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airwindows/plugins/MacSignedVST/Pop/source/PopProc.cpp
Christopher Johnson f06250c082 Clarifying Licensing in boilerplate code generation
2022-11-21 09:20:21 -05:00

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/* ========================================
* Pop - Pop.h
* Copyright (c) 2016 airwindows, Airwindows uses the MIT license
* ======================================== */
#ifndef __Pop_H
#include "Pop.h"
#endif
void Pop::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames)
{
float* in1 = inputs[0];
float* in2 = inputs[1];
float* out1 = outputs[0];
float* out2 = outputs[1];
double overallscale = 1.0;
overallscale /= 44100.0;
overallscale *= getSampleRate();
double highGainOffset = pow(A,2)*0.023;
double threshold = 1.001 - (1.0-pow(1.0-A,5));
double muMakeupGain = sqrt(1.0 / threshold);
//gain settings around threshold
double release = (A*100000.0) + 300000.0;
int maxdelay = (int)(1450.0 * overallscale);
if (maxdelay > 9999) maxdelay = 9999;
release /= overallscale;
double fastest = sqrt(release);
//speed settings around release
double output = B;
double wet = C;
// µ µ µ µ µ µ µ µ µ µ µ µ is the kitten song o/~
while (--sampleFrames >= 0)
{
double inputSampleL = *in1;
double inputSampleR = *in2;
if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17;
if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17;
double drySampleL = inputSampleL;
double drySampleR = inputSampleR;
dL[delay] = inputSampleL;
dR[delay] = inputSampleR;
delay--;
if (delay < 0 || delay > maxdelay) {delay = maxdelay;}
//yes this is a second bounds check. it's cheap, check EVERY time
inputSampleL = (inputSampleL * thickenL) + (dL[delay] * (1.0-thickenL));
inputSampleR = (inputSampleR * thickenR) + (dR[delay] * (1.0-thickenR));
double lowestSampleL = inputSampleL;
if (fabs(inputSampleL) > fabs(previousL)) lowestSampleL = previousL;
if (fabs(lowestSampleL) > fabs(previous2L)) lowestSampleL = (lowestSampleL + previous2L) / 1.99;
if (fabs(lowestSampleL) > fabs(previous3L)) lowestSampleL = (lowestSampleL + previous3L) / 1.98;
if (fabs(lowestSampleL) > fabs(previous4L)) lowestSampleL = (lowestSampleL + previous4L) / 1.97;
if (fabs(lowestSampleL) > fabs(previous5L)) lowestSampleL = (lowestSampleL + previous5L) / 1.96;
previous5L = previous4L;
previous4L = previous3L;
previous3L = previous2L;
previous2L = previousL;
previousL = inputSampleL;
inputSampleL *= muMakeupGain;
double punchinessL = 0.95-fabs(inputSampleL*0.08);
if (punchinessL < 0.65) punchinessL = 0.65;
double lowestSampleR = inputSampleR;
if (fabs(inputSampleR) > fabs(previousR)) lowestSampleR = previousR;
if (fabs(lowestSampleR) > fabs(previous2R)) lowestSampleR = (lowestSampleR + previous2R) / 1.99;
if (fabs(lowestSampleR) > fabs(previous3R)) lowestSampleR = (lowestSampleR + previous3R) / 1.98;
if (fabs(lowestSampleR) > fabs(previous4R)) lowestSampleR = (lowestSampleR + previous4R) / 1.97;
if (fabs(lowestSampleR) > fabs(previous5R)) lowestSampleR = (lowestSampleR + previous5R) / 1.96;
previous5R = previous4R;
previous4R = previous3R;
previous3R = previous2R;
previous2R = previousR;
previousR = inputSampleR;
inputSampleR *= muMakeupGain;
double punchinessR = 0.95-fabs(inputSampleR*0.08);
if (punchinessR < 0.65) punchinessR = 0.65;
//adjust coefficients for L
if (flip)
{
