOR_TEST_PATTERN_MODE is SOLID_COLOR.</p>
+     *
+     * @see ACAMERA_SENSOR_TEST_PATTERN_MODE
+     *
+     * <p>Type: int32[4]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>Each color channel is treated as an unsigned 32-bit integer.
+     * The camera device then uses the most significant X bits
+     * that correspond to how many bits are in its Bayer raw sensor
+     * output.</p>
+     * <p>For example, a sensor with RAW10 Bayer output would use the
+     * 10 most significant bits from each color channel.</p>
+     */
+    ACAMERA_SENSOR_TEST_PATTERN_DATA =                          // int32[4]
+            ACAMERA_SENSOR_START + 23,
+    /**
+     * <p>When enabled, the sensor sends a test pattern instead of
+     * doing a real exposure from the camera.</p>
+     *
+     * <p>Type: int32 (acamera_metadata_enum_android_sensor_test_pattern_mode_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>When a test pattern is enabled, all manual sensor controls specified
+     * by ACAMERA_SENSOR_* will be ignored. All other controls should
+     * work as normal.</p>
+     * <p>For example, if manual flash is enabled, flash firing should still
+     * occur (and that the test pattern remain unmodified, since the flash
+     * would not actually affect it).</p>
+     * <p>Defaults to OFF.</p>
+     */
+    ACAMERA_SENSOR_TEST_PATTERN_MODE =                          // int32 (acamera_metadata_enum_android_sensor_test_pattern_mode_t)
+            ACAMERA_SENSOR_START + 24,
+    /**
+     * <p>List of sensor test pattern modes for ACAMERA_SENSOR_TEST_PATTERN_MODE
+     * supported by this camera device.</p>
+     *
+     * @see ACAMERA_SENSOR_TEST_PATTERN_MODE
+     *
+     * <p>Type: int32[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>Defaults to OFF, and always includes OFF if defined.</p>
+     */
+    ACAMERA_SENSOR_AVAILABLE_TEST_PATTERN_MODES =               // int32[n]
+            ACAMERA_SENSOR_START + 25,
+    /**
+     * <p>Duration between the start of first row exposure
+     * and the start of last row exposure.</p>
+     *
+     * <p>Type: int64</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>This is the exposure time skew between the first and last
+     * row exposure start times. The first row and the last row are
+     * the first and last rows inside of the
+     * ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.</p>
+     * <p>For typical camera sensors that use rolling shutters, this is also equivalent
+     * to the frame readout time.</p>
+     *
+     * @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+     */
+    ACAMERA_SENSOR_ROLLING_SHUTTER_SKEW =                       // int64
+            ACAMERA_SENSOR_START + 26,
+    /**
+     * <p>List of disjoint rectangles indicating the sensor
+     * optically shielded black pixel regions.</p>
+     *
+     * <p>Type: int32[4*num_regions]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>In most camera sensors, the active array is surrounded by some
+     * optically shielded pixel areas. By blocking light, these pixels
+     * provides a reliable black reference for black level compensation
+     * in active array region.</p>
+     * <p>The data representation is int[4], which maps to (left, top, width, height).</p>
+     * <p>This key provides a list of disjoint rectangles specifying the
+     * regions of optically shielded (with metal shield) black pixel
+     * regions if the camera device is capable of reading out these black
+     * pixels in the output raw images. In comparison to the fixed black
+     * level values reported by ACAMERA_SENSOR_BLACK_LEVEL_PATTERN, this key
+     * may provide a more accurate way for the application to calculate
+     * black level of each captured raw images.</p>
+     * <p>When this key is reported, the ACAMERA_SENSOR_DYNAMIC_BLACK_LEVEL and
+     * ACAMERA_SENSOR_DYNAMIC_WHITE_LEVEL will also be reported.</p>
+     *
+     * @see ACAMERA_SENSOR_BLACK_LEVEL_PATTERN
+     * @see ACAMERA_SENSOR_DYNAMIC_BLACK_LEVEL
+     * @see ACAMERA_SENSOR_DYNAMIC_WHITE_LEVEL
+     */
+    ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS =                      // int32[4*num_regions]
+            ACAMERA_SENSOR_START + 27,
+    /**
+     * <p>A per-frame dynamic black level offset for each of the color filter
+     * arrangement (CFA) mosaic channels.</p>
+     *
+     * <p>Type: float[4]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>Camera sensor black levels may vary dramatically for different
+     * capture settings (e.g. ACAMERA_SENSOR_SENSITIVITY). The fixed black
+     * level reported by ACAMERA_SENSOR_BLACK_LEVEL_PATTERN may be too
+     * inaccurate to represent the actual value on a per-frame basis. The
+     * camera device internal pipeline relies on reliable black level values
+     * to process the raw images appropriately. To get the best image
+     * quality, the camera device may choose to estimate the per frame black
+     * level values either based on optically shielded black regions
+     * (ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS) or its internal model.</p>
+     * <p>This key reports the camera device estimated per-frame zero light
+     * value for each of the CFA mosaic channels in the camera sensor. The
+     * ACAMERA_SENSOR_BLACK_LEVEL_PATTERN may only represent a coarse
+     * approximation of the actual black level values. This value is the
+     * black level used in camera device internal image processing pipeline
+     * and generally more accurate than the fixed black level values.
+     * However, since they are estimated values by the camera device, they
+     * may not be as accurate as the black level values calculated from the
+     * optical black pixels reported by ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS.</p>
+     * <p>The values are given in the same order as channels listed for the CFA
+     * layout key (see ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT), i.e. the
+     * nth value given corresponds to the black level offset for the nth
+     * color channel listed in the CFA.</p>
+     * <p>This key will be available if ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS is
+     * available or the camera device advertises this key via
+     * {@link ACAMERA_REQUEST_AVAILABLE_RESULT_KEYS}.</p>
+     *
+     * @see ACAMERA_SENSOR_BLACK_LEVEL_PATTERN
+     * @see ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
+     * @see ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS
+     * @see ACAMERA_SENSOR_SENSITIVITY
+     */
+    ACAMERA_SENSOR_DYNAMIC_BLACK_LEVEL =                        // float[4]
+            ACAMERA_SENSOR_START + 28,
+    /**
+     * <p>Maximum raw value output by sensor for this frame.</p>
+     *
+     * <p>Type: int32</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>Since the ACAMERA_SENSOR_BLACK_LEVEL_PATTERN may change for different
+     * capture settings (e.g., ACAMERA_SENSOR_SENSITIVITY), the white
+     * level will change accordingly. This key is similar to
+     * ACAMERA_SENSOR_INFO_WHITE_LEVEL, but specifies the camera device
+     * estimated white level for each frame.</p>
+     * <p>This key will be available if ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS is
+     * available or the camera device advertises this key via
+     * {@link ACAMERA_REQUEST_AVAILABLE_RESULT_KEYS}.</p>
+     *
+     * @see ACAMERA_SENSOR_BLACK_LEVEL_PATTERN
+     * @see ACAMERA_SENSOR_INFO_WHITE_LEVEL
+     * @see ACAMERA_SENSOR_OPTICAL_BLACK_REGIONS
+     * @see ACAMERA_SENSOR_SENSITIVITY
+     */
+    ACAMERA_SENSOR_DYNAMIC_WHITE_LEVEL =                        // int32
+            ACAMERA_SENSOR_START + 29,
+    ACAMERA_SENSOR_END,
+
+    /**
+     * <p>The area of the image sensor which corresponds to active pixels after any geometric
+     * distortion correction has been applied.</p>
+     *
+     * <p>Type: int32[4]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>This is the rectangle representing the size of the active region of the sensor (i.e.
+     * the region that actually receives light from the scene) after any geometric correction
+     * has been applied, and should be treated as the maximum size in pixels of any of the
+     * image output formats aside from the raw formats.</p>
+     * <p>This rectangle is defined relative to the full pixel array; (0,0) is the top-left of
+     * the full pixel array, and the size of the full pixel array is given by
+     * ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE.</p>
+     * <p>The data representation is int[4], which maps to (left, top, width, height).</p>
+     * <p>The coordinate system for most other keys that list pixel coordinates, including
+     * ACAMERA_SCALER_CROP_REGION, is defined relative to the active array rectangle given in
+     * this field, with <code>(0, 0)</code> being the top-left of this rectangle.</p>
+     * <p>The active array may be smaller than the full pixel array, since the full array may
+     * include black calibration pixels or other inactive regions, and geometric correction
+     * resulting in scaling or cropping may have been applied.</p>
+     *
+     * @see ACAMERA_SCALER_CROP_REGION
+     * @see ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE
+     */
+    ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE =                     // int32[4]
+            ACAMERA_SENSOR_INFO_START,
+    /**
+     * <p>Range of sensitivities for ACAMERA_SENSOR_SENSITIVITY supported by this
+     * camera device.</p>
+     *
+     * @see ACAMERA_SENSOR_SENSITIVITY
+     *
+     * <p>Type: int32[2]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>The values are the standard ISO sensitivity values,
+     * as defined in ISO 12232:2006.</p>
+     */
+    ACAMERA_SENSOR_INFO_SENSITIVITY_RANGE =                     // int32[2]
+            ACAMERA_SENSOR_INFO_START + 1,
+    /**
+     * <p>The arrangement of color filters on sensor;
+     * represents the colors in the top-left 2x2 section of
+     * the sensor, in reading order.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_sensor_info_color_filter_arrangement_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     */
+    ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT =              // byte (acamera_metadata_enum_android_sensor_info_color_filter_arrangement_t)
+            ACAMERA_SENSOR_INFO_START + 2,
+    /**
+     * <p>The range of image exposure times for ACAMERA_SENSOR_EXPOSURE_TIME supported
+     * by this camera device.</p>
+     *
+     * @see ACAMERA_SENSOR_EXPOSURE_TIME
+     *
+     * <p>Type: int64[2]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     */
+    ACAMERA_SENSOR_INFO_EXPOSURE_TIME_RANGE =                   // int64[2]
+            ACAMERA_SENSOR_INFO_START + 3,
+    /**
+     * <p>The maximum possible frame duration (minimum frame rate) for
+     * ACAMERA_SENSOR_FRAME_DURATION that is supported this camera device.</p>
+     *
+     * @see ACAMERA_SENSOR_FRAME_DURATION
+     *
+     * <p>Type: int64</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>Attempting to use frame durations beyond the maximum will result in the frame
+     * duration being clipped to the maximum. See that control for a full definition of frame
+     * durations.</p>
+     * <p>Refer to {@link
+     * ACAMERA_SCALER_AVAILABLE_MIN_FRAME_DURATIONS}
+     * for the minimum frame duration values.</p>
+     */
+    ACAMERA_SENSOR_INFO_MAX_FRAME_DURATION =                    // int64
+            ACAMERA_SENSOR_INFO_START + 4,
+    /**
+     * <p>The physical dimensions of the full pixel
+     * array.</p>
+     *
+     * <p>Type: float[2]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>This is the physical size of the sensor pixel
+     * array defined by ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE.</p>
+     *
+     * @see ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE
+     */
+    ACAMERA_SENSOR_INFO_PHYSICAL_SIZE =                         // float[2]
+            ACAMERA_SENSOR_INFO_START + 5,
+    /**
+     * <p>Dimensions of the full pixel array, possibly
+     * including black calibration pixels.</p>
+     *
+     * <p>Type: int32[2]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>The pixel count of the full pixel array of the image sensor, which covers
+     * ACAMERA_SENSOR_INFO_PHYSICAL_SIZE area.  This represents the full pixel dimensions of
+     * the raw buffers produced by this sensor.</p>
+     * <p>If a camera device supports raw sensor formats, either this or
+     * ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE is the maximum dimensions for the raw
+     * output formats listed in ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS (this depends on
+     * whether or not the image sensor returns buffers containing pixels that are not
+     * part of the active array region for blacklevel calibration or other purposes).</p>
+     * <p>Some parts of the full pixel array may not receive light from the scene,
+     * or be otherwise inactive.  The ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE key
+     * defines the rectangle of active pixels that will be included in processed image
+     * formats.</p>
+     *
+     * @see ACAMERA_SENSOR_INFO_PHYSICAL_SIZE
+     * @see ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE
+     */
+    ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE =                      // int32[2]
+            ACAMERA_SENSOR_INFO_START + 6,
+    /**
+     * <p>Maximum raw value output by sensor.</p>
+     *
+     * <p>Type: int32</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>This specifies the fully-saturated encoding level for the raw
+     * sample values from the sensor.  This is typically caused by the
+     * sensor becoming highly non-linear or clipping. The minimum for
+     * each channel is specified by the offset in the
+     * ACAMERA_SENSOR_BLACK_LEVEL_PATTERN key.</p>
+     * <p>The white level is typically determined either by sensor bit depth
+     * (8-14 bits is expected), or by the point where the sensor response
+     * becomes too non-linear to be useful.  The default value for this is
+     * maximum representable value for a 16-bit raw sample (2^16 - 1).</p>
+     * <p>The white level values of captured images may vary for different
+     * capture settings (e.g., ACAMERA_SENSOR_SENSITIVITY). This key
+     * represents a coarse approximation for such case. It is recommended
+     * to use ACAMERA_SENSOR_DYNAMIC_WHITE_LEVEL for captures when supported
+     * by the camera device, which provides more accurate white level values.</p>
+     *
+     * @see ACAMERA_SENSOR_BLACK_LEVEL_PATTERN
+     * @see ACAMERA_SENSOR_DYNAMIC_WHITE_LEVEL
+     * @see ACAMERA_SENSOR_SENSITIVITY
+     */
+    ACAMERA_SENSOR_INFO_WHITE_LEVEL =                           // int32
+            ACAMERA_SENSOR_INFO_START + 7,
+    /**
+     * <p>The time base source for sensor capture start timestamps.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_sensor_info_timestamp_source_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>The timestamps provided for captures are always in nanoseconds and monotonic, but
+     * may not based on a time source that can be compared to other system time sources.</p>
+     * <p>This characteristic defines the source for the timestamps, and therefore whether they
+     * can be compared against other system time sources/timestamps.</p>
+     */
+    ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE =                      // byte (acamera_metadata_enum_android_sensor_info_timestamp_source_t)
+            ACAMERA_SENSOR_INFO_START + 8,
+    /**
+     * <p>Whether the RAW images output from this camera device are subject to
+     * lens shading correction.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_sensor_info_lens_shading_applied_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>If TRUE, all images produced by the camera device in the RAW image formats will
+     * have lens shading correction already applied to it. If FALSE, the images will
+     * not be adjusted for lens shading correction.
+     * See android.request.maxNumOutputRaw for a list of RAW image formats.</p>
+     * <p>This key will be <code>null</code> for all devices do not report this information.
+     * Devices with RAW capability will always report this information in this key.</p>
+     */
+    ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED =                  // byte (acamera_metadata_enum_android_sensor_info_lens_shading_applied_t)
+            ACAMERA_SENSOR_INFO_START + 9,
+    /**
+     * <p>The area of the image sensor which corresponds to active pixels prior to the
+     * application of any geometric distortion correction.</p>
+     *
+     * <p>Type: int32[4]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>The data representation is int[4], which maps to (left, top, width, height).</p>
+     * <p>This is the rectangle representing the size of the active region of the sensor (i.e.
+     * the region that actually receives light from the scene) before any geometric correction
+     * has been applied, and should be treated as the active region rectangle for any of the
+     * raw formats.  All metadata associated with raw processing (e.g. the lens shading
+     * correction map, and radial distortion fields) treats the top, left of this rectangle as
+     * the origin, (0,0).</p>
+     * <p>The size of this region determines the maximum field of view and the maximum number of
+     * pixels that an image from this sensor can contain, prior to the application of
+     * geometric distortion correction. The effective maximum pixel dimensions of a
+     * post-distortion-corrected image is given by the ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+     * field, and the effective maximum field of view for a post-distortion-corrected image
+     * can be calculated by applying the geometric distortion correction fields to this
+     * rectangle, and cropping to the rectangle given in ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.</p>
+     * <p>E.g. to calculate position of a pixel, (x,y), in a processed YUV output image with the
+     * dimensions in ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE given the position of a pixel,
+     * (x', y'), in the raw pixel array with dimensions give in
+     * ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE:</p>
+     * <ol>
+     * <li>Choose a pixel (x', y') within the active array region of the raw buffer given in
+     * ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE, otherwise this pixel is considered
+     * to be outside of the FOV, and will not be shown in the processed output image.</li>
+     * <li>Apply geometric distortion correction to get the post-distortion pixel coordinate,
+     * (x_i, y_i). When applying geometric correction metadata, note that metadata for raw
+     * buffers is defined relative to the top, left of the
+     * ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE rectangle.</li>
+     * <li>If the resulting corrected pixel coordinate is within the region given in
+     * ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE, then the position of this pixel in the
+     * processed output image buffer is <code>(x_i - activeArray.left, y_i - activeArray.top)</code>,
+     * when the top, left coordinate of that buffer is treated as (0, 0).</li>
+     * </ol>
+     * <p>Thus, for pixel x',y' = (25, 25) on a sensor where ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE
+     * is (100,100), ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE is (10, 10, 100, 100),
+     * ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE is (20, 20, 80, 80), and the geometric distortion
+     * correction doesn't change the pixel coordinate, the resulting pixel selected in
+     * pixel coordinates would be x,y = (25, 25) relative to the top,left of the raw buffer
+     * with dimensions given in ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE, and would be (5, 5)
+     * relative to the top,left of post-processed YUV output buffer with dimensions given in
+     * ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.</p>
+     * <p>The currently supported fields that correct for geometric distortion are:</p>
+     * <ol>
+     * <li>ACAMERA_LENS_RADIAL_DISTORTION.</li>
+     * </ol>
+     * <p>If all of the geometric distortion fields are no-ops, this rectangle will be the same
+     * as the post-distortion-corrected rectangle given in
+     * ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.</p>
+     * <p>This rectangle is defined relative to the full pixel array; (0,0) is the top-left of
+     * the full pixel array, and the size of the full pixel array is given by
+     * ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE.</p>
+     * <p>The pre-correction active array may be smaller than the full pixel array, since the
+     * full array may include black calibration pixels or other inactive regions.</p>
+     *
+     * @see ACAMERA_LENS_RADIAL_DISTORTION
+     * @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+     * @see ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE
+     * @see ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE
+     */
+    ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE =      // int32[4]
+            ACAMERA_SENSOR_INFO_START + 10,
+    ACAMERA_SENSOR_INFO_END,
+
+    /**
+     * <p>Quality of lens shading correction applied
+     * to the image data.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_shading_mode_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>When set to OFF mode, no lens shading correction will be applied by the
+     * camera device, and an identity lens shading map data will be provided
+     * if <code>ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE == ON</code>. For example, for lens
+     * shading map with size of <code>[ 4, 3 ]</code>,
+     * the output android.statistics.lensShadingCorrectionMap for this case will be an identity
+     * map shown below:</p>
+     * <pre><code>[ 1.0, 1.0, 1.0, 1.0,  1.0, 1.0, 1.0, 1.0,
+     *  1.0, 1.0, 1.0, 1.0,  1.0, 1.0, 1.0, 1.0,
+     *  1.0, 1.0, 1.0, 1.0,  1.0, 1.0, 1.0, 1.0,
+     *  1.0, 1.0, 1.0, 1.0,  1.0, 1.0, 1.0, 1.0,
+     *  1.0, 1.0, 1.0, 1.0,  1.0, 1.0, 1.0, 1.0,
+     *  1.0, 1.0, 1.0, 1.0,  1.0, 1.0, 1.0, 1.0 ]
+     * </code></pre>
+     * <p>When set to other modes, lens shading correction will be applied by the camera
+     * device. Applications can request lens shading map data by setting
+     * ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE to ON, and then the camera device will provide lens
+     * shading map data in android.statistics.lensShadingCorrectionMap; the returned shading map
+     * data will be the one applied by the camera device for this capture request.</p>
+     * <p>The shading map data may depend on the auto-exposure (AE) and AWB statistics, therefore
+     * the reliability of the map data may be affected by the AE and AWB algorithms. When AE and
+     * AWB are in AUTO modes(ACAMERA_CONTROL_AE_MODE <code>!=</code> OFF and ACAMERA_CONTROL_AWB_MODE <code>!=</code>
+     * OFF), to get best results, it is recommended that the applications wait for the AE and AWB
+     * to be converged before using the returned shading map data.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_MODE
+     * @see ACAMERA_CONTROL_AWB_MODE
+     * @see ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE
+     */
+    ACAMERA_SHADING_MODE =                                      // byte (acamera_metadata_enum_android_shading_mode_t)
+            ACAMERA_SHADING_START,
+    /**
+     * <p>List of lens shading modes for ACAMERA_SHADING_MODE that are supported by this camera device.</p>
+     *
+     * @see ACAMERA_SHADING_MODE
+     *
+     * <p>Type: byte[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>This list contains lens shading modes that can be set for the camera device.
+     * Camera devices that support the MANUAL_POST_PROCESSING capability will always
+     * list OFF and FAST mode. This includes all FULL level devices.
