refactoring decoder interface

media/filters/audio_renderer_base.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.
 
 // AudioRendererBase takes care of the tricky queuing work and provides simple
 // methods for subclasses to peek and poke at audio data.  In addition to
 // AudioRenderer interface methods this classes doesn't implement, subclasses
 // must also implement the following methods:
 //   OnInitialized
 //   OnStop
@@ skipping 37 matching lines @@
 
   // Called by Initialize().  |media_format| is the format of the AudioDecoder.
   // Subclasses should return true if they were able to initialize, false
   // otherwise.
   virtual bool OnInitialize(const MediaFormat& media_format) = 0;
 
   // Called by Stop().  Subclasses should perform any necessary cleanup during
   // this time, such as stopping any running threads.
   virtual void OnStop() = 0;
 
-  // Called when a AudioDecoder::Read() completes and decrements
+  // Called when a AudioDecoder completes decoding and decrements
   // |pending_reads_|.
-  virtual void OnReadComplete(Buffer* buffer_in);
+  virtual void OnFillBufferDone(scoped_refptr<Buffer> buffer_in);
 
   // Fills the given buffer with audio data by delegating to its |algorithm_|.
   // FillBuffer() also takes care of updating the clock. Returns the number of
   // bytes copied into |dest|, which may be less than or equal to |len|.
   //
   // If this method is returns less bytes than |len| (including zero), it could
   // be a sign that the pipeline is stalled or unable to stream the data fast
   // enough.  In such scenarios, the callee should zero out unused portions
   // of their buffer to playback silence.
   //
@@ skipping 63 matching lines @@
   // Filter callbacks.
   scoped_ptr<FilterCallback> pause_callback_;
   scoped_ptr<FilterCallback> seek_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioRendererBase);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_AUDIO_RENDERER_BASE_H_