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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_RENDERER_MEDIA_IPC_VIDEO_DECODER_H_
#define CHROME_RENDERER_MEDIA_IPC_VIDEO_DECODER_H_
#include "base/time.h"
#include "chrome/renderer/gpu_video_service_host.h"
#include "media/base/pts_heap.h"
#include "media/base/video_frame.h"
#include "media/filters/decoder_base.h"
struct AVRational;
namespace media {
class VideoDecodeEngine;
class IpcVideoDecoder : public VideoDecoder,
public GpuVideoDecoderHost::EventHandler {
public:
explicit IpcVideoDecoder(MessageLoop* message_loop);
virtual ~IpcVideoDecoder();
static FilterFactory* CreateFactory(MessageLoop* message_loop);
static bool IsMediaFormatSupported(const MediaFormat& media_format);
// MediaFilter implementation.
virtual void Stop(FilterCallback* callback);
virtual void Seek(base::TimeDelta time, FilterCallback* callback);
virtual void Pause(FilterCallback* callback);
virtual void Flush(FilterCallback* callback);
// Decoder implementation.
virtual void Initialize(DemuxerStream* demuxer_stream,
FilterCallback* callback);
virtual const MediaFormat& media_format() { return media_format_; }
virtual void FillThisBuffer(scoped_refptr<VideoFrame> video_frame);
// GpuVideoDecoderHost::EventHandler.
virtual void OnInitializeDone(bool success,
const GpuVideoDecoderInitDoneParam& param);
virtual void OnUninitializeDone();
virtual void OnFlushDone();
virtual void OnEmptyBufferDone(scoped_refptr<Buffer> buffer);
virtual void OnFillBufferDone(scoped_refptr<VideoFrame> frame);
virtual void OnDeviceError();
virtual bool ProvidesBuffer();
private:
void OnSeekComplete(FilterCallback* callback);
void OnReadComplete(Buffer* buffer);
void ReadCompleteTask(scoped_refptr<Buffer> buffer);
private:
friend class FilterFactoryImpl2<IpcVideoDecoder,
VideoDecodeEngine*,
MessageLoop*>;
private:
int32 width_;
int32 height_;
MediaFormat media_format_;
scoped_ptr<FilterCallback> flush_callback_;
scoped_ptr<FilterCallback> initialize_callback_;
scoped_ptr<FilterCallback> stop_callback_;
enum DecoderState {
kUnInitialized,
kPlaying,
kFlushing,
kPausing,
kFlushCodec,
kEnded,
kStopped,
};
DecoderState state_;
// Tracks the number of asynchronous reads issued to |demuxer_stream_|.
// Using size_t since it is always compared against deque::size().
size_t pending_reads_;
// Tracks the number of asynchronous reads issued from renderer.
size_t pending_requests_;
// Pointer to the demuxer stream that will feed us compressed buffers.
scoped_refptr<DemuxerStream> demuxer_stream_;
MessageLoop* renderer_thread_message_loop_;
scoped_refptr<GpuVideoDecoderHost> gpu_video_decoder_host_;
DISALLOW_COPY_AND_ASSIGN(IpcVideoDecoder);
};
} // namespace media
#endif // CHROME_RENDERER_MEDIA_IPC_VIDEO_DECODER_H_
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