Convert Filter::Seek() to use new callback system.

content/renderer/media/ipc_video_decoder.h

 // Copyright (c) 2011 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 CONTENT_RENDERER_MEDIA_IPC_VIDEO_DECODER_H_
 #define CONTENT_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;
 class RendererGLContext;
 
 class IpcVideoDecoder : public media::VideoDecoder,
                         public media::VideoDecodeEngine::EventHandler {
  public:
   IpcVideoDecoder(MessageLoop* message_loop, RendererGLContext* gl_context);
   virtual ~IpcVideoDecoder();
 
   // media::Filter implementation.
   virtual void Stop(media::FilterCallback* callback);
-  virtual void Seek(base::TimeDelta time, media::FilterCallback* callback);
+  virtual void Seek(base::TimeDelta time, const media::FilterStatusCB& cb);
   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,
                           media::StatisticsCallback* statsCallback);
   virtual const media::MediaFormat& media_format();
   virtual void ProduceVideoFrame(scoped_refptr<media::VideoFrame> video_frame);
 
@@ skipping 13 matching lines @@
   virtual void ConsumeVideoFrame(scoped_refptr<media::VideoFrame> frame,
                                  const media::PipelineStatistics& statistics);
 
  private:
   void OnReadComplete(media::Buffer* buffer);
   void OnDestroyComplete();
 
   media::MediaFormat media_format_;
 
   scoped_ptr<media::FilterCallback> flush_callback_;
-  scoped_ptr<media::FilterCallback> seek_callback_;
+  media::FilterStatusCB seek_cb_;
   scoped_ptr<media::FilterCallback> initialize_callback_;
   scoped_ptr<media::FilterCallback> stop_callback_;
   scoped_ptr<media::StatisticsCallback> statistics_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 RendererGLContext 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.
   RendererGLContext* gl_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  // CONTENT_RENDERER_MEDIA_IPC_VIDEO_DECODER_H_