+#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
+/* The APIs used here only become available from 10.6 */
+
+static OSStatus coreaudio_get_voice(AudioDeviceID *id)
+{
+ UInt32 size = sizeof(*id);
+ AudioObjectPropertyAddress addr = {
+ kAudioHardwarePropertyDefaultOutputDevice,
+ kAudioObjectPropertyScopeGlobal,
+ kAudioObjectPropertyElementMaster
+ };
+
+ return AudioObjectGetPropertyData(kAudioObjectSystemObject,
+ &addr,
+ 0,
+ NULL,
+ &size,
+ id);
+}
+
+static OSStatus coreaudio_get_framesizerange(AudioDeviceID id,
+ AudioValueRange *framerange)
+{
+ UInt32 size = sizeof(*framerange);
+ AudioObjectPropertyAddress addr = {
+ kAudioDevicePropertyBufferFrameSizeRange,
+ kAudioDevicePropertyScopeOutput,
+ kAudioObjectPropertyElementMaster
+ };
+
+ return AudioObjectGetPropertyData(id,
+ &addr,
+ 0,
+ NULL,
+ &size,
+ framerange);
+}
+
+static OSStatus coreaudio_get_framesize(AudioDeviceID id, UInt32 *framesize)
+{
+ UInt32 size = sizeof(*framesize);
+ AudioObjectPropertyAddress addr = {
+ kAudioDevicePropertyBufferFrameSize,
+ kAudioDevicePropertyScopeOutput,
+ kAudioObjectPropertyElementMaster
+ };
+
+ return AudioObjectGetPropertyData(id,
+ &addr,
+ 0,
+ NULL,
+ &size,
+ framesize);
+}
+
+static OSStatus coreaudio_set_framesize(AudioDeviceID id, UInt32 *framesize)
+{
+ UInt32 size = sizeof(*framesize);
+ AudioObjectPropertyAddress addr = {
+ kAudioDevicePropertyBufferFrameSize,
+ kAudioDevicePropertyScopeOutput,
+ kAudioObjectPropertyElementMaster
+ };
+
+ return AudioObjectSetPropertyData(id,
+ &addr,
+ 0,
+ NULL,
+ size,
+ framesize);
+}
+
+static OSStatus coreaudio_get_streamformat(AudioDeviceID id,
+ AudioStreamBasicDescription *d)
+{
+ UInt32 size = sizeof(*d);
+ AudioObjectPropertyAddress addr = {
+ kAudioDevicePropertyStreamFormat,
+ kAudioDevicePropertyScopeOutput,
+ kAudioObjectPropertyElementMaster
+ };
+
+ return AudioObjectGetPropertyData(id,
+ &addr,
+ 0,
+ NULL,
+ &size,
+ d);
+}
+
+static OSStatus coreaudio_set_streamformat(AudioDeviceID id,
+ AudioStreamBasicDescription *d)
+{
+ UInt32 size = sizeof(*d);
+ AudioObjectPropertyAddress addr = {
+ kAudioDevicePropertyStreamFormat,
+ kAudioDevicePropertyScopeOutput,
+ kAudioObjectPropertyElementMaster
+ };
+
+ return AudioObjectSetPropertyData(id,
+ &addr,
+ 0,
+ NULL,
+ size,
+ d);
+}
+
+static OSStatus coreaudio_get_isrunning(AudioDeviceID id, UInt32 *result)
+{
+ UInt32 size = sizeof(*result);
+ AudioObjectPropertyAddress addr = {
+ kAudioDevicePropertyDeviceIsRunning,
+ kAudioDevicePropertyScopeOutput,
+ kAudioObjectPropertyElementMaster
+ };
+
+ return AudioObjectGetPropertyData(id,
+ &addr,
+ 0,
+ NULL,
+ &size,
+ result);
+}
+#else
+/* Legacy versions of functions using deprecated APIs */
+
+static OSStatus coreaudio_get_voice(AudioDeviceID *id)
+{
+ UInt32 size = sizeof(*id);
+
+ return AudioHardwareGetProperty(
+ kAudioHardwarePropertyDefaultOutputDevice,
+ &size,
+ id);
+}
+
+static OSStatus coreaudio_get_framesizerange(AudioDeviceID id,
+ AudioValueRange *framerange)
+{
+ UInt32 size = sizeof(*framerange);
+
+ return AudioDeviceGetProperty(
+ id,
+ 0,
+ 0,
+ kAudioDevicePropertyBufferFrameSizeRange,
+ &size,
+ framerange);
+}
+
+static OSStatus coreaudio_get_framesize(AudioDeviceID id, UInt32 *framesize)
+{
+ UInt32 size = sizeof(*framesize);
+
+ return AudioDeviceGetProperty(
+ id,
+ 0,
+ false,
+ kAudioDevicePropertyBufferFrameSize,
+ &size,
+ framesize);
+}
+
+static OSStatus coreaudio_set_framesize(AudioDeviceID id, UInt32 *framesize)
+{
+ UInt32 size = sizeof(*framesize);
+
+ return AudioDeviceSetProperty(
+ id,
+ NULL,
+ 0,
+ false,
+ kAudioDevicePropertyBufferFrameSize,
+ size,
+ framesize);
+}
+
+static OSStatus coreaudio_get_streamformat(AudioDeviceID id,
+ AudioStreamBasicDescription *d)
+{
+ UInt32 size = sizeof(*d);
+
+ return AudioDeviceGetProperty(
+ id,
+ 0,
+ false,
+ kAudioDevicePropertyStreamFormat,
+ &size,
+ d);
+}
+
+static OSStatus coreaudio_set_streamformat(AudioDeviceID id,
+ AudioStreamBasicDescription *d)
+{
+ UInt32 size = sizeof(*d);
+
+ return AudioDeviceSetProperty(
+ id,
+ 0,
+ 0,
+ 0,
+ kAudioDevicePropertyStreamFormat,
+ size,
+ d);
+}
+
+static OSStatus coreaudio_get_isrunning(AudioDeviceID id, UInt32 *result)
+{
+ UInt32 size = sizeof(*result);
+
+ return AudioDeviceGetProperty(
+ id,
+ 0,
+ 0,
+ kAudioDevicePropertyDeviceIsRunning,
+ &size,
+ result);
+}
+#endif
+