bool eqMac2DriverEngine::initHardware(IOService *provider)
{
bool result = false;
IOAudioSampleRate initialSampleRate;
IOWorkLoop *wl;
//IOLog("eqMac2DriverEngine[%p]::initHardware(%p)\n", this, provider);
duringHardwareInit = TRUE;
if (!super::initHardware(provider)) {
goto Done;
}
initialSampleRate.whole = 0;
initialSampleRate.fraction = 0;
if (!createAudioStreams(&initialSampleRate)) {
IOLog("eqMac2DriverEngine::initHardware() failed\n");
goto Done;
}
if (initialSampleRate.whole == 0) {
goto Done;
}
// calculate our timeout in nanosecs, taking care to keep 64bits
blockTimeoutNS = blockSize;
blockTimeoutNS *= 1000000000;
blockTimeoutNS /= initialSampleRate.whole;
setSampleRate(&initialSampleRate);
// Set the number of sample frames in each buffer
setNumSampleFramesPerBuffer(blockSize * numBlocks);
wl = getWorkLoop();
if (!wl) {
goto Done;
}
timerEventSource = IOTimerEventSource::timerEventSource(this, ourTimerFired);
if (!timerEventSource) {
goto Done;
}
workLoop->addEventSource(timerEventSource);
result = true;
Done:
duringHardwareInit = FALSE;
return result;
}
bool PhantomAudioEngine::initHardware(IOService *provider)
{
bool result = false;
IOAudioSampleRate initialSampleRate;
IOWorkLoop *wl;
IOLog("PhantomAudioEngine[%p]::initHardware(%p)\n", this, provider);
duringHardwareInit = TRUE;
if (!super::initHardware(provider)) {
goto Done;
}
initialSampleRate.whole = 0;
initialSampleRate.fraction = 0;
if (!createAudioStreams(&initialSampleRate)) {
goto Done;
}
if (initialSampleRate.whole == 0) {
goto Done;
}
blockTimeoutUS = 1000000 * blockSize / initialSampleRate.whole;
setSampleRate(&initialSampleRate);
// Set the number of sample frames in each buffer
setNumSampleFramesPerBuffer(blockSize * numBlocks);
wl = getWorkLoop();
if (!wl) {
goto Done;
}
timerEventSource = IOTimerEventSource::timerEventSource(this, timerFired);
if (!timerEventSource) {
goto Done;
}
workLoop->addEventSource(timerEventSource);
result = true;
Done:
duringHardwareInit = FALSE;
return result;
}