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airwindows/plugins/MacVST/Pop2/source/Pop2Proc.cpp
Christopher Johnson f06250c082 Clarifying Licensing in boilerplate code generation
2022-11-21 09:20:21 -05:00

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/* ========================================
* Pop2 - Pop2.h
* Copyright (c) 2016 airwindows, Airwindows uses the MIT license
* ======================================== */
#ifndef __Pop2_H
#include "Pop2.h"
#endif
void Pop2::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();
int spacing = floor(overallscale); //should give us working basic scaling, usually 2 or 4
if (spacing < 1) spacing = 1; if (spacing > 16) spacing = 16;
double threshold = 1.0 - ((1.0-pow(1.0-A,2))*0.9);
double attack = ((pow(B,4)*100000.0)+10.0)*overallscale;
double release = ((pow(C,5)*2000000.0)+20.0)*overallscale;
double maxRelease = release * 4.0;
double muPreGain = 1.0/threshold;
double muMakeupGain = sqrt(1.0 / threshold)*D;
double wet = E;
//compressor section
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;
//begin compressor section
inputSampleL *= muPreGain;
inputSampleR *= muPreGain;
//adjust coefficients for L
if (flip) {
if (fabs(inputSampleL) > threshold) {
muVaryL = threshold / fabs(inputSampleL);
muAttackL = sqrt(fabs(muSpeedAL));
muCoefficientAL = muCoefficientAL * (muAttackL-1.0);
if (muVaryL < threshold) muCoefficientAL = muCoefficientAL + threshold;
else muCoefficientAL = muCoefficientAL + muVaryL;
muCoefficientAL = muCoefficientAL / muAttackL;
muNewSpeedL = muSpeedAL * (muSpeedAL-1.0);
muNewSpeedL = muNewSpeedL + release;
muSpeedAL = muNewSpeedL / muSpeedAL;
if (muSpeedAL > maxRelease) muSpeedAL = maxRelease;
} else {
muCoefficientAL = muCoefficientAL * ((muSpeedAL * muSpeedAL)-1.0);
muCoefficientAL = muCoefficientAL + 1.0;
muCoefficientAL = muCoefficientAL / (muSpeedAL * muSpeedAL);
muNewSpeedL = muSpeedAL * (muSpeedAL-1.0);
muNewSpeedL = muNewSpeedL + attack;
muSpeedAL = muNewSpeedL / muSpeedAL;}
} else {
if (fabs(inputSampleL) > threshold) {
muVaryL = threshold / fabs(inputSampleL);
muAttackL = sqrt(fabs(muSpeedBL));
muCoefficientBL = muCoefficientBL * (muAttackL-1);
if (muVaryL < threshold) muCoefficientBL = muCoefficientBL + threshold;
else muCoefficientBL = muCoefficientBL + muVaryL;
muCoefficientBL = muCoefficientBL / muAttackL;
muNewSpeedL = muSpeedBL * (muSpeedBL-1.0);
muNewSpeedL = muNewSpeedL + release;
muSpeedBL = muNewSpeedL / muSpeedBL;
if (muSpeedBL > maxRelease) muSpeedBL = maxRelease;
} else {
muCoefficientBL = muCoefficientBL * ((muSpeedBL * muSpeedBL)-1.0);
muCoefficientBL = muCoefficientBL + 1.0;
muCoefficientBL = muCoefficientBL / (muSpeedBL * muSpeedBL);
muNewSpeedL = muSpeedBL * (muSpeedBL-1.0);
muNewSpeedL = muNewSpeedL + attack;
muSpeedBL = muNewSpeedL / muSpeedBL;
}
}
//got coefficients, adjusted speeds for L
//adjust coefficients for R
if (flip) {
if (fabs(inputSampleR) > threshold) {
muVaryR = threshold / fabs(inputSampleR);
muAttackR = sqrt(fabs(muSpeedAR));
muCoefficientAR = muCoefficientAR * (muAttackR-1.0);
if (muVaryR < threshold) muCoefficientAR = muCoefficientAR + threshold;
else muCoefficientAR = muCoefficientAR + muVaryR;
muCoefficientAR = muCoefficientAR / muAttackR;
muNewSpeedR = muSpeedAR * (muSpeedAR-1.0);
muNewSpeedR = muNewSpeedR + release;
muSpeedAR = muNewSpeedR / muSpeedAR;
if (muSpeedAR > maxRelease) muSpeedAR = maxRelease;
