Implement GetAudioOutputDeviceNames for Android.

media/audio/android/audio_manager_android.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/android/audio_manager_android.h"
 
 #include "base/logging.h"
 #include "jni/AudioManagerAndroid_jni.h"
 #include "media/audio/android/opensles_input.h"
 #include "media/audio/android/opensles_output.h"
 #include "media/audio/audio_manager.h"
 #include "media/audio/audio_parameters.h"
 #include "media/audio/audio_util.h"
 #include "media/audio/fake_audio_input_stream.h"
 #include "media/base/channel_layout.h"
 
 namespace media {
 
+namespace {
+
+void AddDefaultDevice(AudioDeviceNames* device_names) {
+  DCHECK(device_names->empty());
+  device_names->push_front(
+      AudioDeviceName(kDefaultDeviceName, kDefaultDeviceId));
+}
+
+}  // namespace
+
 // Maximum number of output streams that can be open simultaneously.
 static const int kMaxOutputStreams = 10;
 
 static const int kAudioModeNormal = 0x00000000;
 static const int kAudioModeInCommunication = 0x00000003;
 
 static const int kDefaultInputBufferSize = 1024;
 static const int kDefaultOutputBufferSize = 2048;
 
 AudioManager* CreateAudioManager() {
@@ skipping 15 matching lines @@
 
 bool AudioManagerAndroid::HasAudioOutputDevices() {
   return true;
 }
 
 bool AudioManagerAndroid::HasAudioInputDevices() {
   return true;
 }
 
 void AudioManagerAndroid::GetAudioInputDeviceNames(
-    media::AudioDeviceNames* device_names) {
-  DCHECK(device_names->empty());
-  device_names->push_front(
-      media::AudioDeviceName(kDefaultDeviceName, kDefaultDeviceId));
+    AudioDeviceNames* device_names) {
+  AddDefaultDevice(device_names);
+}
+
+void AudioManagerAndroid::GetAudioOutputDeviceNames(
+    AudioDeviceNames* device_names) {
+  AddDefaultDevice(device_names);
 }
 
 AudioParameters AudioManagerAndroid::GetInputStreamParameters(
     const std::string& device_id) {
   // Use mono as preferred number of input channels on Android to save
   // resources. Using mono also avoids a driver issue seen on Samsung
   // Galaxy S3 and S4 devices. See http://crbug.com/256851 for details.
   ChannelLayout channel_layout = CHANNEL_LAYOUT_MONO;
   int buffer_size = Java_AudioManagerAndroid_getMinInputFrameSize(
       base::android::AttachCurrentThread(), GetNativeOutputSampleRate(),
@@ skipping 15 matching lines @@
   if (stream && output_stream_count() == 1) {
     SetAudioMode(kAudioModeInCommunication);
     RegisterHeadsetReceiver();
   }
   return stream;
 }
 
 AudioInputStream* AudioManagerAndroid::MakeAudioInputStream(
     const AudioParameters& params, const std::string& device_id) {
   AudioInputStream* stream =
-    AudioManagerBase::MakeAudioInputStream(params, device_id);
+      AudioManagerBase::MakeAudioInputStream(params, device_id);
   return stream;
 }
 
 void AudioManagerAndroid::ReleaseOutputStream(AudioOutputStream* stream) {
   AudioManagerBase::ReleaseOutputStream(stream);
   if (!output_stream_count()) {
     UnregisterHeadsetReceiver();
     SetAudioMode(kAudioModeNormal);
   }
 }
@@ skipping 105 matching lines @@
       j_audio_manager_.obj());
 }
 
 int AudioManagerAndroid::GetAudioLowLatencyOutputFrameSize() {
   return Java_AudioManagerAndroid_getAudioLowLatencyOutputFrameSize(
       base::android::AttachCurrentThread(),
       j_audio_manager_.obj());
 }
 
 }  // namespace media