bool CCoreAudioDevice::SetMixingSupport(UInt32 mix)
{
if (!m_DeviceId)
return false;
if (!GetMixingSupport())
return false;
int restore = -1;
if (m_MixerRestore == -1)
{
// This is our first change to this setting. Store the original setting for restore
restore = (GetMixingSupport() ? 1 : 0);
}
AudioObjectPropertyAddress propertyAddress;
propertyAddress.mScope = kAudioDevicePropertyScopeOutput;
propertyAddress.mElement = 0;
propertyAddress.mSelector = kAudioDevicePropertySupportsMixing;
UInt32 mixEnable = mix ? 1 : 0;
OSStatus ret = AudioObjectSetPropertyData(m_DeviceId, &propertyAddress, 0, NULL, sizeof(mixEnable), &mixEnable);
if (ret != noErr)
{
CLog::Log(LOGERROR, "CCoreAudioDevice::SetMixingSupport: "
"Unable to set MixingSupport to %s. Error = %s", mix ? "'On'" : "'Off'", GetError(ret).c_str());
return false;
}
if (m_MixerRestore == -1)
m_MixerRestore = restore;
return true;
}
bool CCoreAudioDevice::SetMixingSupport(bool mix)
{
if (!m_DeviceId)
return false;
int restore = -1;
if (m_MixerRestore == -1) // This is our first change to this setting. Store the original setting for restore
restore = (GetMixingSupport() ? 1 : 0);
UInt32 mixEnable = mix ? 1 : 0;
CLog::Log(LOGDEBUG, "CCoreAudioDevice::SetMixingSupport: %sabling mixing for device 0x%04x",mix ? "En" : "Dis", m_DeviceId);
OSStatus ret = AudioDeviceSetProperty(m_DeviceId, NULL, 0, false, kAudioDevicePropertySupportsMixing, sizeof(mixEnable), &mixEnable);
if (ret)
{
CLog::Log(LOGERROR, "CCoreAudioDevice::SetMixingSupport: Unable to set MixingSupport to %s. Error = 0x%08x (%4.4s)", mix ? "'On'" : "'Off'", ret, CONVERT_OSSTATUS(ret));
return false;
}
if (m_MixerRestore == -1)
m_MixerRestore = restore;
return true;
}