} else {
muCoefficientAR = muCoefficientAR * ((muSpeedAR * muSpeedAR)-1.0);
muCoefficientAR = muCoefficientAR + 1.0;
muCoefficientAR = muCoefficientAR / (muSpeedAR * muSpeedAR);
muNewSpeedR = muSpeedAR * (muSpeedAR-1.0);
muNewSpeedR = muNewSpeedR + attack;
muSpeedAR = muNewSpeedR / muSpeedAR;
}
} else {
if (fabs(inputSampleR) > threshold) {
muVaryR = threshold / fabs(inputSampleR);
muAttackR = sqrt(fabs(muSpeedBR));
muCoefficientBR = muCoefficientBR * (muAttackR-1);
if (muVaryR < threshold) muCoefficientBR = muCoefficientBR + threshold;
else muCoefficientBR = muCoefficientBR + muVaryR;
muCoefficientBR = muCoefficientBR / muAttackR;
muNewSpeedR = muSpeedBR * (muSpeedBR-1.0);
muNewSpeedR = muNewSpeedR + release;
muSpeedBR = muNewSpeedR / muSpeedBR;
if (muSpeedBR > maxRelease) muSpeedBR = maxRelease;
} else {
muCoefficientBR = muCoefficientBR * ((muSpeedBR * muSpeedBR)-1.0);
muCoefficientBR = muCoefficientBR + 1.0;
muCoefficientBR = muCoefficientBR / (muSpeedBR * muSpeedBR);
muNewSpeedR = muSpeedBR * (muSpeedBR-1.0);
muNewSpeedR = muNewSpeedR + attack;
muSpeedBR = muNewSpeedR / muSpeedBR;
}
}
//got coefficients, adjusted speeds for R
if (flip) {
inputSampleL *= pow(muCoefficientAL,2);
inputSampleR *= pow(muCoefficientAR,2);
} else {
inputSampleL *= pow(muCoefficientBL,2);
inputSampleR *= pow(muCoefficientBR,2);
}
inputSampleL *= muMakeupGain;
inputSampleR *= muMakeupGain;
flip = !flip;
//end compressor section
//begin ClipOnly2 stereo as a little, compressed chunk that can be dropped into code
if (inputSampleL > 4.0) inputSampleL = 4.0; if (inputSampleL < -4.0) inputSampleL = -4.0;
if (wasPosClipL == true) { //current will be over
if (inputSampleL<lastSampleL) lastSampleL=0.7058208+(inputSampleL*0.2609148);
else lastSampleL = 0.2491717+(lastSampleL*0.7390851);
} wasPosClipL = false;
if (inputSampleL>0.9549925859) {wasPosClipL=true;inputSampleL=0.7058208+(lastSampleL*0.2609148);}
if (wasNegClipL == true) { //current will be -over
if (inputSampleL > lastSampleL) lastSampleL=-0.7058208+(inputSampleL*0.2609148);
else lastSampleL=-0.2491717+(lastSampleL*0.7390851);
} wasNegClipL = false;
if (inputSampleL<-0.9549925859) {wasNegClipL=true;inputSampleL=-0.7058208+(lastSampleL*0.2609148);}
intermediateL[spacing] = inputSampleL;
inputSampleL = lastSampleL; //Latency is however many samples equals one 44.1k sample
for (int x = spacing; x > 0; x--) intermediateL[x-1] = intermediateL[x];
lastSampleL = intermediateL[0]; //run a little buffer to handle this
if (inputSampleR > 4.0) inputSampleR = 4.0; if (inputSampleR < -4.0) inputSampleR = -4.0;
if (wasPosClipR == true) { //current will be over
if (inputSampleR<lastSampleR) lastSampleR=0.7058208+(inputSampleR*0.2609148);
else lastSampleR = 0.2491717+(lastSampleR*0.7390851);
} wasPosClipR = false;
if (inputSampleR>0.9549925859) {wasPosClipR=true;inputSampleR=0.7058208+(lastSampleR*0.2609148);}
if (wasNegClipR == true) { //current will be -over
if (inputSampleR > lastSampleR) lastSampleR=-0.7058208+(inputSampleR*0.2609148);
else lastSampleR=-0.2491717+(lastSampleR*0.7390851);
} wasNegClipR = false;
if (inputSampleR<-0.9549925859) {wasNegClipR=true;inputSampleR=-0.7058208+(lastSampleR*0.2609148);}
intermediateR[spacing] = inputSampleR;
inputSampleR = lastSampleR; //Latency is however many samples equals one 44.1k sample
for (int x = spacing; x > 0; x--) intermediateR[x-1] = intermediateR[x];
