Enable pcm_s32le audio decoding.

media/base/audio_buffer.cc

 // Copyright 2013 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.
 
 #include "media/base/audio_buffer.h"
 
 #include <cmath>
 
 #include "base/logging.h"
 #include "media/base/audio_bus.h"
@@ skipping 299 matching lines @@
                            int trim_start,
                            Dest* dest_data) {
   switch (sample_format) {
     case kSampleFormatU8:
       NOTREACHED();
       break;
     case kSampleFormatS16:
       InterleaveAndConvert<int16, Dest>(
           channel_data, frames_to_copy * channel_count, trim_start, dest_data);
       break;
+    case kSampleFormatS24:
     case kSampleFormatS32:
       InterleaveAndConvert<int32, Dest>(
           channel_data, frames_to_copy * channel_count, trim_start, dest_data);
       break;
     case kSampleFormatF32:
       InterleaveAndConvert<float, Dest>(
           channel_data, frames_to_copy * channel_count, trim_start, dest_data);
       break;
     case kSampleFormatPlanarS16:
       InterleaveAndConvert<int16, Dest>(channel_data, frames_to_copy,
@@ skipping 67 matching lines @@
       case kSampleFormatPlanarS32:
         // Planar data must be shifted per channel.
         for (int ch = 0; ch < channel_count_; ++ch) {
           memmove(channel_data_[ch] + (trim_start_ + start) * bytes_per_channel,
                   channel_data_[ch] + (trim_start_ + end) * bytes_per_channel,
                   bytes_per_channel * frames_to_copy);
         }
         break;
       case kSampleFormatU8:
       case kSampleFormatS16:
+      case kSampleFormatS24:
       case kSampleFormatS32:
       case kSampleFormatF32: {
         // Interleaved data can be shifted all at once.
         const int frame_size = channel_count_ * bytes_per_channel;
         memmove(channel_data_[0] + (trim_start_ + start) * frame_size,
                 channel_data_[0] + (trim_start_ + end) * frame_size,
                 frame_size * frames_to_copy);
         break;
       }
       case kUnknownSampleFormat:
         NOTREACHED() << "Invalid sample format!";
     }
   } else {
     CHECK_EQ(frames_to_copy, 0);
   }
 
   // Trim the leftover data off the end of the buffer and update duration.
   TrimEnd(frames_to_trim);
 }
 
 }  // namespace media