void PingPongDelayNode::BuildSubgraph(ContextGraphLock & lock)
{
auto ac = lock.context();
if (!ac)
throw std::invalid_argument("Graph lock could not acquire context");
// Input into splitter
input->connect(ac, splitter.get(), 0, 0);
splitter->connect(ac, splitterGain.get(), 0, 0);
splitter->connect(ac, splitterGain.get(), 1, 0);
splitterGain->connect(ac, wetGain.get(), 0, 0);
splitterGain->gain()->setValue(0.5f);
wetGain->connect(ac, leftDelay.get(), 0, 0);
feedbackGain->connect(ac, leftDelay.get(), 0, 0);
leftDelay->connect(ac, rightDelay.get(), 0, 0);
rightDelay->connect(ac, feedbackGain.get(), 0, 0);
leftDelay->connect(ac, merger.get(), 0, 0);
rightDelay->connect(ac, merger.get(), 0, 1);
merger->connect(ac, output.get(), 0, 0);
// Activate with input->output
input->connect(ac, output.get(), 0, 0);
}
void AudioNode::setChannelCountMode(ContextGraphLock& g, ChannelCountMode mode)
{
if (mode >= ChannelCountMode::End || !g.context())
{
throw std::invalid_argument("No context specified");
}
else
{
if (m_channelCountMode != mode)
{
m_channelCountMode = mode;
updateChannelsForInputs(g);
}
}
}
void AudioNode::setChannelCount(ContextGraphLock& g, unsigned long channelCount)
{
if (!g.context())
{
throw std::invalid_argument("No context specified");
}
if (channelCount > 0 && channelCount <= AudioContext::maxNumberOfChannels)
{
if (m_channelCount != channelCount) {
m_channelCount = channelCount;
if (m_channelCountMode != ChannelCountMode::Max)
updateChannelsForInputs(g);
}
return;
}
throw std::logic_error("Should not be reached");
}
void DefaultAudioDestinationNode::setChannelCount(ContextGraphLock& g, unsigned long channelCount)
{
// The channelCount for the input to this node controls the actual number of channels we
// send to the audio hardware. It can only be set depending on the maximum number of
// channels supported by the hardware.
ASSERT(g.context());
if (!maxChannelCount() || channelCount > maxChannelCount())
{
throw std::invalid_argument("Max channel count invalid");
}
unsigned long oldChannelCount = this->channelCount();
AudioNode::setChannelCount(g, channelCount);
if (this->channelCount() != oldChannelCount && isInitialized())
{
// Re-create destination.
m_destination->stop();
createDestination();
m_destination->start();
}
}