lastSampleR = intermediateR[0]; //run a little buffer to handle this
//end ClipOnly2 stereo as a little, compressed chunk that can be dropped into code
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 Pop2::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();
int spacing = floor(overallscale); //should give us working basic scaling, usually 2 or 4
if (spacing < 1) spacing = 1; if (spacing > 16) spacing = 16;
double threshold = 1.0 - ((1.0-pow(1.0-A,2))*0.9);
double attack = ((pow(B,4)*100000.0)+10.0)*overallscale;
double release = ((pow(C,5)*2000000.0)+20.0)*overallscale;
double maxRelease = release * 4.0;
double muPreGain = 1.0/threshold;
double muMakeupGain = sqrt(1.0 / threshold)*D;
double wet = E;
//compressor section
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;
//begin compressor section
inputSampleL *= muPreGain;
inputSampleR *= muPreGain;
//adjust coefficients for L
if (flip) {
if (fabs(inputSampleL) > threshold) {
muVaryL = threshold / fabs(inputSampleL);
muAttackL = sqrt(fabs(muSpeedAL));
muCoefficientAL = muCoefficientAL * (muAttackL-1.0);
if (muVaryL < threshold) muCoefficientAL = muCoefficientAL + threshold;
else muCoefficientAL = muCoefficientAL + muVaryL;
muCoefficientAL = muCoefficientAL / muAttackL;
muNewSpeedL = muSpeedAL * (muSpeedAL-1.0);
muNewSpeedL = muNewSpeedL + release;
muSpeedAL = muNewSpeedL / muSpeedAL;
if (muSpeedAL > maxRelease) muSpeedAL = maxRelease;
} else {
muCoefficientAL = muCoefficientAL * ((muSpeedAL * muSpeedAL)-1.0);
muCoefficientAL = muCoefficientAL + 1.0;
muCoefficientAL = muCoefficientAL / (muSpeedAL * muSpeedAL);
muNewSpeedL = muSpeedAL * (muSpeedAL-1.0);
muNewSpeedL = muNewSpeedL + attack;
muSpeedAL = muNewSpeedL / muSpeedAL;}
} else {
if (fabs(inputSampleL) > threshold) {
muVaryL = threshold / fabs(inputSampleL);
muAttackL = sqrt(fabs(muSpeedBL));
muCoefficientBL = muCoefficientBL * (muAttackL-1);
if (muVaryL < threshold) muCoefficientBL = muCoefficientBL + threshold;
else muCoefficientBL = muCoefficientBL + muVaryL;
muCoefficientBL = muCoefficientBL / muAttackL;
muNewSpeedL = muSpeedBL * (muSpeedBL-1.0);
muNewSpeedL = muNewSpeedL + release;
muSpeedBL = muNewSpeedL / muSpeedBL;
if (muSpeedBL > maxRelease) muSpeedBL = maxRelease;
} else {
muCoefficientBL = muCoefficientBL * ((muSpeedBL * muSpeedBL)-1.0);
muCoefficientBL = muCoefficientBL + 1.0;
muCoefficientBL = muCoefficientBL / (muSpeedBL * muSpeedBL);
muNewSpeedL = muSpeedBL * (muSpeedBL-1.0);
muNewSpeedL = muNewSpeedL + attack;
muSpeedBL = muNewSpeedL / muSpeedBL;
}
}
//got coefficients, adjusted speeds for L
//adjust coefficients for R
if (flip) {
if (fabs(inputSampleR) > threshold) {
muVaryR = threshold / fabs(inputSampleR);
muAttackR = sqrt(fabs(muSpeedAR));
muCoefficientAR = muCoefficientAR * (muAttackR-1.0);
if (muVaryR < threshold) muCoefficientAR = muCoefficientAR + threshold;
else muCoefficientAR = muCoefficientAR + muVaryR;
muCoefficientAR = muCoefficientAR / muAttackR;
muNewSpeedR = muSpeedAR * (muSpeedAR-1.0);
muNewSpeedR = muNewSpeedR + release;
muSpeedAR = muNewSpeedR / muSpeedAR;
if (muSpeedAR > maxRelease) muSpeedAR = maxRelease;
} else {
muCoefficientAR = muCoefficientAR * ((muSpeedAR * muSpeedAR)-1.0);
muCoefficientAR = muCoefficientAR + 1.0;
muCoefficientAR = muCoefficientAR / (muSpeedAR * muSpeedAR);
muNewSpeedR = muSpeedAR * (muSpeedAR-1.0);
muNewSpeedR = muNewSpeedR + attack;
