Add alaw codec for .wav files.

media/base/audio_decoder_config.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.
 
 #ifndef MEDIA_BASE_AUDIO_DECODER_CONFIG_H_
 #define MEDIA_BASE_AUDIO_DECODER_CONFIG_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 15 matching lines @@
   kCodecVorbis,
   kCodecFLAC,
   kCodecAMR_NB,
   kCodecAMR_WB,
   kCodecPCM_MULAW,
   kCodecGSM_MS,
   kCodecPCM_S16BE,
   kCodecPCM_S24BE,
   kCodecOpus,
   kCodecEAC3,
+  kCodecPCM_ALAW,
   // DO NOT ADD RANDOM AUDIO CODECS!
   //
   // The only acceptable time to add a new codec is if there is production code
   // that uses said codec in the same CL.
 
   // Must always be last!
   kAudioCodecMax
 };
 
 // TODO(dalecurtis): FFmpeg API uses |bytes_per_channel| instead of
@@ skipping 72 matching lines @@
   base::TimeDelta codec_delay_;
 
   // Not using DISALLOW_COPY_AND_ASSIGN here intentionally to allow the compiler
   // generated copy constructor and assignment operator. Since the extra data is
   // typically small, the performance impact is minimal.
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_AUDIO_DECODER_CONFIG_H_