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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 ggl {
class Context;
} // namespace ggl
class IpcVideoDecoder : public media::VideoDecoder,
public GpuVideoDecoderHost::EventHandler {
public:
explicit IpcVideoDecoder(MessageLoop* message_loop,
ggl::Context* ggl_context);
virtual ~IpcVideoDecoder();
static media::FilterFactory* CreateFactory(MessageLoop* message_loop,
ggl::Context* ggl_context);
static bool IsMediaFormatSupported(const media::MediaFormat& media_format);
// MediaFilter implementation.
virtual void Stop(media::FilterCallback* callback);
virtual void Seek(base::TimeDelta time, media::FilterCallback* callback);
virtual void Pause(media::FilterCallback* callback);
virtual void Flush(media::FilterCallback* callback);
// Decoder implementation.
virtual void Initialize(media::DemuxerStream* demuxer_stream,
media::FilterCallback* callback);
virtual const media::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<media::Buffer> buffer);
virtual void OnFillBufferDone(scoped_refptr<media::VideoFrame> frame);
virtual void OnDeviceError();
virtual bool ProvidesBuffer();
private:
enum DecoderState {
kUnInitialized,
kPlaying,
kFlushing,
kPausing,
kFlushCodec,
kEnded,
kStopped,
};
void OnSeekComplete(media::FilterCallback* callback);
void OnReadComplete(media::Buffer* buffer);
void ReadCompleteTask(scoped_refptr<media::Buffer> buffer);
int32 width_;
int32 height_;
media::MediaFormat media_format_;
scoped_ptr<media::FilterCallback> flush_callback_;
scoped_ptr<media::FilterCallback> initialize_callback_;
scoped_ptr<media::FilterCallback> stop_callback_;
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<media::DemuxerStream> demuxer_stream_;
MessageLoop* renderer_thread_message_loop_;
// A context for allocating textures and issuing GLES2 commands.
// TODO(hclam): A ggl::Context lives on the Render Thread while this object
// lives on the Video Decoder Thread, we need to take care of context lost
// and destruction of the context.
ggl::Context* ggl_context_;
scoped_refptr<GpuVideoDecoderHost> gpu_video_decoder_host_;
DISALLOW_COPY_AND_ASSIGN(IpcVideoDecoder);
};
#endif // CHROME_RENDERER_MEDIA_IPC_VIDEO_DECODER_H_
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