IOReturn AREngine::performFormatChange(IOAudioStream* inStream, const IOAudioStreamFormat* inNewFormat, const IOAudioSampleRate* inNewSampleRate)
{
// set up the time stamp generator
if(inNewSampleRate != NULL)
{
mTimeStampGenerator.SetSampleRate(inNewSampleRate->whole);
}
// When the format of a stream changes, we have to synch the corresponding stream in the other direction
// so that the reflection works without munging channels.
if(inNewFormat != NULL)
{
// we're going to change a lot of stuff, including controls
beginConfigurationChange();
// get the starting channel for the stream
UInt32 theStartingChannel = inStream->getStartingChannelID();
// get the direction for the stream
IOAudioStreamDirection theDirection = inStream->getDirection();
// flip the direction
theDirection = (theDirection == kIOAudioStreamDirectionOutput) ? kIOAudioStreamDirectionInput : kIOAudioStreamDirectionOutput;
// look up the stream in the opposite direction
IOAudioStream* theOppositeStream = getAudioStream(theDirection, theStartingChannel);
// tell the opposite stream to change format too
if(theOppositeStream != NULL)
{
theOppositeStream->setFormat(inNewFormat, false);
}
// we're done changing stuff
completeConfigurationChange();
}
return kIOReturnSuccess;
}
IOAudioStream *kXAudioEngine::createNewAudioStream(int chn,IOAudioStreamDirection direction, UInt32 sampleBufferSize)
{
IOAudioStream *audioStream = new IOAudioStream;
if (audioStream)
{
if (!audioStream->initWithAudioEngine(this, direction, 1))
{
audioStream->release();
} else {
IOAudioSampleRate rate;
void *sampleBuffer=NULL;
IOAudioStreamFormat format = {
1, // num channels
kIOAudioStreamSampleFormatLinearPCM, // sample format
kIOAudioStreamNumericRepresentationSignedInt, // numeric format
bps, // bit depth
bps, // bit width
kIOAudioStreamAlignmentHighByte, // high byte aligned - unused because bit depth == bit width
kIOAudioStreamByteOrderLittleEndian, // little endian
true, // format is mixable
0 // driver-defined tag - unused by this driver
};
kx_voice_buffer buffer;
bzero(&buffer, sizeof(buffer));
buffer.desc = my_alloc_contiguous(sampleBufferSize, &(buffer.addr), &(buffer.physical));
if (!buffer.desc)
return NULL;
buffer.size=sampleBufferSize;
buffer.that=this;
buffer.notify=-n_frames;
sampleBuffer=buffer.addr;
// allocate memory:
if(direction==kIOAudioStreamDirectionOutput)
{
int need_notifier=VOICE_OPEN_NOTIMER;
if(chn==0) // first voice?
need_notifier|=VOICE_OPEN_NOTIFY; // half/full buffer
int mapping[]=
{ //2,3,4,5,6,7,8,9 - kX: front, rear, center+lfe, back
//1,2,3,4,5,6,7,8 - OSX: front, center+lfe, rear, back
2,3,6,7,4,5,8,9 };
// wave 2/3 - front
// wave 6/7 - center+lfe
// wave 4/5 - rear
// 8/9 - rear center/etc.
int i=kx_allocate_multichannel(hw,bps,sampling_rate,need_notifier,&buffer,DEF_ASIO_ROUTING+mapping[chn]); // start with 2/3
if(i>=0)
{
hw->voicetable[i].asio_id=this;
hw->voicetable[i].asio_mdl=0;
hw->voicetable[i].asio_user_addr=0;
hw->voicetable[i].asio_kernel_addr=0;
hw->voicetable[i].asio_channel=chn;
if(chn==0) // first?
