Disable low latency audio under remote desktop sessions.

media/audio/win/audio_low_latency_output_win.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/win/audio_low_latency_output_win.h"
 
 #include <Functiondiscoverykeys_devpkey.h>
 
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 117 matching lines @@
 
 bool WASAPIAudioOutputStream::Open() {
   DVLOG(1) << "WASAPIAudioOutputStream::Open()";
   DCHECK_EQ(GetCurrentThreadId(), creating_thread_id_);
   if (opened_)
     return true;
 
   DCHECK(!audio_client_.get());
   DCHECK(!audio_render_client_.get());
 
+  // Don't allow WASAPI streams to be created for remote output devices, this
+  // frequently leads to hangs of the audio thread.  http://crbug.com/422522.
+  if (CoreAudioUtil::IsRemoteOutputDevice(device_id_))
+    return false;
+
   // Will be set to true if we ended up opening the default communications
   // device.
   bool communications_device = false;
 
   // Create an IAudioClient interface for the default rendering IMMDevice.
   ScopedComPtr<IAudioClient> audio_client;
   if (device_id_.empty() ||
       CoreAudioUtil::DeviceIsDefault(eRender, device_role_, device_id_)) {
     audio_client = CoreAudioUtil::CreateDefaultClient(eRender, device_role_);
     communications_device = (device_role_ == eCommunications);
@@ skipping 468 matching lines @@
 
     // Ensure that we don't quit the main thread loop immediately next
     // time Start() is called.
     ResetEvent(stop_render_event_.Get());
   }
 
   source_ = NULL;
 }
 
 }  // namespace media