| /* |
| ** |
| ** Copyright 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. |
| */ |
| |
| //#define LOG_NDEBUG 0 |
| #define LOG_TAG "ICamera" |
| #include <utils/Log.h> |
| #include <stdint.h> |
| #include <sys/types.h> |
| #include <binder/Parcel.h> |
| #include <camera/ICamera.h> |
| #include <gui/IGraphicBufferProducer.h> |
| #include <gui/Surface.h> |
| |
| namespace android { |
| |
| enum { |
| DISCONNECT = IBinder::FIRST_CALL_TRANSACTION, |
| SET_PREVIEW_TARGET, |
| SET_PREVIEW_CALLBACK_FLAG, |
| SET_PREVIEW_CALLBACK_TARGET, |
| START_PREVIEW, |
| STOP_PREVIEW, |
| AUTO_FOCUS, |
| CANCEL_AUTO_FOCUS, |
| TAKE_PICTURE, |
| SET_PARAMETERS, |
| GET_PARAMETERS, |
| SEND_COMMAND, |
| CONNECT, |
| LOCK, |
| UNLOCK, |
| PREVIEW_ENABLED, |
| START_RECORDING, |
| STOP_RECORDING, |
| RECORDING_ENABLED, |
| RELEASE_RECORDING_FRAME, |
| STORE_META_DATA_IN_BUFFERS, |
| }; |
| |
| class BpCamera: public BpInterface<ICamera> |
| { |
| public: |
| BpCamera(const sp<IBinder>& impl) |
| : BpInterface<ICamera>(impl) |
| { |
| } |
| |
| // disconnect from camera service |
| void disconnect() |
| { |
| ALOGV("disconnect"); |
| Parcel data, reply; |
| data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); |
| remote()->transact(DISCONNECT, data, &reply); |
| reply.readExceptionCode(); |
| } |
| |
| // pass the buffered IGraphicBufferProducer to the camera service |
| status_t setPreviewTarget(const sp<IGraphicBufferProducer>& bufferProducer) |
| { |
| ALOGV("setPreviewTarget"); |
| Parcel data, reply; |
| data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); |
| sp<IBinder> b(bufferProducer->asBinder()); |
| data.writeStrongBinder(b); |
| remote()->transact(SET_PREVIEW_TARGET, data, &reply); |
| return reply.readInt32(); |
| } |
| |
| // set the preview callback flag to affect how the received frames from |
| // preview are handled. See Camera.h for details. |
| void setPreviewCallbackFlag(int flag) |
| { |
| ALOGV("setPreviewCallbackFlag(%d)", flag); |
| Parcel data, reply; |
| data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); |
| data.writeInt32(flag); |
| remote()->transact(SET_PREVIEW_CALLBACK_FLAG, data, &reply); |
| } |
| |
| status_t setPreviewCallbackTarget( |
| const sp<IGraphicBufferProducer>& callbackProducer) |
| { |
| ALOGV("setPreviewCallbackTarget"); |
| Parcel data, reply; |
| data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); |
| sp<IBinder> b(callbackProducer->asBinder()); |
| data.writeStrongBinder(b); |
| remote()->transact(SET_PREVIEW_CALLBACK_TARGET, data, &reply); |
| return reply.readInt32(); |
| } |
| |
| // start preview mode, must call setPreviewTarget first |
| status_t startPreview() |
| { |
| ALOGV("startPreview"); |
| Parcel data, reply; |
| data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); |
| remote()->transact(START_PREVIEW, data, &reply); |
| return reply.readInt32(); |
| } |
| |
| // start recording mode, must call setPreviewTarget first |
| status_t startRecording() |
| { |
| ALOGV("startRecording"); |
| Parcel data, reply; |
| data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); |
| remote()->transact(START_RECORDING, data, &reply); |
| return reply.readInt32(); |
| } |
| |
| // stop preview mode |
| void stopPreview() |
| { |
| ALOGV("stopPreview"); |
| Parcel data, reply; |
| data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); |
| remote()->transact(STOP_PREVIEW, data, &reply); |
| } |
| |
| // stop recording mode |
| void stopRecording() |
| { |
| ALOGV("stopRecording"); |
| Parcel data, reply; |
| data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); |
| remote()->transact(STOP_RECORDING, data, &reply); |
| } |
| |
| void releaseRecordingFrame(const sp<IMemory>& mem) |
| { |
| ALOGV("releaseRecordingFrame"); |
| Parcel data, reply; |
| data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); |
| data.writeStrongBinder(mem->asBinder()); |
| remote()->transact(RELEASE_RECORDING_FRAME, data, &reply); |
| } |
| |
| status_t storeMetaDataInBuffers(bool enabled) |
| { |
| ALOGV("storeMetaDataInBuffers: %s", enabled? "true": "false"); |
