This is the frozen interface definition for the media pipeline, filters, and ...

media/base/pipeline_impl.h

-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2006-2009 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.
 
 // Implementation of Pipeline.
 
 #ifndef MEDIA_BASE_PIPELINE_IMPL_H_
 #define MEDIA_BASE_PIPELINE_IMPL_H_
 
-#include "base/scoped_ptr.h"
+#include <string>
+
 #include "media/base/pipeline.h"
 
 namespace media {
 
 class PipelineImpl : public Pipeline {
  public:
   PipelineImpl();
+  ~PipelineImpl();
 
-  // Pipeline implementation.
-  virtual bool Initialize(FilterFactoryInterface* filter_factory,
-                          const std::string& uri);
-  virtual bool Play();
-  virtual bool Pause();
-  virtual bool Seek(int64 seek_position);
-  virtual void Shutdown();
+  // Implementation of PipelineStatus methods.
+  virtual bool IsInitialized() const;
+  virtual int64 GetDuration() const;
+  virtual int64 GetBufferedTime() const;
+  virtual int64 GetTotalBytes() const;
+  virtual int64 GetBufferedBytes()const;
+  virtual void GetVideoSize(size_t* width_out, size_t* height_out) const;
+  virtual float GetVolume() const;
+  virtual float GetPlaybackRate() const;
   virtual int64 GetTime() const;
-  virtual int64 GetDuration() const;
-  virtual void SetStateChangedCallback(
-      Callback1<PipelineState>::Type* callback);
-  virtual void SetTimeChangedCallback(Callback1<int64>::Type* callback);
+  virtual PipelineError GetError() const;
 
- protected:
-  virtual ~PipelineImpl();
+  // Impementation of Pipeline methods.
+  virtual bool Start(FilterFactory* filter_factory,
+                     const std::string& uri,
+                     Callback1<bool>::Type* init_complete_callback);
+  virtual void Stop();
+  virtual bool SetPlaybackRate(float rate);
+  virtual bool Seek(int64 time);
+  virtual bool SetVolume(float volume);
 
  private:
-  int64 time_;
-  int64 duration_;
-  scoped_ptr<Callback1<PipelineState>::Type> state_changed_callback_;
-  scoped_ptr<Callback1<int64>::Type> time_changed_callback_;
-
   DISALLOW_COPY_AND_ASSIGN(PipelineImpl);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_PIPELINE_IMPL_H_