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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.
//
// MFT H.264 decode engine.
#ifndef MEDIA_VIDEO_MFT_H264_DECODE_ENGINE_H_
#define MEDIA_VIDEO_MFT_H264_DECODE_ENGINE_H_
// TODO(imcheng): Get rid of this header by:
// - forward declaring IMFTransform and its IID as in
// mft_h264_decode_engine_context.h
// - turning the general SendMFTMessage method into specific methods
// (SendFlushMessage, SendDrainMessage, etc.) to avoid having
// MFT_MESSAGE_TYPE in here
#include <mfidl.h>
#include <vector>
#include "base/gtest_prod_util.h"
#include "base/scoped_comptr_win.h"
#include "media/video/video_decode_engine.h"
struct IDirect3DSurface9;
extern "C" const GUID IID_IDirect3DSurface9;
class MessageLoop;
namespace media {
class VideoDecodeContext;
class MftH264DecodeEngine : public media::VideoDecodeEngine {
public:
typedef enum {
kUninitialized, // un-initialized.
kNormal, // normal playing state.
kFlushing, // upon received Flush(), before FlushDone()
kEosDrain, // upon input EOS received.
kStopped, // upon output EOS received.
} State;
explicit MftH264DecodeEngine(bool use_dxva);
virtual ~MftH264DecodeEngine();
// VideoDecodeEngine implementation.
virtual void Initialize(MessageLoop* message_loop,
media::VideoDecodeEngine::EventHandler* event_handler,
VideoDecodeContext* context,
const VideoCodecConfig& config);
virtual void Uninitialize();
virtual void Flush();
virtual void Seek();
virtual void ConsumeVideoSample(scoped_refptr<Buffer> buffer);
virtual void ProduceVideoFrame(scoped_refptr<VideoFrame> frame);
bool use_dxva() const { return use_dxva_; }
State state() const { return state_; }
private:
friend class MftH264DecodeEngineTest;
FRIEND_TEST_ALL_PREFIXES(MftH264DecodeEngineTest, LibraryInit);
// TODO(jiesun): Find a way to move all these to GpuVideoService..
static bool StartupComLibraries();
static void ShutdownComLibraries();
bool EnableDxva();
bool InitInternal();
bool InitDecodeEngine();
void AllocFramesFromContext();
bool CheckDecodeEngineDxvaSupport();
bool SetDecodeEngineMediaTypes();
bool SetDecodeEngineInputMediaType();
bool SetDecodeEngineOutputMediaType(const GUID subtype);
bool SendMFTMessage(MFT_MESSAGE_TYPE msg);
bool GetStreamsInfoAndBufferReqs();
bool DoDecode();
void OnAllocFramesDone();
void OnUploadVideoFrameDone(
ScopedComPtr<IDirect3DSurface9, &IID_IDirect3DSurface9> surface,
scoped_refptr<media::VideoFrame> frame);
bool use_dxva_;
ScopedComPtr<IMFTransform> decode_engine_;
MFT_INPUT_STREAM_INFO input_stream_info_;
MFT_OUTPUT_STREAM_INFO output_stream_info_;
State state_;
VideoDecodeEngine::EventHandler* event_handler_;
VideoCodecConfig config_;
VideoCodecInfo info_;
VideoDecodeContext* context_;
std::vector<scoped_refptr<VideoFrame> > output_frames_;
DISALLOW_COPY_AND_ASSIGN(MftH264DecodeEngine);
};
} // namespace media
#endif // MEDIA_VIDEO_MFT_H264_DECODE_ENGINE_H_
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