{
hw->asio_notification_krnl.n_voice=i;
hw->asio_notification_krnl.semi_buff=(hw->voicetable[i].param.endloop-hw->voicetable[i].param.startloop)/2;
}
}
}
else
if(direction==kIOAudioStreamDirectionInput)
{
format.fNumChannels = 8;
hw->mtr_buffer.desc = buffer.desc;
hw->mtr_buffer.addr = buffer.addr;
hw->mtr_buffer.size = buffer.size;
hw->mtr_buffer.dma_handle = buffer.physical;
//kx_writeptr(hw,FXIDX,0,0);
//debug("createNewAudioStream FXBA:\n");
//kx_writeptr_prof(hw, FXBA, 0, hw->mtr_buffer.dma_handle);
kx_writeptr(hw, FXBA, 0, hw->mtr_buffer.dma_handle);
dword ch = (1 << (format.fNumChannels * 2)) - 1; // 24bit needs 2 physical channels
debug("createNewAudioStream FXWCH/FXWC_K1: %x\n", ch);
if(hw->is_10k2)
{
kx_writeptr(hw,FXWCL, 0, 0);
kx_writeptr(hw,FXWCH, 0, ch);
}
else
kx_writeptr(hw,FXWC_K1, 0, ch << 16);
}
// As part of creating a new IOAudioStream, its sample buffer needs to be set
// It will automatically create a mix buffer should it be needed
if(sampleBuffer && sampleBufferSize)
audioStream->setSampleBuffer(sampleBuffer, sampleBufferSize);
// This device only allows a single format and a choice of 2 different sample rates
rate.fraction = 0;
rate.whole = sampling_rate;
audioStream->addAvailableFormat(&format, &rate, &rate);
// Finally, the IOAudioStream's current format needs to be indicated
audioStream->setFormat(&format);
}
}
return audioStream;
}
bool AREngine::CreateStreams(IOAudioSampleRate* outInitialSampleRate, UInt32* outNumberChannels)
{
// set the return values
bool theAnswer = true;
*outNumberChannels = 0;
// set up some local variables
OSArray* theFormatArray = NULL;
OSArray* theSampleRateArray = NULL;
OSString* theOSString = NULL;
UInt32 theNumberStreams = NUM_STREAMS;
OSNumber* theOSNumber = NULL;
// get the array of formats
theFormatArray = OSDynamicCast(OSArray, getProperty(FORMATS_KEY));
FailIfNULLWithAction(theFormatArray, theAnswer = false, Done, "AREngine::CreateStreams: Couldn't get the format array");
// get the array of sample rates
theSampleRateArray = OSDynamicCast(OSArray, getProperty(SAMPLE_RATES_KEY));
FailIfNULLWithAction(theSampleRateArray, theAnswer = false, Done, "AREngine::CreateStreams: Couldn't get the sample rate array");
// get the description
theOSString = OSDynamicCast(OSString, getProperty(DESCRIPTION_KEY));
if(theOSString != NULL)
{
setDescription(theOSString->getCStringNoCopy());
}
// get the number of streams
theOSNumber = OSDynamicCast(OSNumber, getProperty(NUM_STREAMS_KEY));
if(theOSNumber != NULL)
{
theNumberStreams = theOSNumber->unsigned32BitValue();
}
// make the streams
for(UInt32 theStreamNumber = 0; theStreamNumber < theNumberStreams; ++theStreamNumber)
{
// initialize some local variables
bool theResult = false;
UInt32 theMaxBitWidth = 0;
UInt32 theMaxNumberChannels = 0;
IOAudioStream* theInputStream = NULL;
IOAudioStream* theOutputStream = NULL;
OSCollectionIterator* theFormatIterator = NULL;
OSCollectionIterator* theSampleRateIterator = NULL;
OSDictionary* theFormatDictionary = NULL;
IOAudioSampleRate theSampleRate = { 0, 0 };
IOAudioStreamFormat theInitialFormat;
bool theInitialFormatSet = false;
char theInputStreamName[32];
char theOutputStreamName[32];
UInt32 theStreamBufferSize = 0;
// allocate and initialize the input stream
if(theNumberStreams > 1)
{
snprintf(theInputStreamName, 32, "Input Stream #%ld", theStreamNumber + 1);
}
else
{
snprintf(theInputStreamName, 32, "Input Stream");
}
theInputStream = new IOAudioStream;
FailIfNULLWithAction(theInputStream, theAnswer = false, Error, "AREngine::CreateStreams: couldn't create the input stream");
theResult = theInputStream->initWithAudioEngine(this, kIOAudioStreamDirectionInput, *outNumberChannels + 1, theInputStreamName);
FailIfWithAction(!theResult, theAnswer = false, Error, "AREngine::CreateStreams: couldn't initialize the input stream");
// allocate and initialize the output stream