+     * LEGACY devices will always only support FAST mode.</p>
+     */
+    ACAMERA_SHADING_AVAILABLE_MODES =                           // byte[n]
+            ACAMERA_SHADING_START + 2,
+    ACAMERA_SHADING_END,
+
+    /**
+     * <p>Operating mode for the face detector
+     * unit.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_statistics_face_detect_mode_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>Whether face detection is enabled, and whether it
+     * should output just the basic fields or the full set of
+     * fields.</p>
+     */
+    ACAMERA_STATISTICS_FACE_DETECT_MODE =                       // byte (acamera_metadata_enum_android_statistics_face_detect_mode_t)
+            ACAMERA_STATISTICS_START,
+    /**
+     * <p>Operating mode for hot pixel map generation.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_statistics_hot_pixel_map_mode_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>If set to <code>true</code>, a hot pixel map is returned in ACAMERA_STATISTICS_HOT_PIXEL_MAP.
+     * If set to <code>false</code>, no hot pixel map will be returned.</p>
+     *
+     * @see ACAMERA_STATISTICS_HOT_PIXEL_MAP
+     */
+    ACAMERA_STATISTICS_HOT_PIXEL_MAP_MODE =                     // byte (acamera_metadata_enum_android_statistics_hot_pixel_map_mode_t)
+            ACAMERA_STATISTICS_START + 3,
+    /**
+     * <p>List of unique IDs for detected faces.</p>
+     *
+     * <p>Type: int32[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>Each detected face is given a unique ID that is valid for as long as the face is visible
+     * to the camera device.  A face that leaves the field of view and later returns may be
+     * assigned a new ID.</p>
+     * <p>Only available if ACAMERA_STATISTICS_FACE_DETECT_MODE == FULL</p>
+     *
+     * @see ACAMERA_STATISTICS_FACE_DETECT_MODE
+     */
+    ACAMERA_STATISTICS_FACE_IDS =                               // int32[n]
+            ACAMERA_STATISTICS_START + 4,
+    /**
+     * <p>List of landmarks for detected
+     * faces.</p>
+     *
+     * <p>Type: int32[n*6]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>The coordinate system is that of ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE, with
+     * <code>(0, 0)</code> being the top-left pixel of the active array.</p>
+     * <p>Only available if ACAMERA_STATISTICS_FACE_DETECT_MODE == FULL</p>
+     *
+     * @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+     * @see ACAMERA_STATISTICS_FACE_DETECT_MODE
+     */
+    ACAMERA_STATISTICS_FACE_LANDMARKS =                         // int32[n*6]
+            ACAMERA_STATISTICS_START + 5,
+    /**
+     * <p>List of the bounding rectangles for detected
+     * faces.</p>
+     *
+     * <p>Type: int32[n*4]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>The data representation is int[4], which maps to (left, top, width, height).</p>
+     * <p>The coordinate system is that of ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE, with
+     * <code>(0, 0)</code> being the top-left pixel of the active array.</p>
+     * <p>Only available if ACAMERA_STATISTICS_FACE_DETECT_MODE != OFF</p>
+     *
+     * @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+     * @see ACAMERA_STATISTICS_FACE_DETECT_MODE
+     */
+    ACAMERA_STATISTICS_FACE_RECTANGLES =                        // int32[n*4]
+            ACAMERA_STATISTICS_START + 6,
+    /**
+     * <p>List of the face confidence scores for
+     * detected faces</p>
+     *
+     * <p>Type: byte[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>Only available if ACAMERA_STATISTICS_FACE_DETECT_MODE != OFF.</p>
+     *
+     * @see ACAMERA_STATISTICS_FACE_DETECT_MODE
+     */
+    ACAMERA_STATISTICS_FACE_SCORES =                            // byte[n]
+            ACAMERA_STATISTICS_START + 7,
+    /**
+     * <p>The shading map is a low-resolution floating-point map
+     * that lists the coefficients used to correct for vignetting and color shading,
+     * for each Bayer color channel of RAW image data.</p>
+     *
+     * <p>Type: float[4*n*m]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>The map provided here is the same map that is used by the camera device to
+     * correct both color shading and vignetting for output non-RAW images.</p>
+     * <p>When there is no lens shading correction applied to RAW
+     * output images (ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED <code>==</code>
+     * false), this map is the complete lens shading correction
+     * map; when there is some lens shading correction applied to
+     * the RAW output image (ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED<code>==</code> true), this map reports the remaining lens shading
+     * correction map that needs to be applied to get shading
+     * corrected images that match the camera device's output for
+     * non-RAW formats.</p>
+     * <p>For a complete shading correction map, the least shaded
+     * section of the image will have a gain factor of 1; all
+     * other sections will have gains above 1.</p>
+     * <p>When ACAMERA_COLOR_CORRECTION_MODE = TRANSFORM_MATRIX, the map
+     * will take into account the colorCorrection settings.</p>
+     * <p>The shading map is for the entire active pixel array, and is not
+     * affected by the crop region specified in the request. Each shading map
+     * entry is the value of the shading compensation map over a specific
+     * pixel on the sensor.  Specifically, with a (N x M) resolution shading
+     * map, and an active pixel array size (W x H), shading map entry
+     * (x,y) ϵ (0 ... N-1, 0 ... M-1) is the value of the shading map at
+     * pixel ( ((W-1)/(N-1)) * x, ((H-1)/(M-1)) * y) for the four color channels.
+     * The map is assumed to be bilinearly interpolated between the sample points.</p>
+     * <p>The channel order is [R, Geven, Godd, B], where Geven is the green
+     * channel for the even rows of a Bayer pattern, and Godd is the odd rows.
+     * The shading map is stored in a fully interleaved format, and its size
+     * is provided in the camera static metadata by ACAMERA_LENS_INFO_SHADING_MAP_SIZE.</p>
+     * <p>The shading map will generally have on the order of 30-40 rows and columns,
+     * and will be smaller than 64x64.</p>
+     * <p>As an example, given a very small map defined as:</p>
+     * <pre><code>ACAMERA_LENS_INFO_SHADING_MAP_SIZE = [ 4, 3 ]
+     * ACAMERA_STATISTICS_LENS_SHADING_MAP =
+     * [ 1.3, 1.2, 1.15, 1.2,  1.2, 1.2, 1.15, 1.2,
+     *     1.1, 1.2, 1.2, 1.2,  1.3, 1.2, 1.3, 1.3,
+     *   1.2, 1.2, 1.25, 1.1,  1.1, 1.1, 1.1, 1.0,
+     *     1.0, 1.0, 1.0, 1.0,  1.2, 1.3, 1.25, 1.2,
+     *   1.3, 1.2, 1.2, 1.3,   1.2, 1.15, 1.1, 1.2,
+     *     1.2, 1.1, 1.0, 1.2,  1.3, 1.15, 1.2, 1.3 ]
+     * </code></pre>
+     * <p>The low-resolution scaling map images for each channel are
+     * (displayed using nearest-neighbor interpolation):</p>
+     * <p><img alt="Red lens shading map" src="../images/camera2/metadata/android.statistics.lensShadingMap/red_shading.png" />
+     * <img alt="Green (even rows) lens shading map" src="../images/camera2/metadata/android.statistics.lensShadingMap/green_e_shading.png" />
+     * <img alt="Green (odd rows) lens shading map" src="../images/camera2/metadata/android.statistics.lensShadingMap/green_o_shading.png" />
+     * <img alt="Blue lens shading map" src="../images/camera2/metadata/android.statistics.lensShadingMap/blue_shading.png" /></p>
+     * <p>As a visualization only, inverting the full-color map to recover an
+     * image of a gray wall (using bicubic interpolation for visual quality)
+     * as captured by the sensor gives:</p>
+     * <p><img alt="Image of a uniform white wall (inverse shading map)" src="../images/camera2/metadata/android.statistics.lensShadingMap/inv_shading.png" /></p>
+     * <p>Note that the RAW image data might be subject to lens shading
+     * correction not reported on this map. Query
+     * ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED to see if RAW image data has subject
+     * to lens shading correction. If ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED
+     * is TRUE, the RAW image data is subject to partial or full lens shading
+     * correction. In the case full lens shading correction is applied to RAW
+     * images, the gain factor map reported in this key will contain all 1.0 gains.
+     * In other words, the map reported in this key is the remaining lens shading
+     * that needs to be applied on the RAW image to get images without lens shading
+     * artifacts. See android.request.maxNumOutputRaw for a list of RAW image
+     * formats.</p>
+     *
+     * @see ACAMERA_COLOR_CORRECTION_MODE
+     * @see ACAMERA_LENS_INFO_SHADING_MAP_SIZE
+     * @see ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED
+     * @see ACAMERA_STATISTICS_LENS_SHADING_MAP
+     */
+    ACAMERA_STATISTICS_LENS_SHADING_MAP =                       // float[4*n*m]
+            ACAMERA_STATISTICS_START + 11,
+    /**
+     * <p>The camera device estimated scene illumination lighting
+     * frequency.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_statistics_scene_flicker_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>Many light sources, such as most fluorescent lights, flicker at a rate
+     * that depends on the local utility power standards. This flicker must be
+     * accounted for by auto-exposure routines to avoid artifacts in captured images.
+     * The camera device uses this entry to tell the application what the scene
+     * illuminant frequency is.</p>
+     * <p>When manual exposure control is enabled
+     * (<code>ACAMERA_CONTROL_AE_MODE == OFF</code> or <code>ACAMERA_CONTROL_MODE ==
+     * OFF</code>), the ACAMERA_CONTROL_AE_ANTIBANDING_MODE doesn't perform
+     * antibanding, and the application can ensure it selects
+     * exposure times that do not cause banding issues by looking
+     * into this metadata field. See
+     * ACAMERA_CONTROL_AE_ANTIBANDING_MODE for more details.</p>
+     * <p>Reports NONE if there doesn't appear to be flickering illumination.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_ANTIBANDING_MODE
+     * @see ACAMERA_CONTROL_AE_MODE
+     * @see ACAMERA_CONTROL_MODE
+     */
+    ACAMERA_STATISTICS_SCENE_FLICKER =                          // byte (acamera_metadata_enum_android_statistics_scene_flicker_t)
+            ACAMERA_STATISTICS_START + 14,
+    /**
+     * <p>List of <code>(x, y)</code> coordinates of hot/defective pixels on the sensor.</p>
+     *
+     * <p>Type: int32[2*n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>A coordinate <code>(x, y)</code> must lie between <code>(0, 0)</code>, and
+     * <code>(width - 1, height - 1)</code> (inclusive), which are the top-left and
+     * bottom-right of the pixel array, respectively. The width and
+     * height dimensions are given in ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE.
+     * This may include hot pixels that lie outside of the active array
+     * bounds given by ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE.</p>
+     *
+     * @see ACAMERA_SENSOR_INFO_ACTIVE_ARRAY_SIZE
+     * @see ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE
+     */
+    ACAMERA_STATISTICS_HOT_PIXEL_MAP =                          // int32[2*n]
+            ACAMERA_STATISTICS_START + 15,
+    /**
+     * <p>Whether the camera device will output the lens
+     * shading map in output result metadata.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_statistics_lens_shading_map_mode_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>When set to ON,
+     * ACAMERA_STATISTICS_LENS_SHADING_MAP will be provided in
+     * the output result metadata.</p>
+     * <p>ON is always supported on devices with the RAW capability.</p>
+     *
+     * @see ACAMERA_STATISTICS_LENS_SHADING_MAP
+     */
+    ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE =                  // byte (acamera_metadata_enum_android_statistics_lens_shading_map_mode_t)
+            ACAMERA_STATISTICS_START + 16,
+    ACAMERA_STATISTICS_END,
+
+    /**
+     * <p>List of face detection modes for ACAMERA_STATISTICS_FACE_DETECT_MODE that are
+     * supported by this camera device.</p>
+     *
+     * @see ACAMERA_STATISTICS_FACE_DETECT_MODE
+     *
+     * <p>Type: byte[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>OFF is always supported.</p>
+     */
+    ACAMERA_STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES =       // byte[n]
+            ACAMERA_STATISTICS_INFO_START,
+    /**
+     * <p>The maximum number of simultaneously detectable
+     * faces.</p>
+     *
+     * <p>Type: int32</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     */
+    ACAMERA_STATISTICS_INFO_MAX_FACE_COUNT =                    // int32
+            ACAMERA_STATISTICS_INFO_START + 2,
+    /**
+     * <p>List of hot pixel map output modes for ACAMERA_STATISTICS_HOT_PIXEL_MAP_MODE that are
+     * supported by this camera device.</p>
+     *
+     * @see ACAMERA_STATISTICS_HOT_PIXEL_MAP_MODE
+     *
+     * <p>Type: byte[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>If no hotpixel map output is available for this camera device, this will contain only
+     * <code>false</code>.</p>
+     * <p>ON is always supported on devices with the RAW capability.</p>
+     */
+    ACAMERA_STATISTICS_INFO_AVAILABLE_HOT_PIXEL_MAP_MODES =     // byte[n]
+            ACAMERA_STATISTICS_INFO_START + 6,
+    /**
+     * <p>List of lens shading map output modes for ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE that
+     * are supported by this camera device.</p>
+     *
+     * @see ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE
+     *
+     * <p>Type: byte[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>If no lens shading map output is available for this camera device, this key will
+     * contain only OFF.</p>
+     * <p>ON is always supported on devices with the RAW capability.
+     * LEGACY mode devices will always only support OFF.</p>
+     */
+    ACAMERA_STATISTICS_INFO_AVAILABLE_LENS_SHADING_MAP_MODES =  // byte[n]
+            ACAMERA_STATISTICS_INFO_START + 7,
+    ACAMERA_STATISTICS_INFO_END,
+
+    /**
+     * <p>Tonemapping / contrast / gamma curve for the blue
+     * channel, to use when ACAMERA_TONEMAP_MODE is
+     * CONTRAST_CURVE.</p>
+     *
+     * @see ACAMERA_TONEMAP_MODE
+     *
+     * <p>Type: float[n*2]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>See ACAMERA_TONEMAP_CURVE_RED for more details.</p>
+     *
+     * @see ACAMERA_TONEMAP_CURVE_RED
+     */
+    ACAMERA_TONEMAP_CURVE_BLUE =                                // float[n*2]
+            ACAMERA_TONEMAP_START,
+    /**
+     * <p>Tonemapping / contrast / gamma curve for the green
+     * channel, to use when ACAMERA_TONEMAP_MODE is
+     * CONTRAST_CURVE.</p>
+     *
+     * @see ACAMERA_TONEMAP_MODE
+     *
+     * <p>Type: float[n*2]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>See ACAMERA_TONEMAP_CURVE_RED for more details.</p>
+     *
+     * @see ACAMERA_TONEMAP_CURVE_RED
+     */
+    ACAMERA_TONEMAP_CURVE_GREEN =                               // float[n*2]
+            ACAMERA_TONEMAP_START + 1,
+    /**
+     * <p>Tonemapping / contrast / gamma curve for the red
+     * channel, to use when ACAMERA_TONEMAP_MODE is
+     * CONTRAST_CURVE.</p>
+     *
+     * @see ACAMERA_TONEMAP_MODE
+     *
+     * <p>Type: float[n*2]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>Each channel's curve is defined by an array of control points:</p>
+     * <pre><code>ACAMERA_TONEMAP_CURVE_RED =
+     *   [ P0in, P0out, P1in, P1out, P2in, P2out, P3in, P3out, ..., PNin, PNout ]
+     * 2 &lt;= N &lt;= ACAMERA_TONEMAP_MAX_CURVE_POINTS</code></pre>
+     * <p>These are sorted in order of increasing <code>Pin</code>; it is
+     * required that input values 0.0 and 1.0 are included in the list to
+     * define a complete mapping. For input values between control points,
+     * the camera device must linearly interpolate between the control
+     * points.</p>
+     * <p>Each curve can have an independent number of points, and the number
+     * of points can be less than max (that is, the request doesn't have to
+     * always provide a curve with number of points equivalent to
+     * ACAMERA_TONEMAP_MAX_CURVE_POINTS).</p>
+     * <p>A few examples, and their corresponding graphical mappings; these
+     * only specify the red channel and the precision is limited to 4
+     * digits, for conciseness.</p>
+     * <p>Linear mapping:</p>
+     * <pre><code>ACAMERA_TONEMAP_CURVE_RED = [ 0, 0, 1.0, 1.0 ]
+     * </code></pre>
+     * <p><img alt="Linear mapping curve" src="../images/camera2/metadata/android.tonemap.curveRed/linear_tonemap.png" /></p>
+     * <p>Invert mapping:</p>
+     * <pre><code>ACAMERA_TONEMAP_CURVE_RED = [ 0, 1.0, 1.0, 0 ]
+     * </code></pre>
+     * <p><img alt="Inverting mapping curve" src="../images/camera2/metadata/android.tonemap.curveRed/inverse_tonemap.png" /></p>
+     * <p>Gamma 1/2.2 mapping, with 16 control points:</p>
+     * <pre><code>ACAMERA_TONEMAP_CURVE_RED = [
+     *   0.0000, 0.0000, 0.0667, 0.2920, 0.1333, 0.4002, 0.2000, 0.4812,
+     *   0.2667, 0.5484, 0.3333, 0.6069, 0.4000, 0.6594, 0.4667, 0.7072,
+     *   0.5333, 0.7515, 0.6000, 0.7928, 0.6667, 0.8317, 0.7333, 0.8685,
+     *   0.8000, 0.9035, 0.8667, 0.9370, 0.9333, 0.9691, 1.0000, 1.0000 ]
+     * </code></pre>
+     * <p><img alt="Gamma = 1/2.2 tonemapping curve" src="../images/camera2/metadata/android.tonemap.curveRed/gamma_tonemap.png" /></p>
+     * <p>Standard sRGB gamma mapping, per IEC 61966-2-1:1999, with 16 control points:</p>
+     * <pre><code>ACAMERA_TONEMAP_CURVE_RED = [
+     *   0.0000, 0.0000, 0.0667, 0.2864, 0.1333, 0.4007, 0.2000, 0.4845,
+     *   0.2667, 0.5532, 0.3333, 0.6125, 0.4000, 0.6652, 0.4667, 0.7130,
+     *   0.5333, 0.7569, 0.6000, 0.7977, 0.6667, 0.8360, 0.7333, 0.8721,
+     *   0.8000, 0.9063, 0.8667, 0.9389, 0.9333, 0.9701, 1.0000, 1.0000 ]
+     * </code></pre>
+     * <p><img alt="sRGB tonemapping curve" src="../images/camera2/metadata/android.tonemap.curveRed/srgb_tonemap.png" /></p>
+     *
+     * @see ACAMERA_TONEMAP_CURVE_RED
+     * @see ACAMERA_TONEMAP_MAX_CURVE_POINTS
+     */
+    ACAMERA_TONEMAP_CURVE_RED =                                 // float[n*2]
+            ACAMERA_TONEMAP_START + 2,
+    /**
+     * <p>High-level global contrast/gamma/tonemapping control.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_tonemap_mode_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>When switching to an application-defined contrast curve by setting
+     * ACAMERA_TONEMAP_MODE to CONTRAST_CURVE, the curve is defined
+     * per-channel with a set of <code>(in, out)</code> points that specify the
+     * mapping from input high-bit-depth pixel value to the output
+     * low-bit-depth value.  Since the actual pixel ranges of both input
+     * and output may change depending on the camera pipeline, the values
+     * are specified by normalized floating-point numbers.</p>
+     * <p>More-complex color mapping operations such as 3D color look-up
+     * tables, selective chroma enhancement, or other non-linear color
+     * transforms will be disabled when ACAMERA_TONEMAP_MODE is
+     * CONTRAST_CURVE.</p>
+     * <p>When using either FAST or HIGH_QUALITY, the camera device will
+     * emit its own tonemap curve in android.tonemap.curve.
