Add enumerations for compressed (E)AC3 sample format

media/audio/audio_manager_base.cc

 // 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.
 
 #include "media/audio/audio_manager_base.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/macros.h"
@@ skipping 118 matching lines @@
   AudioOutputStream* stream;
   switch (params.format()) {
     case AudioParameters::AUDIO_PCM_LINEAR:
       DCHECK(AudioDeviceDescription::IsDefaultDevice(device_id))
           << "AUDIO_PCM_LINEAR supports only the default device.";
       stream = MakeLinearOutputStream(params, log_callback);
       break;
     case AudioParameters::AUDIO_PCM_LOW_LATENCY:
       stream = MakeLowLatencyOutputStream(params, device_id, log_callback);
       break;
+    case AudioParameters::AUDIO_BITSTREAM_AC3:
+    case AudioParameters::AUDIO_BITSTREAM_EAC3:
+      // TODO(tsunghung): create passthrough output stream.

[DaleCurtis, 2016/11/17 00:02:15]

NOTREACHED()? 

[AndyWu, 2016/11/17 18:56:55]

Done.

+      stream = nullptr;
+      break;
     case AudioParameters::AUDIO_FAKE:
       stream = FakeAudioOutputStream::MakeFakeStream(this, params);
       break;
     default:
       stream = NULL;
       break;
   }
 
   if (stream) {
     ++num_output_streams_;
@@ skipping 233 matching lines @@
 
   return 0;
 }
 
 std::unique_ptr<AudioLog> AudioManagerBase::CreateAudioLog(
     AudioLogFactory::AudioComponent component) {
   return audio_log_factory_->CreateAudioLog(component);
 }
 
 }  // namespace media