Adds thread safety annotations to the AudioDeviceBuffer class

webrtc/modules/audio_device/mac/audio_device_mac.cc

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 1163 matching lines @@
   if (_outStreamFormat.mChannelsPerFrame < 2) {
     // Disable stereo playout when we only have one channel on the device.
     _playChannels = 1;
     WEBRTC_TRACE(kTraceInfo, kTraceAudioDevice, _id,
                  "Stereo playout unavailable on this device");
   }
   WEBRTC_CA_RETURN_ON_ERR(SetDesiredPlayoutFormat());
 
   // Listen for format changes.
   propertyAddress.mSelector = kAudioDevicePropertyStreamFormat;
-  WEBRTC_CA_RETURN_ON_ERR(AudioObjectAddPropertyListener(
+  WEBRTC_CA_LOG_WARN(AudioObjectAddPropertyListener(
       _outputDeviceID, &propertyAddress, &objectListenerProc, this));
 
   // Listen for processor overloads.
   propertyAddress.mSelector = kAudioDeviceProcessorOverload;
   WEBRTC_CA_LOG_WARN(AudioObjectAddPropertyListener(
       _outputDeviceID, &propertyAddress, &objectListenerProc, this));
 
   if (_twoDevices || !_recIsInitialized) {
     WEBRTC_CA_RETURN_ON_ERR(AudioDeviceCreateIOProcID(
         _outputDeviceID, deviceIOProc, this, &_deviceIOProcID));
@@ skipping 177 matching lines @@
   size = sizeof(UInt32);
   latency = 0;
   WEBRTC_CA_RETURN_ON_ERR(AudioObjectGetPropertyData(
       _inputDeviceID, &propertyAddress, 0, NULL, &size, &latency));
   _captureLatencyUs +=
       (UInt32)((1.0e6 * latency) / _inStreamFormat.mSampleRate);
 
   // Listen for format changes
   // TODO(xians): should we be using kAudioDevicePropertyDeviceHasChanged?
   propertyAddress.mSelector = kAudioDevicePropertyStreamFormat;
-  WEBRTC_CA_RETURN_ON_ERR(AudioObjectAddPropertyListener(
+  WEBRTC_CA_LOG_WARN(AudioObjectAddPropertyListener(
       _inputDeviceID, &propertyAddress, &objectListenerProc, this));
 
   // Listen for processor overloads
   propertyAddress.mSelector = kAudioDeviceProcessorOverload;
   WEBRTC_CA_LOG_WARN(AudioObjectAddPropertyListener(
       _inputDeviceID, &propertyAddress, &objectListenerProc, this));
 
   if (_twoDevices) {
     WEBRTC_CA_RETURN_ON_ERR(AudioDeviceCreateIOProcID(
         _inputDeviceID, inDeviceIOProc, this, &_inDeviceIOProcID));
@@ skipping 1376 matching lines @@
     bool keyState =
         CGEventSourceKeyState(kCGEventSourceStateHIDSystemState, key_index);
     // A false -> true change in keymap means a key is pressed.
     key_down |= (keyState && !prev_key_state_[key_index]);
     // Save current state.
     prev_key_state_[key_index] = keyState;
   }
   return key_down;
 }
 }  // namespace webrtc