+     * These values are always available, and as close as possible to the
+     * actually used nonlinear/nonglobal transforms.</p>
+     * <p>If a request is sent with CONTRAST_CURVE with the camera device's
+     * provided curve in FAST or HIGH_QUALITY, the image's tonemap will be
+     * roughly the same.</p>
+     *
+     * @see ACAMERA_TONEMAP_MODE
+     */
+    ACAMERA_TONEMAP_MODE =                                      // byte (acamera_metadata_enum_android_tonemap_mode_t)
+            ACAMERA_TONEMAP_START + 3,
+    /**
+     * <p>Maximum number of supported points in the
+     * tonemap curve that can be used for android.tonemap.curve.</p>
+     *
+     * <p>Type: int32</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>If the actual number of points provided by the application (in ACAMERA_TONEMAPCURVE_*) is
+     * less than this maximum, the camera device will resample the curve to its internal
+     * representation, using linear interpolation.</p>
+     * <p>The output curves in the result metadata may have a different number
+     * of points than the input curves, and will represent the actual
+     * hardware curves used as closely as possible when linearly interpolated.</p>
+     */
+    ACAMERA_TONEMAP_MAX_CURVE_POINTS =                          // int32
+            ACAMERA_TONEMAP_START + 4,
+    /**
+     * <p>List of tonemapping modes for ACAMERA_TONEMAP_MODE that are supported by this camera
+     * device.</p>
+     *
+     * @see ACAMERA_TONEMAP_MODE
+     *
+     * <p>Type: byte[n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>Camera devices that support the MANUAL_POST_PROCESSING capability will always contain
+     * at least one of below mode combinations:</p>
+     * <ul>
+     * <li>CONTRAST_CURVE, FAST and HIGH_QUALITY</li>
+     * <li>GAMMA_VALUE, PRESET_CURVE, FAST and HIGH_QUALITY</li>
+     * </ul>
+     * <p>This includes all FULL level devices.</p>
+     */
+    ACAMERA_TONEMAP_AVAILABLE_TONE_MAP_MODES =                  // byte[n]
+            ACAMERA_TONEMAP_START + 5,
+    /**
+     * <p>Tonemapping curve to use when ACAMERA_TONEMAP_MODE is
+     * GAMMA_VALUE</p>
+     *
+     * @see ACAMERA_TONEMAP_MODE
+     *
+     * <p>Type: float</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>The tonemap curve will be defined the following formula:
+     * * OUT = pow(IN, 1.0 / gamma)
+     * where IN and OUT is the input pixel value scaled to range [0.0, 1.0],
+     * pow is the power function and gamma is the gamma value specified by this
+     * key.</p>
+     * <p>The same curve will be applied to all color channels. The camera device
+     * may clip the input gamma value to its supported range. The actual applied
+     * value will be returned in capture result.</p>
+     * <p>The valid range of gamma value varies on different devices, but values
+     * within [1.0, 5.0] are guaranteed not to be clipped.</p>
+     */
+    ACAMERA_TONEMAP_GAMMA =                                     // float
+            ACAMERA_TONEMAP_START + 6,
+    /**
+     * <p>Tonemapping curve to use when ACAMERA_TONEMAP_MODE is
+     * PRESET_CURVE</p>
+     *
+     * @see ACAMERA_TONEMAP_MODE
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_tonemap_preset_curve_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>The tonemap curve will be defined by specified standard.</p>
+     * <p>sRGB (approximated by 16 control points):</p>
+     * <p><img alt="sRGB tonemapping curve" src="../images/camera2/metadata/android.tonemap.curveRed/srgb_tonemap.png" /></p>
+     * <p>Rec. 709 (approximated by 16 control points):</p>
+     * <p><img alt="Rec. 709 tonemapping curve" src="../images/camera2/metadata/android.tonemap.curveRed/rec709_tonemap.png" /></p>
+     * <p>Note that above figures show a 16 control points approximation of preset
+     * curves. Camera devices may apply a different approximation to the curve.</p>
+     */
+    ACAMERA_TONEMAP_PRESET_CURVE =                              // byte (acamera_metadata_enum_android_tonemap_preset_curve_t)
+            ACAMERA_TONEMAP_START + 7,
+    ACAMERA_TONEMAP_END,
+
+    /**
+     * <p>Generally classifies the overall set of the camera device functionality.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_info_supported_hardware_level_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>The supported hardware level is a high-level description of the camera device's
+     * capabilities, summarizing several capabilities into one field.  Each level adds additional
+     * features to the previous one, and is always a strict superset of the previous level.
+     * The ordering is <code>LEGACY &lt; LIMITED &lt; FULL &lt; LEVEL_3</code>.</p>
+     * <p>Starting from <code>LEVEL_3</code>, the level enumerations are guaranteed to be in increasing
+     * numerical value as well. To check if a given device is at least at a given hardware level,
+     * the following code snippet can be used:</p>
+     * <pre><code>// Returns true if the device supports the required hardware level, or better.
+     * boolean isHardwareLevelSupported(CameraCharacteristics c, int requiredLevel) {
+     *     int deviceLevel = c.get(CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL);
+     *     if (deviceLevel == CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY) {
+     *         return requiredLevel == deviceLevel;
+     *     }
+     *     // deviceLevel is not LEGACY, can use numerical sort
+     *     return requiredLevel &lt;= deviceLevel;
+     * }
+     * </code></pre>
+     * <p>At a high level, the levels are:</p>
+     * <ul>
+     * <li><code>LEGACY</code> devices operate in a backwards-compatibility mode for older
+     *   Android devices, and have very limited capabilities.</li>
+     * <li><code>LIMITED</code> devices represent the
+     *   baseline feature set, and may also include additional capabilities that are
+     *   subsets of <code>FULL</code>.</li>
+     * <li><code>FULL</code> devices additionally support per-frame manual control of sensor, flash, lens and
+     *   post-processing settings, and image capture at a high rate.</li>
+     * <li><code>LEVEL_3</code> devices additionally support YUV reprocessing and RAW image capture, along
+     *   with additional output stream configurations.</li>
+     * </ul>
+     * <p>See the individual level enums for full descriptions of the supported capabilities.  The
+     * ACAMERA_REQUEST_AVAILABLE_CAPABILITIES entry describes the device's capabilities at a
+     * finer-grain level, if needed. In addition, many controls have their available settings or
+     * ranges defined in individual metadata tag entries in this document.</p>
+     * <p>Some features are not part of any particular hardware level or capability and must be
+     * queried separately. These include:</p>
+     * <ul>
+     * <li>Calibrated timestamps (ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE <code>==</code> REALTIME)</li>
+     * <li>Precision lens control (ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION <code>==</code> CALIBRATED)</li>
+     * <li>Face detection (ACAMERA_STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES)</li>
+     * <li>Optical or electrical image stabilization
+     *   (ACAMERA_LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION,
+     *    ACAMERA_CONTROL_AVAILABLE_VIDEO_STABILIZATION_MODES)</li>
+     * </ul>
+     *
+     * @see ACAMERA_CONTROL_AVAILABLE_VIDEO_STABILIZATION_MODES
+     * @see ACAMERA_LENS_INFO_AVAILABLE_OPTICAL_STABILIZATION
+     * @see ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION
+     * @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+     * @see ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE
+     * @see ACAMERA_STATISTICS_INFO_AVAILABLE_FACE_DETECT_MODES
+     */
+    ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL =                     // byte (acamera_metadata_enum_android_info_supported_hardware_level_t)
+            ACAMERA_INFO_START,
+    ACAMERA_INFO_END,
+
+    /**
+     * <p>Whether black-level compensation is locked
+     * to its current values, or is free to vary.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_black_level_lock_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     *   <li>ACaptureRequest</li>
+     * </ul></p>
+     *
+     * <p>Whether the black level offset was locked for this frame.  Should be
+     * ON if ACAMERA_BLACK_LEVEL_LOCK was ON in the capture request, unless
+     * a change in other capture settings forced the camera device to
+     * perform a black level reset.</p>
+     *
+     * @see ACAMERA_BLACK_LEVEL_LOCK
+     */
+    ACAMERA_BLACK_LEVEL_LOCK =                                  // byte (acamera_metadata_enum_android_black_level_lock_t)
+            ACAMERA_BLACK_LEVEL_START,
+    ACAMERA_BLACK_LEVEL_END,
+
+    /**
+     * <p>The frame number corresponding to the last request
+     * with which the output result (metadata + buffers) has been fully
+     * synchronized.</p>
+     *
+     * <p>Type: int64 (acamera_metadata_enum_android_sync_frame_number_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraCaptureSession_captureCallback_result callbacks</li>
+     * </ul></p>
+     *
+     * <p>When a request is submitted to the camera device, there is usually a
+     * delay of several frames before the controls get applied. A camera
+     * device may either choose to account for this delay by implementing a
+     * pipeline and carefully submit well-timed atomic control updates, or
+     * it may start streaming control changes that span over several frame
+     * boundaries.</p>
+     * <p>In the latter case, whenever a request's settings change relative to
+     * the previous submitted request, the full set of changes may take
+     * multiple frame durations to fully take effect. Some settings may
+     * take effect sooner (in less frame durations) than others.</p>
+     * <p>While a set of control changes are being propagated, this value
+     * will be CONVERGING.</p>
+     * <p>Once it is fully known that a set of control changes have been
+     * finished propagating, and the resulting updated control settings
+     * have been read back by the camera device, this value will be set
+     * to a non-negative frame number (corresponding to the request to
+     * which the results have synchronized to).</p>
+     * <p>Older camera device implementations may not have a way to detect
+     * when all camera controls have been applied, and will always set this
+     * value to UNKNOWN.</p>
+     * <p>FULL capability devices will always have this value set to the
+     * frame number of the request corresponding to this result.</p>
+     * <p><em>Further details</em>:</p>
+     * <ul>
+     * <li>Whenever a request differs from the last request, any future
+     * results not yet returned may have this value set to CONVERGING (this
+     * could include any in-progress captures not yet returned by the camera
+     * device, for more details see pipeline considerations below).</li>
+     * <li>Submitting a series of multiple requests that differ from the
+     * previous request (e.g. r1, r2, r3 s.t. r1 != r2 != r3)
+     * moves the new synchronization frame to the last non-repeating
+     * request (using the smallest frame number from the contiguous list of
+     * repeating requests).</li>
+     * <li>Submitting the same request repeatedly will not change this value
+     * to CONVERGING, if it was already a non-negative value.</li>
+     * <li>When this value changes to non-negative, that means that all of the
+     * metadata controls from the request have been applied, all of the
+     * metadata controls from the camera device have been read to the
+     * updated values (into the result), and all of the graphics buffers
+     * corresponding to this result are also synchronized to the request.</li>
+     * </ul>
+     * <p><em>Pipeline considerations</em>:</p>
+     * <p>Submitting a request with updated controls relative to the previously
+     * submitted requests may also invalidate the synchronization state
+     * of all the results corresponding to currently in-flight requests.</p>
+     * <p>In other words, results for this current request and up to
+     * ACAMERA_REQUEST_PIPELINE_MAX_DEPTH prior requests may have their
+     * ACAMERA_SYNC_FRAME_NUMBER change to CONVERGING.</p>
+     *
+     * @see ACAMERA_REQUEST_PIPELINE_MAX_DEPTH
+     * @see ACAMERA_SYNC_FRAME_NUMBER
+     */
+    ACAMERA_SYNC_FRAME_NUMBER =                                 // int64 (acamera_metadata_enum_android_sync_frame_number_t)
+            ACAMERA_SYNC_START,
+    /**
+     * <p>The maximum number of frames that can occur after a request
+     * (different than the previous) has been submitted, and before the
+     * result's state becomes synchronized.</p>
+     *
+     * <p>Type: int32 (acamera_metadata_enum_android_sync_max_latency_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>This defines the maximum distance (in number of metadata results),
+     * between the frame number of the request that has new controls to apply
+     * and the frame number of the result that has all the controls applied.</p>
+     * <p>In other words this acts as an upper boundary for how many frames
+     * must occur before the camera device knows for a fact that the new
+     * submitted camera settings have been applied in outgoing frames.</p>
+     */
+    ACAMERA_SYNC_MAX_LATENCY =                                  // int32 (acamera_metadata_enum_android_sync_max_latency_t)
+            ACAMERA_SYNC_START + 1,
+    ACAMERA_SYNC_END,
+
+    /**
+     * <p>The available depth dataspace stream
+     * configurations that this camera device supports
+     * (i.e. format, width, height, output/input stream).</p>
+     *
+     * <p>Type: int32[n*4] (acamera_metadata_enum_android_depth_available_depth_stream_configurations_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>These are output stream configurations for use with
+     * dataSpace HAL_DATASPACE_DEPTH. The configurations are
+     * listed as <code>(format, width, height, input?)</code> tuples.</p>
+     * <p>Only devices that support depth output for at least
+     * the HAL_PIXEL_FORMAT_Y16 dense depth map may include
+     * this entry.</p>
+     * <p>A device that also supports the HAL_PIXEL_FORMAT_BLOB
+     * sparse depth point cloud must report a single entry for
+     * the format in this list as <code>(HAL_PIXEL_FORMAT_BLOB,
+     * android.depth.maxDepthSamples, 1, OUTPUT)</code> in addition to
+     * the entries for HAL_PIXEL_FORMAT_Y16.</p>
+     */
+    ACAMERA_DEPTH_AVAILABLE_DEPTH_STREAM_CONFIGURATIONS =       // int32[n*4] (acamera_metadata_enum_android_depth_available_depth_stream_configurations_t)
+            ACAMERA_DEPTH_START + 1,
+    /**
+     * <p>This lists the minimum frame duration for each
+     * format/size combination for depth output formats.</p>
+     *
+     * <p>Type: int64[4*n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>This should correspond to the frame duration when only that
+     * stream is active, with all processing (typically in android.*.mode)
+     * set to either OFF or FAST.</p>
+     * <p>When multiple streams are used in a request, the minimum frame
+     * duration will be max(individual stream min durations).</p>
+     * <p>The minimum frame duration of a stream (of a particular format, size)
+     * is the same regardless of whether the stream is input or output.</p>
+     * <p>See ACAMERA_SENSOR_FRAME_DURATION and
+     * ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS for more details about
+     * calculating the max frame rate.</p>
+     *
+     * @see ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS
+     * @see ACAMERA_SENSOR_FRAME_DURATION
+     */
+    ACAMERA_DEPTH_AVAILABLE_DEPTH_MIN_FRAME_DURATIONS =         // int64[4*n]
+            ACAMERA_DEPTH_START + 2,
+    /**
+     * <p>This lists the maximum stall duration for each
+     * output format/size combination for depth streams.</p>
+     *
+     * <p>Type: int64[4*n]</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>A stall duration is how much extra time would get added
+     * to the normal minimum frame duration for a repeating request
+     * that has streams with non-zero stall.</p>
+     * <p>This functions similarly to
+     * ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS for depth
+     * streams.</p>
+     * <p>All depth output stream formats may have a nonzero stall
+     * duration.</p>
+     *
+     * @see ACAMERA_SCALER_AVAILABLE_STALL_DURATIONS
+     */
+    ACAMERA_DEPTH_AVAILABLE_DEPTH_STALL_DURATIONS =             // int64[4*n]
+            ACAMERA_DEPTH_START + 3,
+    /**
+     * <p>Indicates whether a capture request may target both a
+     * DEPTH16 / DEPTH_POINT_CLOUD output, and normal color outputs (such as
+     * YUV_420_888, JPEG, or RAW) simultaneously.</p>
+     *
+     * <p>Type: byte (acamera_metadata_enum_android_depth_depth_is_exclusive_t)</p>
+     *
+     * <p>This tag may appear in:
+     * <ul>
+     *   <li>ACameraMetadata from ACameraManager_getCameraCharacteristics</li>
+     * </ul></p>
+     *
+     * <p>If TRUE, including both depth and color outputs in a single
+     * capture request is not supported. An application must interleave color
+     * and depth requests.  If FALSE, a single request can target both types
+     * of output.</p>
+     * <p>Typically, this restriction exists on camera devices that
+     * need to emit a specific pattern or wavelength of light to
+     * measure depth values, which causes the color image to be
+     * corrupted during depth measurement.</p>
+     */
+    ACAMERA_DEPTH_DEPTH_IS_EXCLUSIVE =                          // byte (acamera_metadata_enum_android_depth_depth_is_exclusive_t)
+            ACAMERA_DEPTH_START + 4,
+    ACAMERA_DEPTH_END,
+
+} acamera_metadata_tag_t;
+
+/**
+ * Enumeration definitions for the various entries that need them
+ */
+
+// ACAMERA_COLOR_CORRECTION_MODE
+typedef enum acamera_metadata_enum_acamera_color_correction_mode {
+    /**
+     * <p>Use the ACAMERA_COLOR_CORRECTION_TRANSFORM matrix
+     * and ACAMERA_COLOR_CORRECTION_GAINS to do color conversion.</p>
+     * <p>All advanced white balance adjustments (not specified
+     * by our white balance pipeline) must be disabled.</p>
+     * <p>If AWB is enabled with <code>ACAMERA_CONTROL_AWB_MODE != OFF</code>, then
+     * TRANSFORM_MATRIX is ignored. The camera device will override
+     * this value to either FAST or HIGH_QUALITY.</p>
+     *
+     * @see ACAMERA_COLOR_CORRECTION_GAINS
+     * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+     * @see ACAMERA_CONTROL_AWB_MODE
+     */
+    ACAMERA_COLOR_CORRECTION_MODE_TRANSFORM_MATRIX                   = 0,
+
+    /**
+     * <p>Color correction processing must not slow down
+     * capture rate relative to sensor raw output.</p>
+     * <p>Advanced white balance adjustments above and beyond
+     * the specified white balance pipeline may be applied.</p>
+     * <p>If AWB is enabled with <code>ACAMERA_CONTROL_AWB_MODE != OFF</code>, then
+     * the camera device uses the last frame's AWB values
+     * (or defaults if AWB has never been run).</p>
+     *
+     * @see ACAMERA_CONTROL_AWB_MODE
+     */
+    ACAMERA_COLOR_CORRECTION_MODE_FAST                               = 1,
+
+    /**
+     * <p>Color correction processing operates at improved
+     * quality but the capture rate might be reduced (relative to sensor
+     * raw output rate)</p>
+     * <p>Advanced white balance adjustments above and beyond
+     * the specified white balance pipeline may be applied.</p>
+     * <p>If AWB is enabled with <code>ACAMERA_CONTROL_AWB_MODE != OFF</code>, then
+     * the camera device uses the last frame's AWB values
+     * (or defaults if AWB has never been run).</p>
+     *
+     * @see ACAMERA_CONTROL_AWB_MODE
+     */
+    ACAMERA_COLOR_CORRECTION_MODE_HIGH_QUALITY                       = 2,
+
+} acamera_metadata_enum_android_color_correction_mode_t;
+
+// ACAMERA_COLOR_CORRECTION_ABERRATION_MODE
+typedef enum acamera_metadata_enum_acamera_color_correction_aberration_mode {
+    /**
+     * <p>No aberration correction is applied.</p>
+     */
+    ACAMERA_COLOR_CORRECTION_ABERRATION_MODE_OFF                     = 0,
+
+    /**
+     * <p>Aberration correction will not slow down capture rate
+     * relative to sensor raw output.</p>
+     */
+    ACAMERA_COLOR_CORRECTION_ABERRATION_MODE_FAST                    = 1,
+
+    /**
+     * <p>Aberration correction operates at improved quality but the capture rate might be
+     * reduced (relative to sensor raw output rate)</p>
+     */
+    ACAMERA_COLOR_CORRECTION_ABERRATION_MODE_HIGH_QUALITY            = 2,
+
+} acamera_metadata_enum_android_color_correction_aberration_mode_t;
+
+
+// ACAMERA_CONTROL_AE_ANTIBANDING_MODE
+typedef enum acamera_metadata_enum_acamera_control_ae_antibanding_mode {
+    /**
+     * <p>The camera device will not adjust exposure duration to
+     * avoid banding problems.</p>
+     */
+    ACAMERA_CONTROL_AE_ANTIBANDING_MODE_OFF                          = 0,
+
+    /**
+     * <p>The camera device will adjust exposure duration to
+     * avoid banding problems with 50Hz illumination sources.</p>
+     */
+    ACAMERA_CONTROL_AE_ANTIBANDING_MODE_50HZ                         = 1,
+
+    /**
+     * <p>The camera device will adjust exposure duration to
+     * avoid banding problems with 60Hz illumination
+     * sources.</p>
+     */
+    ACAMERA_CONTROL_AE_ANTIBANDING_MODE_60HZ                         = 2,
+
+    /**
+     * <p>The camera device will automatically adapt its
+     * antibanding routine to the current illumination
+     * condition. This is the default mode if AUTO is
+     * available on given camera device.</p>
+     */
+    ACAMERA_CONTROL_AE_ANTIBANDING_MODE_AUTO                         = 3,
+
+} acamera_metadata_enum_android_control_ae_antibanding_mode_t;
+
+// ACAMERA_CONTROL_AE_LOCK
+typedef enum acamera_metadata_enum_acamera_control_ae_lock {
+    /**
+     * <p>Auto-exposure lock is disabled; the AE algorithm
+     * is free to update its parameters.</p>
+     */
+    ACAMERA_CONTROL_AE_LOCK_OFF                                      = 0,
+
+    /**
+     * <p>Auto-exposure lock is enabled; the AE algorithm
+     * must not update the exposure and sensitivity parameters
+     * while the lock is active.</p>
+     * <p>ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION setting changes
+     * will still take effect while auto-exposure is locked.</p>
+     * <p>Some rare LEGACY devices may not support
+     * this, in which case the value will always be overridden to OFF.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_EXPOSURE_COMPENSATION
+     */
+    ACAMERA_CONTROL_AE_LOCK_ON                                       = 1,
+
+} acamera_metadata_enum_android_control_ae_lock_t;
+
+// ACAMERA_CONTROL_AE_MODE
+typedef enum acamera_metadata_enum_acamera_control_ae_mode {
+    /**
+     * <p>The camera device's autoexposure routine is disabled.</p>
+     * <p>The application-selected ACAMERA_SENSOR_EXPOSURE_TIME,
+     * ACAMERA_SENSOR_SENSITIVITY and
+     * ACAMERA_SENSOR_FRAME_DURATION are used by the camera
+     * device, along with ACAMERA_FLASH_* fields, if there's
+     * a flash unit for this camera device.</p>
+     * <p>Note that auto-white balance (AWB) and auto-focus (AF)
+     * behavior is device dependent when AE is in OFF mode.