if(theNumberStreams > 1)
{
snprintf(theOutputStreamName, 32, "Output Stream #%ld", theStreamNumber + 1);
}
else
{
snprintf(theOutputStreamName, 32, "Output Stream");
}
theOutputStream = new IOAudioStream;
FailIfNULLWithAction(theOutputStream, theAnswer = false, Error, "AREngine::CreateStreams: couldn't create the output stream");
theResult = theOutputStream->initWithAudioEngine(this, kIOAudioStreamDirectionOutput, *outNumberChannels + 1, theOutputStreamName);
FailIfWithAction(!theResult, theAnswer = false, Error, "AREngine::CreateStreams: couldn't initialize the output stream");
// make an iterator for the format array
theFormatIterator = OSCollectionIterator::withCollection(theFormatArray);
FailIfNULLWithAction(theFormatIterator, theAnswer = false, Error, "AREngine::CreateStreams: couldn't create the format iterator");
// make an iterator for the sample rate array
theSampleRateIterator = OSCollectionIterator::withCollection(theSampleRateArray);
FailIfNULLWithAction(theSampleRateIterator, theAnswer = false, Error, "AREngine::CreateStreams: couldn't create the sample rate iterator");
// iterate through the formats
theFormatIterator->reset();
theFormatDictionary = (OSDictionary*)theFormatIterator->getNextObject();
while(theFormatDictionary != NULL)
{
// make sure we have a dictionary
if(OSDynamicCast(OSDictionary, theFormatDictionary) != NULL)
{
// convert the dictionary into something we can deal with
IOAudioStreamFormat theFormat;
FailIfNULLWithAction(IOAudioStream::createFormatFromDictionary(theFormatDictionary, &theFormat), theAnswer = false, Error, "AREngine::CreateStreams: couldn't make a format out of the dictionary");
// make sure the initial format is set
if(!theInitialFormatSet)
{
theInitialFormat = theFormat;
}
// iterate through the sample rates
theSampleRateIterator->reset();
theOSNumber = (OSNumber*)theSampleRateIterator->getNextObject();
while(theOSNumber != NULL)
{
// make sure we have a number
if(OSDynamicCast(OSNumber, theOSNumber) != NULL)
{
// get the sample rate
theSampleRate.whole = theOSNumber->unsigned32BitValue();
// make sure the initial sample rate is set
if(outInitialSampleRate->whole == 0)
{
outInitialSampleRate->whole = theSampleRate.whole;
}
// add the format to the input stream
theInputStream->addAvailableFormat(&theFormat, &theSampleRate, &theSampleRate);
// add the format to the output stream
theOutputStream->addAvailableFormat(&theFormat, &theSampleRate, &theSampleRate);
// track a few things
theMaxNumberChannels = (theFormat.fNumChannels > theMaxNumberChannels) ? theFormat.fNumChannels : theMaxNumberChannels;
theMaxBitWidth = (theFormat.fBitWidth > theMaxBitWidth) ? theFormat.fBitWidth : theMaxBitWidth;
}
// go to the next sample rate
theOSNumber = (OSNumber*)theSampleRateIterator->getNextObject();
}
}
// go to the next format
theFormatDictionary = (OSDictionary*)theFormatIterator->getNextObject();
}
// calculate the size of the stream buffer
theStreamBufferSize = mBlockSize * mNumberBlocks * theMaxNumberChannels * theMaxBitWidth / 8;
// allocate the buffers if necessary
if(mOutputBuffer == NULL)
{
// calculate the size
mOutputBufferSize = theStreamBufferSize * theNumberStreams;
// allocate the output buffer
mOutputBuffer = (void*)IOMallocAligned(mOutputBufferSize, PAGE_SIZE);
FailIfNULLWithAction(mOutputBuffer, theAnswer = false, Error, "AREngine::CreateStreams: couldn't allocate the output buffer");
// the input size is the same as the output size
mInputBufferSize = mOutputBufferSize;
// allocate the input buffer
mInputBuffer = mOutputBuffer;
}
// set some info about the stream
theInputStream->setTerminalType(INPUT_UNDEFINED);
theOutputStream->setTerminalType(OUTPUT_UNDEFINED);
// set the initial stream formats
theInputStream->setFormat(&theInitialFormat, false);
theOutputStream->setFormat(&theInitialFormat, false);
// set the data buffer for the streams
