bool CCoreAudioStream::SetPhysicalFormat(AudioStreamBasicDescription* pDesc)
{
if (!pDesc || !m_StreamId)
return false;
std::string formatString;
if (!m_OriginalPhysicalFormat.mFormatID)
{
// Store the original format (as we found it) so that it can be restored later
if (!GetPhysicalFormat(&m_OriginalPhysicalFormat))
{
CLog::Log(LOGERROR, "CCoreAudioStream::SetPhysicalFormat: "
"Unable to retrieve current physical format for stream 0x%04x.", (uint)m_StreamId);
return false;
}
}
m_physical_format_event.Reset();
OSStatus ret = AudioStreamSetProperty(m_StreamId,
NULL, 0, kAudioStreamPropertyPhysicalFormat, sizeof(AudioStreamBasicDescription), pDesc);
if (ret)
{
CLog::Log(LOGERROR, "CCoreAudioStream::SetPhysicalFormat: "
"Unable to set physical format for stream 0x%04x. Error = %s",
(uint)m_StreamId, GetError(ret).c_str());
return false;
}
// The AudioStreamSetProperty is not only asynchronious,
// it is also not Atomic, in its behaviour.
// Therefore we check 5 times before we really give up.
// FIXME: failing isn't actually implemented yet.
for(int i = 0; i < 10; ++i)
{
AudioStreamBasicDescription checkPhysicalFormat;
if (!GetPhysicalFormat(&checkPhysicalFormat))
{
CLog::Log(LOGERROR, "CCoreAudioStream::SetPhysicalFormat: "
"Unable to retrieve current physical format for stream 0x%04x.", (uint)m_StreamId);
return false;
}
if (checkPhysicalFormat.mSampleRate == pDesc->mSampleRate &&
checkPhysicalFormat.mFormatID == pDesc->mFormatID &&
checkPhysicalFormat.mFramesPerPacket == pDesc->mFramesPerPacket)
{
// The right format is now active.
CLog::Log(LOGDEBUG, "CCoreAudioStream::SetPhysicalFormat: "
"Physical format for stream 0x%04x. now active (%s)",
(uint)m_StreamId, StreamDescriptionToString(checkPhysicalFormat, formatString));
break;
}
m_physical_format_event.WaitMSec(100);
}
return true;
}
/*****************************************************************************
* AudioStreamChangeFormat: Change i_stream_id to change_format
*****************************************************************************/
int CoreAudioAUHAL::AudioStreamChangeFormat(CoreAudioDeviceParameters *deviceParameters, AudioStreamID i_stream_id, AudioStreamBasicDescription change_format)
{
OSStatus err = noErr;
UInt32 i_param_size = 0;
int i;
CLog::Log(LOGINFO, STREAM_FORMAT_MSG( "setting stream format: ", change_format ));
CSingleLock lock(m_cs); // acquire lock
/* change the format */
err = AudioStreamSetProperty( i_stream_id, 0, 0,
kAudioStreamPropertyPhysicalFormat,
sizeof( AudioStreamBasicDescription ),
&change_format );
if( err != noErr )
{
CLog::Log(LOGERROR, "could not set the stream format: [%4.4s]", (char *)&err );
return false;
}
/* The AudioStreamSetProperty is not only asynchronious (requiring the locks)
* it is also not atomic in its behaviour.
