change opus sample format to kSampleFormatF32

media/formats/webm/webm_audio_client.cc

 // Copyright 2014 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/formats/webm/webm_audio_client.h"
 
 #include "media/base/audio_decoder_config.h"
 #include "media/base/channel_layout.h"
 #include "media/formats/webm/webm_constants.h"
 
@@ skipping 63 matching lines @@
   int codec_delay_in_frames = 0;
   if (codec_delay != -1) {
     codec_delay_in_frames =
         0.5 +
         samples_per_second * (static_cast<double>(codec_delay) /
                               base::Time::kNanosecondsPerSecond);
   }
 
   config->Initialize(
       audio_codec,
-      (audio_codec == kCodecOpus) ? kSampleFormatS16 : kSampleFormatPlanarF32,
+      (audio_codec == kCodecOpus) ? kSampleFormatF32 : kSampleFormatPlanarF32,

[DaleCurtis, 2014/08/04 20:04:30]

Might as well move this up to the (audio_codec == kCodecOpus) section above
where we set 48kHz.  I believe Android is actually using S16, so I don't know if
this will do something different there.

       channel_layout,
       samples_per_second,
       extra_data,
       extra_data_size,
       is_encrypted,
       true,
       base::TimeDelta::FromMicroseconds(
           (seek_preroll != -1 ? seek_preroll : 0) / 1000),
       codec_delay_in_frames);
   return config->IsValidConfig();
@@ skipping 34 matching lines @@
     MEDIA_LOG(log_cb_) << "Multiple values for id " << std::hex << id
                        << " specified (" << *dst << " and " << val << ")";
     return false;
   }
 
   *dst = val;
   return true;
 }
 
 }  // namespace media