Reporting a more accurate buffered time for the video tag

media/base/filter_host.h

 // 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.
 
 // 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 definitionss).  Filters
@@ skipping 56 matching lines @@
   // Sets the flag to indicate that our media is now loaded.
   virtual void SetLoaded(bool loaded) = 0;
 
   // Sets the flag to indicate current network activity.
   virtual void SetNetworkActivity(bool network_activity) = 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_