| Parcel data, reply; |
| data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); |
| data.writeInt32(enabled); |
| remote()->transact(STORE_META_DATA_IN_BUFFERS, data, &reply); |
| return reply.readInt32(); |
| } |
| |
| // check preview state |
| bool previewEnabled() |
| { |
| ALOGV("previewEnabled"); |
| Parcel data, reply; |
| data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); |
| remote()->transact(PREVIEW_ENABLED, data, &reply); |
| return reply.readInt32(); |
| } |
| |
| // check recording state |
| bool recordingEnabled() |
| { |
| ALOGV("recordingEnabled"); |
| Parcel data, reply; |
| data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); |
| remote()->transact(RECORDING_ENABLED, data, &reply); |
| return reply.readInt32(); |
| } |
| |
| // auto focus |
| status_t autoFocus() |
| { |
| ALOGV("autoFocus"); |
| Parcel data, reply; |
| data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); |
| remote()->transact(AUTO_FOCUS, data, &reply); |
| status_t ret = reply.readInt32(); |
| return ret; |
| } |
| |
| // cancel focus |
| status_t cancelAutoFocus() |
| { |
| ALOGV("cancelAutoFocus"); |
| Parcel data, reply; |
| data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); |
| remote()->transact(CANCEL_AUTO_FOCUS, data, &reply); |
| status_t ret = reply.readInt32(); |
| return ret; |
| } |
| |
| // take a picture - returns an IMemory (ref-counted mmap) |
| status_t takePicture(int msgType) |
| { |
| ALOGV("takePicture: 0x%x", msgType); |
| Parcel data, reply; |
| data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); |
| data.writeInt32(msgType); |
| remote()->transact(TAKE_PICTURE, data, &reply); |
| status_t ret = reply.readInt32(); |
| return ret; |
| } |
| |
| // set preview/capture parameters - key/value pairs |
| status_t setParameters(const String8& params) |
| { |
| ALOGV("setParameters"); |
| Parcel data, reply; |
| data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); |
| data.writeString8(params); |
| remote()->transact(SET_PARAMETERS, data, &reply); |
| return reply.readInt32(); |
| } |
| |
| // get preview/capture parameters - key/value pairs |
| String8 getParameters() const |
| { |
| ALOGV("getParameters"); |
| Parcel data, reply; |
| data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); |
| remote()->transact(GET_PARAMETERS, data, &reply); |
| return reply.readString8(); |
| } |
| virtual status_t sendCommand(int32_t cmd, int32_t arg1, int32_t arg2) |
| { |
| ALOGV("sendCommand"); |
| Parcel data, reply; |
| data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); |
| data.writeInt32(cmd); |
| data.writeInt32(arg1); |
| data.writeInt32(arg2); |
| remote()->transact(SEND_COMMAND, data, &reply); |
| return reply.readInt32(); |
| } |
| virtual status_t connect(const sp<ICameraClient>& cameraClient) |
| { |
| Parcel data, reply; |
| data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); |
| data.writeStrongBinder(cameraClient->asBinder()); |
| remote()->transact(CONNECT, data, &reply); |
| return reply.readInt32(); |
| } |
| virtual status_t lock() |
| { |
| Parcel data, reply; |
| data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); |
| remote()->transact(LOCK, data, &reply); |
| return reply.readInt32(); |
| } |
| virtual status_t unlock() |
| { |
| Parcel data, reply; |
| data.writeInterfaceToken(ICamera::getInterfaceDescriptor()); |
| remote()->transact(UNLOCK, data, &reply); |
| return reply.readInt32(); |
| } |
| }; |
| |
| IMPLEMENT_META_INTERFACE(Camera, "android.hardware.ICamera"); |
| |
| // ---------------------------------------------------------------------- |
| |
| status_t BnCamera::onTransact( |
| uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) |
| { |
| switch(code) { |
| case DISCONNECT: { |
| ALOGV("DISCONNECT"); |
| CHECK_INTERFACE(ICamera, data, reply); |
| disconnect(); |
| reply->writeNoException(); |
| return NO_ERROR; |
| } break; |
| case SET_PREVIEW_TARGET: { |
| ALOGV("SET_PREVIEW_TARGET"); |
| CHECK_INTERFACE(ICamera, data, reply); |
| sp<IGraphicBufferProducer> st = |