+     * To have consistent behavior across different devices,
+     * it is recommended to either set AWB and AF to OFF mode
+     * or lock AWB and AF before setting AE to OFF.
+     * See ACAMERA_CONTROL_AWB_MODE, ACAMERA_CONTROL_AF_MODE,
+     * ACAMERA_CONTROL_AWB_LOCK, and ACAMERA_CONTROL_AF_TRIGGER
+     * for more details.</p>
+     * <p>LEGACY devices do not support the OFF mode and will
+     * override attempts to use this value to ON.</p>
+     *
+     * @see ACAMERA_CONTROL_AF_MODE
+     * @see ACAMERA_CONTROL_AF_TRIGGER
+     * @see ACAMERA_CONTROL_AWB_LOCK
+     * @see ACAMERA_CONTROL_AWB_MODE
+     * @see ACAMERA_SENSOR_EXPOSURE_TIME
+     * @see ACAMERA_SENSOR_FRAME_DURATION
+     * @see ACAMERA_SENSOR_SENSITIVITY
+     */
+    ACAMERA_CONTROL_AE_MODE_OFF                                      = 0,
+
+    /**
+     * <p>The camera device's autoexposure routine is active,
+     * with no flash control.</p>
+     * <p>The application's values for
+     * ACAMERA_SENSOR_EXPOSURE_TIME,
+     * ACAMERA_SENSOR_SENSITIVITY, and
+     * ACAMERA_SENSOR_FRAME_DURATION are ignored. The
+     * application has control over the various
+     * ACAMERA_FLASH_* fields.</p>
+     *
+     * @see ACAMERA_SENSOR_EXPOSURE_TIME
+     * @see ACAMERA_SENSOR_FRAME_DURATION
+     * @see ACAMERA_SENSOR_SENSITIVITY
+     */
+    ACAMERA_CONTROL_AE_MODE_ON                                       = 1,
+
+    /**
+     * <p>Like ON, except that the camera device also controls
+     * the camera's flash unit, firing it in low-light
+     * conditions.</p>
+     * <p>The flash may be fired during a precapture sequence
+     * (triggered by ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER) and
+     * may be fired for captures for which the
+     * ACAMERA_CONTROL_CAPTURE_INTENT field is set to
+     * STILL_CAPTURE</p>
+     *
+     * @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
+     * @see ACAMERA_CONTROL_CAPTURE_INTENT
+     */
+    ACAMERA_CONTROL_AE_MODE_ON_AUTO_FLASH                            = 2,
+
+    /**
+     * <p>Like ON, except that the camera device also controls
+     * the camera's flash unit, always firing it for still
+     * captures.</p>
+     * <p>The flash may be fired during a precapture sequence
+     * (triggered by ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER) and
+     * will always be fired for captures for which the
+     * ACAMERA_CONTROL_CAPTURE_INTENT field is set to
+     * STILL_CAPTURE</p>
+     *
+     * @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
+     * @see ACAMERA_CONTROL_CAPTURE_INTENT
+     */
+    ACAMERA_CONTROL_AE_MODE_ON_ALWAYS_FLASH                          = 3,
+
+    /**
+     * <p>Like ON_AUTO_FLASH, but with automatic red eye
+     * reduction.</p>
+     * <p>If deemed necessary by the camera device, a red eye
+     * reduction flash will fire during the precapture
+     * sequence.</p>
+     */
+    ACAMERA_CONTROL_AE_MODE_ON_AUTO_FLASH_REDEYE                     = 4,
+
+} acamera_metadata_enum_android_control_ae_mode_t;
+
+// ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
+typedef enum acamera_metadata_enum_acamera_control_ae_precapture_trigger {
+    /**
+     * <p>The trigger is idle.</p>
+     */
+    ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER_IDLE                       = 0,
+
+    /**
+     * <p>The precapture metering sequence will be started
+     * by the camera device.</p>
+     * <p>The exact effect of the precapture trigger depends on
+     * the current AE mode and state.</p>
+     */
+    ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER_START                      = 1,
+
+    /**
+     * <p>The camera device will cancel any currently active or completed
+     * precapture metering sequence, the auto-exposure routine will return to its
+     * initial state.</p>
+     */
+    ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER_CANCEL                     = 2,
+
+} acamera_metadata_enum_android_control_ae_precapture_trigger_t;
+
+// ACAMERA_CONTROL_AF_MODE
+typedef enum acamera_metadata_enum_acamera_control_af_mode {
+    /**
+     * <p>The auto-focus routine does not control the lens;
+     * ACAMERA_LENS_FOCUS_DISTANCE is controlled by the
+     * application.</p>
+     *
+     * @see ACAMERA_LENS_FOCUS_DISTANCE
+     */
+    ACAMERA_CONTROL_AF_MODE_OFF                                      = 0,
+
+    /**
+     * <p>Basic automatic focus mode.</p>
+     * <p>In this mode, the lens does not move unless
+     * the autofocus trigger action is called. When that trigger
+     * is activated, AF will transition to ACTIVE_SCAN, then to
+     * the outcome of the scan (FOCUSED or NOT_FOCUSED).</p>
+     * <p>Always supported if lens is not fixed focus.</p>
+     * <p>Use ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE to determine if lens
+     * is fixed-focus.</p>
+     * <p>Triggering AF_CANCEL resets the lens position to default,
+     * and sets the AF state to INACTIVE.</p>
+     *
+     * @see ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE
+     */
+    ACAMERA_CONTROL_AF_MODE_AUTO                                     = 1,
+
+    /**
+     * <p>Close-up focusing mode.</p>
+     * <p>In this mode, the lens does not move unless the
+     * autofocus trigger action is called. When that trigger is
+     * activated, AF will transition to ACTIVE_SCAN, then to
+     * the outcome of the scan (FOCUSED or NOT_FOCUSED). This
+     * mode is optimized for focusing on objects very close to
+     * the camera.</p>
+     * <p>When that trigger is activated, AF will transition to
+     * ACTIVE_SCAN, then to the outcome of the scan (FOCUSED or
+     * NOT_FOCUSED). Triggering cancel AF resets the lens
+     * position to default, and sets the AF state to
+     * INACTIVE.</p>
+     */
+    ACAMERA_CONTROL_AF_MODE_MACRO                                    = 2,
+
+    /**
+     * <p>In this mode, the AF algorithm modifies the lens
+     * position continually to attempt to provide a
+     * constantly-in-focus image stream.</p>
+     * <p>The focusing behavior should be suitable for good quality
+     * video recording; typically this means slower focus
+     * movement and no overshoots. When the AF trigger is not
+     * involved, the AF algorithm should start in INACTIVE state,
+     * and then transition into PASSIVE_SCAN and PASSIVE_FOCUSED
+     * states as appropriate. When the AF trigger is activated,
+     * the algorithm should immediately transition into
+     * AF_FOCUSED or AF_NOT_FOCUSED as appropriate, and lock the
+     * lens position until a cancel AF trigger is received.</p>
+     * <p>Once cancel is received, the algorithm should transition
+     * back to INACTIVE and resume passive scan. Note that this
+     * behavior is not identical to CONTINUOUS_PICTURE, since an
+     * ongoing PASSIVE_SCAN must immediately be
+     * canceled.</p>
+     */
+    ACAMERA_CONTROL_AF_MODE_CONTINUOUS_VIDEO                         = 3,
+
+    /**
+     * <p>In this mode, the AF algorithm modifies the lens
+     * position continually to attempt to provide a
+     * constantly-in-focus image stream.</p>
+     * <p>The focusing behavior should be suitable for still image
+     * capture; typically this means focusing as fast as
+     * possible. When the AF trigger is not involved, the AF
+     * algorithm should start in INACTIVE state, and then
+     * transition into PASSIVE_SCAN and PASSIVE_FOCUSED states as
+     * appropriate as it attempts to maintain focus. When the AF
+     * trigger is activated, the algorithm should finish its
+     * PASSIVE_SCAN if active, and then transition into
+     * AF_FOCUSED or AF_NOT_FOCUSED as appropriate, and lock the
+     * lens position until a cancel AF trigger is received.</p>
+     * <p>When the AF cancel trigger is activated, the algorithm
+     * should transition back to INACTIVE and then act as if it
+     * has just been started.</p>
+     */
+    ACAMERA_CONTROL_AF_MODE_CONTINUOUS_PICTURE                       = 4,
+
+    /**
+     * <p>Extended depth of field (digital focus) mode.</p>
+     * <p>The camera device will produce images with an extended
+     * depth of field automatically; no special focusing
+     * operations need to be done before taking a picture.</p>
+     * <p>AF triggers are ignored, and the AF state will always be
+     * INACTIVE.</p>
+     */
+    ACAMERA_CONTROL_AF_MODE_EDOF                                     = 5,
+
+} acamera_metadata_enum_android_control_af_mode_t;
+
+// ACAMERA_CONTROL_AF_TRIGGER
+typedef enum acamera_metadata_enum_acamera_control_af_trigger {
+    /**
+     * <p>The trigger is idle.</p>
+     */
+    ACAMERA_CONTROL_AF_TRIGGER_IDLE                                  = 0,
+
+    /**
+     * <p>Autofocus will trigger now.</p>
+     */
+    ACAMERA_CONTROL_AF_TRIGGER_START                                 = 1,
+
+    /**
+     * <p>Autofocus will return to its initial
+     * state, and cancel any currently active trigger.</p>
+     */
+    ACAMERA_CONTROL_AF_TRIGGER_CANCEL                                = 2,
+
+} acamera_metadata_enum_android_control_af_trigger_t;
+
+// ACAMERA_CONTROL_AWB_LOCK
+typedef enum acamera_metadata_enum_acamera_control_awb_lock {
+    /**
+     * <p>Auto-white balance lock is disabled; the AWB
+     * algorithm is free to update its parameters if in AUTO
+     * mode.</p>
+     */
+    ACAMERA_CONTROL_AWB_LOCK_OFF                                     = 0,
+
+    /**
+     * <p>Auto-white balance lock is enabled; the AWB
+     * algorithm will not update its parameters while the lock
+     * is active.</p>
+     */
+    ACAMERA_CONTROL_AWB_LOCK_ON                                      = 1,
+
+} acamera_metadata_enum_android_control_awb_lock_t;
+
+// ACAMERA_CONTROL_AWB_MODE
+typedef enum acamera_metadata_enum_acamera_control_awb_mode {
+    /**
+     * <p>The camera device's auto-white balance routine is disabled.</p>
+     * <p>The application-selected color transform matrix
+     * (ACAMERA_COLOR_CORRECTION_TRANSFORM) and gains
+     * (ACAMERA_COLOR_CORRECTION_GAINS) are used by the camera
+     * device for manual white balance control.</p>
+     *
+     * @see ACAMERA_COLOR_CORRECTION_GAINS
+     * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+     */
+    ACAMERA_CONTROL_AWB_MODE_OFF                                     = 0,
+
+    /**
+     * <p>The camera device's auto-white balance routine is active.</p>
+     * <p>The application's values for ACAMERA_COLOR_CORRECTION_TRANSFORM
+     * and ACAMERA_COLOR_CORRECTION_GAINS are ignored.
+     * For devices that support the MANUAL_POST_PROCESSING capability, the
+     * values used by the camera device for the transform and gains
+     * will be available in the capture result for this request.</p>
+     *
+     * @see ACAMERA_COLOR_CORRECTION_GAINS
+     * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+     */
+    ACAMERA_CONTROL_AWB_MODE_AUTO                                    = 1,
+
+    /**
+     * <p>The camera device's auto-white balance routine is disabled;
+     * the camera device uses incandescent light as the assumed scene
+     * illumination for white balance.</p>
+     * <p>While the exact white balance transforms are up to the
+     * camera device, they will approximately match the CIE
+     * standard illuminant A.</p>
+     * <p>The application's values for ACAMERA_COLOR_CORRECTION_TRANSFORM
+     * and ACAMERA_COLOR_CORRECTION_GAINS are ignored.
+     * For devices that support the MANUAL_POST_PROCESSING capability, the
+     * values used by the camera device for the transform and gains
+     * will be available in the capture result for this request.</p>
+     *
+     * @see ACAMERA_COLOR_CORRECTION_GAINS
+     * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+     */
+    ACAMERA_CONTROL_AWB_MODE_INCANDESCENT                            = 2,
+
+    /**
+     * <p>The camera device's auto-white balance routine is disabled;
+     * the camera device uses fluorescent light as the assumed scene
+     * illumination for white balance.</p>
+     * <p>While the exact white balance transforms are up to the
+     * camera device, they will approximately match the CIE
+     * standard illuminant F2.</p>
+     * <p>The application's values for ACAMERA_COLOR_CORRECTION_TRANSFORM
+     * and ACAMERA_COLOR_CORRECTION_GAINS are ignored.
+     * For devices that support the MANUAL_POST_PROCESSING capability, the
+     * values used by the camera device for the transform and gains
+     * will be available in the capture result for this request.</p>
+     *
+     * @see ACAMERA_COLOR_CORRECTION_GAINS
+     * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+     */
+    ACAMERA_CONTROL_AWB_MODE_FLUORESCENT                             = 3,
+
+    /**
+     * <p>The camera device's auto-white balance routine is disabled;
+     * the camera device uses warm fluorescent light as the assumed scene
+     * illumination for white balance.</p>
+     * <p>While the exact white balance transforms are up to the
+     * camera device, they will approximately match the CIE
+     * standard illuminant F4.</p>
+     * <p>The application's values for ACAMERA_COLOR_CORRECTION_TRANSFORM
+     * and ACAMERA_COLOR_CORRECTION_GAINS are ignored.
+     * For devices that support the MANUAL_POST_PROCESSING capability, the
+     * values used by the camera device for the transform and gains
+     * will be available in the capture result for this request.</p>
+     *
+     * @see ACAMERA_COLOR_CORRECTION_GAINS
+     * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+     */
+    ACAMERA_CONTROL_AWB_MODE_WARM_FLUORESCENT                        = 4,
+
+    /**
+     * <p>The camera device's auto-white balance routine is disabled;
+     * the camera device uses daylight light as the assumed scene
+     * illumination for white balance.</p>
+     * <p>While the exact white balance transforms are up to the
+     * camera device, they will approximately match the CIE
+     * standard illuminant D65.</p>
+     * <p>The application's values for ACAMERA_COLOR_CORRECTION_TRANSFORM
+     * and ACAMERA_COLOR_CORRECTION_GAINS are ignored.
+     * For devices that support the MANUAL_POST_PROCESSING capability, the
+     * values used by the camera device for the transform and gains
+     * will be available in the capture result for this request.</p>
+     *
+     * @see ACAMERA_COLOR_CORRECTION_GAINS
+     * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+     */
+    ACAMERA_CONTROL_AWB_MODE_DAYLIGHT                                = 5,
+
+    /**
+     * <p>The camera device's auto-white balance routine is disabled;
+     * the camera device uses cloudy daylight light as the assumed scene
+     * illumination for white balance.</p>
+     * <p>The application's values for ACAMERA_COLOR_CORRECTION_TRANSFORM
+     * and ACAMERA_COLOR_CORRECTION_GAINS are ignored.
+     * For devices that support the MANUAL_POST_PROCESSING capability, the
+     * values used by the camera device for the transform and gains
+     * will be available in the capture result for this request.</p>
+     *
+     * @see ACAMERA_COLOR_CORRECTION_GAINS
+     * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+     */
+    ACAMERA_CONTROL_AWB_MODE_CLOUDY_DAYLIGHT                         = 6,
+
+    /**
+     * <p>The camera device's auto-white balance routine is disabled;
+     * the camera device uses twilight light as the assumed scene
+     * illumination for white balance.</p>
+     * <p>The application's values for ACAMERA_COLOR_CORRECTION_TRANSFORM
+     * and ACAMERA_COLOR_CORRECTION_GAINS are ignored.
+     * For devices that support the MANUAL_POST_PROCESSING capability, the
+     * values used by the camera device for the transform and gains
+     * will be available in the capture result for this request.</p>
+     *
+     * @see ACAMERA_COLOR_CORRECTION_GAINS
+     * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+     */
+    ACAMERA_CONTROL_AWB_MODE_TWILIGHT                                = 7,
+
+    /**
+     * <p>The camera device's auto-white balance routine is disabled;
+     * the camera device uses shade light as the assumed scene
+     * illumination for white balance.</p>
+     * <p>The application's values for ACAMERA_COLOR_CORRECTION_TRANSFORM
+     * and ACAMERA_COLOR_CORRECTION_GAINS are ignored.
+     * For devices that support the MANUAL_POST_PROCESSING capability, the
+     * values used by the camera device for the transform and gains
+     * will be available in the capture result for this request.</p>
+     *
+     * @see ACAMERA_COLOR_CORRECTION_GAINS
+     * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+     */
+    ACAMERA_CONTROL_AWB_MODE_SHADE                                   = 8,
+
+} acamera_metadata_enum_android_control_awb_mode_t;
+
+// ACAMERA_CONTROL_CAPTURE_INTENT
+typedef enum acamera_metadata_enum_acamera_control_capture_intent {
+    /**
+     * <p>The goal of this request doesn't fall into the other
+     * categories. The camera device will default to preview-like
+     * behavior.</p>
+     */
+    ACAMERA_CONTROL_CAPTURE_INTENT_CUSTOM                            = 0,
+
+    /**
+     * <p>This request is for a preview-like use case.</p>
+     * <p>The precapture trigger may be used to start off a metering
+     * w/flash sequence.</p>
+     */
+    ACAMERA_CONTROL_CAPTURE_INTENT_PREVIEW                           = 1,
+
+    /**
+     * <p>This request is for a still capture-type
+     * use case.</p>
+     * <p>If the flash unit is under automatic control, it may fire as needed.</p>
+     */
+    ACAMERA_CONTROL_CAPTURE_INTENT_STILL_CAPTURE                     = 2,
+
+    /**
+     * <p>This request is for a video recording
+     * use case.</p>
+     */
+    ACAMERA_CONTROL_CAPTURE_INTENT_VIDEO_RECORD                      = 3,
+
+    /**
+     * <p>This request is for a video snapshot (still
+     * image while recording video) use case.</p>
+     * <p>The camera device should take the highest-quality image
+     * possible (given the other settings) without disrupting the
+     * frame rate of video recording.  </p>
+     */
+    ACAMERA_CONTROL_CAPTURE_INTENT_VIDEO_SNAPSHOT                    = 4,
+
+    /**
+     * <p>This request is for a ZSL usecase; the
+     * application will stream full-resolution images and
+     * reprocess one or several later for a final
+     * capture.</p>
+     */
+    ACAMERA_CONTROL_CAPTURE_INTENT_ZERO_SHUTTER_LAG                  = 5,
+
+    /**
+     * <p>This request is for manual capture use case where
+     * the applications want to directly control the capture parameters.</p>
+     * <p>For example, the application may wish to manually control
+     * ACAMERA_SENSOR_EXPOSURE_TIME, ACAMERA_SENSOR_SENSITIVITY, etc.</p>
+     *
+     * @see ACAMERA_SENSOR_EXPOSURE_TIME
+     * @see ACAMERA_SENSOR_SENSITIVITY
+     */
+    ACAMERA_CONTROL_CAPTURE_INTENT_MANUAL                            = 6,
+
+} acamera_metadata_enum_android_control_capture_intent_t;
+
+// ACAMERA_CONTROL_EFFECT_MODE
+typedef enum acamera_metadata_enum_acamera_control_effect_mode {
+    /**
+     * <p>No color effect will be applied.</p>
+     */
+    ACAMERA_CONTROL_EFFECT_MODE_OFF                                  = 0,
+
+    /**
+     * <p>A "monocolor" effect where the image is mapped into
+     * a single color.</p>
+     * <p>This will typically be grayscale.</p>
+     */
+    ACAMERA_CONTROL_EFFECT_MODE_MONO                                 = 1,
+
+    /**
+     * <p>A "photo-negative" effect where the image's colors
+     * are inverted.</p>
+     */
+    ACAMERA_CONTROL_EFFECT_MODE_NEGATIVE                             = 2,
+
+    /**
+     * <p>A "solarisation" effect (Sabattier effect) where the
+     * image is wholly or partially reversed in
+     * tone.</p>
+     */
+    ACAMERA_CONTROL_EFFECT_MODE_SOLARIZE                             = 3,
+
+    /**
+     * <p>A "sepia" effect where the image is mapped into warm
+     * gray, red, and brown tones.</p>
+     */
+    ACAMERA_CONTROL_EFFECT_MODE_SEPIA                                = 4,
+
+    /**
+     * <p>A "posterization" effect where the image uses
+     * discrete regions of tone rather than a continuous
+     * gradient of tones.</p>
+     */
+    ACAMERA_CONTROL_EFFECT_MODE_POSTERIZE                            = 5,
+
+    /**
+     * <p>A "whiteboard" effect where the image is typically displayed
+     * as regions of white, with black or grey details.</p>
+     */
+    ACAMERA_CONTROL_EFFECT_MODE_WHITEBOARD                           = 6,
+
+    /**
+     * <p>A "blackboard" effect where the image is typically displayed
+     * as regions of black, with white or grey details.</p>
+     */
+    ACAMERA_CONTROL_EFFECT_MODE_BLACKBOARD                           = 7,
+
+    /**
+     * <p>An "aqua" effect where a blue hue is added to the image.</p>
+     */
+    ACAMERA_CONTROL_EFFECT_MODE_AQUA                                 = 8,
+
+} acamera_metadata_enum_android_control_effect_mode_t;
+
+// ACAMERA_CONTROL_MODE
+typedef enum acamera_metadata_enum_acamera_control_mode {
+    /**
+     * <p>Full application control of pipeline.</p>
+     * <p>All control by the device's metering and focusing (3A)
+     * routines is disabled, and no other settings in
+     * ACAMERA_CONTROL_* have any effect, except that
+     * ACAMERA_CONTROL_CAPTURE_INTENT may be used by the camera
+     * device to select post-processing values for processing
+     * blocks that do not allow for manual control, or are not
+     * exposed by the camera API.</p>
+     * <p>However, the camera device's 3A routines may continue to
+     * collect statistics and update their internal state so that
+     * when control is switched to AUTO mode, good control values
+     * can be immediately applied.</p>
+     *
+     * @see ACAMERA_CONTROL_CAPTURE_INTENT
+     */
+    ACAMERA_CONTROL_MODE_OFF                                         = 0,
+
+    /**
+     * <p>Use settings for each individual 3A routine.</p>
+     * <p>Manual control of capture parameters is disabled. All
+     * controls in ACAMERA_CONTROL_* besides sceneMode take
+     * effect.</p>
+     */
+    ACAMERA_CONTROL_MODE_AUTO                                        = 1,
+
+    /**
+     * <p>Use a specific scene mode.</p>
+     * <p>Enabling this disables control.aeMode, control.awbMode and
+     * control.afMode controls; the camera device will ignore
+     * those settings while USE_SCENE_MODE is active (except for
+     * FACE_PRIORITY scene mode). Other control entries are still active.
