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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.
//
// Short / basic implementation to simulate rendering H.264 frames outputs by
// MF's H.264 decoder to screen.
#ifndef MEDIA_MF_BASIC_RENDERER_H_
#define MEDIA_MF_BASIC_RENDERER_H_
#include <d3d9.h>
#include "base/scoped_ptr.h"
#include "base/scoped_comptr_win.h"
#include "media/base/video_frame.h"
#include "media/mf/mft_h264_decoder.h"
namespace media {
class MftRenderer : public base::RefCountedThreadSafe<MftRenderer> {
public:
explicit MftRenderer(MftH264Decoder* decoder) : decoder_(decoder) {}
virtual ~MftRenderer() {}
virtual void ProcessFrame(scoped_refptr<VideoFrame> frame) = 0;
virtual void StartPlayback() = 0;
virtual void StopPlayback() = 0;
protected:
scoped_refptr<MftH264Decoder> decoder_;
};
// This renderer does nothing with the frame except discarding it.
class NullRenderer : public MftRenderer {
public:
explicit NullRenderer(MftH264Decoder* decoder);
virtual ~NullRenderer();
virtual void ProcessFrame(scoped_refptr<VideoFrame> frame);
virtual void StartPlayback();
virtual void StopPlayback();
};
// This renderer does a basic playback by drawing to |window_|. It tries to
// respect timing specified in the recevied VideoFrames.
class BasicRenderer : public MftRenderer {
public:
explicit BasicRenderer(MftH264Decoder* decoder,
HWND window, IDirect3DDevice9* device);
virtual ~BasicRenderer();
virtual void ProcessFrame(scoped_refptr<VideoFrame> frame);
virtual void StartPlayback();
virtual void StopPlayback();
private:
HWND window_;
ScopedComPtr<IDirect3DDevice9> device_;
};
} // namespace media
#endif // MEDIA_MF_BASIC_RENDERER_H_
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