| interface_cast<IGraphicBufferProducer>(data.readStrongBinder()); |
| reply->writeInt32(setPreviewTarget(st)); |
| return NO_ERROR; |
| } break; |
| case SET_PREVIEW_CALLBACK_FLAG: { |
| ALOGV("SET_PREVIEW_CALLBACK_TYPE"); |
| CHECK_INTERFACE(ICamera, data, reply); |
| int callback_flag = data.readInt32(); |
| setPreviewCallbackFlag(callback_flag); |
| return NO_ERROR; |
| } break; |
| case SET_PREVIEW_CALLBACK_TARGET: { |
| ALOGV("SET_PREVIEW_CALLBACK_TARGET"); |
| CHECK_INTERFACE(ICamera, data, reply); |
| sp<IGraphicBufferProducer> cp = |
| interface_cast<IGraphicBufferProducer>(data.readStrongBinder()); |
| reply->writeInt32(setPreviewCallbackTarget(cp)); |
| return NO_ERROR; |
| } |
| case START_PREVIEW: { |
| ALOGV("START_PREVIEW"); |
| CHECK_INTERFACE(ICamera, data, reply); |
| reply->writeInt32(startPreview()); |
| return NO_ERROR; |
| } break; |
| case START_RECORDING: { |
| ALOGV("START_RECORDING"); |
| CHECK_INTERFACE(ICamera, data, reply); |
| reply->writeInt32(startRecording()); |
| return NO_ERROR; |
| } break; |
| case STOP_PREVIEW: { |
| ALOGV("STOP_PREVIEW"); |
| CHECK_INTERFACE(ICamera, data, reply); |
| stopPreview(); |
| return NO_ERROR; |
| } break; |
| case STOP_RECORDING: { |
| ALOGV("STOP_RECORDING"); |
| CHECK_INTERFACE(ICamera, data, reply); |
| stopRecording(); |
| return NO_ERROR; |
| } break; |
| case RELEASE_RECORDING_FRAME: { |
| ALOGV("RELEASE_RECORDING_FRAME"); |
| CHECK_INTERFACE(ICamera, data, reply); |
| sp<IMemory> mem = interface_cast<IMemory>(data.readStrongBinder()); |
| releaseRecordingFrame(mem); |
| return NO_ERROR; |
| } break; |
| case STORE_META_DATA_IN_BUFFERS: { |
| ALOGV("STORE_META_DATA_IN_BUFFERS"); |
| CHECK_INTERFACE(ICamera, data, reply); |
| bool enabled = data.readInt32(); |
| reply->writeInt32(storeMetaDataInBuffers(enabled)); |
| return NO_ERROR; |
| } break; |
| case PREVIEW_ENABLED: { |
| ALOGV("PREVIEW_ENABLED"); |
| CHECK_INTERFACE(ICamera, data, reply); |
| reply->writeInt32(previewEnabled()); |
| return NO_ERROR; |
| } break; |
| case RECORDING_ENABLED: { |
| ALOGV("RECORDING_ENABLED"); |
| CHECK_INTERFACE(ICamera, data, reply); |
| reply->writeInt32(recordingEnabled()); |
| return NO_ERROR; |
| } break; |
| case AUTO_FOCUS: { |
| ALOGV("AUTO_FOCUS"); |
| CHECK_INTERFACE(ICamera, data, reply); |
| reply->writeInt32(autoFocus()); |
| return NO_ERROR; |
| } break; |
| case CANCEL_AUTO_FOCUS: { |
| ALOGV("CANCEL_AUTO_FOCUS"); |
| CHECK_INTERFACE(ICamera, data, reply); |
| reply->writeInt32(cancelAutoFocus()); |
| return NO_ERROR; |
| } break; |
| case TAKE_PICTURE: { |
| ALOGV("TAKE_PICTURE"); |
| CHECK_INTERFACE(ICamera, data, reply); |
| int msgType = data.readInt32(); |
| reply->writeInt32(takePicture(msgType)); |
| return NO_ERROR; |
| } break; |
| case SET_PARAMETERS: { |
| ALOGV("SET_PARAMETERS"); |
| CHECK_INTERFACE(ICamera, data, reply); |
| String8 params(data.readString8()); |
| reply->writeInt32(setParameters(params)); |
| return NO_ERROR; |
| } break; |
| case GET_PARAMETERS: { |
| ALOGV("GET_PARAMETERS"); |
| CHECK_INTERFACE(ICamera, data, reply); |
| reply->writeString8(getParameters()); |
| return NO_ERROR; |
| } break; |
| case SEND_COMMAND: { |
| ALOGV("SEND_COMMAND"); |
| CHECK_INTERFACE(ICamera, data, reply); |
| int command = data.readInt32(); |
| int arg1 = data.readInt32(); |
| int arg2 = data.readInt32(); |
| reply->writeInt32(sendCommand(command, arg1, arg2)); |
| return NO_ERROR; |
| } break; |
| case CONNECT: { |
| CHECK_INTERFACE(ICamera, data, reply); |
| sp<ICameraClient> cameraClient = interface_cast<ICameraClient>(data.readStrongBinder()); |
| reply->writeInt32(connect(cameraClient)); |
| return NO_ERROR; |
| } break; |
| case LOCK: { |
| CHECK_INTERFACE(ICamera, data, reply); |
| reply->writeInt32(lock()); |
| return NO_ERROR; |
| } break; |
| case UNLOCK: { |
| CHECK_INTERFACE(ICamera, data, reply); |
| reply->writeInt32(unlock()); |
| return NO_ERROR; |
| } break; |
| default: |
| return BBinder::onTransact(code, data, reply, flags); |
| } |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| }; // namespace android |