Merge 21999 - BufferedDataSource to support server without range request supp...

media/base/pipeline.h

 // Copyright (c) 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.
 
 // The pipeline is the public API clients use for playing back media.  Clients
 // provide a filter factory containing the filters they want the pipeline to
 // use to render media.
 
 #ifndef MEDIA_BASE_PIPELINE_H_
 #define MEDIA_BASE_PIPELINE_H_
@@ skipping 129 matching lines @@
   virtual int64 GetBufferedBytes() const = 0;
 
   // Get the total size of the media file.  If the size has not yet been
   // determined or can not be determined, this value is 0.
   virtual int64 GetTotalBytes() const = 0;
 
   // Gets the size of the video output in pixel units.  If there is no video
   // or the video has not been rendered yet, the width and height will be 0.
   virtual void GetVideoSize(size_t* width_out, size_t* height_out) const = 0;
 
+  // If this method returns true, that means the data source is a streaming
+  // data source. Seeking may not be possible.
+  virtual bool IsStreaming() const = 0;
+
   // Gets the current error status for the pipeline.  If the pipeline is
   // operating correctly, this will return OK.
   virtual PipelineError GetError() const = 0;
 
  protected:
   // Only allow ourselves to be deleted by reference counting.
   friend class base::RefCountedThreadSafe<Pipeline>;
   virtual ~Pipeline() {}
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_PIPELINE_H_