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* 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
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* See the License for the specific language governing permissions and
* limitations under the License.
#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
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,
static TCamConnectService fnConnectService;
class Camera :
public CameraBase<Camera>,
public ::android::hardware::BnCameraClient
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
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);
sp<Camera> mCamera;
explicit Camera(int cameraId);
Camera(const Camera&);
Camera& operator=(const Camera);
sp<ICameraRecordingProxyListener> mRecordingProxyListener;
friend class CameraBase;
}; // namespace android