Moved renderer implementation from media/filters/ to media/renderers/

media/renderers/audio_renderer_algorithm.h

 // Copyright (c) 2012 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.
 
 // AudioRendererAlgorithm buffers and transforms audio data. The owner of
 // this object provides audio data to the object through EnqueueBuffer() and
 // requests data from the buffer via FillBuffer().
 //
 // This class is *not* thread-safe. Calls to enqueue and retrieve data must be
 // locked if called from multiple threads.
 //
 // AudioRendererAlgorithm uses the Waveform Similarity Overlap and Add (WSOLA)
 // algorithm to stretch or compress audio data to meet playback speeds less than
 // or greater than the natural playback of the audio stream. The algorithm
 // preserves local properties of the audio, therefore, pitch and harmonics are
 // are preserved. See audio_renderer_algorith.cc for a more elaborate
 // description of the algorithm.
 //
 // Audio at very low or very high playback rates are muted to preserve quality.
 
-#ifndef MEDIA_FILTERS_AUDIO_RENDERER_ALGORITHM_H_
-#define MEDIA_FILTERS_AUDIO_RENDERER_ALGORITHM_H_
+#ifndef MEDIA_RENDERERS_AUDIO_RENDERER_ALGORITHM_H_

[DaleCurtis, 2015/02/23 19:46:47]

Hmm, this is an implementation detail of the AudioRenderer and should probably
go somewhere else.  I'm fine with leaving it in media/filters for now, although
it's really a means for implementing playback rate changes so it could be
renamed and put in media/base.

+#define MEDIA_RENDERERS_AUDIO_RENDERER_ALGORITHM_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "media/audio/audio_parameters.h"
 #include "media/base/audio_buffer.h"
 #include "media/base/audio_buffer_queue.h"
 
 namespace media {
 
 class AudioBus;
@@ skipping 162 matching lines @@
   // Stores the target block, denoted as |target| above. |search_block_| is
   // searched for a block (|optimal_block_|) that is most similar to
   // |target_block_|.
   scoped_ptr<AudioBus> target_block_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioRendererAlgorithm);
 };
 
 }  // namespace media
 
-#endif  // MEDIA_FILTERS_AUDIO_RENDERER_ALGORITHM_H_
+#endif  // MEDIA_RENDERERS_AUDIO_RENDERER_ALGORITHM_H_