+     * This setting can only be used if scene mode is supported (i.e.
+     * ACAMERA_CONTROL_AVAILABLE_SCENE_MODES
+     * contain some modes other than DISABLED).</p>
+     *
+     * @see ACAMERA_CONTROL_AVAILABLE_SCENE_MODES
+     */
+    ACAMERA_CONTROL_MODE_USE_SCENE_MODE                              = 2,
+
+    /**
+     * <p>Same as OFF mode, except that this capture will not be
+     * used by camera device background auto-exposure, auto-white balance and
+     * auto-focus algorithms (3A) to update their statistics.</p>
+     * <p>Specifically, the 3A routines are locked to the last
+     * values set from a request with AUTO, OFF, or
+     * USE_SCENE_MODE, and any statistics or state updates
+     * collected from manual captures with OFF_KEEP_STATE will be
+     * discarded by the camera device.</p>
+     */
+    ACAMERA_CONTROL_MODE_OFF_KEEP_STATE                              = 3,
+
+} acamera_metadata_enum_android_control_mode_t;
+
+// ACAMERA_CONTROL_SCENE_MODE
+typedef enum acamera_metadata_enum_acamera_control_scene_mode {
+    /**
+     * <p>Indicates that no scene modes are set for a given capture request.</p>
+     */
+    ACAMERA_CONTROL_SCENE_MODE_DISABLED                              = 0,
+
+    /**
+     * <p>If face detection support exists, use face
+     * detection data for auto-focus, auto-white balance, and
+     * auto-exposure routines.</p>
+     * <p>If face detection statistics are disabled
+     * (i.e. ACAMERA_STATISTICS_FACE_DETECT_MODE is set to OFF),
+     * this should still operate correctly (but will not return
+     * face detection statistics to the framework).</p>
+     * <p>Unlike the other scene modes, ACAMERA_CONTROL_AE_MODE,
+     * ACAMERA_CONTROL_AWB_MODE, and ACAMERA_CONTROL_AF_MODE
+     * remain active when FACE_PRIORITY is set.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_MODE
+     * @see ACAMERA_CONTROL_AF_MODE
+     * @see ACAMERA_CONTROL_AWB_MODE
+     * @see ACAMERA_STATISTICS_FACE_DETECT_MODE
+     */
+    ACAMERA_CONTROL_SCENE_MODE_FACE_PRIORITY                         = 1,
+
+    /**
+     * <p>Optimized for photos of quickly moving objects.</p>
+     * <p>Similar to SPORTS.</p>
+     */
+    ACAMERA_CONTROL_SCENE_MODE_ACTION                                = 2,
+
+    /**
+     * <p>Optimized for still photos of people.</p>
+     */
+    ACAMERA_CONTROL_SCENE_MODE_PORTRAIT                              = 3,
+
+    /**
+     * <p>Optimized for photos of distant macroscopic objects.</p>
+     */
+    ACAMERA_CONTROL_SCENE_MODE_LANDSCAPE                             = 4,
+
+    /**
+     * <p>Optimized for low-light settings.</p>
+     */
+    ACAMERA_CONTROL_SCENE_MODE_NIGHT                                 = 5,
+
+    /**
+     * <p>Optimized for still photos of people in low-light
+     * settings.</p>
+     */
+    ACAMERA_CONTROL_SCENE_MODE_NIGHT_PORTRAIT                        = 6,
+
+    /**
+     * <p>Optimized for dim, indoor settings where flash must
+     * remain off.</p>
+     */
+    ACAMERA_CONTROL_SCENE_MODE_THEATRE                               = 7,
+
+    /**
+     * <p>Optimized for bright, outdoor beach settings.</p>
+     */
+    ACAMERA_CONTROL_SCENE_MODE_BEACH                                 = 8,
+
+    /**
+     * <p>Optimized for bright, outdoor settings containing snow.</p>
+     */
+    ACAMERA_CONTROL_SCENE_MODE_SNOW                                  = 9,
+
+    /**
+     * <p>Optimized for scenes of the setting sun.</p>
+     */
+    ACAMERA_CONTROL_SCENE_MODE_SUNSET                                = 10,
+
+    /**
+     * <p>Optimized to avoid blurry photos due to small amounts of
+     * device motion (for example: due to hand shake).</p>
+     */
+    ACAMERA_CONTROL_SCENE_MODE_STEADYPHOTO                           = 11,
+
+    /**
+     * <p>Optimized for nighttime photos of fireworks.</p>
+     */
+    ACAMERA_CONTROL_SCENE_MODE_FIREWORKS                             = 12,
+
+    /**
+     * <p>Optimized for photos of quickly moving people.</p>
+     * <p>Similar to ACTION.</p>
+     */
+    ACAMERA_CONTROL_SCENE_MODE_SPORTS                                = 13,
+
+    /**
+     * <p>Optimized for dim, indoor settings with multiple moving
+     * people.</p>
+     */
+    ACAMERA_CONTROL_SCENE_MODE_PARTY                                 = 14,
+
+    /**
+     * <p>Optimized for dim settings where the main light source
+     * is a flame.</p>
+     */
+    ACAMERA_CONTROL_SCENE_MODE_CANDLELIGHT                           = 15,
+
+    /**
+     * <p>Optimized for accurately capturing a photo of barcode
+     * for use by camera applications that wish to read the
+     * barcode value.</p>
+     */
+    ACAMERA_CONTROL_SCENE_MODE_BARCODE                               = 16,
+
+    /**
+     * <p>Turn on a device-specific high dynamic range (HDR) mode.</p>
+     * <p>In this scene mode, the camera device captures images
+     * that keep a larger range of scene illumination levels
+     * visible in the final image. For example, when taking a
+     * picture of a object in front of a bright window, both
+     * the object and the scene through the window may be
+     * visible when using HDR mode, while in normal AUTO mode,
+     * one or the other may be poorly exposed. As a tradeoff,
+     * HDR mode generally takes much longer to capture a single
+     * image, has no user control, and may have other artifacts
+     * depending on the HDR method used.</p>
+     * <p>Therefore, HDR captures operate at a much slower rate
+     * than regular captures.</p>
+     * <p>In this mode, on LIMITED or FULL devices, when a request
+     * is made with a ACAMERA_CONTROL_CAPTURE_INTENT of
+     * STILL_CAPTURE, the camera device will capture an image
+     * using a high dynamic range capture technique.  On LEGACY
+     * devices, captures that target a JPEG-format output will
+     * be captured with HDR, and the capture intent is not
+     * relevant.</p>
+     * <p>The HDR capture may involve the device capturing a burst
+     * of images internally and combining them into one, or it
+     * may involve the device using specialized high dynamic
+     * range capture hardware. In all cases, a single image is
+     * produced in response to a capture request submitted
+     * while in HDR mode.</p>
+     * <p>Since substantial post-processing is generally needed to
+     * produce an HDR image, only YUV, PRIVATE, and JPEG
+     * outputs are supported for LIMITED/FULL device HDR
+     * captures, and only JPEG outputs are supported for LEGACY
+     * HDR captures. Using a RAW output for HDR capture is not
+     * supported.</p>
+     * <p>Some devices may also support always-on HDR, which
+     * applies HDR processing at full frame rate.  For these
+     * devices, intents other than STILL_CAPTURE will also
+     * produce an HDR output with no frame rate impact compared
+     * to normal operation, though the quality may be lower
+     * than for STILL_CAPTURE intents.</p>
+     * <p>If SCENE_MODE_HDR is used with unsupported output types
+     * or capture intents, the images captured will be as if
+     * the SCENE_MODE was not enabled at all.</p>
+     *
+     * @see ACAMERA_CONTROL_CAPTURE_INTENT
+     */
+    ACAMERA_CONTROL_SCENE_MODE_HDR                                   = 18,
+
+} acamera_metadata_enum_android_control_scene_mode_t;
+
+// ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE
+typedef enum acamera_metadata_enum_acamera_control_video_stabilization_mode {
+    /**
+     * <p>Video stabilization is disabled.</p>
+     */
+    ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE_OFF                     = 0,
+
+    /**
+     * <p>Video stabilization is enabled.</p>
+     */
+    ACAMERA_CONTROL_VIDEO_STABILIZATION_MODE_ON                      = 1,
+
+} acamera_metadata_enum_android_control_video_stabilization_mode_t;
+
+// ACAMERA_CONTROL_AE_STATE
+typedef enum acamera_metadata_enum_acamera_control_ae_state {
+    /**
+     * <p>AE is off or recently reset.</p>
+     * <p>When a camera device is opened, it starts in
+     * this state. This is a transient state, the camera device may skip reporting
+     * this state in capture result.</p>
+     */
+    ACAMERA_CONTROL_AE_STATE_INACTIVE                                = 0,
+
+    /**
+     * <p>AE doesn't yet have a good set of control values
+     * for the current scene.</p>
+     * <p>This is a transient state, the camera device may skip
+     * reporting this state in capture result.</p>
+     */
+    ACAMERA_CONTROL_AE_STATE_SEARCHING                               = 1,
+
+    /**
+     * <p>AE has a good set of control values for the
+     * current scene.</p>
+     */
+    ACAMERA_CONTROL_AE_STATE_CONVERGED                               = 2,
+
+    /**
+     * <p>AE has been locked.</p>
+     */
+    ACAMERA_CONTROL_AE_STATE_LOCKED                                  = 3,
+
+    /**
+     * <p>AE has a good set of control values, but flash
+     * needs to be fired for good quality still
+     * capture.</p>
+     */
+    ACAMERA_CONTROL_AE_STATE_FLASH_REQUIRED                          = 4,
+
+    /**
+     * <p>AE has been asked to do a precapture sequence
+     * and is currently executing it.</p>
+     * <p>Precapture can be triggered through setting
+     * ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER to START. Currently
+     * active and completed (if it causes camera device internal AE lock) precapture
+     * metering sequence can be canceled through setting
+     * ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER to CANCEL.</p>
+     * <p>Once PRECAPTURE completes, AE will transition to CONVERGED
+     * or FLASH_REQUIRED as appropriate. This is a transient
+     * state, the camera device may skip reporting this state in
+     * capture result.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
+     */
+    ACAMERA_CONTROL_AE_STATE_PRECAPTURE                              = 5,
+
+} acamera_metadata_enum_android_control_ae_state_t;
+
+// ACAMERA_CONTROL_AF_STATE
+typedef enum acamera_metadata_enum_acamera_control_af_state {
+    /**
+     * <p>AF is off or has not yet tried to scan/been asked
+     * to scan.</p>
+     * <p>When a camera device is opened, it starts in this
+     * state. This is a transient state, the camera device may
+     * skip reporting this state in capture
+     * result.</p>
+     */
+    ACAMERA_CONTROL_AF_STATE_INACTIVE                                = 0,
+
+    /**
+     * <p>AF is currently performing an AF scan initiated the
+     * camera device in a continuous autofocus mode.</p>
+     * <p>Only used by CONTINUOUS_* AF modes. This is a transient
+     * state, the camera device may skip reporting this state in
+     * capture result.</p>
+     */
+    ACAMERA_CONTROL_AF_STATE_PASSIVE_SCAN                            = 1,
+
+    /**
+     * <p>AF currently believes it is in focus, but may
+     * restart scanning at any time.</p>
+     * <p>Only used by CONTINUOUS_* AF modes. This is a transient
+     * state, the camera device may skip reporting this state in
+     * capture result.</p>
+     */
+    ACAMERA_CONTROL_AF_STATE_PASSIVE_FOCUSED                         = 2,
+
+    /**
+     * <p>AF is performing an AF scan because it was
+     * triggered by AF trigger.</p>
+     * <p>Only used by AUTO or MACRO AF modes. This is a transient
+     * state, the camera device may skip reporting this state in
+     * capture result.</p>
+     */
+    ACAMERA_CONTROL_AF_STATE_ACTIVE_SCAN                             = 3,
+
+    /**
+     * <p>AF believes it is focused correctly and has locked
+     * focus.</p>
+     * <p>This state is reached only after an explicit START AF trigger has been
+     * sent (ACAMERA_CONTROL_AF_TRIGGER), when good focus has been obtained.</p>
+     * <p>The lens will remain stationary until the AF mode (ACAMERA_CONTROL_AF_MODE) is changed or
+     * a new AF trigger is sent to the camera device (ACAMERA_CONTROL_AF_TRIGGER).</p>
+     *
+     * @see ACAMERA_CONTROL_AF_MODE
+     * @see ACAMERA_CONTROL_AF_TRIGGER
+     */
+    ACAMERA_CONTROL_AF_STATE_FOCUSED_LOCKED                          = 4,
+
+    /**
+     * <p>AF has failed to focus successfully and has locked
+     * focus.</p>
+     * <p>This state is reached only after an explicit START AF trigger has been
+     * sent (ACAMERA_CONTROL_AF_TRIGGER), when good focus cannot be obtained.</p>
+     * <p>The lens will remain stationary until the AF mode (ACAMERA_CONTROL_AF_MODE) is changed or
+     * a new AF trigger is sent to the camera device (ACAMERA_CONTROL_AF_TRIGGER).</p>
+     *
+     * @see ACAMERA_CONTROL_AF_MODE
+     * @see ACAMERA_CONTROL_AF_TRIGGER
+     */
+    ACAMERA_CONTROL_AF_STATE_NOT_FOCUSED_LOCKED                      = 5,
+
+    /**
+     * <p>AF finished a passive scan without finding focus,
+     * and may restart scanning at any time.</p>
+     * <p>Only used by CONTINUOUS_* AF modes. This is a transient state, the camera
+     * device may skip reporting this state in capture result.</p>
+     * <p>LEGACY camera devices do not support this state. When a passive
+     * scan has finished, it will always go to PASSIVE_FOCUSED.</p>
+     */
+    ACAMERA_CONTROL_AF_STATE_PASSIVE_UNFOCUSED                       = 6,
+
+} acamera_metadata_enum_android_control_af_state_t;
+
+// ACAMERA_CONTROL_AWB_STATE
+typedef enum acamera_metadata_enum_acamera_control_awb_state {
+    /**
+     * <p>AWB is not in auto mode, or has not yet started metering.</p>
+     * <p>When a camera device is opened, it starts in this
+     * state. This is a transient state, the camera device may
+     * skip reporting this state in capture
+     * result.</p>
+     */
+    ACAMERA_CONTROL_AWB_STATE_INACTIVE                               = 0,
+
+    /**
+     * <p>AWB doesn't yet have a good set of control
+     * values for the current scene.</p>
+     * <p>This is a transient state, the camera device
+     * may skip reporting this state in capture result.</p>
+     */
+    ACAMERA_CONTROL_AWB_STATE_SEARCHING                              = 1,
+
+    /**
+     * <p>AWB has a good set of control values for the
+     * current scene.</p>
+     */
+    ACAMERA_CONTROL_AWB_STATE_CONVERGED                              = 2,
+
+    /**
+     * <p>AWB has been locked.</p>
+     */
+    ACAMERA_CONTROL_AWB_STATE_LOCKED                                 = 3,
+
+} acamera_metadata_enum_android_control_awb_state_t;
+
+// ACAMERA_CONTROL_AE_LOCK_AVAILABLE
+typedef enum acamera_metadata_enum_acamera_control_ae_lock_available {
+    ACAMERA_CONTROL_AE_LOCK_AVAILABLE_FALSE                          = 0,
+
+    ACAMERA_CONTROL_AE_LOCK_AVAILABLE_TRUE                           = 1,
+
+} acamera_metadata_enum_android_control_ae_lock_available_t;
+
+// ACAMERA_CONTROL_AWB_LOCK_AVAILABLE
+typedef enum acamera_metadata_enum_acamera_control_awb_lock_available {
+    ACAMERA_CONTROL_AWB_LOCK_AVAILABLE_FALSE                         = 0,
+
+    ACAMERA_CONTROL_AWB_LOCK_AVAILABLE_TRUE                          = 1,
+
+} acamera_metadata_enum_android_control_awb_lock_available_t;
+
+// ACAMERA_CONTROL_ENABLE_ZSL
+typedef enum acamera_metadata_enum_acamera_control_enable_zsl {
+    /**
+     * <p>Requests with ACAMERA_CONTROL_CAPTURE_INTENT == STILL_CAPTURE must be captured
+     * after previous requests.</p>
+     *
+     * @see ACAMERA_CONTROL_CAPTURE_INTENT
+     */
+    ACAMERA_CONTROL_ENABLE_ZSL_FALSE                                 = 0,
+
+    /**
+     * <p>Requests with ACAMERA_CONTROL_CAPTURE_INTENT == STILL_CAPTURE may or may not be
+     * captured before previous requests.</p>
+     *
+     * @see ACAMERA_CONTROL_CAPTURE_INTENT
+     */
+    ACAMERA_CONTROL_ENABLE_ZSL_TRUE                                  = 1,
+
+} acamera_metadata_enum_android_control_enable_zsl_t;
+
+
+
+// ACAMERA_EDGE_MODE
+typedef enum acamera_metadata_enum_acamera_edge_mode {
+    /**
+     * <p>No edge enhancement is applied.</p>
+     */
+    ACAMERA_EDGE_MODE_OFF                                            = 0,
+
+    /**
+     * <p>Apply edge enhancement at a quality level that does not slow down frame rate
+     * relative to sensor output. It may be the same as OFF if edge enhancement will
+     * slow down frame rate relative to sensor.</p>
+     */
+    ACAMERA_EDGE_MODE_FAST                                           = 1,
+
+    /**
+     * <p>Apply high-quality edge enhancement, at a cost of possibly reduced output frame rate.</p>
+     */
+    ACAMERA_EDGE_MODE_HIGH_QUALITY                                   = 2,
+
+    /**
+     * <p>Edge enhancement is applied at different levels for different output streams,
+     * based on resolution. Streams at maximum recording resolution (see {@link
+     * ACameraDevice_createCaptureSession}) or below have
+     * edge enhancement applied, while higher-resolution streams have no edge enhancement
+     * applied. The level of edge enhancement for low-resolution streams is tuned so that
+     * frame rate is not impacted, and the quality is equal to or better than FAST (since it
+     * is only applied to lower-resolution outputs, quality may improve from FAST).</p>
+     * <p>This mode is intended to be used by applications operating in a zero-shutter-lag mode
+     * with YUV or PRIVATE reprocessing, where the application continuously captures
+     * high-resolution intermediate buffers into a circular buffer, from which a final image is
+     * produced via reprocessing when a user takes a picture.  For such a use case, the
+     * high-resolution buffers must not have edge enhancement applied to maximize efficiency of
+     * preview and to avoid double-applying enhancement when reprocessed, while low-resolution
+     * buffers (used for recording or preview, generally) need edge enhancement applied for
+     * reasonable preview quality.</p>
+     * <p>This mode is guaranteed to be supported by devices that support either the
+     * YUV_REPROCESSING or PRIVATE_REPROCESSING capabilities
+     * (ACAMERA_REQUEST_AVAILABLE_CAPABILITIES lists either of those capabilities) and it will
+     * be the default mode for CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG template.</p>
+     *
+     * @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+     */
+    ACAMERA_EDGE_MODE_ZERO_SHUTTER_LAG                               = 3,
+
+} acamera_metadata_enum_android_edge_mode_t;
+
+
+// ACAMERA_FLASH_MODE
+typedef enum acamera_metadata_enum_acamera_flash_mode {
+    /**
+     * <p>Do not fire the flash for this capture.</p>
+     */
+    ACAMERA_FLASH_MODE_OFF                                           = 0,
+
+    /**
+     * <p>If the flash is available and charged, fire flash
+     * for this capture.</p>
+     */
