[Chromecast] Add new volume control API to CastMediaShlib

chromecast/media/audio/cast_audio_output_stream.cc

 // Copyright 2015 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 "chromecast/media/audio/cast_audio_output_stream.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "chromecast/base/metrics/cast_metrics_helper.h"
 #include "chromecast/base/task_runner_impl.h"
 #include "chromecast/media/audio/cast_audio_manager.h"
 #include "chromecast/media/cma/base/decoder_buffer_adapter.h"
 #include "chromecast/public/media/decoder_config.h"
 #include "chromecast/public/media/media_pipeline_backend.h"
 #include "chromecast/public/media/media_pipeline_device_params.h"
+#include "chromecast/public/volume_control.h"
+#include "media/audio/audio_device_description.h"
 #include "media/base/decoder_buffer.h"
 
 namespace {
 const int kMaxQueuedDataMs = 1000;
 }  // namespace
 
 namespace chromecast {
 namespace media {
 
 // Backend represents a MediaPipelineBackend adapter.
@@ skipping 12 matching lines @@
   bool Open(const ::media::AudioParameters& audio_params,
             CastAudioManager* audio_manager) {
     DCHECK(thread_checker_.CalledOnValidThread());
     DCHECK(audio_manager);
     DCHECK(backend_ == nullptr);
 
     backend_task_runner_.reset(new TaskRunnerImpl());
     MediaPipelineDeviceParams device_params(
         MediaPipelineDeviceParams::kModeIgnorePts,
         MediaPipelineDeviceParams::kAudioStreamSoundEffects,
-        backend_task_runner_.get());
+        backend_task_runner_.get(), AudioContentType::kMedia,
+        ::media::AudioDeviceDescription::kDefaultDeviceId);
     backend_ = audio_manager->CreateMediaPipelineBackend(device_params);
     if (!backend_)
       return false;
 
     decoder_ = backend_->CreateAudioDecoder();
     if (!decoder_)
       return false;
     decoder_->SetDelegate(this);
 
     AudioConfig audio_config;
@@ skipping 262 matching lines @@
 
   audio_manager_->GetTaskRunner()->PostDelayedTask(
       FROM_HERE, base::Bind(&CastAudioOutputStream::PushBuffer,
                             weak_factory_.GetWeakPtr()),
       delay);
   push_in_progress_ = true;
 }
 
 }  // namespace media
 }  // namespace chromecast