AudioHardwareGetProperty is deprecated in Mac OS X 10.6 ("Snow Leopard")

media/audio/mac/audio_manager_mac.cc

 // Copyright (c) 2009 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 <CoreAudio/AudioHardware.h>
 
 #include "base/at_exit.h"
 #include "media/audio/fake_audio_output_stream.h"
 #include "media/audio/mac/audio_manager_mac.h"
 #include "media/audio/mac/audio_output_mac.h"
 
 bool AudioManagerMac::HasAudioDevices() {
-  AudioDeviceID output_device_id = 0;
-  size_t size = sizeof(output_device_id);
-  OSStatus err = AudioHardwareGetProperty(
-      kAudioHardwarePropertyDefaultOutputDevice, &size, &output_device_id);
-  return ((err == noErr) && (output_device_id > 0));
+  AudioDeviceID output_device_id = kAudioObjectUnknown;
+  AudioObjectPropertyAddress property_address = {
+    kAudioHardwarePropertyDefaultOutputDevice,  // mSelector
+    kAudioObjectPropertyScopeGlobal,            // mScope
+    kAudioObjectPropertyElementMaster           // mElement
+  };
+  size_t output_device_id_size = sizeof(output_device_id);
+  OSStatus err = AudioObjectGetPropertyData(kAudioObjectSystemObject,
+                                            &property_address,
+                                            0,     // inQualifierDataSize
+                                            NULL,  // inQualifierData
+                                            &output_device_id_size,
+                                            &output_device_id);
+  return err == kAudioHardwareNoError &&
+         output_device_id != kAudioObjectUnknown;
 }
 
 AudioOutputStream* AudioManagerMac::MakeAudioStream(Format format, int channels,
                                                     int sample_rate,
                                                     char bits_per_sample) {
   if (format == AUDIO_MOCK)
     return FakeAudioOutputStream::MakeFakeStream();
   else if (format != AUDIO_PCM_LINEAR)
     return NULL;
   return new PCMQueueOutAudioOutputStream(this, channels, sample_rate,
@@ skipping 25 matching lines @@
 }
 
 // By convention, the AudioManager is not thread safe.
 AudioManager* AudioManager::GetAudioManager() {
   if (!g_audio_manager) {
     g_audio_manager = new AudioManagerMac();
     base::AtExitManager::RegisterCallback(&DestroyAudioManagerMac, NULL);
   }
   return g_audio_manager;
 }