mirror of
https://github.com/classilla/tenfourfox.git
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193 lines
5.9 KiB
C++
193 lines
5.9 KiB
C++
/*
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* Copyright (C) 2009 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 GONK_CAMERA_SOURCE_H_
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#define GONK_CAMERA_SOURCE_H_
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#include <media/stagefright/MediaBuffer.h>
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#include <media/stagefright/MediaSource.h>
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#include <camera/CameraParameters.h>
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#include <utils/List.h>
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#include <utils/RefBase.h>
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#include <utils/String16.h>
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#include "GonkCameraHwMgr.h"
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namespace mozilla {
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class ICameraControl;
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}
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namespace android {
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class IMemory;
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class GonkCameraSource : public MediaSource, public MediaBufferObserver {
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public:
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static GonkCameraSource *Create(const sp<GonkCameraHardware>& aCameraHw,
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Size videoSize,
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int32_t frameRate,
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bool storeMetaDataInVideoBuffers = false);
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static GonkCameraSource *Create(mozilla::ICameraControl* aControl,
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Size videoSize,
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int32_t frameRate);
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virtual ~GonkCameraSource();
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virtual status_t start(MetaData *params = NULL);
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virtual status_t stop() { return reset(); }
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virtual status_t read(
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MediaBuffer **buffer, const ReadOptions *options = NULL);
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/**
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* Check whether a GonkCameraSource object is properly initialized.
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* Must call this method before stop().
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* @return OK if initialization has successfully completed.
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*/
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virtual status_t initCheck() const;
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/**
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* Returns the MetaData associated with the GonkCameraSource,
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* including:
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* kKeyColorFormat: YUV color format of the video frames
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* kKeyWidth, kKeyHeight: dimension (in pixels) of the video frames
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* kKeySampleRate: frame rate in frames per second
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* kKeyMIMEType: always fixed to be MEDIA_MIMETYPE_VIDEO_RAW
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*/
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virtual sp<MetaData> getFormat();
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/**
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* Tell whether this camera source stores meta data or real YUV
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* frame data in video buffers.
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*
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* @return true if meta data is stored in the video
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* buffers; false if real YUV data is stored in
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* the video buffers.
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*/
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bool isMetaDataStoredInVideoBuffers() const;
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virtual void signalBufferReturned(MediaBuffer* buffer);
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/**
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* It sends recording frames to listener directly in the same thread.
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* Because recording frame is critical resource and it should not be
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* propagated to other thread as much as possible or there could be frame
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* rate jitter due to camera HAL waiting for resource.
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*/
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class DirectBufferListener : public RefBase {
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public:
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DirectBufferListener() {};
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virtual status_t BufferAvailable(MediaBuffer* aBuffer) = 0;
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protected:
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virtual ~DirectBufferListener() {}
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};
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status_t AddDirectBufferListener(DirectBufferListener* aListener);
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protected:
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enum CameraFlags {
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FLAGS_SET_CAMERA = 1L << 0,
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FLAGS_HOT_CAMERA = 1L << 1,
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};
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int32_t mCameraFlags;
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Size mVideoSize;
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int32_t mNumInputBuffers;
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int32_t mVideoFrameRate;
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int32_t mColorFormat;
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status_t mInitCheck;
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sp<MetaData> mMeta;
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int64_t mStartTimeUs;
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int32_t mNumFramesReceived;
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int64_t mLastFrameTimestampUs;
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bool mStarted;
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int32_t mNumFramesEncoded;
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// Time between capture of two frames.
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int64_t mTimeBetweenFrameCaptureUs;
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GonkCameraSource(const sp<GonkCameraHardware>& aCameraHw,
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Size videoSize, int32_t frameRate,
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bool storeMetaDataInVideoBuffers = false);
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virtual int startCameraRecording();
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virtual void stopCameraRecording();
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virtual void releaseRecordingFrame(const sp<IMemory>& frame);
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// Returns true if need to skip the current frame.
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// Called from dataCallbackTimestamp.
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virtual bool skipCurrentFrame(int64_t timestampUs) {return false;}
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friend class GonkCameraSourceListener;
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// Callback called when still camera raw data is available.
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virtual void dataCallback(int32_t msgType, const sp<IMemory> &data) {}
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virtual void dataCallbackTimestamp(int64_t timestampUs, int32_t msgType,
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const sp<IMemory> &data);
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private:
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Mutex mLock;
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Condition mFrameAvailableCondition;
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Condition mFrameCompleteCondition;
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List<sp<IMemory> > mFramesReceived;
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List<sp<IMemory> > mFramesBeingEncoded;
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List<int64_t> mFrameTimes;
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bool mRateLimit;
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int64_t mFirstFrameTimeUs;
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int32_t mNumFramesDropped;
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int32_t mNumGlitches;
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int64_t mGlitchDurationThresholdUs;
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bool mCollectStats;
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bool mIsMetaDataStoredInVideoBuffers;
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sp<GonkCameraHardware> mCameraHw;
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sp<DirectBufferListener> mDirectBufferListener;
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void releaseQueuedFrames();
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void releaseOneRecordingFrame(const sp<IMemory>& frame);
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status_t init(Size videoSize, int32_t frameRate,
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bool storeMetaDataInVideoBuffers);
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status_t isCameraColorFormatSupported(const CameraParameters& params);
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status_t configureCamera(CameraParameters* params,
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int32_t width, int32_t height,
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int32_t frameRate);
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status_t checkVideoSize(const CameraParameters& params,
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int32_t width, int32_t height);
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status_t checkFrameRate(const CameraParameters& params,
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int32_t frameRate);
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void releaseCamera();
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status_t reset();
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GonkCameraSource(const GonkCameraSource &);
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GonkCameraSource &operator=(const GonkCameraSource &);
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};
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} // namespace android
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#endif // GONK_CAMERA_SOURCE_H_
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