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airwindows/plugins/MacVST/DeRez4/source/DeRez4Proc.cpp
Christopher Johnson e82002fed5 Dynamics3
2026-06-20 20:10:55 -04:00

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/* ========================================
* DeRez4 - DeRez4.h
* Copyright (c) airwindows, Airwindows uses the MIT license
* ======================================== */
#ifndef __DeRez4_H
#include "DeRez4.h"
#endif
void DeRez4::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 Sderez = pow(A,2.0+overallscale);
int stepped = 999999; if (Sderez > 0.000001) stepped = (int)(1.0/Sderez);
if (Sderez > 0.0) Sderez = 0.99999999 / stepped;
double Strim = 1.0-(Sderez*((double)stepped/(stepped+1.0)));
double brightDerez = (1.0-pow(B,2.0))*4.0*overallscale;
stepped = 999999;
if (brightDerez > 1.0) {stepped = (int)brightDerez; brightDerez = 0.99999999 / stepped;}
else brightDerez = 1.1;
double brightTrim = 1.0-(brightDerez*((double)stepped/(stepped+1.0)));
double bassRef = pow(C,4.0);
double bassisDerez = (bassRef*0.25) / overallscale;
stepped = 999999; if (bassisDerez > 0.000001) stepped = (int)(1.0/bassisDerez);
if (bassisDerez > 0.0) bassisDerez = 0.99999999 / stepped;
double bassisTrim = 1.0-(bassisDerez*((double)stepped/(stepped+1.0)));
double output = D;
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;
if (brightDerez < 1.0){
bezEQ[bez_HMcycle][0] += brightDerez;
bezEQ[bez_HMAL][0] += (inputSampleL * 0.5 * brightDerez);
bezEQ[bez_HMAR][0] += (inputSampleR * 0.5 * brightDerez);
if (bezEQ[bez_HMcycle][0] > brightTrim) {
bezEQ[bez_HMDL][0] = bezEQ[bez_HMCL][0]; bezEQ[bez_HMCL][0] = bezEQ[bez_HMBL][0];
bezEQ[bez_HMBL][0] = bezEQ[bez_HMAL][0]*(0.5-(brightDerez*0.082));
bezEQ[bez_HMAL][0] = 0.0;
bezEQ[bez_HMDR][0] = bezEQ[bez_HMCR][0]; bezEQ[bez_HMCR][0] = bezEQ[bez_HMBR][0];
bezEQ[bez_HMBR][0] = bezEQ[bez_HMAR][0]*(0.5-(brightDerez*0.082));
bezEQ[bez_HMAR][0] = 0.0;
bezEQ[bez_HMcycle][0] = 0.0;
}
double X = bezEQ[bez_HMcycle][0];
inputSampleL = bezEQ[bez_HMCL][0]+(bezEQ[bez_HMDL][0]*(1.0-X)*(1.0-X));
inputSampleL += (bezEQ[bez_HMCL][0]*2.0*(1.0-X)*X)+(bezEQ[bez_HMBL][0]*X*X);
inputSampleL /= brightTrim;
inputSampleR = bezEQ[bez_HMCR][0]+(bezEQ[bez_HMDR][0]*(1.0-X)*(1.0-X));
inputSampleR += (bezEQ[bez_HMCR][0]*2.0*(1.0-X)*X)+(bezEQ[bez_HMBR][0]*X*X);
inputSampleR /= brightTrim;
}
if (bassisDerez > 0.0) {
bezEQ[bez_LMcycle][0] += bassisDerez;
