mirror of
https://github.com/juce-framework/JUCE.git
synced 2026-01-09 23:34:20 +00:00
147 lines
4.1 KiB
C++
147 lines
4.1 KiB
C++
/*
|
|
==============================================================================
|
|
|
|
This file is part of the JUCE 6 technical preview.
|
|
Copyright (c) 2020 - Raw Material Software Limited
|
|
|
|
You may use this code under the terms of the GPL v3
|
|
(see www.gnu.org/licenses).
|
|
|
|
For this technical preview, this file is not subject to commercial licensing.
|
|
|
|
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
|
|
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
|
|
DISCLAIMED.
|
|
|
|
==============================================================================
|
|
*/
|
|
|
|
namespace juce
|
|
{
|
|
namespace dsp
|
|
{
|
|
|
|
//==============================================================================
|
|
template <typename SampleType>
|
|
Phaser<SampleType>::Phaser()
|
|
{
|
|
auto oscFunction = [] (SampleType x) { return std::sin (x); };
|
|
osc.initialise (oscFunction);
|
|
|
|
for (auto n = 0; n < numStages; ++n)
|
|
{
|
|
filters.add (new FirstOrderTPTFilter<SampleType>());
|
|
filters[n]->setType (FirstOrderTPTFilterType::allpass);
|
|
}
|
|
|
|
dryWet.setMixingRule (DryWetMixingRule::linear);
|
|
}
|
|
|
|
template <typename SampleType>
|
|
void Phaser<SampleType>::setRate (SampleType newRateHz)
|
|
{
|
|
jassert (isPositiveAndBelow (newRateHz, static_cast<SampleType> (100.0)));
|
|
|
|
rate = newRateHz;
|
|
update();
|
|
}
|
|
|
|
template <typename SampleType>
|
|
void Phaser<SampleType>::setDepth (SampleType newDepth)
|
|
{
|
|
jassert (isPositiveAndNotGreaterThan (newDepth, static_cast<SampleType> (1.0)));
|
|
|
|
depth = newDepth;
|
|
update();
|
|
}
|
|
|
|
template <typename SampleType>
|
|
void Phaser<SampleType>::setCentreFrequency (SampleType newCentreHz)
|
|
{
|
|
jassert (isPositiveAndBelow (newCentreHz, static_cast<SampleType> (sampleRate * 0.5)));
|
|
|
|
centreFrequency = newCentreHz;
|
|
normCentreFrequency = mapToLog10 (centreFrequency, static_cast<SampleType> (20.0), static_cast<SampleType> (jmin (20000.0, 0.49 * sampleRate)));
|
|
}
|
|
|
|
template <typename SampleType>
|
|
void Phaser<SampleType>::setFeedback (SampleType newFeedback)
|
|
{
|
|
jassert (newFeedback >= static_cast<SampleType> (-1.0) && newFeedback <= static_cast<SampleType> (1.0));
|
|
|
|
feedback = newFeedback;
|
|
update();
|
|
}
|
|
|
|
template <typename SampleType>
|
|
void Phaser<SampleType>::setMix (SampleType newMix)
|
|
{
|
|
jassert (isPositiveAndNotGreaterThan (newMix, static_cast<SampleType> (1.0)));
|
|
|
|
mix = newMix;
|
|
update();
|
|
}
|
|
|
|
//==============================================================================
|
|
template <typename SampleType>
|
|
void Phaser<SampleType>::prepare (const ProcessSpec& spec)
|
|
{
|
|
jassert (spec.sampleRate > 0);
|
|
jassert (spec.numChannels > 0);
|
|
|
|
sampleRate = spec.sampleRate;
|
|
|
|
for (auto n = 0; n < numStages; ++n)
|
|
filters[n]->prepare (spec);
|
|
|
|
dryWet.prepare (spec);
|
|
feedbackVolume.resize (spec.numChannels);
|
|
lastOutput.resize (spec.numChannels);
|
|
|
|
auto specDown = spec;
|
|
specDown.sampleRate /= (double) maxUpdateCounter;
|
|
specDown.maximumBlockSize = specDown.maximumBlockSize / (uint32) maxUpdateCounter + 1;
|
|
|
|
osc.prepare (specDown);
|
|
bufferFrequency.setSize (1, (int) specDown.maximumBlockSize, false, false, true);
|
|
|
|
update();
|
|
reset();
|
|
}
|
|
|
|
template <typename SampleType>
|
|
void Phaser<SampleType>::reset()
|
|
{
|
|
std::fill (lastOutput.begin(), lastOutput.end(), static_cast<SampleType> (0));
|
|
|
|
for (auto n = 0; n < numStages; ++n)
|
|
filters[n]->reset();
|
|
|
|
osc.reset();
|
|
dryWet.reset();
|
|
|
|
oscVolume.reset (sampleRate / (double) maxUpdateCounter, 0.05);
|
|
|
|
for (auto& vol : feedbackVolume)
|
|
vol.reset (sampleRate, 0.05);
|
|
|
|
updateCounter = 0;
|
|
}
|
|
|
|
template <typename SampleType>
|
|
void Phaser<SampleType>::update()
|
|
{
|
|
osc.setFrequency (rate);
|
|
oscVolume.setTargetValue (depth * (SampleType) 0.5);
|
|
dryWet.setWetMixProportion (mix);
|
|
|
|
for (auto& vol : feedbackVolume)
|
|
vol.setTargetValue (feedback);
|
|
}
|
|
|
|
//==============================================================================
|
|
template class Phaser<float>;
|
|
template class Phaser<double>;
|
|
|
|
} // namespace dsp
|
|
} // namespace juce
|