1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/camera/GonkCameraSource.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,164 @@
1.4 +/*
1.5 + * Copyright (C) 2009 The Android Open Source Project
1.6 + *
1.7 + * Licensed under the Apache License, Version 2.0 (the "License");
1.8 + * you may not use this file except in compliance with the License.
1.9 + * You may obtain a copy of the License at
1.10 + *
1.11 + * http://www.apache.org/licenses/LICENSE-2.0
1.12 + *
1.13 + * Unless required by applicable law or agreed to in writing, software
1.14 + * distributed under the License is distributed on an "AS IS" BASIS,
1.15 + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
1.16 + * See the License for the specific language governing permissions and
1.17 + * limitations under the License.
1.18 + */
1.19 +
1.20 +#ifndef GONK_CAMERA_SOURCE_H_
1.21 +
1.22 +#define GONK_CAMERA_SOURCE_H_
1.23 +
1.24 +#include <media/stagefright/MediaBuffer.h>
1.25 +#include <media/stagefright/MediaSource.h>
1.26 +#include <camera/CameraParameters.h>
1.27 +#include <utils/List.h>
1.28 +#include <utils/RefBase.h>
1.29 +#include <utils/String16.h>
1.30 +
1.31 +#include "GonkCameraHwMgr.h"
1.32 +
1.33 +namespace android {
1.34 +
1.35 +class IMemory;
1.36 +
1.37 +class GonkCameraSource : public MediaSource, public MediaBufferObserver {
1.38 +public:
1.39 +
1.40 + static GonkCameraSource *Create(const sp<GonkCameraHardware>& aCameraHw,
1.41 + Size videoSize,
1.42 + int32_t frameRate,
1.43 + bool storeMetaDataInVideoBuffers = false);
1.44 +
1.45 + virtual ~GonkCameraSource();
1.46 +
1.47 + virtual status_t start(MetaData *params = NULL);
1.48 + virtual status_t stop() { return reset(); }
1.49 + virtual status_t read(
1.50 + MediaBuffer **buffer, const ReadOptions *options = NULL);
1.51 +
1.52 + /**
1.53 + * Check whether a GonkCameraSource object is properly initialized.
1.54 + * Must call this method before stop().
1.55 + * @return OK if initialization has successfully completed.
1.56 + */
1.57 + virtual status_t initCheck() const;
1.58 +
1.59 + /**
1.60 + * Returns the MetaData associated with the GonkCameraSource,
1.61 + * including:
1.62 + * kKeyColorFormat: YUV color format of the video frames
1.63 + * kKeyWidth, kKeyHeight: dimension (in pixels) of the video frames
1.64 + * kKeySampleRate: frame rate in frames per second
1.65 + * kKeyMIMEType: always fixed to be MEDIA_MIMETYPE_VIDEO_RAW
1.66 + */
1.67 + virtual sp<MetaData> getFormat();
1.68 +
1.69 + /**
1.70 + * Tell whether this camera source stores meta data or real YUV
1.71 + * frame data in video buffers.
1.72 + *
1.73 + * @return true if meta data is stored in the video
1.74 + * buffers; false if real YUV data is stored in
1.75 + * the video buffers.
1.76 + */
1.77 + bool isMetaDataStoredInVideoBuffers() const;
1.78 +
1.79 + virtual void signalBufferReturned(MediaBuffer* buffer);
1.80 +
1.81 +protected:
1.82 +
1.83 + enum CameraFlags {
1.84 + FLAGS_SET_CAMERA = 1L << 0,
1.85 + FLAGS_HOT_CAMERA = 1L << 1,
1.86 + };
1.87 +
1.88 + int32_t mCameraFlags;
1.89 + Size mVideoSize;
1.90 + int32_t mNumInputBuffers;
1.91 + int32_t mVideoFrameRate;
1.92 + int32_t mColorFormat;
1.93 + status_t mInitCheck;
1.94 +
1.95 + sp<MetaData> mMeta;
1.96 +
1.97 + int64_t mStartTimeUs;
1.98 + int32_t mNumFramesReceived;
1.99 + int64_t mLastFrameTimestampUs;
1.100 + bool mStarted;
1.101 + int32_t mNumFramesEncoded;
1.102 +
1.103 + // Time between capture of two frames.
1.104 + int64_t mTimeBetweenFrameCaptureUs;
1.105 +
1.106 + GonkCameraSource(const sp<GonkCameraHardware>& aCameraHw,
1.107 + Size videoSize, int32_t frameRate,
1.108 + bool storeMetaDataInVideoBuffers = false);
1.109 +
1.110 + virtual int startCameraRecording();
1.111 + virtual void stopCameraRecording();
1.112 + virtual void releaseRecordingFrame(const sp<IMemory>& frame);
1.113 +
1.114 + // Returns true if need to skip the current frame.
1.115 + // Called from dataCallbackTimestamp.
1.116 + virtual bool skipCurrentFrame(int64_t timestampUs) {return false;}
1.117 +
1.118 + friend class GonkCameraSourceListener;
1.119 + // Callback called when still camera raw data is available.
1.120 + virtual void dataCallback(int32_t msgType, const sp<IMemory> &data) {}
1.121 +
1.122 + virtual void dataCallbackTimestamp(int64_t timestampUs, int32_t msgType,
1.123 + const sp<IMemory> &data);
1.124 +
1.125 +private:
1.126 +
1.127 + Mutex mLock;
1.128 + Condition mFrameAvailableCondition;
1.129 + Condition mFrameCompleteCondition;
1.130 + List<sp<IMemory> > mFramesReceived;
1.131 + List<sp<IMemory> > mFramesBeingEncoded;
1.132 + List<int64_t> mFrameTimes;
1.133 +
1.134 + int64_t mFirstFrameTimeUs;
1.135 + int32_t mNumFramesDropped;
1.136 + int32_t mNumGlitches;
1.137 + int64_t mGlitchDurationThresholdUs;
1.138 + bool mCollectStats;
1.139 + bool mIsMetaDataStoredInVideoBuffers;
1.140 + sp<GonkCameraHardware> mCameraHw;
1.141 +
1.142 + void releaseQueuedFrames();
1.143 + void releaseOneRecordingFrame(const sp<IMemory>& frame);
1.144 +
1.145 + status_t init(Size videoSize, int32_t frameRate,
1.146 + bool storeMetaDataInVideoBuffers);
1.147 + status_t isCameraColorFormatSupported(const CameraParameters& params);
1.148 + status_t configureCamera(CameraParameters* params,
1.149 + int32_t width, int32_t height,
1.150 + int32_t frameRate);
1.151 +
1.152 + status_t checkVideoSize(const CameraParameters& params,
1.153 + int32_t width, int32_t height);
1.154 +
1.155 + status_t checkFrameRate(const CameraParameters& params,
1.156 + int32_t frameRate);
1.157 +
1.158 + void releaseCamera();
1.159 + status_t reset();
1.160 +
1.161 + GonkCameraSource(const GonkCameraSource &);
1.162 + GonkCameraSource &operator=(const GonkCameraSource &);
1.163 +};
1.164 +
1.165 +} // namespace android
1.166 +
1.167 +#endif // GONK_CAMERA_SOURCE_H_
