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/*
* Copyright 2012, 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 DIRECT_RENDERER_H_
#define DIRECT_RENDERER_H_
#include <media/stagefright/foundation/AHandler.h>
namespace android {
struct ABuffer;
struct IGraphicBufferProducer;
struct MediaCodec;
// An experimental renderer that only supports video and decodes video data
// as soon as it arrives using a MediaCodec instance, rendering it without
// delay. Primarily meant to finetune packet loss discovery and minimize
// latency.
struct DirectRenderer : public AHandler {
DirectRenderer(const sp<IGraphicBufferProducer> &bufferProducer);
void setFormat(size_t trackIndex, const sp<AMessage> &format);
void queueAccessUnit(size_t trackIndex, const sp<ABuffer> &accessUnit);
protected:
virtual void onMessageReceived(const sp<AMessage> &msg);
virtual ~DirectRenderer();
private:
enum {
kWhatVideoDecoderNotify,
kWhatRender,
};
struct OutputInfo {
size_t mIndex;
int64_t mTimeUs;
};
sp<IGraphicBufferProducer> mSurfaceTex;
sp<ALooper> mVideoDecoderLooper;
sp<MediaCodec> mVideoDecoder;
Vector<sp<ABuffer> > mVideoDecoderInputBuffers;
List<size_t> mVideoDecoderInputBuffersAvailable;
bool mVideoDecoderNotificationPending;
List<sp<ABuffer> > mVideoAccessUnits;
List<OutputInfo> mOutputBuffers;
bool mRenderPending;
int64_t mFirstRenderTimeUs;
int64_t mFirstRenderRealUs;
void onVideoDecoderNotify();
void onRender();
void queueVideoDecoderInputBuffers();
void scheduleVideoDecoderNotification();
void scheduleRenderIfNecessary();
void queueOutputBuffer(size_t index, int64_t timeUs);
DISALLOW_EVIL_CONSTRUCTORS(DirectRenderer);
};
} // namespace android
#endif // DIRECT_RENDERER_H_
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