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/*
* Copyright (C) 2014 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
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef MediaCodecSource_H_
#define MediaCodecSource_H_
#include <media/stagefright/foundation/ABase.h>
#include <media/stagefright/foundation/AHandlerReflector.h>
#include <media/stagefright/MediaSource.h>
namespace android {
class ALooper;
class AMessage;
class IGraphicBufferProducer;
class MediaCodec;
class MetaData;
struct MediaCodecSource : public MediaSource,
public MediaBufferObserver {
enum FlagBits {
FLAG_USE_SURFACE_INPUT = 1,
FLAG_USE_METADATA_INPUT = 2,
};
static sp<MediaCodecSource> Create(
const sp<ALooper> &looper,
const sp<AMessage> &format,
const sp<MediaSource> &source,
uint32_t flags = 0);
bool isVideo() const { return mIsVideo; }
sp<IGraphicBufferProducer> getGraphicBufferProducer();
// MediaSource
virtual status_t start(MetaData *params = NULL);
virtual status_t stop();
virtual status_t pause();
virtual sp<MetaData> getFormat() { return mMeta; }
virtual status_t read(
MediaBuffer **buffer,
const ReadOptions *options = NULL);
// MediaBufferObserver
virtual void signalBufferReturned(MediaBuffer *buffer);
// for AHandlerReflector
void onMessageReceived(const sp<AMessage> &msg);
protected:
virtual ~MediaCodecSource();
private:
struct Puller;
enum {
kWhatPullerNotify,
kWhatEncoderActivity,
kWhatStart,
kWhatStop,
kWhatPause,
};
MediaCodecSource(
const sp<ALooper> &looper,
const sp<AMessage> &outputFormat,
const sp<MediaSource> &source,
uint32_t flags = 0);
status_t onStart(MetaData *params);
status_t init();
status_t initEncoder();
void releaseEncoder();
status_t feedEncoderInputBuffers();
void suspend();
void resume(int64_t skipFramesBeforeUs = -1ll);
void signalEOS(status_t err = ERROR_END_OF_STREAM);
bool reachedEOS();
status_t postSynchronouslyAndReturnError(const sp<AMessage> &msg);
sp<ALooper> mLooper;
sp<ALooper> mCodecLooper;
sp<AHandlerReflector<MediaCodecSource> > mReflector;
sp<AMessage> mOutputFormat;
sp<MetaData> mMeta;
sp<Puller> mPuller;
sp<MediaCodec> mEncoder;
uint32_t mFlags;
List<uint32_t> mStopReplyIDQueue;
bool mIsVideo;
bool mStarted;
bool mStopping;
bool mDoMoreWorkPending;
sp<AMessage> mEncoderActivityNotify;
sp<IGraphicBufferProducer> mGraphicBufferProducer;
List<MediaBuffer *> mInputBufferQueue;
List<size_t> mAvailEncoderInputIndices;
List<int64_t> mDecodingTimeQueue; // decoding time (us) for video
// audio drift time
int64_t mFirstSampleTimeUs;
List<int64_t> mDriftTimeQueue;
// following variables are protected by mOutputBufferLock
Mutex mOutputBufferLock;
Condition mOutputBufferCond;
List<MediaBuffer*> mOutputBufferQueue;
bool mEncoderReachedEOS;
status_t mErrorCode;
DISALLOW_EVIL_CONSTRUCTORS(MediaCodecSource);
};
} // namespace android
#endif /* MediaCodecSource_H_ */
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