muSpeedAR = muNewSpeedR / muSpeedAR;
}
} else {
if (fabs(inputSampleR) > threshold) {
muVaryR = threshold / fabs(inputSampleR);
muAttackR = sqrt(fabs(muSpeedBR));
muCoefficientBR = muCoefficientBR * (muAttackR-1);
if (muVaryR < threshold) muCoefficientBR = muCoefficientBR + threshold;
else muCoefficientBR = muCoefficientBR + muVaryR;
muCoefficientBR = muCoefficientBR / muAttackR;
muNewSpeedR = muSpeedBR * (muSpeedBR-1.0);
muNewSpeedR = muNewSpeedR + release;
muSpeedBR = muNewSpeedR / muSpeedBR;
if (muSpeedBR > maxRelease) muSpeedBR = maxRelease;
} else {
muCoefficientBR = muCoefficientBR * ((muSpeedBR * muSpeedBR)-1.0);
muCoefficientBR = muCoefficientBR + 1.0;
muCoefficientBR = muCoefficientBR / (muSpeedBR * muSpeedBR);
muNewSpeedR = muSpeedBR * (muSpeedBR-1.0);
muNewSpeedR = muNewSpeedR + attack;
muSpeedBR = muNewSpeedR / muSpeedBR;
}
}
//got coefficients, adjusted speeds for R
if (flip) {
inputSampleL *= pow(muCoefficientAL,2);
inputSampleR *= pow(muCoefficientAR,2);
} else {
inputSampleL *= pow(muCoefficientBL,2);
inputSampleR *= pow(muCoefficientBR,2);
}
inputSampleL *= muMakeupGain;
inputSampleR *= muMakeupGain;
flip = !flip;
//end compressor section
//begin ClipOnly2 stereo as a little, compressed chunk that can be dropped into code
if (inputSampleL > 4.0) inputSampleL = 4.0; if (inputSampleL < -4.0) inputSampleL = -4.0;
if (wasPosClipL == true) { //current will be over
if (inputSampleL<lastSampleL) lastSampleL=0.7058208+(inputSampleL*0.2609148);
else lastSampleL = 0.2491717+(lastSampleL*0.7390851);
} wasPosClipL = false;
if (inputSampleL>0.9549925859) {wasPosClipL=true;inputSampleL=0.7058208+(lastSampleL*0.2609148);}
if (wasNegClipL == true) { //current will be -over
if (inputSampleL > lastSampleL) lastSampleL=-0.7058208+(inputSampleL*0.2609148);
else lastSampleL=-0.2491717+(lastSampleL*0.7390851);
} wasNegClipL = false;
if (inputSampleL<-0.9549925859) {wasNegClipL=true;inputSampleL=-0.7058208+(lastSampleL*0.2609148);}
intermediateL[spacing] = inputSampleL;
inputSampleL = lastSampleL; //Latency is however many samples equals one 44.1k sample
for (int x = spacing; x > 0; x--) intermediateL[x-1] = intermediateL[x];
lastSampleL = intermediateL[0]; //run a little buffer to handle this
if (inputSampleR > 4.0) inputSampleR = 4.0; if (inputSampleR < -4.0) inputSampleR = -4.0;
if (wasPosClipR == true) { //current will be over
if (inputSampleR<lastSampleR) lastSampleR=0.7058208+(inputSampleR*0.2609148);
else lastSampleR = 0.2491717+(lastSampleR*0.7390851);
} wasPosClipR = false;
if (inputSampleR>0.9549925859) {wasPosClipR=true;inputSampleR=0.7058208+(lastSampleR*0.2609148);}
if (wasNegClipR == true) { //current will be -over
if (inputSampleR > lastSampleR) lastSampleR=-0.7058208+(inputSampleR*0.2609148);
else lastSampleR=-0.2491717+(lastSampleR*0.7390851);
} wasNegClipR = false;
if (inputSampleR<-0.9549925859) {wasNegClipR=true;inputSampleR=-0.7058208+(lastSampleR*0.2609148);}
intermediateR[spacing] = inputSampleR;
inputSampleR = lastSampleR; //Latency is however many samples equals one 44.1k sample
for (int x = spacing; x > 0; x--) intermediateR[x-1] = intermediateR[x];
lastSampleR = intermediateR[0]; //run a little buffer to handle this
//end ClipOnly2 stereo as a little, compressed chunk that can be dropped into code
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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