bool AudioProcessor::Bus::isNumberOfChannelsSupported (int channels) const
{
if (channels == 0) return isLayoutSupported(AudioChannelSet::disabled());
const AudioChannelSet set = supportedLayoutWithChannels (channels);
return (! set.isDisabled()) && isLayoutSupported (set);
}
//==============================================================================
bool setPreferredBusArrangement (bool isInputBus, int busIndex,
const AudioChannelSet& preferred) override
{
const int numChannels = preferred.size();
const bool isMainBus = (busIndex == 0);
// do not allow disabling the main output bus
if (isMainBus && preferred.isDisabled()) return false;
// only support mono or stereo (or disabling) buses
if (numChannels > 2) return false;
// pass the call on to the base class
return AudioProcessor::setPreferredBusArrangement (isInputBus, busIndex, preferred);
}
bool AudioProcessor::Bus::setNumberOfChannels (int channels)
{
bool isInputBus;
int busIdx;
busDirAndIndex (isInputBus, busIdx);
if (owner.setChannelLayoutOfBus (isInputBus, busIdx, AudioChannelSet::canonicalChannelSet (channels)))
return true;
if (channels == 0)
return false;
AudioChannelSet namedSet = AudioChannelSet::namedChannelSet (channels);
if (! namedSet.isDisabled() && owner.setChannelLayoutOfBus (isInputBus, busIdx, namedSet))
return true;
return owner.setChannelLayoutOfBus (isInputBus, busIdx, AudioChannelSet::discreteChannels (channels));
}
bool AudioProcessor::Bus::setCurrentLayoutWithoutEnabling (const AudioChannelSet& set)
{
if (! set.isDisabled())
{
if (isEnabled())
return setCurrentLayout (set);
if (isLayoutSupported (set))
{
lastLayout = set;
return true;
}
return false;
}
return isLayoutSupported (set);
}