bezEQ[bez_LMAL][0] += (inputSampleL * bassisDerez);
bezEQ[bez_LMAR][0] += (inputSampleR * bassisDerez);
if (bezEQ[bez_LMcycle][0] > bassisTrim) {
bezEQ[bez_LMDL][0] = bezEQ[bez_LMCL][0]; bezEQ[bez_LMCL][0] = bezEQ[bez_LMBL][0];
bezEQ[bez_LMBL][0] = bezEQ[bez_LMAL][0]*(0.5-(bassisDerez*0.082));
bezEQ[bez_LMAL][0] = 0.0;
bezEQ[bez_LMDR][0] = bezEQ[bez_LMCR][0]; bezEQ[bez_LMCR][0] = bezEQ[bez_LMBR][0];
bezEQ[bez_LMBR][0] = bezEQ[bez_LMAR][0]*(0.5-(bassisDerez*0.082));
bezEQ[bez_LMAR][0] = 0.0;
bezEQ[bez_LMcycle][0] = 0.0;
}
double X = bezEQ[bez_LMcycle][0];
inputSampleL -= (bezEQ[bez_LMCL][0]+(bezEQ[bez_LMDL][0]*(1.0-X)*(1.0-X)))*0.5;
inputSampleL -= ((bezEQ[bez_LMCL][0]*2.0*(1.0-X)*X)+(bezEQ[bez_LMBL][0]*X*X))*0.5;
inputSampleL /= bassisTrim;
inputSampleR -= (bezEQ[bez_LMCR][0]+(bezEQ[bez_LMDR][0]*(1.0-X)*(1.0-X)))*0.5;
inputSampleR -= ((bezEQ[bez_LMCR][0]*2.0*(1.0-X)*X)+(bezEQ[bez_LMBR][0]*X*X))*0.5;
inputSampleR /= bassisTrim;
}
if (Sderez < 1.0) {
pointCycle += Sderez;
if (pointCycle > 0.9999999) {
pointAL = pointBL;
pointBL = inputSampleL;
pointAR = pointBR;
pointBR = inputSampleR;
pointCycle = 0.0;
}
double X = pointCycle*Strim;
if (Sderez > 0.0) {
inputSampleL = pointAL+((pointBL-pointAL)*X);
inputSampleL /= Strim;
inputSampleR = pointAR+((pointBR-pointAR)*X);
inputSampleR /= Strim;
} else {
inputSampleL = 0.0;
inputSampleR = 0.0;
}
}
if (brightDerez < 1.0) {
bezEQ[bez_HMcycle][1] += brightDerez;
bezEQ[bez_HMAL][1] += (inputSampleL * brightDerez);
bezEQ[bez_HMAR][1] += (inputSampleR * brightDerez);
if (bezEQ[bez_HMcycle][1] > brightTrim) {
bezEQ[bez_HMDL][1] = bezEQ[bez_HMCL][1]; bezEQ[bez_HMCL][1] = bezEQ[bez_HMBL][1];
bezEQ[bez_HMBL][1] = bezEQ[bez_HMAL][1]*(0.5-(brightDerez*0.082));
bezEQ[bez_HMAL][1] = 0.0;
bezEQ[bez_HMDR][1] = bezEQ[bez_HMCR][1]; bezEQ[bez_HMCR][1] = bezEQ[bez_HMBR][1];
bezEQ[bez_HMBR][1] = bezEQ[bez_HMAR][1]*(0.5-(brightDerez*0.082));
bezEQ[bez_HMAR][1] = 0.0; bezEQ[bez_HMcycle][1] = 0.0;
}
double X = bezEQ[bez_HMcycle][1];
inputSampleL = bezEQ[bez_HMCL][1]+(bezEQ[bez_HMDL][1]*(1.0-X)*(1.0-X));
inputSampleL += (bezEQ[bez_HMCL][1]*2.0*(1.0-X)*X)+(bezEQ[bez_HMBL][1]*X*X);
inputSampleL /= brightTrim;
inputSampleR = bezEQ[bez_HMCR][1]+(bezEQ[bez_HMDR][1]*(1.0-X)*(1.0-X));
inputSampleR += (bezEQ[bez_HMCR][1]*2.0*(1.0-X)*X)+(bezEQ[bez_HMBR][1]*X*X);
inputSampleR /= brightTrim;
}
if (bassisDerez > 0.0) {
bezEQ[bez_LMcycle][1] += bassisDerez;
