//==============================================================================
void Processor::prepareToPlay(double /*sampleRate*/, int samplesPerBlock)
{
// Play safe to be clean
releaseResources();
// Prepare convolvers
{
juce::ScopedLock convolverLock(_convolverMutex);
_convolverHeadBlockSize = 1;
while (_convolverHeadBlockSize < static_cast<size_t>(samplesPerBlock))
{
_convolverHeadBlockSize *= 2;
}
_convolverTailBlockSize = std::max(size_t(8192), 2 * _convolverHeadBlockSize);
}
// Prepare convolution buffers
_wetBuffer.setSize(2, samplesPerBlock);
_convolutionBuffer.resize(samplesPerBlock);
// Initialize parameters
_stereoWidth.initializeWidth(getParameter(Parameters::StereoWidth));
// Initialize IR agents
for (size_t i=0; i<_agents.size(); ++i)
{
_agents[i]->initialize();
}
notifyAboutChange();
updateConvolvers();
}
void Processor::setIREnd(double irEnd)
{
bool changed = false;
bool irChanged = false;
{
juce::ScopedLock convolverLock(_convolverMutex);
double irEndClamped = std::min(1.0, std::max(_irBegin, irEnd));
if (::fabs(irEndClamped-irEnd) > 0.0001)
{
changed = true;
}
if (::fabs(_irEnd-irEndClamped) > 0.0001)
{
_irEnd = irEndClamped;
changed = true;
irChanged = true;
}
}
if (changed)
{
notifyAboutChange();
}
if (irChanged)
{
updateConvolvers();
}
}
void Processor::setParameter(int index, float newValue)
{
if (_parameterSet.setNormalizedParameter(index, newValue))
{
notifyAboutChange();
}
}
void Processor::clearConvolvers()
{
{
juce::ScopedLock convolverLock(_convolverMutex);
_reverse = false;
_predelayMs = 0.0;
_stretch = 1.0;
_irBegin = 0.0;
_irEnd = 1.0;
_attackLength = 0.0;
_attackShape = 0.0;
_decayShape = 0.0;
}
setParameterNotifyingHost(Parameters::EqLowCutFreq, Parameters::EqLowCutFreq.getDefaultValue());
setParameterNotifyingHost(Parameters::EqLowShelfFreq, Parameters::EqLowShelfFreq.getDefaultValue());
setParameterNotifyingHost(Parameters::EqLowShelfDecibels, Parameters::EqLowShelfDecibels.getDefaultValue());
setParameterNotifyingHost(Parameters::EqHighCutFreq, Parameters::EqHighCutFreq.getDefaultValue());
setParameterNotifyingHost(Parameters::EqHighShelfFreq, Parameters::EqHighShelfFreq.getDefaultValue());
setParameterNotifyingHost(Parameters::EqHighShelfDecibels, Parameters::EqHighShelfDecibels.getDefaultValue());
setParameterNotifyingHost(Parameters::StereoWidth, Parameters::StereoWidth.getDefaultValue());
for (size_t i=0; i<_agents.size(); ++i)
{
_agents[i]->clear();
}
notifyAboutChange();
updateConvolvers();
}
void Processor::releaseResources()
{
_wetBuffer.setSize(1, 0, false, true, false);
_convolutionBuffer.clear();
_beatsPerMinute.set(0);
notifyAboutChange();
}
void Processor::setPredelayMs(double predelayMs)
{
bool changed = false;
{
juce::ScopedLock convolverLock(_convolverMutex);
if (_predelayMs != predelayMs)
{
_predelayMs = predelayMs;
changed = true;
}
}
if (changed)
{
notifyAboutChange();
updateConvolvers();
}
}
void Processor::setReverse(bool reverse)
{
bool changed = false;
{
juce::ScopedLock convolverLock(_convolverMutex);
if (_reverse != reverse)
{
_reverse = reverse;
changed = true;
}
}
if (changed)
{
notifyAboutChange();
updateConvolvers();
}
}
void Processor::setStretch(double stretch)
{
bool changed = false;
{
juce::ScopedLock convolverLock(_convolverMutex);
if (::fabs(_stretch-stretch) > 0.000001)
{
_stretch = stretch;
changed = true;
}
}
if (changed)
{
notifyAboutChange();
