void PannerNode::process(size_t framesToProcess)
{
AudioBus* destination = output(0)->bus();
if (!isInitialized() || !input(0)->isConnected() || !m_panner.get()) {
destination->zero();
return;
}
AudioBus* source = input(0)->bus();
if (!source) {
destination->zero();
return;
}
// Apply the panning effect.
double azimuth;
double elevation;
getAzimuthElevation(&azimuth, &elevation);
m_panner->pan(azimuth, elevation, source, destination, framesToProcess);
// Get the distance and cone gain.
double totalGain = distanceConeGain();
// Snap to desired gain at the beginning.
if (m_lastGain == -1.0)
m_lastGain = totalGain;
// Apply gain in-place with de-zippering.
destination->copyWithGainFrom(*destination, &m_lastGain, totalGain);
}
void PannerNode::process(size_t framesToProcess)
{
AudioBus* destination = output(0)->bus();
if (!isInitialized() || !input(0)->isConnected() || !m_panner.get()) {
destination->zero();
return;
}
AudioBus* source = input(0)->bus();
if (!source) {
destination->zero();
return;
}
// HRTFDatabase should be loaded before proceeding for offline audio context when panningModel() is "HRTF".
if (panningModel() == "HRTF" && !m_hrtfDatabaseLoader->isLoaded()) {
if (context()->isOfflineContext())
m_hrtfDatabaseLoader->waitForLoaderThreadCompletion();
else {
destination->zero();
return;
}
}
// The audio thread can't block on this lock, so we use std::try_to_lock instead.
std::unique_lock<std::mutex> lock(m_pannerMutex, std::try_to_lock);
if (!lock.owns_lock()) {
// Too bad - The try_lock() failed. We must be in the middle of changing the panner.
destination->zero();
return;
}
// Apply the panning effect.
double azimuth;
double elevation;
getAzimuthElevation(&azimuth, &elevation);
m_panner->pan(azimuth, elevation, source, destination, framesToProcess);
// Get the distance and cone gain.
double totalGain = distanceConeGain();
// Snap to desired gain at the beginning.
if (m_lastGain == -1.0)
m_lastGain = totalGain;
// Apply gain in-place with de-zippering.
destination->copyWithGainFrom(*destination, &m_lastGain, totalGain);
}
void PannerNode::process(size_t framesToProcess)
{
AudioBus* destination = output(0)->bus();
if (!isInitialized() || !input(0)->isConnected() || !m_panner.get()) {
destination->zero();
return;
}
AudioBus* source = input(0)->bus();
if (!source) {
destination->zero();
return;
}
// The audio thread can't block on this lock, so we call tryLock() instead.
MutexTryLocker tryLocker(m_pannerLock);
if (tryLocker.locked()) {
// Apply the panning effect.
double azimuth;
double elevation;
getAzimuthElevation(&azimuth, &elevation);
m_panner->pan(azimuth, elevation, source, destination, framesToProcess);
// Get the distance and cone gain.
double totalGain = distanceConeGain();
// Snap to desired gain at the beginning.
if (m_lastGain == -1.0)
m_lastGain = totalGain;
// Apply gain in-place with de-zippering.
destination->copyWithGainFrom(*destination, &m_lastGain, totalGain);
} else {
// Too bad - The tryLock() failed. We must be in the middle of changing the panner.
destination->zero();
}
}