bezEQ[bez_LMAL][1] += (inputSampleL * bassisDerez);
bezEQ[bez_LMAR][1] += (inputSampleR * bassisDerez);
if (bezEQ[bez_LMcycle][1] > bassisTrim) {
bezEQ[bez_LMDL][1] = bezEQ[bez_LMCL][1]; bezEQ[bez_LMCL][1] = bezEQ[bez_LMBL][1];
bezEQ[bez_LMBL][1] = bezEQ[bez_LMAL][1]*(0.5-(bassisDerez*0.082));
bezEQ[bez_LMAL][1] = 0.0;
bezEQ[bez_LMDR][1] = bezEQ[bez_LMCR][1]; bezEQ[bez_LMCR][1] = bezEQ[bez_LMBR][1];
bezEQ[bez_LMBR][1] = bezEQ[bez_LMAR][1]*(0.5-(bassisDerez*0.082));
bezEQ[bez_LMAR][1] = 0.0; bezEQ[bez_LMcycle][1] = 0.0;
}
double X = bezEQ[bez_LMcycle][1];
inputSampleL -= (bezEQ[bez_LMCL][1]+(bezEQ[bez_LMDL][1]*(1.0-X)*(1.0-X)))*0.5;
inputSampleL -= ((bezEQ[bez_LMCL][1]*2.0*(1.0-X)*X)+(bezEQ[bez_LMBL][1]*X*X))*0.5;
inputSampleL /= bassisTrim;
inputSampleR -= (bezEQ[bez_LMCR][1]+(bezEQ[bez_LMDR][1]*(1.0-X)*(1.0-X)))*0.5;
inputSampleR -= ((bezEQ[bez_LMCR][1]*2.0*(1.0-X)*X)+(bezEQ[bez_LMBR][1]*X*X))*0.5;
inputSampleR /= bassisTrim;
}
if (output < 1.0) {
inputSampleL *= output;
inputSampleR *= output;
}
//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)) * 3.553e-44l * pow(2,expon+62));
frexpf((float)inputSampleR, &expon);
fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
if (fpdL-fpdR < 1073741824 || fpdR-fpdL < 1073741824) {
fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;}
inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 3.553e-44l * pow(2,expon+62));
*out1 = inputSampleL;
*out2 = inputSampleR;
in1++;
in2++;
out1++;
out2++;
}
}
void DeRez4::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 Sderez = pow(A,2.0+overallscale);
int stepped = 999999; if (Sderez > 0.000001) stepped = (int)(1.0/Sderez);
if (Sderez > 0.0) Sderez = 0.99999999 / stepped;
double Strim = 1.0-(Sderez*((double)stepped/(stepped+1.0)));
double brightDerez = (1.0-pow(B,2.0))*4.0*overallscale;
stepped = 999999;
if (brightDerez > 1.0) {stepped = (int)brightDerez; brightDerez = 0.99999999 / stepped;}
else brightDerez = 1.1;
double brightTrim = 1.0-(brightDerez*((double)stepped/(stepped+1.0)));
double bassRef = pow(C,4.0);
double bassisDerez = (bassRef*0.25) / overallscale;
stepped = 999999; if (bassisDerez > 0.000001) stepped = (int)(1.0/bassisDerez);
if (bassisDerez > 0.0) bassisDerez = 0.99999999 / stepped;
double bassisTrim = 1.0-(bassisDerez*((double)stepped/(stepped+1.0)));
double output = D;
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;
if (brightDerez < 1.0){
