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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 "media/base/pts_heap.h"
#include "media/base/video_frame.h"
#include "media/filters/decoder_base.h"
#include "media/video/video_decode_engine.h"
#include "media/video/video_decode_context.h"
struct AVRational;
namespace ggl {
class Context;
} // namespace ggl
class IpcVideoDecoder : public media::VideoDecoder,
public media::VideoDecodeEngine::EventHandler {
public:
IpcVideoDecoder(MessageLoop* message_loop, ggl::Context* ggl_context);
virtual ~IpcVideoDecoder();
// media::Filter 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);
// media::VideoDecoder implementation.
virtual void Initialize(media::DemuxerStream* demuxer_stream,
media::FilterCallback* callback);
virtual const media::MediaFormat& media_format();
virtual void ProduceVideoFrame(scoped_refptr<media::VideoFrame> video_frame);
// TODO(hclam): Remove this method.
virtual bool ProvidesBuffer();
// media::VideoDecodeEngine::EventHandler implementation.
virtual void OnInitializeComplete(const media::VideoCodecInfo& info);
virtual void OnUninitializeComplete();
virtual void OnFlushComplete();
virtual void OnSeekComplete();
virtual void OnError();
// TODO(hclam): Remove this method.
virtual void OnFormatChange(media::VideoStreamInfo stream_info) {}
virtual void ProduceVideoSample(scoped_refptr<media::Buffer> buffer);
virtual void ConsumeVideoFrame(scoped_refptr<media::VideoFrame> frame);
private:
void OnReadComplete(media::Buffer* buffer);
void OnDestroyComplete();
int32 width_;
int32 height_;
media::MediaFormat media_format_;
scoped_ptr<media::FilterCallback> flush_callback_;
scoped_ptr<media::FilterCallback> seek_callback_;
scoped_ptr<media::FilterCallback> initialize_callback_;
scoped_ptr<media::FilterCallback> stop_callback_;
// Pointer to the demuxer stream that will feed us compressed buffers.
scoped_refptr<media::DemuxerStream> demuxer_stream_;
// This is the message loop that we should assign to VideoDecodeContext.
MessageLoop* decode_context_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_;
// This VideoDecodeEngine translate our requests to IPC commands to the
// GPU process.
// VideoDecodeEngine should run on IO Thread instead of Render Thread to
// avoid dead lock during tear down of the media pipeline.
scoped_ptr<media::VideoDecodeEngine> decode_engine_;
// Decoding context to be used by VideoDecodeEngine.
scoped_ptr<media::VideoDecodeContext> decode_context_;
DISALLOW_COPY_AND_ASSIGN(IpcVideoDecoder);
};
#endif // CHROME_RENDERER_MEDIA_IPC_VIDEO_DECODER_H_
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