updateConvolvers();
}
}
void Processor::setDecayShape(double shape)
{
bool changed = false;
{
juce::ScopedLock convolverLock(_convolverMutex);
if (_decayShape != shape)
{
_decayShape = shape;
changed = true;
}
}
if (changed)
{
notifyAboutChange();
updateConvolvers();
}
}
void Processor::setAttackLength(double length)
{
bool changed = false;
length = std::max(0.0, std::min(1.0, length));
{
juce::ScopedLock convolverLock(_convolverMutex);
if (_attackLength != length)
{
_attackLength = length;
changed = true;
}
}
if (changed)
{
notifyAboutChange();
updateConvolvers();
}
}
void Processor::processBlock(AudioSampleBuffer& buffer, MidiBuffer& /*midiMessages*/)
{
const int numInputChannels = getTotalNumInputChannels();
const int numOutputChannels = getTotalNumOutputChannels();
const size_t samplesToProcess = buffer.getNumSamples();
// Determine channel data
const float* channelData0 = nullptr;
const float* channelData1 = nullptr;
if (numInputChannels == 1)
{
channelData0 = buffer.getReadPointer(0);
channelData1 = buffer.getReadPointer(0);
}
else if (numInputChannels == 2)
{
channelData0 = buffer.getReadPointer(0);
channelData1 = buffer.getReadPointer(1);
}
// Convolution
_wetBuffer.clear();
if (numInputChannels > 0 && numOutputChannels > 0)
{
float autoGain = 1.0f;
if (getParameter(Parameters::AutoGainOn))
{
autoGain = DecibelScaling::Db2Gain(getParameter(Parameters::AutoGainDecibels));
}
// Convolve
IRAgent* irAgent00 = getAgent(0, 0);
if (irAgent00 && irAgent00->getConvolver() && numInputChannels >= 1 && numOutputChannels >= 1)
{
irAgent00->process(channelData0, &_convolutionBuffer[0], samplesToProcess);
_wetBuffer.addFrom(0, 0, &_convolutionBuffer[0], samplesToProcess, autoGain);
}
IRAgent* irAgent01 = getAgent(0, 1);
if (irAgent01 && irAgent01->getConvolver() && numInputChannels >= 1 && numOutputChannels >= 2)
{
irAgent01->process(channelData0, &_convolutionBuffer[0], samplesToProcess);
_wetBuffer.addFrom(1, 0, &_convolutionBuffer[0], samplesToProcess, autoGain);
}
IRAgent* irAgent10 = getAgent(1, 0);
if (irAgent10 && irAgent10->getConvolver() && numInputChannels >= 2 && numOutputChannels >= 1)
{
irAgent10->process(channelData1, &_convolutionBuffer[0], samplesToProcess);
_wetBuffer.addFrom(0, 0, &_convolutionBuffer[0], samplesToProcess, autoGain);
}
IRAgent* irAgent11 = getAgent(1, 1);
if (irAgent11 && irAgent11->getConvolver() && numInputChannels >= 2 && numOutputChannels >= 2)
{
irAgent11->process(channelData1, &_convolutionBuffer[0], samplesToProcess);
_wetBuffer.addFrom(1, 0, &_convolutionBuffer[0], samplesToProcess, autoGain);
}
}
// Stereo width
if (numOutputChannels >= 2)
{
_stereoWidth.updateWidth(getParameter(Parameters::StereoWidth));
_stereoWidth.process(_wetBuffer.getWritePointer(0), _wetBuffer.getWritePointer(1), samplesToProcess);
}
// Dry/wet gain
{
float dryGain0, dryGain1;
_dryGain.updateValue(DecibelScaling::Db2Gain(getParameter(Parameters::DryDecibels)));
_dryGain.getSmoothValues(samplesToProcess, dryGain0, dryGain1);
buffer.applyGainRamp(0, samplesToProcess, dryGain0, dryGain1);
}
{
float wetGain0, wetGain1;
_wetGain.updateValue(DecibelScaling::Db2Gain(getParameter(Parameters::WetDecibels)));
_wetGain.getSmoothValues(samplesToProcess, wetGain0, wetGain1);
_wetBuffer.applyGainRamp(0, samplesToProcess, wetGain0, wetGain1);
}
// Level measurement (dry)
if (numInputChannels == 1)
{