if (fabs(lowestSampleL) > threshold)
{
muVaryL = threshold / fabs(lowestSampleL);
muAttackL = sqrt(fabs(muSpeedAL));
muCoefficientAL = muCoefficientAL * (muAttackL-1.0);
if (muVaryL < threshold)
{
muCoefficientAL = muCoefficientAL + threshold;
}
else
{
muCoefficientAL = muCoefficientAL + muVaryL;
}
muCoefficientAL = muCoefficientAL / muAttackL;
}
else
{
muCoefficientAL = muCoefficientAL * ((muSpeedAL * muSpeedAL)-1.0);
muCoefficientAL = muCoefficientAL + 1.0;
muCoefficientAL = muCoefficientAL / (muSpeedAL * muSpeedAL);
}
muNewSpeedL = muSpeedAL * (muSpeedAL-1);
muNewSpeedL = muNewSpeedL + fabs(lowestSampleL*release)+fastest;
muSpeedAL = muNewSpeedL / muSpeedAL;
}
else
{
if (fabs(lowestSampleL) > threshold)
{
muVaryL = threshold / fabs(lowestSampleL);
muAttackL = sqrt(fabs(muSpeedBL));
muCoefficientBL = muCoefficientBL * (muAttackL-1);
if (muVaryL < threshold)
{
muCoefficientBL = muCoefficientBL + threshold;
}
else
{
muCoefficientBL = muCoefficientBL + muVaryL;
}
muCoefficientBL = muCoefficientBL / muAttackL;
}
else
{
muCoefficientBL = muCoefficientBL * ((muSpeedBL * muSpeedBL)-1.0);
muCoefficientBL = muCoefficientBL + 1.0;
muCoefficientBL = muCoefficientBL / (muSpeedBL * muSpeedBL);
}
muNewSpeedL = muSpeedBL * (muSpeedBL-1);
muNewSpeedL = muNewSpeedL + fabs(lowestSampleL*release)+fastest;
muSpeedBL = muNewSpeedL / muSpeedBL;
}
//got coefficients, adjusted speeds for L
//adjust coefficients for R
if (flip)
{
if (fabs(lowestSampleR) > threshold)
{
muVaryR = threshold / fabs(lowestSampleR);
muAttackR = sqrt(fabs(muSpeedAR));
muCoefficientAR = muCoefficientAR * (muAttackR-1.0);
if (muVaryR < threshold)
{
muCoefficientAR = muCoefficientAR + threshold;
}
else
{
muCoefficientAR = muCoefficientAR + muVaryR;
}
muCoefficientAR = muCoefficientAR / muAttackR;
}
else
{
muCoefficientAR = muCoefficientAR * ((muSpeedAR * muSpeedAR)-1.0);
muCoefficientAR = muCoefficientAR + 1.0;
muCoefficientAR = muCoefficientAR / (muSpeedAR * muSpeedAR);
}
muNewSpeedR = muSpeedAR * (muSpeedAR-1);
muNewSpeedR = muNewSpeedR + fabs(lowestSampleR*release)+fastest;
muSpeedAR = muNewSpeedR / muSpeedAR;
}
else
{
if (fabs(lowestSampleR) > threshold)
{
muVaryR = threshold / fabs(lowestSampleR);
muAttackR = sqrt(fabs(muSpeedBR));
muCoefficientBR = muCoefficientBR * (muAttackR-1);
if (muVaryR < threshold)
{
muCoefficientBR = muCoefficientBR + threshold;
}
else
{
muCoefficientBR = muCoefficientBR + muVaryR;
}
muCoefficientBR = muCoefficientBR / muAttackR;
}
else
{
muCoefficientBR = muCoefficientBR * ((muSpeedBR * muSpeedBR)-1.0);
muCoefficientBR = muCoefficientBR + 1.0;
muCoefficientBR = muCoefficientBR / (muSpeedBR * muSpeedBR);
}
muNewSpeedR = muSpeedBR * (muSpeedBR-1);
muNewSpeedR = muNewSpeedR + fabs(lowestSampleR*release)+fastest;
muSpeedBR = muNewSpeedR / muSpeedBR;
}
//got coefficients, adjusted speeds for R
double coefficientL = highGainOffset;
if (flip) coefficientL += pow(muCoefficientAL,2);
else coefficientL += pow(muCoefficientBL,2);
inputSampleL *= coefficientL;
thickenL = (coefficientL/5)+punchinessL;//0.80;
thickenL = (1.0-wet)+(wet*thickenL);
double coefficientR = highGainOffset;
if (flip) coefficientR += pow(muCoefficientAR,2);
else coefficientR += pow(muCoefficientBR,2);
inputSampleR *= coefficientR;
thickenR = (coefficientR/5)+punchinessR;//0.80;
thickenR = (1.0-wet)+(wet*thickenR);
//applied compression with vari-vari-µ-µ-µ-µ-µ-µ-is-the-kitten-song o/~