+    ACAMERA_FLASH_MODE_SINGLE                                        = 1,
+
+    /**
+     * <p>Transition flash to continuously on.</p>
+     */
+    ACAMERA_FLASH_MODE_TORCH                                         = 2,
+
+} acamera_metadata_enum_android_flash_mode_t;
+
+// ACAMERA_FLASH_STATE
+typedef enum acamera_metadata_enum_acamera_flash_state {
+    /**
+     * <p>No flash on camera.</p>
+     */
+    ACAMERA_FLASH_STATE_UNAVAILABLE                                  = 0,
+
+    /**
+     * <p>Flash is charging and cannot be fired.</p>
+     */
+    ACAMERA_FLASH_STATE_CHARGING                                     = 1,
+
+    /**
+     * <p>Flash is ready to fire.</p>
+     */
+    ACAMERA_FLASH_STATE_READY                                        = 2,
+
+    /**
+     * <p>Flash fired for this capture.</p>
+     */
+    ACAMERA_FLASH_STATE_FIRED                                        = 3,
+
+    /**
+     * <p>Flash partially illuminated this frame.</p>
+     * <p>This is usually due to the next or previous frame having
+     * the flash fire, and the flash spilling into this capture
+     * due to hardware limitations.</p>
+     */
+    ACAMERA_FLASH_STATE_PARTIAL                                      = 4,
+
+} acamera_metadata_enum_android_flash_state_t;
+
+
+// ACAMERA_FLASH_INFO_AVAILABLE
+typedef enum acamera_metadata_enum_acamera_flash_info_available {
+    ACAMERA_FLASH_INFO_AVAILABLE_FALSE                               = 0,
+
+    ACAMERA_FLASH_INFO_AVAILABLE_TRUE                                = 1,
+
+} acamera_metadata_enum_android_flash_info_available_t;
+
+
+// ACAMERA_HOT_PIXEL_MODE
+typedef enum acamera_metadata_enum_acamera_hot_pixel_mode {
+    /**
+     * <p>No hot pixel correction is applied.</p>
+     * <p>The frame rate must not be reduced relative to sensor raw output
+     * for this option.</p>
+     * <p>The hotpixel map may be returned in ACAMERA_STATISTICS_HOT_PIXEL_MAP.</p>
+     *
+     * @see ACAMERA_STATISTICS_HOT_PIXEL_MAP
+     */
+    ACAMERA_HOT_PIXEL_MODE_OFF                                       = 0,
+
+    /**
+     * <p>Hot pixel correction is applied, without reducing frame
+     * rate relative to sensor raw output.</p>
+     * <p>The hotpixel map may be returned in ACAMERA_STATISTICS_HOT_PIXEL_MAP.</p>
+     *
+     * @see ACAMERA_STATISTICS_HOT_PIXEL_MAP
+     */
+    ACAMERA_HOT_PIXEL_MODE_FAST                                      = 1,
+
+    /**
+     * <p>High-quality hot pixel correction is applied, at a cost
+     * of possibly reduced frame rate relative to sensor raw output.</p>
+     * <p>The hotpixel map may be returned in ACAMERA_STATISTICS_HOT_PIXEL_MAP.</p>
+     *
+     * @see ACAMERA_STATISTICS_HOT_PIXEL_MAP
+     */
+    ACAMERA_HOT_PIXEL_MODE_HIGH_QUALITY                              = 2,
+
+} acamera_metadata_enum_android_hot_pixel_mode_t;
+
+
+
+// ACAMERA_LENS_OPTICAL_STABILIZATION_MODE
+typedef enum acamera_metadata_enum_acamera_lens_optical_stabilization_mode {
+    /**
+     * <p>Optical stabilization is unavailable.</p>
+     */
+    ACAMERA_LENS_OPTICAL_STABILIZATION_MODE_OFF                      = 0,
+
+    /**
+     * <p>Optical stabilization is enabled.</p>
+     */
+    ACAMERA_LENS_OPTICAL_STABILIZATION_MODE_ON                       = 1,
+
+} acamera_metadata_enum_android_lens_optical_stabilization_mode_t;
+
+// ACAMERA_LENS_FACING
+typedef enum acamera_metadata_enum_acamera_lens_facing {
+    /**
+     * <p>The camera device faces the same direction as the device's screen.</p>
+     */
+    ACAMERA_LENS_FACING_FRONT                                        = 0,
+
+    /**
+     * <p>The camera device faces the opposite direction as the device's screen.</p>
+     */
+    ACAMERA_LENS_FACING_BACK                                         = 1,
+
+    /**
+     * <p>The camera device is an external camera, and has no fixed facing relative to the
+     * device's screen.</p>
+     */
+    ACAMERA_LENS_FACING_EXTERNAL                                     = 2,
+
+} acamera_metadata_enum_android_lens_facing_t;
+
+// ACAMERA_LENS_STATE
+typedef enum acamera_metadata_enum_acamera_lens_state {
+    /**
+     * <p>The lens parameters (ACAMERA_LENS_FOCAL_LENGTH, ACAMERA_LENS_FOCUS_DISTANCE,
+     * ACAMERA_LENS_FILTER_DENSITY and ACAMERA_LENS_APERTURE) are not changing.</p>
+     *
+     * @see ACAMERA_LENS_APERTURE
+     * @see ACAMERA_LENS_FILTER_DENSITY
+     * @see ACAMERA_LENS_FOCAL_LENGTH
+     * @see ACAMERA_LENS_FOCUS_DISTANCE
+     */
+    ACAMERA_LENS_STATE_STATIONARY                                    = 0,
+
+    /**
+     * <p>One or several of the lens parameters
+     * (ACAMERA_LENS_FOCAL_LENGTH, ACAMERA_LENS_FOCUS_DISTANCE,
+     * ACAMERA_LENS_FILTER_DENSITY or ACAMERA_LENS_APERTURE) is
+     * currently changing.</p>
+     *
+     * @see ACAMERA_LENS_APERTURE
+     * @see ACAMERA_LENS_FILTER_DENSITY
+     * @see ACAMERA_LENS_FOCAL_LENGTH
+     * @see ACAMERA_LENS_FOCUS_DISTANCE
+     */
+    ACAMERA_LENS_STATE_MOVING                                        = 1,
+
+} acamera_metadata_enum_android_lens_state_t;
+
+
+// ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION
+typedef enum acamera_metadata_enum_acamera_lens_info_focus_distance_calibration {
+    /**
+     * <p>The lens focus distance is not accurate, and the units used for
+     * ACAMERA_LENS_FOCUS_DISTANCE do not correspond to any physical units.</p>
+     * <p>Setting the lens to the same focus distance on separate occasions may
+     * result in a different real focus distance, depending on factors such
+     * as the orientation of the device, the age of the focusing mechanism,
+     * and the device temperature. The focus distance value will still be
+     * in the range of <code>[0, ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE]</code>, where 0
+     * represents the farthest focus.</p>
+     *
+     * @see ACAMERA_LENS_FOCUS_DISTANCE
+     * @see ACAMERA_LENS_INFO_MINIMUM_FOCUS_DISTANCE
+     */
+    ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION_UNCALIBRATED        = 0,
+
+    /**
+     * <p>The lens focus distance is measured in diopters.</p>
+     * <p>However, setting the lens to the same focus distance
+     * on separate occasions may result in a different real
+     * focus distance, depending on factors such as the
+     * orientation of the device, the age of the focusing
+     * mechanism, and the device temperature.</p>
+     */
+    ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION_APPROXIMATE         = 1,
+
+    /**
+     * <p>The lens focus distance is measured in diopters, and
+     * is calibrated.</p>
+     * <p>The lens mechanism is calibrated so that setting the
+     * same focus distance is repeatable on multiple
+     * occasions with good accuracy, and the focus distance
+     * corresponds to the real physical distance to the plane
+     * of best focus.</p>
+     */
+    ACAMERA_LENS_INFO_FOCUS_DISTANCE_CALIBRATION_CALIBRATED          = 2,
+
+} acamera_metadata_enum_android_lens_info_focus_distance_calibration_t;
+
+
+// ACAMERA_NOISE_REDUCTION_MODE
+typedef enum acamera_metadata_enum_acamera_noise_reduction_mode {
+    /**
+     * <p>No noise reduction is applied.</p>
+     */
+    ACAMERA_NOISE_REDUCTION_MODE_OFF                                 = 0,
+
+    /**
+     * <p>Noise reduction is applied without reducing frame rate relative to sensor
+     * output. It may be the same as OFF if noise reduction will reduce frame rate
+     * relative to sensor.</p>
+     */
+    ACAMERA_NOISE_REDUCTION_MODE_FAST                                = 1,
+
+    /**
+     * <p>High-quality noise reduction is applied, at the cost of possibly reduced frame
+     * rate relative to sensor output.</p>
+     */
+    ACAMERA_NOISE_REDUCTION_MODE_HIGH_QUALITY                        = 2,
+
+    /**
+     * <p>MINIMAL noise reduction is applied without reducing frame rate relative to
+     * sensor output. </p>
+     */
+    ACAMERA_NOISE_REDUCTION_MODE_MINIMAL                             = 3,
+
+    /**
+     * <p>Noise reduction is applied at different levels for different output streams,
+     * based on resolution. Streams at maximum recording resolution (see {@link
+     * ACameraDevice_createCaptureSession}) or below have noise
+     * reduction applied, while higher-resolution streams have MINIMAL (if supported) or no
+     * noise reduction applied (if MINIMAL is not supported.) The degree of noise reduction
+     * for low-resolution streams is tuned so that frame rate is not impacted, and the quality
+     * is equal to or better than FAST (since it is only applied to lower-resolution outputs,
+     * quality may improve from FAST).</p>
+     * <p>This mode is intended to be used by applications operating in a zero-shutter-lag mode
+     * with YUV or PRIVATE reprocessing, where the application continuously captures
+     * high-resolution intermediate buffers into a circular buffer, from which a final image is
+     * produced via reprocessing when a user takes a picture.  For such a use case, the
+     * high-resolution buffers must not have noise reduction applied to maximize efficiency of
+     * preview and to avoid over-applying noise filtering when reprocessing, while
+     * low-resolution buffers (used for recording or preview, generally) need noise reduction
+     * applied for reasonable preview quality.</p>
+     * <p>This mode is guaranteed to be supported by devices that support either the
+     * YUV_REPROCESSING or PRIVATE_REPROCESSING capabilities
+     * (ACAMERA_REQUEST_AVAILABLE_CAPABILITIES lists either of those capabilities) and it will
+     * be the default mode for CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG template.</p>
+     *
+     * @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+     */
+    ACAMERA_NOISE_REDUCTION_MODE_ZERO_SHUTTER_LAG                    = 4,
+
+} acamera_metadata_enum_android_noise_reduction_mode_t;
+
+
+
+// ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+typedef enum acamera_metadata_enum_acamera_request_available_capabilities {
+    /**
+     * <p>The minimal set of capabilities that every camera
+     * device (regardless of ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL)
+     * supports.</p>
+     * <p>This capability is listed by all normal devices, and
+     * indicates that the camera device has a feature set
+     * that's comparable to the baseline requirements for the
+     * older android.hardware.Camera API.</p>
+     * <p>Devices with the DEPTH_OUTPUT capability might not list this
+     * capability, indicating that they support only depth measurement,
+     * not standard color output.</p>
+     *
+     * @see ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL
+     */
+    ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE       = 0,
+
+    /**
+     * <p>The camera device can be manually controlled (3A algorithms such
+     * as auto-exposure, and auto-focus can be bypassed).
+     * The camera device supports basic manual control of the sensor image
+     * acquisition related stages. This means the following controls are
+     * guaranteed to be supported:</p>
+     * <ul>
+     * <li>Manual frame duration control<ul>
+     * <li>ACAMERA_SENSOR_FRAME_DURATION</li>
+     * <li>ACAMERA_SENSOR_INFO_MAX_FRAME_DURATION</li>
+     * </ul>
+     * </li>
+     * <li>Manual exposure control<ul>
+     * <li>ACAMERA_SENSOR_EXPOSURE_TIME</li>
+     * <li>ACAMERA_SENSOR_INFO_EXPOSURE_TIME_RANGE</li>
+     * </ul>
+     * </li>
+     * <li>Manual sensitivity control<ul>
+     * <li>ACAMERA_SENSOR_SENSITIVITY</li>
+     * <li>ACAMERA_SENSOR_INFO_SENSITIVITY_RANGE</li>
+     * </ul>
+     * </li>
+     * <li>Manual lens control (if the lens is adjustable)<ul>
+     * <li>ACAMERA_LENS_*</li>
+     * </ul>
+     * </li>
+     * <li>Manual flash control (if a flash unit is present)<ul>
+     * <li>ACAMERA_FLASH_*</li>
+     * </ul>
+     * </li>
+     * <li>Manual black level locking<ul>
+     * <li>ACAMERA_BLACK_LEVEL_LOCK</li>
+     * </ul>
+     * </li>
+     * <li>Auto exposure lock<ul>
+     * <li>ACAMERA_CONTROL_AE_LOCK</li>
+     * </ul>
+     * </li>
+     * </ul>
+     * <p>If any of the above 3A algorithms are enabled, then the camera
+     * device will accurately report the values applied by 3A in the
+     * result.</p>
+     * <p>A given camera device may also support additional manual sensor controls,
+     * but this capability only covers the above list of controls.</p>
+     * <p>If this is supported, android.scaler.streamConfigurationMap will
+     * additionally return a min frame duration that is greater than
+     * zero for each supported size-format combination.</p>
+     *
+     * @see ACAMERA_BLACK_LEVEL_LOCK
+     * @see ACAMERA_CONTROL_AE_LOCK
+     * @see ACAMERA_SENSOR_EXPOSURE_TIME
+     * @see ACAMERA_SENSOR_FRAME_DURATION
+     * @see ACAMERA_SENSOR_INFO_EXPOSURE_TIME_RANGE
+     * @see ACAMERA_SENSOR_INFO_MAX_FRAME_DURATION
+     * @see ACAMERA_SENSOR_INFO_SENSITIVITY_RANGE
+     * @see ACAMERA_SENSOR_SENSITIVITY
+     */
+    ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_MANUAL_SENSOR             = 1,
+
+    /**
+     * <p>The camera device post-processing stages can be manually controlled.
+     * The camera device supports basic manual control of the image post-processing
+     * stages. This means the following controls are guaranteed to be supported:</p>
+     * <ul>
+     * <li>
+     * <p>Manual tonemap control</p>
+     * <ul>
+     * <li>android.tonemap.curve</li>
+     * <li>ACAMERA_TONEMAP_MODE</li>
+     * <li>ACAMERA_TONEMAP_MAX_CURVE_POINTS</li>
+     * <li>ACAMERA_TONEMAP_GAMMA</li>
+     * <li>ACAMERA_TONEMAP_PRESET_CURVE</li>
+     * </ul>
+     * </li>
+     * <li>
+     * <p>Manual white balance control</p>
+     * <ul>
+     * <li>ACAMERA_COLOR_CORRECTION_TRANSFORM</li>
+     * <li>ACAMERA_COLOR_CORRECTION_GAINS</li>
+     * </ul>
+     * </li>
+     * <li>Manual lens shading map control<ul>
+     * <li>ACAMERA_SHADING_MODE</li>
+     * <li>ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE</li>
+     * <li>ACAMERA_STATISTICS_LENS_SHADING_MAP</li>
+     * <li>ACAMERA_LENS_INFO_SHADING_MAP_SIZE</li>
+     * </ul>
+     * </li>
+     * <li>Manual aberration correction control (if aberration correction is supported)<ul>
+     * <li>ACAMERA_COLOR_CORRECTION_ABERRATION_MODE</li>
+     * <li>ACAMERA_COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES</li>
+     * </ul>
+     * </li>
+     * <li>Auto white balance lock<ul>
+     * <li>ACAMERA_CONTROL_AWB_LOCK</li>
+     * </ul>
+     * </li>
+     * </ul>
+     * <p>If auto white balance is enabled, then the camera device
+     * will accurately report the values applied by AWB in the result.</p>
+     * <p>A given camera device may also support additional post-processing
+     * controls, but this capability only covers the above list of controls.</p>
+     *
+     * @see ACAMERA_COLOR_CORRECTION_ABERRATION_MODE
+     * @see ACAMERA_COLOR_CORRECTION_AVAILABLE_ABERRATION_MODES
+     * @see ACAMERA_COLOR_CORRECTION_GAINS
+     * @see ACAMERA_COLOR_CORRECTION_TRANSFORM
+     * @see ACAMERA_CONTROL_AWB_LOCK
+     * @see ACAMERA_LENS_INFO_SHADING_MAP_SIZE
+     * @see ACAMERA_SHADING_MODE
+     * @see ACAMERA_STATISTICS_LENS_SHADING_MAP
+     * @see ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE
+     * @see ACAMERA_TONEMAP_GAMMA
+     * @see ACAMERA_TONEMAP_MAX_CURVE_POINTS
+     * @see ACAMERA_TONEMAP_MODE
+     * @see ACAMERA_TONEMAP_PRESET_CURVE
+     */
+    ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_MANUAL_POST_PROCESSING    = 2,
+
+    /**
+     * <p>The camera device supports outputting RAW buffers and
+     * metadata for interpreting them.</p>
+     * <p>Devices supporting the RAW capability allow both for
+     * saving DNG files, and for direct application processing of
+     * raw sensor images.</p>
+     * <ul>
+     * <li>RAW_SENSOR is supported as an output format.</li>
+     * <li>The maximum available resolution for RAW_SENSOR streams
+     *   will match either the value in
+     *   ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE or
+     *   ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE.</li>
+     * <li>All DNG-related optional metadata entries are provided
+     *   by the camera device.</li>
+     * </ul>
+     *
+     * @see ACAMERA_SENSOR_INFO_PIXEL_ARRAY_SIZE
+     * @see ACAMERA_SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE
+     */
+    ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_RAW                       = 3,
+
+    /**
+     * <p>The camera device supports accurately reporting the sensor settings for many of
+     * the sensor controls while the built-in 3A algorithm is running.  This allows
+     * reporting of sensor settings even when these settings cannot be manually changed.</p>
+     * <p>The values reported for the following controls are guaranteed to be available
+     * in the CaptureResult, including when 3A is enabled:</p>
+     * <ul>
+     * <li>Exposure control<ul>
+     * <li>ACAMERA_SENSOR_EXPOSURE_TIME</li>
+     * </ul>
+     * </li>
+     * <li>Sensitivity control<ul>
+     * <li>ACAMERA_SENSOR_SENSITIVITY</li>
+     * </ul>
+     * </li>
+     * <li>Lens controls (if the lens is adjustable)<ul>
+     * <li>ACAMERA_LENS_FOCUS_DISTANCE</li>
+     * <li>ACAMERA_LENS_APERTURE</li>
+     * </ul>
+     * </li>
+     * </ul>
+     * <p>This capability is a subset of the MANUAL_SENSOR control capability, and will
+     * always be included if the MANUAL_SENSOR capability is available.</p>
+     *
+     * @see ACAMERA_LENS_APERTURE
+     * @see ACAMERA_LENS_FOCUS_DISTANCE
+     * @see ACAMERA_SENSOR_EXPOSURE_TIME
+     * @see ACAMERA_SENSOR_SENSITIVITY
+     */
+    ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_READ_SENSOR_SETTINGS      = 5,
+
+    /**
+     * <p>The camera device supports capturing high-resolution images at &gt;= 20 frames per
+     * second, in at least the uncompressed YUV format, when post-processing settings are set
+     * to FAST. Additionally, maximum-resolution images can be captured at &gt;= 10 frames
+     * per second.  Here, 'high resolution' means at least 8 megapixels, or the maximum
+     * resolution of the device, whichever is smaller.</p>
+     * <p>More specifically, this means that at least one output {@link
+     * AIMAGE_FORMAT_YUV_420_888} size listed in
+     * {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS} is larger or equal to the
+     * 'high resolution' defined above, and can be captured at at least 20 fps.
+     * For the largest {@link AIMAGE_FORMAT_YUV_420_888} size listed in
+     * {@link ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS}, camera device can capture this
+     * size for at least 10 frames per second.