* Therefore we check 5 times before we really give up.*/
for( i = 0; i < 5; i++ )
{
AudioStreamBasicDescription actual_format;
usleep(20);
i_param_size = sizeof( AudioStreamBasicDescription );
err = AudioStreamGetProperty( i_stream_id, 0,
kAudioStreamPropertyPhysicalFormat,
&i_param_size,
&actual_format );
CLog::Log(LOGDEBUG, STREAM_FORMAT_MSG( "actual format in use: ", actual_format ) );
if( actual_format.mSampleRate == change_format.mSampleRate &&
actual_format.mFormatID == change_format.mFormatID &&
actual_format.mFramesPerPacket == change_format.mFramesPerPacket )
{
/* The right format is now active */
break;
}
/* We need to check again */
}
return true;
}
bool CCoreAudioStream::SetPhysicalFormat(AudioStreamBasicDescription* pDesc)
{
if (!pDesc || !m_StreamId)
return false;
if (!m_OriginalPhysicalFormat.mFormatID)
{
if (!GetPhysicalFormat(m_StreamId, &m_OriginalPhysicalFormat)) // Store the original format (as we found it) so that it can be restored later
{
CLog::Log(LOGERROR, "CCoreAudioStream::SetPhysicalFormat: Unable to retrieve current physical format for stream 0x%04x.", m_StreamId);
return false;
}
}
OSStatus ret = AudioStreamSetProperty(m_StreamId, NULL, 0, kAudioStreamPropertyPhysicalFormat, sizeof(AudioStreamBasicDescription), pDesc);
if (ret)
{
CLog::Log(LOGERROR, "CCoreAudioStream::SetVirtualFormat: Unable to set physical format for stream 0x%04x. Error = 0x%08x (%4.4s)", m_StreamId, ret, CONVERT_OSSTATUS(ret));
return false;
}
return true;
}
void CCoreAudioHardware::ResetStream(AudioStreamID stream)
{
// Find the streams current physical format
AudioStreamBasicDescription currentFormat;
UInt32 paramSize = sizeof(currentFormat);
AudioStreamGetProperty(stream, 0, kAudioStreamPropertyPhysicalFormat,
¶mSize, ¤tFormat);
// If it's currently AC-3/SPDIF then reset it to some mixable format
if (currentFormat.mFormatID == 'IAC3' ||
currentFormat.mFormatID == kAudioFormat60958AC3)
{
AudioStreamBasicDescription *formats = CCoreAudioHardware::FormatsList(stream);
bool streamReset = false;
if (!formats)
return;
for (int i = 0; !streamReset && formats[i].mFormatID != 0; i++)
{
if (formats[i].mFormatID == kAudioFormatLinearPCM)
{
OSStatus ret = AudioStreamSetProperty(stream, NULL, 0, kAudioStreamPropertyPhysicalFormat, sizeof(formats[i]), &(formats[i]));
if (ret != noErr)
{
CLog::Log(LOGDEBUG, "CCoreAudioHardware::ResetStream: "
"Unable to retrieve the list of available devices. Error = %s", GetError(ret).c_str());
continue;
}
else
{
streamReset = true;
Sleep(10);
}
}
}
free(formats);
}
}
void PlexAudioDevice::reset()
{
OSStatus err = noErr;
UInt32 paramSize = 0;
AudioStreamBasicDescription deviceFormat;
// Set up the basic default format.
deviceFormat.mSampleRate = 48000.0;
deviceFormat.mFormatID = kAudioFormatLinearPCM;
deviceFormat.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked;
deviceFormat.mBitsPerChannel = 16;
deviceFormat.mChannelsPerFrame = 2;
deviceFormat.mFramesPerPacket = 1;
deviceFormat.mBytesPerFrame = 4;
deviceFormat.mBytesPerPacket = 4;
deviceFormat.mReserved = 0;
// Retrieve all the output streams.
SAFELY(AudioDeviceGetPropertyInfo(m_deviceID, 0, FALSE, kAudioDevicePropertyStreams, ¶mSize, NULL));
if (err == noErr)
{
int numStreams = paramSize / sizeof(AudioStreamID);
AudioStreamID* pStreams = (AudioStreamID *)malloc(paramSize);
SAFELY(AudioDeviceGetProperty(m_deviceID, 0, FALSE, kAudioDevicePropertyStreams, ¶mSize, pStreams));
if (err == noErr)
{
for (int i=0; i<numStreams; i++)
{
// Change the format.
SAFELY(AudioStreamSetProperty(pStreams[i], 0, 0, kAudioStreamPropertyPhysicalFormat, sizeof(AudioStreamBasicDescription), &deviceFormat));
}
}
free(pStreams);
}
}
void CAAudioHardwareStream::SetPropertyData(UInt32 inChannel, AudioHardwarePropertyID inPropertyID, UInt32 inDataSize, const void* inData, const AudioTimeStamp* inWhen)
{
OSStatus theError = AudioStreamSetProperty(GetAudioStreamID(), inWhen, inChannel, inPropertyID, inDataSize, inData);
ThrowIfError(theError, CAException(theError), "CAAudioHardwareStream::SetPropertyData: got an error setting the value of a property");
}