//applied gain correction to control output level- tends to constrain sound rather than inflate it
double bridgerectifier = fabs(inputSampleL);
if (bridgerectifier > 1.2533141373155) bridgerectifier = 1.2533141373155;
bridgerectifier = sin(bridgerectifier * fabs(bridgerectifier)) / ((fabs(bridgerectifier) == 0.0) ?1:fabs(bridgerectifier));
//using Spiral instead of Density algorithm
if (inputSampleL > 0) inputSampleL = (inputSampleL*coefficientL)+(bridgerectifier*(1-coefficientL));
else inputSampleL = (inputSampleL*coefficientL)-(bridgerectifier*(1-coefficientL));
//second stage of overdrive to prevent overs and allow bloody loud extremeness
bridgerectifier = fabs(inputSampleR);
if (bridgerectifier > 1.2533141373155) bridgerectifier = 1.2533141373155;
bridgerectifier = sin(bridgerectifier * fabs(bridgerectifier)) / ((fabs(bridgerectifier) == 0.0) ?1:fabs(bridgerectifier));
//using Spiral instead of Density algorithm
if (inputSampleR > 0) inputSampleR = (inputSampleR*coefficientR)+(bridgerectifier*(1-coefficientR));
else inputSampleR = (inputSampleR*coefficientR)-(bridgerectifier*(1-coefficientR));
//second stage of overdrive to prevent overs and allow bloody loud extremeness
flip = !flip;
if (output < 1.0) {inputSampleL *= output;inputSampleR *= output;}
if (wet<1.0) {
inputSampleL = (drySampleL*(1.0-wet))+(inputSampleL*wet);
inputSampleR = (drySampleR*(1.0-wet))+(inputSampleR*wet);
}
//begin 32 bit stereo floating point dither
int expon; frexpf((float)inputSampleL, &expon);
fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5;
inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
frexpf((float)inputSampleR, &expon);
fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
//end 32 bit stereo floating point dither
*out1 = inputSampleL;
*out2 = inputSampleR;
*in1++;
*in2++;
*out1++;
*out2++;
}
}
void Pop::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames)
{
double* in1 = inputs[0];
double* in2 = inputs[1];
double* out1 = outputs[0];
double* out2 = outputs[1];
double overallscale = 1.0;
overallscale /= 44100.0;
overallscale *= getSampleRate();
double highGainOffset = pow(A,2)*0.023;
double threshold = 1.001 - (1.0-pow(1.0-A,5));
double muMakeupGain = sqrt(1.0 / threshold);
//gain settings around threshold
double release = (A*100000.0) + 300000.0;
int maxdelay = (int)(1450.0 * overallscale);
if (maxdelay > 9999) maxdelay = 9999;
release /= overallscale;
double fastest = sqrt(release);
//speed settings around release
double output = B;
double wet = C;
// µ µ µ µ µ µ µ µ µ µ µ µ is the kitten song o/~
while (--sampleFrames >= 0)
{
double inputSampleL = *in1;
double inputSampleR = *in2;
if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17;
if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17;
double drySampleL = inputSampleL;
double drySampleR = inputSampleR;
dL[delay] = inputSampleL;
dR[delay] = inputSampleR;
delay--;
if (delay < 0 || delay > maxdelay) {delay = maxdelay;}
//yes this is a second bounds check. it's cheap, check EVERY time
inputSampleL = (inputSampleL * thickenL) + (dL[delay] * (1.0-thickenL));
inputSampleR = (inputSampleR * thickenR) + (dR[delay] * (1.0-thickenR));
double lowestSampleL = inputSampleL;
if (fabs(inputSampleL) > fabs(previousL)) lowestSampleL = previousL;
if (fabs(lowestSampleL) > fabs(previous2L)) lowestSampleL = (lowestSampleL + previous2L) / 1.99;