bezEQ[bez_HMcycle][0] += brightDerez;
bezEQ[bez_HMAL][0] += (inputSampleL * 0.5 * brightDerez);
bezEQ[bez_HMAR][0] += (inputSampleR * 0.5 * brightDerez);
if (bezEQ[bez_HMcycle][0] > brightTrim) {
bezEQ[bez_HMDL][0] = bezEQ[bez_HMCL][0]; bezEQ[bez_HMCL][0] = bezEQ[bez_HMBL][0];
bezEQ[bez_HMBL][0] = bezEQ[bez_HMAL][0]*(0.5-(brightDerez*0.082));
bezEQ[bez_HMAL][0] = 0.0;
bezEQ[bez_HMDR][0] = bezEQ[bez_HMCR][0]; bezEQ[bez_HMCR][0] = bezEQ[bez_HMBR][0];
bezEQ[bez_HMBR][0] = bezEQ[bez_HMAR][0]*(0.5-(brightDerez*0.082));
bezEQ[bez_HMAR][0] = 0.0;
bezEQ[bez_HMcycle][0] = 0.0;
}
double X = bezEQ[bez_HMcycle][0];
inputSampleL = bezEQ[bez_HMCL][0]+(bezEQ[bez_HMDL][0]*(1.0-X)*(1.0-X));
inputSampleL += (bezEQ[bez_HMCL][0]*2.0*(1.0-X)*X)+(bezEQ[bez_HMBL][0]*X*X);
inputSampleL /= brightTrim;
inputSampleR = bezEQ[bez_HMCR][0]+(bezEQ[bez_HMDR][0]*(1.0-X)*(1.0-X));
inputSampleR += (bezEQ[bez_HMCR][0]*2.0*(1.0-X)*X)+(bezEQ[bez_HMBR][0]*X*X);
inputSampleR /= brightTrim;
}
if (bassisDerez > 0.0) {
bezEQ[bez_LMcycle][0] += bassisDerez;
bezEQ[bez_LMAL][0] += (inputSampleL * bassisDerez);
bezEQ[bez_LMAR][0] += (inputSampleR * bassisDerez);
if (bezEQ[bez_LMcycle][0] > bassisTrim) {
bezEQ[bez_LMDL][0] = bezEQ[bez_LMCL][0]; bezEQ[bez_LMCL][0] = bezEQ[bez_LMBL][0];
bezEQ[bez_LMBL][0] = bezEQ[bez_LMAL][0]*(0.5-(bassisDerez*0.082));
bezEQ[bez_LMAL][0] = 0.0;
bezEQ[bez_LMDR][0] = bezEQ[bez_LMCR][0]; bezEQ[bez_LMCR][0] = bezEQ[bez_LMBR][0];
bezEQ[bez_LMBR][0] = bezEQ[bez_LMAR][0]*(0.5-(bassisDerez*0.082));
bezEQ[bez_LMAR][0] = 0.0;
bezEQ[bez_LMcycle][0] = 0.0;
}
double X = bezEQ[bez_LMcycle][0];
inputSampleL -= (bezEQ[bez_LMCL][0]+(bezEQ[bez_LMDL][0]*(1.0-X)*(1.0-X)))*0.5;
inputSampleL -= ((bezEQ[bez_LMCL][0]*2.0*(1.0-X)*X)+(bezEQ[bez_LMBL][0]*X*X))*0.5;
inputSampleL /= bassisTrim;
inputSampleR -= (bezEQ[bez_LMCR][0]+(bezEQ[bez_LMDR][0]*(1.0-X)*(1.0-X)))*0.5;
inputSampleR -= ((bezEQ[bez_LMCR][0]*2.0*(1.0-X)*X)+(bezEQ[bez_LMBR][0]*X*X))*0.5;
inputSampleR /= bassisTrim;
}
if (Sderez < 1.0) {
pointCycle += Sderez;
if (pointCycle > 0.9999999) {
pointAL = pointBL;
pointBL = inputSampleL;
pointAR = pointBR;
pointBR = inputSampleR;
pointCycle = 0.0;
}
double X = pointCycle*Strim;
if (Sderez > 0.0) {
inputSampleL = pointAL+((pointBL-pointAL)*X);
inputSampleL /= Strim;
inputSampleR = pointAR+((pointBR-pointAR)*X);
inputSampleR /= Strim;
} else {
inputSampleL = 0.0;
inputSampleR = 0.0;
}
}
if (brightDerez < 1.0) {