+     * Also the ACAMERA_CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES entry lists at least one FPS range
+     * where the minimum FPS is &gt;= 1 / minimumFrameDuration for the largest YUV_420_888 size.</p>
+     * <p>If the device supports the {@link AIMAGE_FORMAT_RAW10}, {@link
+     * AIMAGE_FORMAT_RAW12}, then those can also be captured at the same rate
+     * as the maximum-size YUV_420_888 resolution is.</p>
+     * <p>In addition, the ACAMERA_SYNC_MAX_LATENCY field is guaranted to have a value between 0
+     * and 4, inclusive. ACAMERA_CONTROL_AE_LOCK_AVAILABLE and ACAMERA_CONTROL_AWB_LOCK_AVAILABLE
+     * are also guaranteed to be <code>true</code> so burst capture with these two locks ON yields
+     * consistent image output.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES
+     * @see ACAMERA_CONTROL_AE_LOCK_AVAILABLE
+     * @see ACAMERA_CONTROL_AWB_LOCK_AVAILABLE
+     * @see ACAMERA_SYNC_MAX_LATENCY
+     */
+    ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_BURST_CAPTURE             = 6,
+
+    /**
+     * <p>The camera device can produce depth measurements from its field of view.</p>
+     * <p>This capability requires the camera device to support the following:</p>
+     * <ul>
+     * <li>{@link AIMAGE_FORMAT_DEPTH16} is supported as an output format.</li>
+     * <li>{@link AIMAGE_FORMAT_DEPTH_POINT_CLOUD} is optionally supported as an
+     *   output format.</li>
+     * <li>This camera device, and all camera devices with the same ACAMERA_LENS_FACING,
+     *   will list the following calibration entries in {@link ACameraMetadata} from both
+     *   {@link ACameraManager_getCameraCharacteristics} and
+     *   {@link ACameraCaptureSession_captureCallback_result}:<ul>
+     * <li>ACAMERA_LENS_POSE_TRANSLATION</li>
+     * <li>ACAMERA_LENS_POSE_ROTATION</li>
+     * <li>ACAMERA_LENS_INTRINSIC_CALIBRATION</li>
+     * <li>ACAMERA_LENS_RADIAL_DISTORTION</li>
+     * </ul>
+     * </li>
+     * <li>The ACAMERA_DEPTH_DEPTH_IS_EXCLUSIVE entry is listed by this device.</li>
+     * <li>A LIMITED camera with only the DEPTH_OUTPUT capability does not have to support
+     *   normal YUV_420_888, JPEG, and PRIV-format outputs. It only has to support the DEPTH16
+     *   format.</li>
+     * </ul>
+     * <p>Generally, depth output operates at a slower frame rate than standard color capture,
+     * so the DEPTH16 and DEPTH_POINT_CLOUD formats will commonly have a stall duration that
+     * should be accounted for (see
+     * {@link ACAMERA_DEPTH_AVAILABLE_DEPTH_STALL_DURATIONS}).
+     * On a device that supports both depth and color-based output, to enable smooth preview,
+     * using a repeating burst is recommended, where a depth-output target is only included
+     * once every N frames, where N is the ratio between preview output rate and depth output
+     * rate, including depth stall time.</p>
+     *
+     * @see ACAMERA_DEPTH_DEPTH_IS_EXCLUSIVE
+     * @see ACAMERA_LENS_FACING
+     * @see ACAMERA_LENS_INTRINSIC_CALIBRATION
+     * @see ACAMERA_LENS_POSE_ROTATION
+     * @see ACAMERA_LENS_POSE_TRANSLATION
+     * @see ACAMERA_LENS_RADIAL_DISTORTION
+     */
+    ACAMERA_REQUEST_AVAILABLE_CAPABILITIES_DEPTH_OUTPUT              = 8,
+
+} acamera_metadata_enum_android_request_available_capabilities_t;
+
+
+// ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS
+typedef enum acamera_metadata_enum_acamera_scaler_available_stream_configurations {
+    ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT            = 0,
+
+    ACAMERA_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_INPUT             = 1,
+
+} acamera_metadata_enum_android_scaler_available_stream_configurations_t;
+
+// ACAMERA_SCALER_CROPPING_TYPE
+typedef enum acamera_metadata_enum_acamera_scaler_cropping_type {
+    /**
+     * <p>The camera device only supports centered crop regions.</p>
+     */
+    ACAMERA_SCALER_CROPPING_TYPE_CENTER_ONLY                         = 0,
+
+    /**
+     * <p>The camera device supports arbitrarily chosen crop regions.</p>
+     */
+    ACAMERA_SCALER_CROPPING_TYPE_FREEFORM                            = 1,
+
+} acamera_metadata_enum_android_scaler_cropping_type_t;
+
+
+// ACAMERA_SENSOR_REFERENCE_ILLUMINANT1
+typedef enum acamera_metadata_enum_acamera_sensor_reference_illuminant1 {
+    ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_DAYLIGHT                    = 1,
+
+    ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_FLUORESCENT                 = 2,
+
+    /**
+     * <p>Incandescent light</p>
+     */
+    ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_TUNGSTEN                    = 3,
+
+    ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_FLASH                       = 4,
+
+    ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_FINE_WEATHER                = 9,
+
+    ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_CLOUDY_WEATHER              = 10,
+
+    ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_SHADE                       = 11,
+
+    /**
+     * <p>D 5700 - 7100K</p>
+     */
+    ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_DAYLIGHT_FLUORESCENT        = 12,
+
+    /**
+     * <p>N 4600 - 5400K</p>
+     */
+    ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_DAY_WHITE_FLUORESCENT       = 13,
+
+    /**
+     * <p>W 3900 - 4500K</p>
+     */
+    ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_COOL_WHITE_FLUORESCENT      = 14,
+
+    /**
+     * <p>WW 3200 - 3700K</p>
+     */
+    ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_WHITE_FLUORESCENT           = 15,
+
+    ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_STANDARD_A                  = 17,
+
+    ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_STANDARD_B                  = 18,
+
+    ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_STANDARD_C                  = 19,
+
+    ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_D55                         = 20,
+
+    ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_D65                         = 21,
+
+    ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_D75                         = 22,
+
+    ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_D50                         = 23,
+
+    ACAMERA_SENSOR_REFERENCE_ILLUMINANT1_ISO_STUDIO_TUNGSTEN         = 24,
+
+} acamera_metadata_enum_android_sensor_reference_illuminant1_t;
+
+// ACAMERA_SENSOR_TEST_PATTERN_MODE
+typedef enum acamera_metadata_enum_acamera_sensor_test_pattern_mode {
+    /**
+     * <p>No test pattern mode is used, and the camera
+     * device returns captures from the image sensor.</p>
+     * <p>This is the default if the key is not set.</p>
+     */
+    ACAMERA_SENSOR_TEST_PATTERN_MODE_OFF                             = 0,
+
+    /**
+     * <p>Each pixel in <code>[R, G_even, G_odd, B]</code> is replaced by its
+     * respective color channel provided in
+     * ACAMERA_SENSOR_TEST_PATTERN_DATA.</p>
+     * <p>For example:</p>
+     * <pre><code>android.testPatternData = [0, 0xFFFFFFFF, 0xFFFFFFFF, 0]
+     * </code></pre>
+     * <p>All green pixels are 100% green. All red/blue pixels are black.</p>
+     * <pre><code>android.testPatternData = [0xFFFFFFFF, 0, 0xFFFFFFFF, 0]
+     * </code></pre>
+     * <p>All red pixels are 100% red. Only the odd green pixels
+     * are 100% green. All blue pixels are 100% black.</p>
+     *
+     * @see ACAMERA_SENSOR_TEST_PATTERN_DATA
+     */
+    ACAMERA_SENSOR_TEST_PATTERN_MODE_SOLID_COLOR                     = 1,
+
+    /**
+     * <p>All pixel data is replaced with an 8-bar color pattern.</p>
+     * <p>The vertical bars (left-to-right) are as follows:</p>
+     * <ul>
+     * <li>100% white</li>
+     * <li>yellow</li>
+     * <li>cyan</li>
+     * <li>green</li>
+     * <li>magenta</li>
+     * <li>red</li>
+     * <li>blue</li>
+     * <li>black</li>
+     * </ul>
+     * <p>In general the image would look like the following:</p>
+     * <pre><code>W Y C G M R B K
+     * W Y C G M R B K
+     * W Y C G M R B K
+     * W Y C G M R B K
+     * W Y C G M R B K
+     * . . . . . . . .
+     * . . . . . . . .
+     * . . . . . . . .
+     *
+     * (B = Blue, K = Black)
+     * </code></pre>
+     * <p>Each bar should take up 1/8 of the sensor pixel array width.
+     * When this is not possible, the bar size should be rounded
+     * down to the nearest integer and the pattern can repeat
+     * on the right side.</p>
+     * <p>Each bar's height must always take up the full sensor
+     * pixel array height.</p>
+     * <p>Each pixel in this test pattern must be set to either
+     * 0% intensity or 100% intensity.</p>
+     */
+    ACAMERA_SENSOR_TEST_PATTERN_MODE_COLOR_BARS                      = 2,
+
+    /**
+     * <p>The test pattern is similar to COLOR_BARS, except that
+     * each bar should start at its specified color at the top,
+     * and fade to gray at the bottom.</p>
+     * <p>Furthermore each bar is further subdivided into a left and
+     * right half. The left half should have a smooth gradient,
+     * and the right half should have a quantized gradient.</p>
+     * <p>In particular, the right half's should consist of blocks of the
+     * same color for 1/16th active sensor pixel array width.</p>
+     * <p>The least significant bits in the quantized gradient should
+     * be copied from the most significant bits of the smooth gradient.</p>
+     * <p>The height of each bar should always be a multiple of 128.
+     * When this is not the case, the pattern should repeat at the bottom
+     * of the image.</p>
+     */
+    ACAMERA_SENSOR_TEST_PATTERN_MODE_COLOR_BARS_FADE_TO_GRAY         = 3,
+
+    /**
+     * <p>All pixel data is replaced by a pseudo-random sequence
+     * generated from a PN9 512-bit sequence (typically implemented
+     * in hardware with a linear feedback shift register).</p>
+     * <p>The generator should be reset at the beginning of each frame,
+     * and thus each subsequent raw frame with this test pattern should
+     * be exactly the same as the last.</p>
+     */
+    ACAMERA_SENSOR_TEST_PATTERN_MODE_PN9                             = 4,
+
+    /**
+     * <p>The first custom test pattern. All custom patterns that are
+     * available only on this camera device are at least this numeric
+     * value.</p>
+     * <p>All of the custom test patterns will be static
+     * (that is the raw image must not vary from frame to frame).</p>
+     */
+    ACAMERA_SENSOR_TEST_PATTERN_MODE_CUSTOM1                         = 256,
+
+} acamera_metadata_enum_android_sensor_test_pattern_mode_t;
+
+
+// ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT
+typedef enum acamera_metadata_enum_acamera_sensor_info_color_filter_arrangement {
+    ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGGB                = 0,
+
+    ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GRBG                = 1,
+
+    ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_GBRG                = 2,
+
+    ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_BGGR                = 3,
+
+    /**
+     * <p>Sensor is not Bayer; output has 3 16-bit
+     * values for each pixel, instead of just 1 16-bit value
+     * per pixel.</p>
+     */
+    ACAMERA_SENSOR_INFO_COLOR_FILTER_ARRANGEMENT_RGB                 = 4,
+
+} acamera_metadata_enum_android_sensor_info_color_filter_arrangement_t;
+
+// ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE
+typedef enum acamera_metadata_enum_acamera_sensor_info_timestamp_source {
+    /**
+     * <p>Timestamps from ACAMERA_SENSOR_TIMESTAMP are in nanoseconds and monotonic,
+     * but can not be compared to timestamps from other subsystems
+     * (e.g. accelerometer, gyro etc.), or other instances of the same or different
+     * camera devices in the same system. Timestamps between streams and results for
+     * a single camera instance are comparable, and the timestamps for all buffers
+     * and the result metadata generated by a single capture are identical.</p>
+     *
+     * @see ACAMERA_SENSOR_TIMESTAMP
+     */
+    ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE_UNKNOWN                     = 0,
+
+    /**
+     * <p>Timestamps from ACAMERA_SENSOR_TIMESTAMP are in the same timebase as
+     * <a href="https://developer.android.com/reference/android/os/SystemClock.html#elapsedRealtimeNanos">elapsedRealtimeNanos</a>
+     * (or CLOCK_BOOTTIME), and they can be compared to other timestamps using that base.</p>
+     *
+     * @see ACAMERA_SENSOR_TIMESTAMP
+     */
+    ACAMERA_SENSOR_INFO_TIMESTAMP_SOURCE_REALTIME                    = 1,
+
+} acamera_metadata_enum_android_sensor_info_timestamp_source_t;
+
+// ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED
+typedef enum acamera_metadata_enum_acamera_sensor_info_lens_shading_applied {
+    ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED_FALSE                   = 0,
+
+    ACAMERA_SENSOR_INFO_LENS_SHADING_APPLIED_TRUE                    = 1,
+
+} acamera_metadata_enum_android_sensor_info_lens_shading_applied_t;
+
+
+// ACAMERA_SHADING_MODE
+typedef enum acamera_metadata_enum_acamera_shading_mode {
+    /**
+     * <p>No lens shading correction is applied.</p>
+     */
+    ACAMERA_SHADING_MODE_OFF                                         = 0,
+
+    /**
+     * <p>Apply lens shading corrections, without slowing
+     * frame rate relative to sensor raw output</p>
+     */
+    ACAMERA_SHADING_MODE_FAST                                        = 1,
+
+    /**
+     * <p>Apply high-quality lens shading correction, at the
+     * cost of possibly reduced frame rate.</p>
+     */
+    ACAMERA_SHADING_MODE_HIGH_QUALITY                                = 2,
+
+} acamera_metadata_enum_android_shading_mode_t;
+
+
+// ACAMERA_STATISTICS_FACE_DETECT_MODE
+typedef enum acamera_metadata_enum_acamera_statistics_face_detect_mode {
+    /**
+     * <p>Do not include face detection statistics in capture
+     * results.</p>
+     */
+    ACAMERA_STATISTICS_FACE_DETECT_MODE_OFF                          = 0,
+
+    /**
+     * <p>Return face rectangle and confidence values only.</p>
+     */
+    ACAMERA_STATISTICS_FACE_DETECT_MODE_SIMPLE                       = 1,
+
+    /**
+     * <p>Return all face
+     * metadata.</p>
+     * <p>In this mode, face rectangles, scores, landmarks, and face IDs are all valid.</p>
+     */
+    ACAMERA_STATISTICS_FACE_DETECT_MODE_FULL                         = 2,
+
+} acamera_metadata_enum_android_statistics_face_detect_mode_t;
+
+// ACAMERA_STATISTICS_HOT_PIXEL_MAP_MODE
+typedef enum acamera_metadata_enum_acamera_statistics_hot_pixel_map_mode {
+    /**
+     * <p>Hot pixel map production is disabled.</p>
+     */
+    ACAMERA_STATISTICS_HOT_PIXEL_MAP_MODE_OFF                        = 0,
+
+    /**
+     * <p>Hot pixel map production is enabled.</p>
+     */
+    ACAMERA_STATISTICS_HOT_PIXEL_MAP_MODE_ON                         = 1,
+
+} acamera_metadata_enum_android_statistics_hot_pixel_map_mode_t;
+
+// ACAMERA_STATISTICS_SCENE_FLICKER
+typedef enum acamera_metadata_enum_acamera_statistics_scene_flicker {
+    /**
+     * <p>The camera device does not detect any flickering illumination
+     * in the current scene.</p>
+     */
+    ACAMERA_STATISTICS_SCENE_FLICKER_NONE                            = 0,
+
+    /**
+     * <p>The camera device detects illumination flickering at 50Hz
+     * in the current scene.</p>
+     */
+    ACAMERA_STATISTICS_SCENE_FLICKER_50HZ                            = 1,
+
+    /**
+     * <p>The camera device detects illumination flickering at 60Hz
+     * in the current scene.</p>
+     */
+    ACAMERA_STATISTICS_SCENE_FLICKER_60HZ                            = 2,
+
+} acamera_metadata_enum_android_statistics_scene_flicker_t;
+
+// ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE
+typedef enum acamera_metadata_enum_acamera_statistics_lens_shading_map_mode {
+    /**
+     * <p>Do not include a lens shading map in the capture result.</p>
+     */
+    ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE_OFF                     = 0,
+
+    /**
+     * <p>Include a lens shading map in the capture result.</p>
+     */
+    ACAMERA_STATISTICS_LENS_SHADING_MAP_MODE_ON                      = 1,
+
+} acamera_metadata_enum_android_statistics_lens_shading_map_mode_t;
+
+
+
+// ACAMERA_TONEMAP_MODE
+typedef enum acamera_metadata_enum_acamera_tonemap_mode {
+    /**
+     * <p>Use the tone mapping curve specified in
+     * the ACAMERA_TONEMAPCURVE_* entries.</p>
+     * <p>All color enhancement and tonemapping must be disabled, except
+     * for applying the tonemapping curve specified by
+     * android.tonemap.curve.</p>
+     * <p>Must not slow down frame rate relative to raw
+     * sensor output.</p>
+     */
+    ACAMERA_TONEMAP_MODE_CONTRAST_CURVE                              = 0,
+
+    /**
+     * <p>Advanced gamma mapping and color enhancement may be applied, without
+     * reducing frame rate compared to raw sensor output.</p>
+     */
+    ACAMERA_TONEMAP_MODE_FAST                                        = 1,
+
+    /**
+     * <p>High-quality gamma mapping and color enhancement will be applied, at
+     * the cost of possibly reduced frame rate compared to raw sensor output.</p>
+     */
+    ACAMERA_TONEMAP_MODE_HIGH_QUALITY                                = 2,
+
+    /**
+     * <p>Use the gamma value specified in ACAMERA_TONEMAP_GAMMA to peform
+     * tonemapping.</p>
+     * <p>All color enhancement and tonemapping must be disabled, except
+     * for applying the tonemapping curve specified by ACAMERA_TONEMAP_GAMMA.</p>
+     * <p>Must not slow down frame rate relative to raw sensor output.</p>
+     *
+     * @see ACAMERA_TONEMAP_GAMMA
+     */
+    ACAMERA_TONEMAP_MODE_GAMMA_VALUE                                 = 3,
+
+    /**
+     * <p>Use the preset tonemapping curve specified in
+     * ACAMERA_TONEMAP_PRESET_CURVE to peform tonemapping.</p>
+     * <p>All color enhancement and tonemapping must be disabled, except
+     * for applying the tonemapping curve specified by
+     * ACAMERA_TONEMAP_PRESET_CURVE.</p>
+     * <p>Must not slow down frame rate relative to raw sensor output.</p>
+     *
+     * @see ACAMERA_TONEMAP_PRESET_CURVE
+     */
+    ACAMERA_TONEMAP_MODE_PRESET_CURVE                                = 4,
+
+} acamera_metadata_enum_android_tonemap_mode_t;
+
+// ACAMERA_TONEMAP_PRESET_CURVE
+typedef enum acamera_metadata_enum_acamera_tonemap_preset_curve {
+    /**
+     * <p>Tonemapping curve is defined by sRGB</p>
+     */
+    ACAMERA_TONEMAP_PRESET_CURVE_SRGB                                = 0,
+
+    /**
+     * <p>Tonemapping curve is defined by ITU-R BT.709</p>
+     */
+    ACAMERA_TONEMAP_PRESET_CURVE_REC709                              = 1,
+
+} acamera_metadata_enum_android_tonemap_preset_curve_t;
+
+
+
+// ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL
+typedef enum acamera_metadata_enum_acamera_info_supported_hardware_level {
+    /**
+     * <p>This camera device does not have enough capabilities to qualify as a <code>FULL</code> device or
+     * better.</p>
+     * <p>Only the stream configurations listed in the <code>LEGACY</code> and <code>LIMITED</code> tables in the
+     * {@link ACameraDevice_createCaptureSession} documentation are guaranteed to be supported.</p>
+     * <p>All <code>LIMITED</code> devices support the <code>BACKWARDS_COMPATIBLE</code> capability, indicating basic
+     * support for color image capture. The only exception is that the device may
+     * alternatively support only the <code>DEPTH_OUTPUT</code> capability, if it can only output depth
+     * measurements and not color images.</p>
+     * <p><code>LIMITED</code> devices and above require the use of ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
+     * to lock exposure metering (and calculate flash power, for cameras with flash) before
+     * capturing a high-quality still image.</p>
+     * <p>A <code>LIMITED</code> device that only lists the <code>BACKWARDS_COMPATIBLE</code> capability is only
+     * required to support full-automatic operation and post-processing (<code>OFF</code> is not
+     * supported for ACAMERA_CONTROL_AE_MODE, ACAMERA_CONTROL_AF_MODE, or
+     * ACAMERA_CONTROL_AWB_MODE)</p>
+     * <p>Additional capabilities may optionally be supported by a <code>LIMITED</code>-level device, and
+     * can be checked for in ACAMERA_REQUEST_AVAILABLE_CAPABILITIES.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_MODE
+     * @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
+     * @see ACAMERA_CONTROL_AF_MODE
+     * @see ACAMERA_CONTROL_AWB_MODE
+     * @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+     */
+    ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_LIMITED                    = 0,
+
+    /**
+     * <p>This camera device is capable of supporting advanced imaging applications.</p>
+     * <p>The stream configurations listed in the <code>FULL</code>, <code>LEGACY</code> and <code>LIMITED</code> tables in the
+     * {@link ACameraDevice_createCaptureSession} documentation are guaranteed to be supported.</p>
+     * <p>A <code>FULL</code> device will support below capabilities:</p>
+     * <ul>
+     * <li><code>BURST_CAPTURE</code> capability (ACAMERA_REQUEST_AVAILABLE_CAPABILITIES contains
+     *   <code>BURST_CAPTURE</code>)</li>
+     * <li>Per frame control (ACAMERA_SYNC_MAX_LATENCY <code>==</code> PER_FRAME_CONTROL)</li>
+     * <li>Manual sensor control (ACAMERA_REQUEST_AVAILABLE_CAPABILITIES contains <code>MANUAL_SENSOR</code>)</li>
+     * <li>Manual post-processing control (ACAMERA_REQUEST_AVAILABLE_CAPABILITIES contains
+     *   <code>MANUAL_POST_PROCESSING</code>)</li>
+     * <li>The required exposure time range defined in ACAMERA_SENSOR_INFO_EXPOSURE_TIME_RANGE</li>
+     * <li>The required maxFrameDuration defined in ACAMERA_SENSOR_INFO_MAX_FRAME_DURATION</li>
+     * </ul>
+     * <p>Note:
+     * Pre-API level 23, FULL devices also supported arbitrary cropping region
+     * (ACAMERA_SCALER_CROPPING_TYPE <code>== FREEFORM</code>); this requirement was relaxed in API level
+     * 23, and <code>FULL</code> devices may only support <code>CENTERED</code> cropping.</p>
+     *
+     * @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+     * @see ACAMERA_SCALER_CROPPING_TYPE
+     * @see ACAMERA_SENSOR_INFO_EXPOSURE_TIME_RANGE
+     * @see ACAMERA_SENSOR_INFO_MAX_FRAME_DURATION
+     * @see ACAMERA_SYNC_MAX_LATENCY
+     */
+    ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_FULL                       = 1,
+
+    /**
+     * <p>This camera device is running in backward compatibility mode.</p>
+     * <p>Only the stream configurations listed in the <code>LEGACY</code> table in the {@link
+     * ACameraDevice_createCaptureSession} documentation are supported.</p>
+     * <p>A <code>LEGACY</code> device does not support per-frame control, manual sensor control, manual
+     * post-processing, arbitrary cropping regions, and has relaxed performance constraints.