if (fabs(lowestSampleL) > fabs(previous3L)) lowestSampleL = (lowestSampleL + previous3L) / 1.98;
if (fabs(lowestSampleL) > fabs(previous4L)) lowestSampleL = (lowestSampleL + previous4L) / 1.97;
if (fabs(lowestSampleL) > fabs(previous5L)) lowestSampleL = (lowestSampleL + previous5L) / 1.96;
previous5L = previous4L;
previous4L = previous3L;
previous3L = previous2L;
previous2L = previousL;
previousL = inputSampleL;
inputSampleL *= muMakeupGain;
double punchinessL = 0.95-fabs(inputSampleL*0.08);
if (punchinessL < 0.65) punchinessL = 0.65;
double lowestSampleR = inputSampleR;
if (fabs(inputSampleR) > fabs(previousR)) lowestSampleR = previousR;
if (fabs(lowestSampleR) > fabs(previous2R)) lowestSampleR = (lowestSampleR + previous2R) / 1.99;
if (fabs(lowestSampleR) > fabs(previous3R)) lowestSampleR = (lowestSampleR + previous3R) / 1.98;
if (fabs(lowestSampleR) > fabs(previous4R)) lowestSampleR = (lowestSampleR + previous4R) / 1.97;
if (fabs(lowestSampleR) > fabs(previous5R)) lowestSampleR = (lowestSampleR + previous5R) / 1.96;
previous5R = previous4R;
previous4R = previous3R;
previous3R = previous2R;
previous2R = previousR;
previousR = inputSampleR;
inputSampleR *= muMakeupGain;
double punchinessR = 0.95-fabs(inputSampleR*0.08);
if (punchinessR < 0.65) punchinessR = 0.65;
//adjust coefficients for L
if (flip)
{
if (fabs(lowestSampleL) > threshold)
{
muVaryL = threshold / fabs(lowestSampleL);
muAttackL = sqrt(fabs(muSpeedAL));
muCoefficientAL = muCoefficientAL * (muAttackL-1.0);
if (muVaryL < threshold)
{
muCoefficientAL = muCoefficientAL + threshold;
}
else
{
muCoefficientAL = muCoefficientAL + muVaryL;
}
muCoefficientAL = muCoefficientAL / muAttackL;
}
else
{
muCoefficientAL = muCoefficientAL * ((muSpeedAL * muSpeedAL)-1.0);
muCoefficientAL = muCoefficientAL + 1.0;
muCoefficientAL = muCoefficientAL / (muSpeedAL * muSpeedAL);
}
muNewSpeedL = muSpeedAL * (muSpeedAL-1);
muNewSpeedL = muNewSpeedL + fabs(lowestSampleL*release)+fastest;
muSpeedAL = muNewSpeedL / muSpeedAL;
}
else
{
if (fabs(lowestSampleL) > threshold)
{
muVaryL = threshold / fabs(lowestSampleL);
muAttackL = sqrt(fabs(muSpeedBL));
muCoefficientBL = muCoefficientBL * (muAttackL-1);
if (muVaryL < threshold)
{
muCoefficientBL = muCoefficientBL + threshold;
}
else
{
muCoefficientBL = muCoefficientBL + muVaryL;
}
muCoefficientBL = muCoefficientBL / muAttackL;
}
else
{
muCoefficientBL = muCoefficientBL * ((muSpeedBL * muSpeedBL)-1.0);
muCoefficientBL = muCoefficientBL + 1.0;
muCoefficientBL = muCoefficientBL / (muSpeedBL * muSpeedBL);
}
muNewSpeedL = muSpeedBL * (muSpeedBL-1);
muNewSpeedL = muNewSpeedL + fabs(lowestSampleL*release)+fastest;
muSpeedBL = muNewSpeedL / muSpeedBL;
}
//got coefficients, adjusted speeds for L
//adjust coefficients for R
if (flip)
{
if (fabs(lowestSampleR) > threshold)
{
muVaryR = threshold / fabs(lowestSampleR);
muAttackR = sqrt(fabs(muSpeedAR));
muCoefficientAR = muCoefficientAR * (muAttackR-1.0);
if (muVaryR < threshold)
{
muCoefficientAR = muCoefficientAR + threshold;
}
else
{
muCoefficientAR = muCoefficientAR + muVaryR;
}
muCoefficientAR = muCoefficientAR / muAttackR;
}
else
{
muCoefficientAR = muCoefficientAR * ((muSpeedAR * muSpeedAR)-1.0);
muCoefficientAR = muCoefficientAR + 1.0;
muCoefficientAR = muCoefficientAR / (muSpeedAR * muSpeedAR);
}
muNewSpeedR = muSpeedAR * (muSpeedAR-1);
