bool CCoreAudioAEHALIOS::InitializePCMEncoded(ICoreAudioSource *pSource, AEAudioFormat &format)
{
if (!InitializePCM(pSource, format, false))
return false;
return true;
}
bool CCoreAudioAEHALIOS::Initialize(ICoreAudioSource *ae, bool passThrough, AEAudioFormat &format, AEDataFormat rawDataFormat, std::string &device, float initVolume)
{
m_ae = (CCoreAudioAE *)ae;
if (!m_ae)
return false;
m_initformat = format;
m_Passthrough = passThrough;
m_encoded = false;
m_OutputBufferIndex = 0;
m_rawDataFormat = rawDataFormat;
m_initVolume = initVolume;
if (format.m_channelLayout.Count() == 0)
{
CLog::Log(LOGERROR, "CCoreAudioAEHALIOS::Initialize - Unable to open the requested channel layout");
return false;
}
if (device.find("CoreAudio:"))
device.erase(0, strlen("CoreAudio:"));
// If this is a passthrough (AC3/DTS) stream, attempt to handle it natively
if (m_Passthrough)
{
m_encoded = false;
}
// If this is a PCM stream, or we failed to handle a passthrough stream natively,
// prepare the standard interleaved PCM interface
if (!m_encoded)
{
// If we are here and this is a passthrough stream, native handling failed.
// Try to handle it as IEC61937 data over straight PCM (DD-Wav)
bool configured = false;
if (m_Passthrough)
{
CLog::Log(LOGDEBUG, "CCoreAudioAEHALIOS::Initialize: No suitable AC3 output format found. Attempting DD-Wav.");
configured = InitializePCMEncoded(ae, format);
}
else
{
// Standard PCM data
configured = InitializePCM(ae, format, true);
}
if (!configured) // No suitable output format was able to be configured
return false;
}
if (m_audioGraph)
m_audioGraph->ShowGraph();
m_Initialized = true;
return true;
}
bool CCoreAudioAEHALOSX::InitializePCMEncoded(ICoreAudioSource *pSource, AEAudioFormat &format, AudioDeviceID outputDevice)
{
// Prevent any other application from using this device.
m_AudioDevice->SetHogStatus(true);
// Try to disable mixing support. Effectiveness depends on the device.
m_AudioDevice->SetMixingSupport(false);
// Set the Sample Rate as defined by the spec.
m_AudioDevice->SetNominalSampleRate((float)format.m_sampleRate);
if (!InitializePCM(pSource, format, false, outputDevice))
return false;
return true;
}
bool CCoreAudioAEHALOSX::Initialize(ICoreAudioSource *ae, bool passThrough, AEAudioFormat &format, AEDataFormat rawDataFormat, std::string &device, float initVolume)
{
// Reset all the devices to a default 'non-hog' and mixable format.
// If we don't do this we may be unable to find the Default Output device.
// (e.g. if we crashed last time leaving it stuck in AC-3 mode)
CCoreAudioHardware::ResetAudioDevices();
m_ae = (CCoreAudioAE*)ae;
if (!m_ae)
return false;
m_initformat = format;
m_rawDataFormat = rawDataFormat;
m_Passthrough = passThrough;
m_encoded = false;
m_OutputBufferIndex = 0;
m_initVolume = initVolume;
if (format.m_channelLayout.Count() == 0)
{
CLog::Log(LOGERROR, "CCoreAudioAEHALOSX::Initialize - "
"Unable to open the requested channel layout");
return false;
}
if (device.find("CoreAudio:") != std::string::npos)
device.erase(0, strlen("CoreAudio:"));
AudioDeviceID outputDevice = CCoreAudioHardware::FindAudioDevice(device);
if (!outputDevice)
{
// Fall back to the default device if no match is found
CLog::Log(LOGWARNING, "CCoreAudioAEHALOSX::Initialize: "
"Unable to locate configured device, falling-back to the system default.");
outputDevice = CCoreAudioHardware::GetDefaultOutputDevice();
if (!outputDevice) // Not a lot to be done with no device. TODO: Should we just grab the first existing device?
return false;
}
// Attach our output object to the device
m_AudioDevice->Open(outputDevice);
m_AudioDevice->SetHogStatus(false);
m_AudioDevice->SetMixingSupport(true);
// If this is a passthrough (AC3/DTS) stream, attempt to handle it natively
if (m_Passthrough)
m_encoded = InitializeEncoded(outputDevice, format);
// If this is a PCM stream, or we failed to handle a passthrough stream natively,
// prepare the standard interleaved PCM interface
if (!m_encoded)
{
// If we are here and this is a passthrough stream, native handling failed.
// Try to handle it as IEC61937 data over straight PCM (DD-Wav)
bool configured = false;
if (m_Passthrough)
{
CLog::Log(LOGDEBUG, "CCoreAudioAEHALOSX::Initialize: "
"No suitable AC3 output format found. Attempting DD-Wav.");
configured = InitializePCMEncoded(ae, format, outputDevice);
}
else
{
// Standard PCM data
configured = InitializePCM(ae, format, true, outputDevice);
}
// No suitable output format was able to be configured
if (!configured)
return false;
}
m_Initialized = true;
return true;
}