Removing DataSource from Filter hierarchy

media/base/filter_host.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.
 
 // FilterHost describes an interface for individual filters to access and
 // modify global playback information.  Every filter is given a filter host
 // reference as part of initialization.
 //
 // This interface is intentionally verbose to cover the needs for the different
 // types of filters (see media/base/filters.h for filter definitions).  Filters
@@ skipping 10 matching lines @@
 #include "media/base/pipeline.h"
 
 namespace media {
 
 class MEDIA_EXPORT FilterHost {
  public:
   // Stops execution of the pipeline due to a fatal error.  Do not call this
   // method with PIPELINE_OK.
   virtual void SetError(PipelineStatus error) = 0;
 
   // Gets the current time in microseconds.

[Ami GONE FROM CHROMIUM, 2011/12/15 18:39:08]

"in microseconds" here and below is BS.

[acolwell GONE FROM CHROMIUM, 2011/12/15 20:57:59]

Done.

   virtual base::TimeDelta GetTime() const = 0;
 
   // Gets the duration in microseconds.
   virtual base::TimeDelta GetDuration() const = 0;
 
   // Updates the current time.  Other filters should poll to examine the updated
   // time.
   virtual void SetTime(base::TimeDelta time) = 0;
 
-  // Get the duration of the media in microseconds.  If the duration has not
-  // been determined yet, then returns 0.
-  virtual void SetDuration(base::TimeDelta duration) = 0;
-
-  // Set the approximate amount of playable data buffered so far in micro-
-  // seconds.
-  virtual void SetBufferedTime(base::TimeDelta buffered_time) = 0;
-
-  // Set the total size of the media file.
-  virtual void SetTotalBytes(int64 total_bytes) = 0;
-
-  // Sets the total number of bytes that are buffered on the client and ready to
-  // be played.
-  virtual void SetBufferedBytes(int64 buffered_bytes) = 0;
-
   // Sets the natural size of the video output in pixel units.
   virtual void SetNaturalVideoSize(const gfx::Size& size) = 0;
 
   // Notifies that this filter has ended, typically only called by filter graph
   // endpoints such as renderers.
   virtual void NotifyEnded() = 0;
 
-  // Sets the flag to indicate current network activity.
-  virtual void SetNetworkActivity(bool is_downloading_data) = 0;
-
   // Disable audio renderer by calling OnAudioRendererDisabled() on all
   // filters.
   virtual void DisableAudioRenderer() = 0;
 
-  // Sets the byte offset at which the client is requesting the video.
-  virtual void SetCurrentReadPosition(int64 offset) = 0;
-
-  // Gets the byte offset at which the client is requesting the video.
-  virtual int64 GetCurrentReadPosition() = 0;
-
  protected:
   virtual ~FilterHost() {}
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_FILTER_HOST_H_