Add performance tracing to AudioDevice inits.

webrtc/modules/audio_device/audio_device_impl.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.
  */
 
 #include "webrtc/base/refcount.h"
+#include "webrtc/base/trace_event.h"
 #include "webrtc/common_audio/signal_processing/include/signal_processing_library.h"
 #include "webrtc/modules/audio_device/audio_device_config.h"
 #include "webrtc/modules/audio_device/audio_device_impl.h"
 #include "webrtc/system_wrappers/include/tick_util.h"
 
 #include <assert.h>
 #include <string.h>
 
 #if defined(_WIN32)
     #include "audio_device_wave_win.h"
@@ skipping 1425 matching lines @@
     _audioDeviceBuffer.InitPlayout();
     return (_ptrAudioDevice->InitPlayout());
 }
 
 // ----------------------------------------------------------------------------
 //  InitRecording
 // ----------------------------------------------------------------------------
 
 int32_t AudioDeviceModuleImpl::InitRecording()
 {
+    TRACE_EVENT0("webrtc", "AudioDeviceModuleImpl::InitRecording");
     CHECK_INITIALIZED();
     _audioDeviceBuffer.InitRecording();
     return (_ptrAudioDevice->InitRecording());
 }
 
 // ----------------------------------------------------------------------------
 //  PlayoutIsInitialized
 // ----------------------------------------------------------------------------
 
 bool AudioDeviceModuleImpl::PlayoutIsInitialized() const
@@ skipping 41 matching lines @@
     CHECK_INITIALIZED_BOOL();
     return (_ptrAudioDevice->Playing());
 }
 
 // ----------------------------------------------------------------------------
 //  StartRecording
 // ----------------------------------------------------------------------------
 
 int32_t AudioDeviceModuleImpl::StartRecording()
 {
+    TRACE_EVENT0("webrtc", "AudioDeviceModuleImpl::StartRecording");
     CHECK_INITIALIZED();
     return (_ptrAudioDevice->StartRecording());
 }
 // ----------------------------------------------------------------------------
 //  StopRecording
 // ----------------------------------------------------------------------------
 
 int32_t AudioDeviceModuleImpl::StopRecording()
 {
     CHECK_INITIALIZED();
@@ skipping 399 matching lines @@
 // ----------------------------------------------------------------------------
 //  PlatformAudioLayer
 // ----------------------------------------------------------------------------
 
 AudioDeviceModule::AudioLayer AudioDeviceModuleImpl::PlatformAudioLayer() const
 {
     return _platformAudioLayer;
 }
 
 }  // namespace webrtc