theInputStream->setSampleBuffer(&((UInt8*)mInputBuffer)[theStreamBufferSize * theStreamNumber], theStreamBufferSize);
theOutputStream->setSampleBuffer(&((UInt8*)mOutputBuffer)[theStreamBufferSize * theStreamNumber], theStreamBufferSize);
// add the streams to the engine
addAudioStream(theInputStream);
theInputStream->release();
theInputStream = NULL;
addAudioStream(theOutputStream);
theOutputStream->release();
theOutputStream = NULL;
theFormatIterator->release();
theFormatIterator = NULL;
theSampleRateIterator->release();
theSampleRateIterator = NULL;
*outNumberChannels += theMaxNumberChannels;
continue;
Error:
if(theInputStream)
{
theInputStream->release();
}
if(theOutputStream)
{
theOutputStream->release();
}
if(theFormatIterator)
{
theFormatIterator->release();
}
if(theSampleRateIterator)
{
theSampleRateIterator->release();
}
goto Done;
}
Done:
return theAnswer;
}
bool PhantomAudioEngine::createAudioStreams(IOAudioSampleRate *initialSampleRate)
{
bool result = false;
OSNumber *number;
UInt32 numStreams, streamNum;
OSArray *formatArray, *sampleRateArray;
UInt32 startingChannelID = 1;
IOAudioControl *control;
OSString *desc;
OSBoolean *boolean;
bool separateStreamBuffers = FALSE, separateInputBuffers = FALSE;
desc = OSDynamicCast(OSString, getProperty(DESCRIPTION_KEY));
if (desc) {
setDescription(desc->getCStringNoCopy());
}
number = OSDynamicCast(OSNumber, getProperty(NUM_STREAMS_KEY));
if (number) {
numStreams = number->unsigned32BitValue();
} else {
numStreams = NUM_STREAMS;
}
formatArray = OSDynamicCast(OSArray, getProperty(FORMATS_KEY));
if (formatArray == NULL) {
goto Done;
}
sampleRateArray = OSDynamicCast(OSArray, getProperty(SAMPLE_RATES_KEY));
if (sampleRateArray == NULL) {
goto Done;
}
boolean = OSDynamicCast(OSBoolean, getProperty(SEPARATE_STREAM_BUFFERS_KEY));
if (boolean != NULL) {
separateStreamBuffers = boolean->getValue();
}
boolean = OSDynamicCast(OSBoolean, getProperty(SEPARATE_INPUT_BUFFERS_KEY));
if (boolean != NULL) {
separateInputBuffers = boolean->getValue();
}
if (separateStreamBuffers) {
IOLog("PhantomAudioEngine::createAudioStreams() - Creating a separate buffer for each stream.\n");
} else {
IOLog("PhantomAudioEngine::createAudioStreams() - Sharing one buffer among all streams.\n");
}
if (separateInputBuffers) {
IOLog("PhantomAudioEngine::createAudioStreams() - Creating separate buffers for input and output.\n");
} else {
IOLog("PhantomAudioEngine::createAudioStreams() - Sharing input and output buffers.\n");
}
for (streamNum = 0; streamNum < numStreams; streamNum++) {
IOAudioStream *inputStream = NULL, *outputStream = NULL;
UInt32 maxBitWidth = 0;
UInt32 maxNumChannels = 0;
OSCollectionIterator *formatIterator = NULL, *sampleRateIterator = NULL;
OSDictionary *formatDict;
IOAudioSampleRate sampleRate;
IOAudioStreamFormat initialFormat;
bool initialFormatSet;
UInt32 channelID;
char outputStreamName[20], inputStreamName[20];
UInt32 streamBufferSize;
initialFormatSet = false;
sampleRate.whole = 0;
sampleRate.fraction = 0;
inputStream = new IOAudioStream;
if (inputStream == NULL) {
goto Error;
}
outputStream = new IOAudioStream;
if (outputStream == NULL) {
goto Error;
}
sprintf(inputStreamName, "Input Stream #%ld", streamNum + 1);
sprintf(outputStreamName, "Output Stream #%ld", streamNum + 1);
if (!inputStream->initWithAudioEngine(this, kIOAudioStreamDirectionInput, startingChannelID, inputStreamName) ||
!outputStream->initWithAudioEngine(this, kIOAudioStreamDirectionOutput, startingChannelID, outputStreamName)) {
goto Error;
}
formatIterator = OSCollectionIterator::withCollection(formatArray);
if (!formatIterator) {
goto Error;
}
sampleRateIterator = OSCollectionIterator::withCollection(sampleRateArray);
if (!sampleRateIterator) {
goto Error;
}
formatIterator->reset();
while (formatDict = (OSDictionary *)formatIterator->getNextObject()) {
IOAudioStreamFormat format;
