Renderer side audio device change wip...

media/audio/audio_manager_base.cc

Index: media/audio/audio_manager_base.cc
diff --git a/media/audio/audio_manager_base.cc b/media/audio/audio_manager_base.cc
index 86a3db0f611c58bb2339c52ef92c0cd362fae8ed..990c465cc22393eeba42d09c9043136f826aac55 100644
--- a/media/audio/audio_manager_base.cc
+++ b/media/audio/audio_manager_base.cc
@@ -123,6 +123,7 @@ AudioOutputStream* AudioManagerBase::MakeAudioOutputStream(
     NOTIMPLEMENTED();
     return NULL;
 #else
+    LOG(ERROR) << "CREATED VIRTUAL OUTPUT STREAM";
     stream = new VirtualAudioOutputStream(
         params, message_loop_, virtual_audio_input_stream_,
         base::Bind(&AudioManagerBase::ReleaseVirtualOutputStream,
@@ -162,7 +163,9 @@ AudioInputStream* AudioManagerBase::MakeAudioInputStream(
   }
 
   AudioInputStream* stream = NULL;
-  if (params.format() == AudioParameters::AUDIO_VIRTUAL) {
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kForceAudioMirroring) ||
+      params.format() == AudioParameters::AUDIO_VIRTUAL) {
 #if defined(OS_IOS)
     // We do not currently support iOS.
     NOTIMPLEMENTED();
@@ -171,6 +174,8 @@ AudioInputStream* AudioManagerBase::MakeAudioInputStream(
     // TODO(justinlin): Currently, audio mirroring will only work for the first
     // request. Subsequent requests will not get audio.
     if (!virtual_audio_input_stream_) {
+
+      LOG(ERROR) << "CREATED VIRTUAL INPUT STREAM";
       virtual_audio_input_stream_ = new VirtualAudioInputStream(
           params, message_loop_,
           base::Bind(&AudioManagerBase::ReleaseVirtualInputStream,
@@ -405,6 +410,9 @@ AudioParameters AudioManagerBase::GetPreferredLowLatencyOutputStreamParameters(
 #else
   // TODO(dalecurtis): This should include bits per channel and channel layout
   // eventually.
+  // TODO(dalecurtis): GetAudio*() methods should be cached by each platform
+  // specific audio manager to avoid system calls to retrieve the values, the
+  // cache should be updated on device changes.
   return AudioParameters(
       AudioParameters::AUDIO_PCM_LOW_LATENCY, input_params.channel_layout(),
       GetAudioHardwareSampleRate(), 16, GetAudioHardwareBufferSize());