MuteSource Audio During Full Screen Cast

media/audio/win/core_audio_util_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/core_audio_util_win.h"
 
 #include <devicetopology.h>
 #include <dxdiag.h>
 #include <functiondiscoverykeys_devpkey.h>
 #include <stddef.h>
@@ skipping 729 matching lines @@
 
 HRESULT CoreAudioUtil::GetPreferredAudioParameters(const std::string& device_id,
                                                    bool is_output_device,
                                                    AudioParameters* params) {
   DCHECK(IsSupported());
 
   ScopedComPtr<IMMDevice> device;
   if (device_id == AudioDeviceDescription::kDefaultDeviceId) {
     device = CoreAudioUtil::CreateDefaultDevice(
         is_output_device ? eRender : eCapture, eConsole);
-  } else if (device_id == AudioDeviceDescription::kLoopbackInputDeviceId) {
+  } else if (device_id == AudioDeviceDescription::kLoopbackInputDeviceId ||
+      device_id == AudioDeviceDescription::kLoopbackWithMuteDeviceId) {
     DCHECK(!is_output_device);
     device = CoreAudioUtil::CreateDefaultDevice(eRender, eConsole);
   } else if (device_id == AudioDeviceDescription::kCommunicationsDeviceId) {
     device = CoreAudioUtil::CreateDefaultDevice(
         is_output_device ? eRender : eCapture, eCommunications);
   } else {
     device = CreateDevice(device_id);
   }
 
   if (!device.get()) {
@@ skipping 203 matching lines @@
 
   if (variant.type() == VT_BSTR && variant.ptr()->bstrVal) {
     base::WideToUTF8(variant.ptr()->bstrVal, wcslen(variant.ptr()->bstrVal),
                      driver_version);
   }
 
   return true;
 }
 
 }  // namespace media