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juce_DelayLine.cpp
/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2022 - Raw Material Software Limited
JUCE is an open source library subject to commercial or open-source
licensing.
By using JUCE, you agree to the terms of both the JUCE 7 End-User License
Agreement and JUCE Privacy Policy.
End User License Agreement: www.juce.com/juce-7-licence
Privacy Policy: www.juce.com/juce-privacy-policy
Or: You may also use this code under the terms of the GPL v3 (see
www.gnu.org/licenses).
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::dsp
{
//==============================================================================
template <typename SampleType, typename InterpolationType>
DelayLine<SampleType, InterpolationType>::DelayLine()
: DelayLine (0)
{
}
template <typename SampleType, typename InterpolationType>
DelayLine<SampleType, InterpolationType>::DelayLine (int maximumDelayInSamples)
{
jassert (maximumDelayInSamples >= 0);
sampleRate = 44100.0;
setMaximumDelayInSamples (maximumDelayInSamples);
}
//==============================================================================
template <typename SampleType, typename InterpolationType>
void DelayLine<SampleType, InterpolationType>::setDelay (SampleType newDelayInSamples)
{
auto upperLimit = (SampleType) getMaximumDelayInSamples();
jassert (isPositiveAndNotGreaterThan (newDelayInSamples, upperLimit));
delay = jlimit ((SampleType) 0, upperLimit, newDelayInSamples);
delayInt = static_cast<int> (std::floor (delay));
delayFrac = delay - (SampleType) delayInt;
updateInternalVariables();
}
template <typename SampleType, typename InterpolationType>
SampleType DelayLine<SampleType, InterpolationType>::getDelay() const
{
return delay;
}
//==============================================================================
template <typename SampleType, typename InterpolationType>
void DelayLine<SampleType, InterpolationType>::prepare (const ProcessSpec& spec)
{
jassert (spec.numChannels > 0);
bufferData.setSize ((int) spec.numChannels, totalSize, false, false, true);
writePos.resize (spec.numChannels);
readPos.resize (spec.numChannels);
v.resize (spec.numChannels);
sampleRate = spec.sampleRate;
reset();
}
template <typename SampleType, typename InterpolationType>
void DelayLine<SampleType, InterpolationType>::setMaximumDelayInSamples (int maxDelayInSamples)
{
jassert (maxDelayInSamples >= 0);
totalSize = jmax (4, maxDelayInSamples + 2);
bufferData.setSize ((int) bufferData.getNumChannels(), totalSize, false, false, true);
reset();
}
template <typename SampleType, typename InterpolationType>
void DelayLine<SampleType, InterpolationType>::reset()
{
for (auto vec : { &writePos, &readPos })
std::fill (vec->begin(), vec->end(), 0);
std::fill (v.begin(), v.end(), static_cast<SampleType> (0));
bufferData.clear();
}
//==============================================================================
template <typename SampleType, typename InterpolationType>
void DelayLine<SampleType, InterpolationType>::pushSample (int channel, SampleType sample)
{
bufferData.setSample (channel, writePos[(size_t) channel], sample);
writePos[(size_t) channel] = (writePos[(size_t) channel] + totalSize - 1) % totalSize;
}
template <typename SampleType, typename InterpolationType>
SampleType DelayLine<SampleType, InterpolationType>::popSample (int channel, SampleType delayInSamples, bool updateReadPointer)
{
if (delayInSamples >= 0)
setDelay (delayInSamples);
auto result = interpolateSample (channel);
if (updateReadPointer)
readPos[(size_t) channel] = (readPos[(size_t) channel] + totalSize - 1) % totalSize;
return result;
}
//==============================================================================
template class DelayLine<float, DelayLineInterpolationTypes::None>;
template class DelayLine<double, DelayLineInterpolationTypes::None>;
template class DelayLine<float, DelayLineInterpolationTypes::Linear>;
template class DelayLine<double, DelayLineInterpolationTypes::Linear>;
template class DelayLine<float, DelayLineInterpolationTypes::Lagrange3rd>;
template class DelayLine<double, DelayLineInterpolationTypes::Lagrange3rd>;
template class DelayLine<float, DelayLineInterpolationTypes::Thiran>;
template class DelayLine<double, DelayLineInterpolationTypes::Thiran>;
} // namespace juce::dsp
juce::dsp::DelayLine
Definition juce_DelayLine.h:93
juce::dsp::DelayLine::prepare
void prepare(const ProcessSpec &spec)
Definition juce_DelayLine.cpp:68
juce::dsp::DelayLine::getMaximumDelayInSamples
int getMaximumDelayInSamples() const noexcept
Definition juce_DelayLine.h:126
juce::dsp::DelayLine::setDelay
void setDelay(SampleType newDelayInSamples)
Definition juce_DelayLine.cpp:48
juce::dsp::DelayLine::popSample
SampleType popSample(int channel, SampleType delayInSamples=-1, bool updateReadPointer=true)
Definition juce_DelayLine.cpp:112
juce::dsp::DelayLine::DelayLine
DelayLine()
Definition juce_DelayLine.cpp:31
juce::dsp::DelayLine::setMaximumDelayInSamples
void setMaximumDelayInSamples(int maxDelayInSamples)
Definition juce_DelayLine.cpp:84
juce::dsp::DelayLine::getDelay
SampleType getDelay() const
Definition juce_DelayLine.cpp:61
juce::dsp::DelayLine::reset
void reset()
Definition juce_DelayLine.cpp:93
juce::dsp::DelayLine::pushSample
void pushSample(int channel, SampleType sample)
Definition juce_DelayLine.cpp:105
juce::dsp::ProcessSpec
Definition juce_ProcessContext.h:36
juce::dsp::ProcessSpec::numChannels
uint32 numChannels
Definition juce_ProcessContext.h:44
juce::dsp::ProcessSpec::sampleRate
double sampleRate
Definition juce_ProcessContext.h:38