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/*
==============================================================================
Reverb.h
Created: 30 Dec 2023 8:38:55pm
Author: binya
==============================================================================
*/
#pragma once
#include <JuceHeader.h>
#include "Effect.h"
#include <gin_simpleverb.h>
/** This is a simple Effect class that wraps around Gin's SimpleVerb implementation */
class Reverb final : public Effect
{
public:
Reverb() = default;
void initialize(int numChannels, int fxSampleRate) override
{
int numEffects = numChannels / 2 + numChannels % 2;
channelGinReverbs.resize(numEffects);
for (int ch = 0; ch < numEffects; ch++)
{
channelGinReverbs[ch] = std::make_unique<gin::SimpleVerb>();
channelGinReverbs[ch]->setSampleRate(float(fxSampleRate));
channelGinReverbs[ch]->setParameters(0.f, 0.f, 1.f, 0.f, 1.f, 0.f, 0.f);
}
}
// The intended ranges of these values are in PluginParameters.h
void updateParams(float size, float damping, float predelay, float lows, float highs, float mix) const
{
for (const auto& channelGinReverb : channelGinReverbs)
{
channelGinReverb->setParameters(
juce::jmap<float>(size, PluginParameters::REVERB_SIZE_RANGE.getStart(), PluginParameters::REVERB_SIZE_RANGE.getEnd(), 0.f, 1.f),
juce::jmap<float>(damping, PluginParameters::REVERB_DAMPING_RANGE.getStart(), PluginParameters::REVERB_DAMPING_RANGE.getEnd(), 0.f, 1.f),
float(sqrtf(predelay / 250.f)), // conversions to counteract the faders in this algorithm
juce::jmap<float>(highs, PluginParameters::REVERB_HIGHS_RANGE.getStart(), PluginParameters::REVERB_HIGHS_RANGE.getEnd(), 0.3f, 1.f),
1.f - juce::jmap<float>(lows, PluginParameters::REVERB_LOWS_RANGE.getStart(), PluginParameters::REVERB_LOWS_RANGE.getEnd(), 0.3f, 1.f),
mix,
(1.f - mix) / 2.f
);
}
}
void updateParams(const SamplerParameters& sampleSound, bool) override
{
updateParams(
sampleSound.reverbSize->get(),
sampleSound.reverbDamping->get(),
sampleSound.reverbPredelay->get(),
sampleSound.reverbLows->get(),
sampleSound.reverbHighs->get(),
sampleSound.reverbMix->get()
);
}
void process(juce::AudioBuffer<float>& buffer, int numSamples, int startSample = 0) override
{
bool lastIsMono = buffer.getNumChannels() % 2 == 1;
for (int ch = 0; ch < buffer.getNumChannels(); ch += 2)
{
// I modified the header of the process method to work easier with this code, you'll need to do the same to get it to compile
// void SimpleVerb::process (const float* in1, const float* in2, float* out1, float* out2, int numSamples)
if (lastIsMono && ch == buffer.getNumChannels() - 1)
channelGinReverbs[ch / 2]->process(
buffer.getReadPointer(ch, startSample), buffer.getReadPointer(ch, startSample),
buffer.getWritePointer(ch, startSample), buffer.getWritePointer(ch, startSample), numSamples);
else
channelGinReverbs[ch / 2]->process(
buffer.getReadPointer(ch, startSample), buffer.getReadPointer(ch + 1, startSample),
buffer.getWritePointer(ch, startSample), buffer.getWritePointer(ch + 1, startSample), numSamples);
}
}
private:
std::vector<std::unique_ptr<gin::SimpleVerb>> channelGinReverbs;
};