Implement hook to change audio output device for PulseAudio.

media/audio/pulse/audio_manager_pulse.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/audio/pulse/audio_manager_pulse.h"
 
 #include "base/command_line.h"
 #include "base/environment.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
@@ skipping 114 matching lines @@
 
   // TODO(xians): add support for querying native channel layout for pulse.
   return AudioParameters(
       AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_STEREO,
       GetNativeSampleRate(), 16, kDefaultInputBufferSize);
 }
 
 AudioOutputStream* AudioManagerPulse::MakeLinearOutputStream(
     const AudioParameters& params) {
   DCHECK_EQ(AudioParameters::AUDIO_PCM_LINEAR, params.format());
-  return MakeOutputStream(params);
+  return MakeOutputStream(params, AudioManagerBase::kDefaultDeviceId);
 }
 
 AudioOutputStream* AudioManagerPulse::MakeLowLatencyOutputStream(
     const AudioParameters& params,
     const std::string& device_id) {
-  DLOG_IF(ERROR, !device_id.empty()) << "Not implemented!";
   DCHECK_EQ(AudioParameters::AUDIO_PCM_LOW_LATENCY, params.format());
-  return MakeOutputStream(params);
+  return MakeOutputStream(
+      params,
+      device_id.empty() ? AudioManagerBase::kDefaultDeviceId : device_id);
 }
 
 AudioInputStream* AudioManagerPulse::MakeLinearInputStream(
     const AudioParameters& params, const std::string& device_id) {
   DCHECK_EQ(AudioParameters::AUDIO_PCM_LINEAR, params.format());
   return MakeInputStream(params, device_id);
 }
 
 AudioInputStream* AudioManagerPulse::MakeLowLatencyInputStream(
     const AudioParameters& params, const std::string& device_id) {
@@ skipping 26 matching lines @@
   int user_buffer_size = GetUserBufferSize();
   if (user_buffer_size)
     buffer_size = user_buffer_size;
 
   return AudioParameters(
       AudioParameters::AUDIO_PCM_LOW_LATENCY, channel_layout, input_channels,
       sample_rate, bits_per_sample, buffer_size, AudioParameters::NO_EFFECTS);
 }
 
 AudioOutputStream* AudioManagerPulse::MakeOutputStream(
-    const AudioParameters& params) {
-  return new PulseAudioOutputStream(params, this);
+    const AudioParameters& params,
+    const std::string& device_id) {
+  DCHECK(!device_id.empty());
+  return new PulseAudioOutputStream(params, device_id, this);
 }
 
 AudioInputStream* AudioManagerPulse::MakeInputStream(
     const AudioParameters& params, const std::string& device_id) {
   return new PulseAudioInputStream(this, device_id, params,
                                    input_mainloop_, input_context_);
 }
 
 int AudioManagerPulse::GetNativeSampleRate() {
   DCHECK(input_mainloop_);
@@ skipping 121 matching lines @@
 void AudioManagerPulse::SampleRateInfoCallback(pa_context* context,
                                                const pa_server_info* info,
                                                void* user_data) {
   AudioManagerPulse* manager = reinterpret_cast<AudioManagerPulse*>(user_data);
 
   manager->native_input_sample_rate_ = info->sample_spec.rate;
   pa_threaded_mainloop_signal(manager->input_mainloop_, 0);
 }
 
 }  // namespace media