if (OSDynamicCast(OSDictionary, formatDict) == NULL) {
goto Error;
}
if (IOAudioStream::createFormatFromDictionary(formatDict, &format) == NULL) {
goto Error;
}
if (!initialFormatSet) {
initialFormat = format;
}
sampleRateIterator->reset();
while (number = (OSNumber *)sampleRateIterator->getNextObject()) {
if (!OSDynamicCast(OSNumber, number)) {
goto Error;
}
sampleRate.whole = number->unsigned32BitValue();
inputStream->addAvailableFormat(&format, &sampleRate, &sampleRate);
if (format.fBitDepth == 24) {
IOAudioStream::AudioIOFunction functions[2];
functions[0] = process24BitSamples;
functions[1] = clip24BitSamples;
//outputStream->addAvailableFormat(&format, &sampleRate, &sampleRate, functions, 2);
outputStream->addAvailableFormat(&format, &sampleRate, &sampleRate, (IOAudioStream::AudioIOFunction)clip24BitSamples);
if (format.fNumericRepresentation == kIOAudioStreamSampleFormatLinearPCM && format.fIsMixable == TRUE) {
format.fIsMixable = FALSE;
outputStream->addAvailableFormat(&format, &sampleRate, &sampleRate, (IOAudioStream::AudioIOFunction)clip24BitSamples);
}
} else if (format.fBitDepth == 16) {
IOAudioStream::AudioIOFunction functions[2];
functions[0] = process16BitSamples;
functions[1] = clip16BitSamples;
//outputStream->addAvailableFormat(&format, &sampleRate, &sampleRate, functions, 2);
outputStream->addAvailableFormat(&format, &sampleRate, &sampleRate, (IOAudioStream::AudioIOFunction)clip16BitSamples);
if (format.fNumericRepresentation == kIOAudioStreamSampleFormatLinearPCM && format.fIsMixable == TRUE) {
format.fIsMixable = FALSE;
outputStream->addAvailableFormat(&format, &sampleRate, &sampleRate, (IOAudioStream::AudioIOFunction)clip24BitSamples);
}
} else {
outputStream->addAvailableFormat(&format, &sampleRate, &sampleRate);
if (format.fNumericRepresentation == kIOAudioStreamSampleFormatLinearPCM && format.fIsMixable == TRUE) {
format.fIsMixable = FALSE;
outputStream->addAvailableFormat(&format, &sampleRate, &sampleRate, (IOAudioStream::AudioIOFunction)clip24BitSamples);
}
}
if (format.fNumChannels > maxNumChannels) {
maxNumChannels = format.fNumChannels;
}
if (format.fBitWidth > maxBitWidth) {
maxBitWidth = format.fBitWidth;
}
if (initialSampleRate->whole == 0) {
initialSampleRate->whole = sampleRate.whole;
}
}
}
streamBufferSize = blockSize * numBlocks * maxNumChannels * maxBitWidth / 8;
if (outputBuffer == NULL) {
if (separateStreamBuffers) {
outputBufferSize = streamBufferSize * numStreams;
} else {
outputBufferSize = streamBufferSize;
}
outputBuffer = (void *)IOMalloc(outputBufferSize);
if (!outputBuffer) {
IOLog("Error allocating output buffer - %lu bytes.\n", outputBufferSize);
goto Error;
}
inputBufferSize = outputBufferSize;
if (separateInputBuffers) {
inputBuffer = (void *)IOMalloc(inputBufferSize);
if (!inputBuffer) {
IOLog("Error allocating input buffer - %lu bytes.\n", inputBufferSize);
goto Error;
}
} else {
inputBuffer = outputBuffer;
}
}
inputStream->setFormat(&initialFormat);
outputStream->setFormat(&initialFormat);
if (separateStreamBuffers) {
inputStream->setSampleBuffer(&((UInt8 *)inputBuffer)[streamBufferSize * streamNum], streamBufferSize);
outputStream->setSampleBuffer(&((UInt8 *)outputBuffer)[streamBufferSize * streamNum], streamBufferSize);
} else {
inputStream->setSampleBuffer(inputBuffer, streamBufferSize);
outputStream->setSampleBuffer(outputBuffer, streamBufferSize);
}
addAudioStream(inputStream);
inputStream->release();
addAudioStream(outputStream);
outputStream->release();
formatIterator->release();
sampleRateIterator->release();
for (channelID = startingChannelID; channelID < (startingChannelID + maxNumChannels); channelID++) {
char channelName[20];
sprintf(channelName, "Channel %lu", channelID);
control = IOAudioLevelControl::createVolumeControl(65535,
0,
65535,
(-22 << 16) + (32768),
0,
channelID,
channelName,
0,
kIOAudioControlUsageOutput);
