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diff --git a/media/video/ffmpeg_video_decode_engine.h b/media/video/ffmpeg_video_decode_engine.h
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+++ b/media/video/ffmpeg_video_decode_engine.h
@@ -0,0 +1,85 @@
+// 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 MEDIA_VIDEO_FFMPEG_VIDEO_DECODE_ENGINE_H_
+#define MEDIA_VIDEO_FFMPEG_VIDEO_DECODE_ENGINE_H_
+
+#include <deque>
+
+#include "base/scoped_ptr.h"
+#include "media/ffmpeg/ffmpeg_common.h"
+#include "media/video/video_decode_engine.h"
+
+// FFmpeg types.
+struct AVCodecContext;
+struct AVFrame;
+struct AVStream;
+
+namespace media {
+
+class FFmpegVideoAllocator;
+
+class FFmpegVideoDecodeEngine : public VideoDecodeEngine {
+ public:
+  FFmpegVideoDecodeEngine();
+  virtual ~FFmpegVideoDecodeEngine();
+
+  // Implementation of the VideoDecodeEngine Interface.
+  virtual void Initialize(MessageLoop* message_loop,
+                          VideoDecodeEngine::EventHandler* event_handler,
+                          const VideoCodecConfig& config);
+  virtual void EmptyThisBuffer(scoped_refptr<Buffer> buffer);
+  virtual void FillThisBuffer(scoped_refptr<VideoFrame> frame);
+  virtual void Uninitialize();
+  virtual void Flush();
+  virtual void Seek();
+
+  virtual AVCodecContext* codec_context() const { return codec_context_; }
+
+  virtual void SetCodecContextForTest(AVCodecContext* context) {
+    codec_context_ = context;
+  }
+
+  VideoFrame::Format GetSurfaceFormat() const;
+ private:
+  void DecodeFrame(scoped_refptr<Buffer> buffer);
+  void ReadInput();
+  void TryToFinishPendingFlush();
+
+  AVCodecContext* codec_context_;
+  AVStream* av_stream_;
+  scoped_ptr_malloc<AVFrame, ScopedPtrAVFree> av_frame_;
+  VideoDecodeEngine::EventHandler* event_handler_;
+
+  // Whether direct rendering is used.
+  bool direct_rendering_;
+
+  // Used when direct rendering is used to recycle output buffers.
+  scoped_ptr<FFmpegVideoAllocator> allocator_;
+
+  // Indicate how many buffers are pending on input port of this filter:
+  // Increment when engine receive one input packet from demuxer;
+  // Decrement when engine send one input packet to demuxer;
+  int pending_input_buffers_;
+
+  // Indicate how many buffers are pending on output port of this filter:
+  // Increment when engine receive one output frame from renderer;
+  // Decrement when engine send one output frame to renderer;
+  int pending_output_buffers_;
+
+  // Whether end of stream had been reached at output side.
+  bool output_eos_reached_;
+
+  // Used when direct rendering is disabled to hold available output buffers.
+  std::deque<scoped_refptr<VideoFrame> > frame_queue_available_;
+
+  // Whether flush operation is pending.
+  bool flush_pending_;
+
+  DISALLOW_COPY_AND_ASSIGN(FFmpegVideoDecodeEngine);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_VIDEO_FFMPEG_VIDEO_DECODE_ENGINE_H_