197 lines
6.7 KiB
C++
197 lines
6.7 KiB
C++
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_HARDWARE_CAMERA_H
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#define ANDROID_HARDWARE_CAMERA_H
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#include <utils/Timers.h>
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#include <gui/ISurfaceTexture.h>
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#include <system/camera.h>
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#include <camera/ICameraClient.h>
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#include <camera/ICameraRecordingProxy.h>
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#include <camera/ICameraRecordingProxyListener.h>
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namespace android {
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struct CameraInfo {
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/**
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* The direction that the camera faces to. It should be CAMERA_FACING_BACK
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* or CAMERA_FACING_FRONT.
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*/
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int facing;
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/**
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* The orientation of the camera image. The value is the angle that the
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* camera image needs to be rotated clockwise so it shows correctly on the
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* display in its natural orientation. It should be 0, 90, 180, or 270.
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*
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* For example, suppose a device has a naturally tall screen. The
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* back-facing camera sensor is mounted in landscape. You are looking at
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* the screen. If the top side of the camera sensor is aligned with the
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* right edge of the screen in natural orientation, the value should be
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* 90. If the top side of a front-facing camera sensor is aligned with the
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* right of the screen, the value should be 270.
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*/
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int orientation;
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};
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class ICameraService;
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class ICamera;
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class Surface;
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class Mutex;
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class String8;
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// ref-counted object for callbacks
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class CameraListener: virtual public RefBase
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{
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public:
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virtual void notify(int32_t msgType, int32_t ext1, int32_t ext2) = 0;
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virtual void postData(int32_t msgType, const sp<IMemory>& dataPtr,
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camera_frame_metadata_t *metadata) = 0;
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virtual void postDataTimestamp(nsecs_t timestamp, int32_t msgType, const sp<IMemory>& dataPtr) = 0;
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};
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class Camera : public BnCameraClient, public IBinder::DeathRecipient
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{
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public:
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// construct a camera client from an existing remote
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static sp<Camera> create(const sp<ICamera>& camera);
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static int32_t getNumberOfCameras();
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static status_t getCameraInfo(int cameraId,
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struct CameraInfo* cameraInfo);
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static sp<Camera> connect(int cameraId);
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virtual ~Camera();
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void init();
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status_t reconnect();
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void disconnect();
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status_t lock();
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status_t unlock();
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status_t getStatus() { return mStatus; }
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// pass the buffered Surface to the camera service
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status_t setPreviewDisplay(const sp<Surface>& surface);
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// pass the buffered ISurfaceTexture to the camera service
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status_t setPreviewTexture(const sp<ISurfaceTexture>& surfaceTexture);
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// start preview mode, must call setPreviewDisplay first
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status_t startPreview();
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// stop preview mode
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void stopPreview();
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// get preview state
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bool previewEnabled();
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// start recording mode, must call setPreviewDisplay first
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status_t startRecording();
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// stop recording mode
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void stopRecording();
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// get recording state
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bool recordingEnabled();
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// release a recording frame
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void releaseRecordingFrame(const sp<IMemory>& mem);
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// autoFocus - status returned from callback
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status_t autoFocus();
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// cancel auto focus
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status_t cancelAutoFocus();
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// take a picture - picture returned from callback
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status_t takePicture(int msgType);
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// set preview/capture parameters - key/value pairs
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status_t setParameters(const String8& params);
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// get preview/capture parameters - key/value pairs
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String8 getParameters() const;
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// send command to camera driver
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status_t sendCommand(int32_t cmd, int32_t arg1, int32_t arg2);
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// tell camera hal to store meta data or real YUV in video buffers.
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status_t storeMetaDataInBuffers(bool enabled);
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void setListener(const sp<CameraListener>& listener);
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void setRecordingProxyListener(const sp<ICameraRecordingProxyListener>& listener);
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void setPreviewCallbackFlags(int preview_callback_flag);
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sp<ICameraRecordingProxy> getRecordingProxy();
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// ICameraClient interface
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virtual void notifyCallback(int32_t msgType, int32_t ext, int32_t ext2);
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virtual void dataCallback(int32_t msgType, const sp<IMemory>& dataPtr,
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camera_frame_metadata_t *metadata);
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virtual void dataCallbackTimestamp(nsecs_t timestamp, int32_t msgType, const sp<IMemory>& dataPtr);
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sp<ICamera> remote();
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class RecordingProxy : public BnCameraRecordingProxy
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{
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public:
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RecordingProxy(const sp<Camera>& camera);
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// ICameraRecordingProxy interface
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virtual status_t startRecording(const sp<ICameraRecordingProxyListener>& listener);
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virtual void stopRecording();
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virtual void releaseRecordingFrame(const sp<IMemory>& mem);
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private:
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sp<Camera> mCamera;
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};
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private:
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Camera();
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Camera(const Camera&);
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Camera& operator=(const Camera);
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virtual void binderDied(const wp<IBinder>& who);
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class DeathNotifier: public IBinder::DeathRecipient
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{
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public:
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DeathNotifier() {
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}
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virtual void binderDied(const wp<IBinder>& who);
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};
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static sp<DeathNotifier> mDeathNotifier;
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// helper function to obtain camera service handle
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static const sp<ICameraService>& getCameraService();
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sp<ICamera> mCamera;
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status_t mStatus;
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sp<CameraListener> mListener;
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sp<ICameraRecordingProxyListener> mRecordingProxyListener;
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friend class DeathNotifier;
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static Mutex mLock;
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static sp<ICameraService> mCameraService;
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};
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}; // namespace android
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#endif
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