1/* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#ifndef MediaCodecSource_H_ 18#define MediaCodecSource_H_ 19 20#include <media/stagefright/foundation/ABase.h> 21#include <media/stagefright/foundation/AHandlerReflector.h> 22#include <media/stagefright/foundation/Mutexed.h> 23#include <media/stagefright/MediaSource.h> 24 25#include <gui/IGraphicBufferConsumer.h> 26 27namespace android { 28 29struct ALooper; 30struct AMessage; 31struct AReplyToken; 32class IGraphicBufferProducer; 33struct MediaCodec; 34class MetaData; 35 36struct MediaCodecSource : public MediaSource, 37 public MediaBufferObserver { 38 enum FlagBits { 39 FLAG_USE_SURFACE_INPUT = 1, 40 FLAG_PREFER_SOFTWARE_CODEC = 4, // used for testing only 41 }; 42 43 static sp<MediaCodecSource> Create( 44 const sp<ALooper> &looper, 45 const sp<AMessage> &format, 46 const sp<MediaSource> &source, 47 const sp<IGraphicBufferConsumer> &consumer = NULL, 48 uint32_t flags = 0); 49 50 bool isVideo() const { return mIsVideo; } 51 sp<IGraphicBufferProducer> getGraphicBufferProducer(); 52 void setInputBufferTimeOffset(int64_t timeOffsetUs); 53 54 // MediaSource 55 virtual status_t start(MetaData *params = NULL); 56 virtual status_t stop(); 57 virtual status_t pause(); 58 virtual sp<MetaData> getFormat(); 59 virtual status_t read( 60 MediaBuffer **buffer, 61 const ReadOptions *options = NULL); 62 63 // MediaBufferObserver 64 virtual void signalBufferReturned(MediaBuffer *buffer); 65 66 // for AHandlerReflector 67 void onMessageReceived(const sp<AMessage> &msg); 68 69protected: 70 virtual ~MediaCodecSource(); 71 72private: 73 struct Puller; 74 75 enum { 76 kWhatPullerNotify, 77 kWhatEncoderActivity, 78 kWhatStart, 79 kWhatStop, 80 kWhatPause, 81 kWhatSetInputBufferTimeOffset, 82 kWhatStopStalled, 83 }; 84 85 MediaCodecSource( 86 const sp<ALooper> &looper, 87 const sp<AMessage> &outputFormat, 88 const sp<MediaSource> &source, 89 const sp<IGraphicBufferConsumer> &consumer, 90 uint32_t flags = 0); 91 92 status_t onStart(MetaData *params); 93 status_t init(); 94 status_t initEncoder(); 95 void releaseEncoder(); 96 status_t feedEncoderInputBuffers(); 97 void suspend(); 98 void resume(int64_t skipFramesBeforeUs = -1ll); 99 void signalEOS(status_t err = ERROR_END_OF_STREAM); 100 bool reachedEOS(); 101 status_t postSynchronouslyAndReturnError(const sp<AMessage> &msg); 102 103 sp<ALooper> mLooper; 104 sp<ALooper> mCodecLooper; 105 sp<AHandlerReflector<MediaCodecSource> > mReflector; 106 sp<AMessage> mOutputFormat; 107 Mutexed<sp<MetaData>> mMeta; 108 sp<Puller> mPuller; 109 sp<MediaCodec> mEncoder; 110 uint32_t mFlags; 111 List<sp<AReplyToken>> mStopReplyIDQueue; 112 bool mIsVideo; 113 bool mStarted; 114 bool mStopping; 115 bool mDoMoreWorkPending; 116 bool mSetEncoderFormat; 117 int32_t mEncoderFormat; 118 int32_t mEncoderDataSpace; 119 sp<AMessage> mEncoderActivityNotify; 120 sp<IGraphicBufferProducer> mGraphicBufferProducer; 121 sp<IGraphicBufferConsumer> mGraphicBufferConsumer; 122 List<MediaBuffer *> mInputBufferQueue; 123 List<size_t> mAvailEncoderInputIndices; 124 List<int64_t> mDecodingTimeQueue; // decoding time (us) for video 125 int64_t mInputBufferTimeOffsetUs; 126 127 // audio drift time 128 int64_t mFirstSampleTimeUs; 129 List<int64_t> mDriftTimeQueue; 130 131 struct Output { 132 Output(); 133 List<MediaBuffer*> mBufferQueue; 134 bool mEncoderReachedEOS; 135 status_t mErrorCode; 136 Condition mCond; 137 }; 138 Mutexed<Output> mOutput; 139 140 int32_t mGeneration; 141 142 DISALLOW_EVIL_CONSTRUCTORS(MediaCodecSource); 143}; 144 145} // namespace android 146 147#endif /* MediaCodecSource_H_ */ 148