+     * No additional capabilities beyond <code>BACKWARD_COMPATIBLE</code> will ever be listed by a
+     * <code>LEGACY</code> device in ACAMERA_REQUEST_AVAILABLE_CAPABILITIES.</p>
+     * <p>In addition, the ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER is not functional on <code>LEGACY</code>
+     * devices. Instead, every request that includes a JPEG-format output target is treated
+     * as triggering a still capture, internally executing a precapture trigger.  This may
+     * fire the flash for flash power metering during precapture, and then fire the flash
+     * for the final capture, if a flash is available on the device and the AE mode is set to
+     * enable the flash.</p>
+     *
+     * @see ACAMERA_CONTROL_AE_PRECAPTURE_TRIGGER
+     * @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+     */
+    ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_LEGACY                     = 2,
+
+    /**
+     * <p>This camera device is capable of YUV reprocessing and RAW data capture, in addition to
+     * FULL-level capabilities.</p>
+     * <p>The stream configurations listed in the <code>LEVEL_3</code>, <code>RAW</code>, <code>FULL</code>, <code>LEGACY</code> and
+     * <code>LIMITED</code> tables in the {@link
+     * ACameraDevice_createCaptureSession}
+     * documentation are guaranteed to be supported.</p>
+     * <p>The following additional capabilities are guaranteed to be supported:</p>
+     * <ul>
+     * <li><code>YUV_REPROCESSING</code> capability (ACAMERA_REQUEST_AVAILABLE_CAPABILITIES contains
+     *   <code>YUV_REPROCESSING</code>)</li>
+     * <li><code>RAW</code> capability (ACAMERA_REQUEST_AVAILABLE_CAPABILITIES contains
+     *   <code>RAW</code>)</li>
+     * </ul>
+     *
+     * @see ACAMERA_REQUEST_AVAILABLE_CAPABILITIES
+     */
+    ACAMERA_INFO_SUPPORTED_HARDWARE_LEVEL_3                          = 3,
+
+} acamera_metadata_enum_android_info_supported_hardware_level_t;
+
+
+// ACAMERA_BLACK_LEVEL_LOCK
+typedef enum acamera_metadata_enum_acamera_black_level_lock {
+    ACAMERA_BLACK_LEVEL_LOCK_OFF                                     = 0,
+
+    ACAMERA_BLACK_LEVEL_LOCK_ON                                      = 1,
+
+} acamera_metadata_enum_android_black_level_lock_t;
+
+
+// ACAMERA_SYNC_FRAME_NUMBER
+typedef enum acamera_metadata_enum_acamera_sync_frame_number {
+    /**
+     * <p>The current result is not yet fully synchronized to any request.</p>
+     * <p>Synchronization is in progress, and reading metadata from this
+     * result may include a mix of data that have taken effect since the
+     * last synchronization time.</p>
+     * <p>In some future result, within ACAMERA_SYNC_MAX_LATENCY frames,
+     * this value will update to the actual frame number frame number
+     * the result is guaranteed to be synchronized to (as long as the
+     * request settings remain constant).</p>
+     *
+     * @see ACAMERA_SYNC_MAX_LATENCY
+     */
+    ACAMERA_SYNC_FRAME_NUMBER_CONVERGING                             = -1,
+
+    /**
+     * <p>The current result's synchronization status is unknown.</p>
+     * <p>The result may have already converged, or it may be in
+     * progress.  Reading from this result may include some mix
+     * of settings from past requests.</p>
+     * <p>After a settings change, the new settings will eventually all
+     * take effect for the output buffers and results. However, this
+     * value will not change when that happens. Altering settings
+     * rapidly may provide outcomes using mixes of settings from recent
+     * requests.</p>
+     * <p>This value is intended primarily for backwards compatibility with
+     * the older camera implementations (for android.hardware.Camera).</p>
+     */
+    ACAMERA_SYNC_FRAME_NUMBER_UNKNOWN                                = -2,
+
+} acamera_metadata_enum_android_sync_frame_number_t;
+
+// ACAMERA_SYNC_MAX_LATENCY
+typedef enum acamera_metadata_enum_acamera_sync_max_latency {
+    /**
+     * <p>Every frame has the requests immediately applied.</p>
+     * <p>Changing controls over multiple requests one after another will
+     * produce results that have those controls applied atomically
+     * each frame.</p>
+     * <p>All FULL capability devices will have this as their maxLatency.</p>
+     */
+    ACAMERA_SYNC_MAX_LATENCY_PER_FRAME_CONTROL                       = 0,
+
+    /**
+     * <p>Each new frame has some subset (potentially the entire set)
+     * of the past requests applied to the camera settings.</p>
+     * <p>By submitting a series of identical requests, the camera device
+     * will eventually have the camera settings applied, but it is
+     * unknown when that exact point will be.</p>
+     * <p>All LEGACY capability devices will have this as their maxLatency.</p>
+     */
+    ACAMERA_SYNC_MAX_LATENCY_UNKNOWN                                 = -1,
+
+} acamera_metadata_enum_android_sync_max_latency_t;
+
+
+
+// ACAMERA_DEPTH_AVAILABLE_DEPTH_STREAM_CONFIGURATIONS
+typedef enum acamera_metadata_enum_acamera_depth_available_depth_stream_configurations {
+    ACAMERA_DEPTH_AVAILABLE_DEPTH_STREAM_CONFIGURATIONS_OUTPUT       = 0,
+
+    ACAMERA_DEPTH_AVAILABLE_DEPTH_STREAM_CONFIGURATIONS_INPUT        = 1,
+
+} acamera_metadata_enum_android_depth_available_depth_stream_configurations_t;
+
+// ACAMERA_DEPTH_DEPTH_IS_EXCLUSIVE
+typedef enum acamera_metadata_enum_acamera_depth_depth_is_exclusive {
+    ACAMERA_DEPTH_DEPTH_IS_EXCLUSIVE_FALSE                           = 0,
+
+    ACAMERA_DEPTH_DEPTH_IS_EXCLUSIVE_TRUE                            = 1,
+
+} acamera_metadata_enum_android_depth_depth_is_exclusive_t;
+
+
+#endif /* __ANDROID_API__ >= 24 */
+
+__END_DECLS
+
+#endif /* _NDK_CAMERA_METADATA_TAGS_H */
+
+/** @} */
diff --git a/camera/include/camera/ndk/NdkCaptureRequest.h b/camera/include/camera/ndk/NdkCaptureRequest.h
new file mode 100644
index 0000000..c62ba2c
--- /dev/null
+++ b/camera/include/camera/ndk/NdkCaptureRequest.h
@@ -0,0 +1,312 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * @addtogroup Camera
+ * @{
+ */
+
+/**
+ * @file NdkCaptureRequest.h
+ */
+
+/*
+ * This file defines an NDK API.
+ * Do not remove methods.
+ * Do not change method signatures.
+ * Do not change the value of constants.
+ * Do not change the size of any of the classes defined in here.
+ * Do not reference types that are not part of the NDK.
+ * Do not #include files that aren't part of the NDK.
+ */
+
+#include <sys/cdefs.h>
+
+#include <android/native_window.h>
+#include "NdkCameraError.h"
+#include "NdkCameraMetadata.h"
+
+#ifndef _NDK_CAPTURE_REQUEST_H
+#define _NDK_CAPTURE_REQUEST_H
+
+__BEGIN_DECLS
+
+#if __ANDROID_API__ >= 24
+
+// Container for output targets
+typedef struct ACameraOutputTargets ACameraOutputTargets;
+
+// Container for a single output target
+typedef struct ACameraOutputTarget ACameraOutputTarget;
+
+/**
+ * ACaptureRequest is an opaque type that contains settings and output targets needed to capture
+ * a single image from camera device.
+ *
+ * <p>ACaptureRequest contains the configuration for the capture hardware (sensor, lens, flash),
+ * the processing pipeline, the control algorithms, and the output buffers. Also
+ * contains the list of target {@link ANativeWindow}s to send image data to for this
+ * capture.</p>
+ *
+ * <p>ACaptureRequest is created by {@link ACameraDevice_createCaptureRequest}.
+ *
+ * <p>ACaptureRequest is given to {@link ACameraCaptureSession_capture} or
+ * {@link ACameraCaptureSession_setRepeatingRequest} to capture images from a camera.</p>
+ *
+ * <p>Each request can specify a different subset of target {@link ANativeWindow}s for the
+ * camera to send the captured data to. All the {@link ANativeWindow}s used in a request must
+ * be part of the {@link ANativeWindow} list given to the last call to
+ * {@link ACameraDevice_createCaptureSession}, when the request is submitted to the
+ * session.</p>
+ *
+ * <p>For example, a request meant for repeating preview might only include the
+ * {@link ANativeWindow} for the preview SurfaceView or SurfaceTexture, while a
+ * high-resolution still capture would also include a {@link ANativeWindow} from a
+ * {@link AImageReader} configured for high-resolution JPEG images.</p>
+ *
+ * @see ACameraDevice_createCaptureRequest
+ * @see ACameraCaptureSession_capture
+ * @see ACameraCaptureSession_setRepeatingRequest
+ */
+typedef struct ACaptureRequest ACaptureRequest;
+
+/**
+ * Create a ACameraOutputTarget object.
+ *
+ * <p>The ACameraOutputTarget is used in {@link ACaptureRequest_addTarget} method to add an output
+ * {@link ANativeWindow} to ACaptureRequest. Use {@link ACameraOutputTarget_free} to free the object
+ * and its memory after application no longer needs the {@link ACameraOutputTarget}.</p>
+ *
+ * @param window the {@link ANativeWindow} to be associated with the {@link ACameraOutputTarget}
+ * @param output the output {@link ACameraOutputTarget} will be stored here if the
+ *                  method call succeeds.
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds. The created ACameraOutputTarget will
+ *                                be filled in the output argument.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if window or output is NULL.</li></ul>
+ *
+ * @see ACaptureRequest_addTarget
+ */
+camera_status_t ACameraOutputTarget_create(ANativeWindow* window, ACameraOutputTarget** output);
+
+/**
+ * Free a ACameraOutputTarget object.
+ *
+ * @param output the {@link ACameraOutputTarget} to be freed.
+ *
+ * @see ACameraOutputTarget_create
+ */
+void ACameraOutputTarget_free(ACameraOutputTarget* output);
+
+/**
+ * Add an {@link ACameraOutputTarget} object to {@link ACaptureRequest}.
+ *
+ * @param request the {@link ACaptureRequest} of interest.
+ * @param output the output {@link ACameraOutputTarget} to be added to capture request.
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request or output is NULL.</li></ul>
+ */
+camera_status_t ACaptureRequest_addTarget(ACaptureRequest* request,
+        const ACameraOutputTarget* output);
+
+/**
+ * Remove an {@link ACameraOutputTarget} object from {@link ACaptureRequest}.
+ *
+ * <p>This method has no effect if the ACameraOutputTarget does not exist in ACaptureRequest.</p>
+ *
+ * @param request the {@link ACaptureRequest} of interest.
+ * @param output the output {@link ACameraOutputTarget} to be removed from capture request.
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request or output is NULL.</li></ul>
+ */
+camera_status_t ACaptureRequest_removeTarget(ACaptureRequest* request,
+        const ACameraOutputTarget* output);
+
+/**
+ * Get a metadata entry from input {@link ACaptureRequest}.
+ *
+ * <p>The memory of the data field in returned entry is managed by camera framework. Do not
+ * attempt to free it.</p>
+ *
+ * @param request the {@link ACaptureRequest} of interest.
+ * @param tag the tag value of the camera metadata entry to be get.
+ * @param entry the output {@link ACameraMetadata_const_entry} will be filled here if the method
+ *        call succeeeds.
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if metadata or entry is NULL.</li>
+ *         <li>{@link ACAMERA_ERROR_METADATA_NOT_FOUND} if the capture request does not contain an
+ *             entry of input tag value.</li></ul>
+ */
+camera_status_t ACaptureRequest_getConstEntry(
+        const ACaptureRequest* request, uint32_t tag, ACameraMetadata_const_entry* entry);
+
+/*
+ * List all the entry tags in input {@link ACaptureRequest}.
+ *
+ * @param request the {@link ACaptureRequest} of interest.
+ * @param numEntries number of metadata entries in input {@link ACaptureRequest}
+ * @param tags the tag values of the metadata entries. Length of tags is returned in numEntries
+ *             argument. The memory is managed by ACaptureRequest itself and must NOT be free/delete
+ *             by application. Calling ACaptureRequest_setEntry_* methods will invalidate previous
+ *             output of ACaptureRequest_getAllTags. Do not access tags after calling
+ *             ACaptureRequest_setEntry_*. To get new list of tags after updating capture request,
+ *             application must call ACaptureRequest_getAllTags again. Do NOT access tags after
+ *             calling ACaptureRequest_free.
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request, numEntries or tags is NULL.</li>
+ *         <li>{@link ACAMERA_ERROR_UNKNOWN} if the method fails for some other reasons.</li></ul>
+ */
+camera_status_t ACaptureRequest_getAllTags(
+        const ACaptureRequest* request, /*out*/int32_t* numTags, /*out*/const uint32_t** tags);
+
+/**
+ * Set/change a camera capture control entry with unsigned 8 bits data type.
+ *
+ * <p>Set count to 0 and data to NULL to remove a tag from the capture request.</p>
+ *
+ * @param request the {@link ACaptureRequest} of interest.
+ * @param tag the tag value of the camera metadata entry to be set.
+ * @param count number of elements to be set in data argument
+ * @param data the entries to be set/change in the capture request.
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request is NULL, count is larger than
+ *             zero while data is NULL, the data type of the tag is not unsigned 8 bits, or
+ *             the tag is not controllable by application.</li></ul>
+ */
+camera_status_t ACaptureRequest_setEntry_u8(
+        ACaptureRequest* request, uint32_t tag, uint32_t count, const uint8_t* data);
+
+/**
+ * Set/change a camera capture control entry with signed 32 bits data type.
+ *
+ * <p>Set count to 0 and data to NULL to remove a tag from the capture request.</p>
+ *
+ * @param request the {@link ACaptureRequest} of interest.
+ * @param tag the tag value of the camera metadata entry to be set.
+ * @param count number of elements to be set in data argument
+ * @param data the entries to be set/change in the capture request.
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request is NULL, count is larger than
+ *             zero while data is NULL, the data type of the tag is not signed 32 bits, or
+ *             the tag is not controllable by application.</li></ul>
+ */
+camera_status_t ACaptureRequest_setEntry_i32(
+        ACaptureRequest* request, uint32_t tag, uint32_t count, const int32_t* data);
+
+/**
+ * Set/change a camera capture control entry with float data type.
+ *
+ * <p>Set count to 0 and data to NULL to remove a tag from the capture request.</p>
+ *
+ * @param request the {@link ACaptureRequest} of interest.
+ * @param tag the tag value of the camera metadata entry to be set.
+ * @param count number of elements to be set in data argument
+ * @param data the entries to be set/change in the capture request.
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request is NULL, count is larger than
+ *             zero while data is NULL, the data type of the tag is not float, or
+ *             the tag is not controllable by application.</li></ul>
+ */
+camera_status_t ACaptureRequest_setEntry_float(
+        ACaptureRequest* request, uint32_t tag, uint32_t count, const float* data);
+
+/**
+ * Set/change a camera capture control entry with signed 64 bits data type.
+ *
+ * <p>Set count to 0 and data to NULL to remove a tag from the capture request.</p>
+ *
+ * @param request the {@link ACaptureRequest} of interest.
+ * @param tag the tag value of the camera metadata entry to be set.
+ * @param count number of elements to be set in data argument
+ * @param data the entries to be set/change in the capture request.
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request is NULL, count is larger than
+ *             zero while data is NULL, the data type of the tag is not signed 64 bits, or
+ *             the tag is not controllable by application.</li></ul>
+ */
+camera_status_t ACaptureRequest_setEntry_i64(
+        ACaptureRequest* request, uint32_t tag, uint32_t count, const int64_t* data);
+
+/**
+ * Set/change a camera capture control entry with double data type.
+ *
+ * <p>Set count to 0 and data to NULL to remove a tag from the capture request.</p>
+ *
+ * @param request the {@link ACaptureRequest} of interest.
+ * @param tag the tag value of the camera metadata entry to be set.
+ * @param count number of elements to be set in data argument
+ * @param data the entries to be set/change in the capture request.
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request is NULL, count is larger than
+ *             zero while data is NULL, the data type of the tag is not double, or
+ *             the tag is not controllable by application.</li></ul>
+ */
+camera_status_t ACaptureRequest_setEntry_double(
+        ACaptureRequest* request, uint32_t tag, uint32_t count, const double* data);
+
+/**
+ * Set/change a camera capture control entry with rational data type.
+ *
+ * <p>Set count to 0 and data to NULL to remove a tag from the capture request.</p>
+ *
+ * @param request the {@link ACaptureRequest} of interest.
+ * @param tag the tag value of the camera metadata entry to be set.
+ * @param count number of elements to be set in data argument
+ * @param data the entries to be set/change in the capture request.
+ *
+ * @return <ul>
+ *         <li>{@link ACAMERA_OK} if the method call succeeds.</li>
+ *         <li>{@link ACAMERA_ERROR_INVALID_PARAMETER} if request is NULL, count is larger than
+ *             zero while data is NULL, the data type of the tag is not rational, or
+ *             the tag is not controllable by application.</li></ul>
+ */
+camera_status_t ACaptureRequest_setEntry_rational(
+        ACaptureRequest* request, uint32_t tag, uint32_t count,
+        const ACameraMetadata_rational* data);
+
+/**
+ * Free a {@link ACaptureRequest} structure.
+ *
+ * @param request the {@link ACaptureRequest} to be freed.
+ */
+void ACaptureRequest_free(ACaptureRequest* request);
+
+#endif /* __ANDROID_API__ >= 24 */
+
+__END_DECLS
+
+#endif /* _NDK_CAPTURE_REQUEST_H */
+
+/** @} */
diff --git a/camera/ndk/Android.bp b/camera/ndk/Android.bp
new file mode 100644
index 0000000..ade0d72
--- /dev/null
+++ b/camera/ndk/Android.bp
@@ -0,0 +1,24 @@
+// Copyright (C) 2016 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Headers module is in frameworks/av/Android.bp because modules are not allowed
+// to refer to headers in parent directories and the headers live in
+// frameworks/av/include.
+
+ndk_library {
+    name: "libcamera2ndk",
+    symbol_file: "libcamera2ndk.map.txt",
+    first_version: "24",
+    unversioned_until: "current",
+}
diff --git a/camera/ndk/Android.mk b/camera/ndk/Android.mk
index 40dbeef..591dfc2 100644
--- a/camera/ndk/Android.mk
+++ b/camera/ndk/Android.mk
@@ -51,8 +51,6 @@
     libcutils \
     libcamera_metadata
 
-LOCAL_CLANG := true
-
 include $(BUILD_SHARED_LIBRARY)
 
 endif
diff --git a/camera/ndk/NdkCaptureRequest.cpp