if (!control) {
goto Error;
}
control->setValueChangeHandler((IOAudioControl::IntValueChangeHandler)PhantomAudioDevice::volumeChangeHandler, audioDevice);
addDefaultAudioControl(control);
control->release();
control = IOAudioToggleControl::createMuteControl(false,
channelID,
channelName,
0,
kIOAudioControlUsageOutput);
if (!control) {
goto Error;
}
control->setValueChangeHandler((IOAudioControl::IntValueChangeHandler)PhantomAudioDevice::outputMuteChangeHandler, audioDevice);
addDefaultAudioControl(control);
control->release();
control = IOAudioLevelControl::createVolumeControl(65535,
0,
65535,
(-22 << 16) + (32768),
0,
channelID,
channelName,
0,
kIOAudioControlUsageInput);
if (!control) {
goto Error;
}
control->setValueChangeHandler((IOAudioControl::IntValueChangeHandler)PhantomAudioDevice::gainChangeHandler, audioDevice);
addDefaultAudioControl(control);
control->release();
control = IOAudioToggleControl::createMuteControl(false,
channelID,
channelName,
0,
kIOAudioControlUsageInput);
if (!control) {
goto Error;
}
control->setValueChangeHandler((IOAudioControl::IntValueChangeHandler)PhantomAudioDevice::inputMuteChangeHandler, audioDevice);
addDefaultAudioControl(control);
control->release();
control = IOAudioToggleControl::createMuteControl(true,
channelID,
channelName,
0,
kIOAudioControlUsagePassThru);
if (!control) {
goto Error;
}
control->setValueChangeHandler((IOAudioControl::IntValueChangeHandler)PhantomAudioDevice::passThruChangeHandler, audioDevice);
addDefaultAudioControl(control);
control->release();
}
startingChannelID += maxNumChannels;
continue;
Error:
IOLog("PhantomAudioEngine[%p]::createAudioStreams() - ERROR\n", this);
if (inputStream) {
inputStream->release();
}
if (outputStream) {
outputStream->release();
}
if (formatIterator) {
formatIterator->release();
}
if (sampleRateIterator) {
sampleRateIterator->release();
}
goto Done;
}
control = IOAudioLevelControl::createVolumeControl(65535,
0,
65535,
(-22 << 16) + (32768),
0,
kIOAudioControlChannelIDAll,
kIOAudioControlChannelNameAll,
0,
kIOAudioControlUsageOutput);
if (!control) {
goto Done;
}
control->setValueChangeHandler((IOAudioControl::IntValueChangeHandler)PhantomAudioDevice::volumeChangeHandler, audioDevice);
addDefaultAudioControl(control);
control->release();
control = IOAudioToggleControl::createMuteControl(false,
kIOAudioControlChannelIDAll,
kIOAudioControlChannelNameAll,
0,
kIOAudioControlUsageOutput);
if (!control) {
goto Done;
}
control->setValueChangeHandler((IOAudioControl::IntValueChangeHandler)PhantomAudioDevice::outputMuteChangeHandler, audioDevice);
addDefaultAudioControl(control);
control->release();
control = IOAudioLevelControl::createVolumeControl(65535,
0,
65535,
(-22 << 16) + (32768),
0,
kIOAudioControlChannelIDAll,
kIOAudioControlChannelNameAll,
0,
kIOAudioControlUsageInput);
if (!control) {
goto Done;
}
control->setValueChangeHandler((IOAudioControl::IntValueChangeHandler)PhantomAudioDevice::gainChangeHandler, audioDevice);
addDefaultAudioControl(control);
control->release();
control = IOAudioToggleControl::createMuteControl(false,
kIOAudioControlChannelIDAll,
kIOAudioControlChannelNameAll,
0,
kIOAudioControlUsageInput);
if (!control) {
goto Done;
}
control->setValueChangeHandler((IOAudioControl::IntValueChangeHandler)PhantomAudioDevice::inputMuteChangeHandler, audioDevice);
addDefaultAudioControl(control);
control->release();
control = IOAudioToggleControl::createMuteControl(true,
kIOAudioControlChannelIDAll,
kIOAudioControlChannelNameAll,
0,
kIOAudioControlUsagePassThru);
if (!control) {
goto Done;
}
control->setValueChangeHandler((IOAudioControl::IntValueChangeHandler)PhantomAudioDevice::passThruChangeHandler, audioDevice);
addDefaultAudioControl(control);
control->release();
result = true;
Done:
if (!result) {
IOLog("PhantomAudioEngine[%p]::createAudioStreams() - failed!\n", this);
}
return result;
}