muNewSpeedR = muNewSpeedR + fabs(lowestSampleR*release)+fastest;
muSpeedAR = muNewSpeedR / muSpeedAR;
}
else
{
if (fabs(lowestSampleR) > threshold)
{
muVaryR = threshold / fabs(lowestSampleR);
muAttackR = sqrt(fabs(muSpeedBR));
muCoefficientBR = muCoefficientBR * (muAttackR-1);
if (muVaryR < threshold)
{
muCoefficientBR = muCoefficientBR + threshold;
}
else
{
muCoefficientBR = muCoefficientBR + muVaryR;
}
muCoefficientBR = muCoefficientBR / muAttackR;
}
else
{
muCoefficientBR = muCoefficientBR * ((muSpeedBR * muSpeedBR)-1.0);
muCoefficientBR = muCoefficientBR + 1.0;
muCoefficientBR = muCoefficientBR / (muSpeedBR * muSpeedBR);
}
muNewSpeedR = muSpeedBR * (muSpeedBR-1);
muNewSpeedR = muNewSpeedR + fabs(lowestSampleR*release)+fastest;
muSpeedBR = muNewSpeedR / muSpeedBR;
}
//got coefficients, adjusted speeds for R
double coefficientL = highGainOffset;
if (flip) coefficientL += pow(muCoefficientAL,2);
else coefficientL += pow(muCoefficientBL,2);
inputSampleL *= coefficientL;
thickenL = (coefficientL/5)+punchinessL;//0.80;
thickenL = (1.0-wet)+(wet*thickenL);
double coefficientR = highGainOffset;
if (flip) coefficientR += pow(muCoefficientAR,2);
else coefficientR += pow(muCoefficientBR,2);
inputSampleR *= coefficientR;
thickenR = (coefficientR/5)+punchinessR;//0.80;
thickenR = (1.0-wet)+(wet*thickenR);
//applied compression with vari-vari-µ-µ-µ-µ-µ-µ-is-the-kitten-song o/~
//applied gain correction to control output level- tends to constrain sound rather than inflate it
double bridgerectifier = fabs(inputSampleL);
if (bridgerectifier > 1.2533141373155) bridgerectifier = 1.2533141373155;
bridgerectifier = sin(bridgerectifier * fabs(bridgerectifier)) / ((fabs(bridgerectifier) == 0.0) ?1:fabs(bridgerectifier));
//using Spiral instead of Density algorithm
if (inputSampleL > 0) inputSampleL = (inputSampleL*coefficientL)+(bridgerectifier*(1-coefficientL));
else inputSampleL = (inputSampleL*coefficientL)-(bridgerectifier*(1-coefficientL));
//second stage of overdrive to prevent overs and allow bloody loud extremeness
bridgerectifier = fabs(inputSampleR);
if (bridgerectifier > 1.2533141373155) bridgerectifier = 1.2533141373155;
bridgerectifier = sin(bridgerectifier * fabs(bridgerectifier)) / ((fabs(bridgerectifier) == 0.0) ?1:fabs(bridgerectifier));
//using Spiral instead of Density algorithm
if (inputSampleR > 0) inputSampleR = (inputSampleR*coefficientR)+(bridgerectifier*(1-coefficientR));
else inputSampleR = (inputSampleR*coefficientR)-(bridgerectifier*(1-coefficientR));
//second stage of overdrive to prevent overs and allow bloody loud extremeness
flip = !flip;
if (output < 1.0) {inputSampleL *= output;inputSampleR *= output;}
if (wet<1.0) {
inputSampleL = (drySampleL*(1.0-wet))+(inputSampleL*wet);
inputSampleR = (drySampleR*(1.0-wet))+(inputSampleR*wet);
}
//begin 64 bit stereo floating point dither
//int expon; frexp((double)inputSampleL, &expon);
fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5;
//inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
//frexp((double)inputSampleR, &expon);
fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
//inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
//end 64 bit stereo floating point dither
*out1 = inputSampleL;
*out2 = inputSampleR;
*in1++;
*in2++;
*out1++;
*out2++;
}
}
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