_levelMeasurementsDry[0].process(samplesToProcess, buffer.getReadPointer(0));
_levelMeasurementsDry[1].reset();
}
else if (numInputChannels == 2)
{
_levelMeasurementsDry[0].process(samplesToProcess, buffer.getReadPointer(0));
_levelMeasurementsDry[1].process(samplesToProcess, buffer.getReadPointer(1));
}
// Sum wet to dry signal
{
float dryOnGain0, dryOnGain1;
_dryOn.updateValue(getParameter(Parameters::DryOn) ? 1.0f : 0.0f);
_dryOn.getSmoothValues(samplesToProcess, dryOnGain0, dryOnGain1);
buffer.applyGainRamp(0, samplesToProcess, dryOnGain0, dryOnGain1);
}
{
float wetOnGain0, wetOnGain1;
_wetOn.updateValue(getParameter(Parameters::WetOn) ? 1.0f : 0.0f);
_wetOn.getSmoothValues(samplesToProcess, wetOnGain0, wetOnGain1);
if (numOutputChannels > 0)
{
buffer.addFromWithRamp(0, 0, _wetBuffer.getReadPointer(0), samplesToProcess, wetOnGain0, wetOnGain1);
}
if (numOutputChannels > 1)
{
buffer.addFromWithRamp(1, 0, _wetBuffer.getReadPointer(1), samplesToProcess, wetOnGain0, wetOnGain1);
}
}
// Level measurement (wet/out)
if (numOutputChannels == 1)
{
_levelMeasurementsWet[0].process(samplesToProcess, _wetBuffer.getReadPointer(0));
_levelMeasurementsWet[1].reset();
_levelMeasurementsOut[0].process(samplesToProcess, buffer.getReadPointer(0));
_levelMeasurementsOut[1].reset();
}
else if (numOutputChannels == 2)
{
_levelMeasurementsWet[0].process(samplesToProcess, _wetBuffer.getReadPointer(0));
_levelMeasurementsWet[1].process(samplesToProcess, _wetBuffer.getReadPointer(1));
_levelMeasurementsOut[0].process(samplesToProcess, buffer.getReadPointer(0));
_levelMeasurementsOut[1].process(samplesToProcess, buffer.getReadPointer(1));
}
// In case we have more outputs than inputs, we'll clear any output
// channels that didn't contain input data, (because these aren't
// guaranteed to be empty - they may contain garbage).
for (int i=numInputChannels; i<numOutputChannels; ++i)
{
buffer.clear(i, 0, buffer.getNumSamples());
}
// Update beats per minute info
float beatsPerMinute = 0.0f;
juce::AudioPlayHead* playHead = getPlayHead();
if (playHead)
{
juce::AudioPlayHead::CurrentPositionInfo currentPositionInfo;
if (playHead->getCurrentPosition(currentPositionInfo))
{
beatsPerMinute = static_cast<float>(currentPositionInfo.bpm);
}
}
if (::fabs(_beatsPerMinute.exchange(beatsPerMinute)-beatsPerMinute) > 0.001f)
{
notifyAboutChange();
}
}
void Property::setReadOnly(const bool& value) {
readOnly_ = value;
notifyObserversOnSetReadOnly(readOnly_);
notifyAboutChange();
}
void Property::setDisplayName(const std::string& displayName) {
displayName_ = displayName;
notifyObserversOnSetDisplayName(displayName_);
notifyAboutChange();
}
void Processor::numChannelsChanged()
{
juce::AudioProcessor::numChannelsChanged();
notifyAboutChange();
}
void IRAgent::propagateChange()
{
notifyAboutChange();
_processor.notifyAboutChange();
}
void Property::setVisible(bool val) {
visible_ = val;
notifyObserversOnSetVisible(visible_);
notifyAboutChange();
}
void Property::setUsageMode(UsageMode usageMode) {
usageMode_ = usageMode;
notifyObserversOnSetUsageMode(usageMode_);
notifyAboutChange();
}
void Property::setIdentifier(const std::string& identifier) {
identifier_ = identifier;
notifyObserversOnSetIdentifier(identifier_);
notifyAboutChange();
}
void Property::setSemantics(const PropertySemantics& semantics) {
semantics_ = semantics;
notifyObserversOnSetSemantics(semantics_);
notifyAboutChange();
}