bezEQ[bez_HMcycle][1] += brightDerez;
bezEQ[bez_HMAL][1] += (inputSampleL * brightDerez);
bezEQ[bez_HMAR][1] += (inputSampleR * brightDerez);
if (bezEQ[bez_HMcycle][1] > brightTrim) {
bezEQ[bez_HMDL][1] = bezEQ[bez_HMCL][1]; bezEQ[bez_HMCL][1] = bezEQ[bez_HMBL][1];
bezEQ[bez_HMBL][1] = bezEQ[bez_HMAL][1]*(0.5-(brightDerez*0.082));
bezEQ[bez_HMAL][1] = 0.0;
bezEQ[bez_HMDR][1] = bezEQ[bez_HMCR][1]; bezEQ[bez_HMCR][1] = bezEQ[bez_HMBR][1];
bezEQ[bez_HMBR][1] = bezEQ[bez_HMAR][1]*(0.5-(brightDerez*0.082));
bezEQ[bez_HMAR][1] = 0.0; bezEQ[bez_HMcycle][1] = 0.0;
}
double X = bezEQ[bez_HMcycle][1];
inputSampleL = bezEQ[bez_HMCL][1]+(bezEQ[bez_HMDL][1]*(1.0-X)*(1.0-X));
inputSampleL += (bezEQ[bez_HMCL][1]*2.0*(1.0-X)*X)+(bezEQ[bez_HMBL][1]*X*X);
inputSampleL /= brightTrim;
inputSampleR = bezEQ[bez_HMCR][1]+(bezEQ[bez_HMDR][1]*(1.0-X)*(1.0-X));
inputSampleR += (bezEQ[bez_HMCR][1]*2.0*(1.0-X)*X)+(bezEQ[bez_HMBR][1]*X*X);
inputSampleR /= brightTrim;
}
if (bassisDerez > 0.0) {
bezEQ[bez_LMcycle][1] += bassisDerez;
bezEQ[bez_LMAL][1] += (inputSampleL * bassisDerez);
bezEQ[bez_LMAR][1] += (inputSampleR * bassisDerez);
if (bezEQ[bez_LMcycle][1] > bassisTrim) {
bezEQ[bez_LMDL][1] = bezEQ[bez_LMCL][1]; bezEQ[bez_LMCL][1] = bezEQ[bez_LMBL][1];
bezEQ[bez_LMBL][1] = bezEQ[bez_LMAL][1]*(0.5-(bassisDerez*0.082));
bezEQ[bez_LMAL][1] = 0.0;
bezEQ[bez_LMDR][1] = bezEQ[bez_LMCR][1]; bezEQ[bez_LMCR][1] = bezEQ[bez_LMBR][1];
bezEQ[bez_LMBR][1] = bezEQ[bez_LMAR][1]*(0.5-(bassisDerez*0.082));
bezEQ[bez_LMAR][1] = 0.0; bezEQ[bez_LMcycle][1] = 0.0;
}
double X = bezEQ[bez_LMcycle][1];
inputSampleL -= (bezEQ[bez_LMCL][1]+(bezEQ[bez_LMDL][1]*(1.0-X)*(1.0-X)))*0.5;
inputSampleL -= ((bezEQ[bez_LMCL][1]*2.0*(1.0-X)*X)+(bezEQ[bez_LMBL][1]*X*X))*0.5;
inputSampleL /= bassisTrim;
inputSampleR -= (bezEQ[bez_LMCR][1]+(bezEQ[bez_LMDR][1]*(1.0-X)*(1.0-X)))*0.5;
inputSampleR -= ((bezEQ[bez_LMCR][1]*2.0*(1.0-X)*X)+(bezEQ[bez_LMBR][1]*X*X))*0.5;
inputSampleR /= bassisTrim;
}
if (output < 1.0) {
inputSampleL *= output;
inputSampleR *= output;
}
//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)) * 3.553e-44l * pow(2,expon+62));
//frexp((double)inputSampleR, &expon);
fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
if (fpdL-fpdR < 1073741824 || fpdR-fpdL < 1073741824) {
fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;}
//inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 3.553e-44l * pow(2,expon+62));
//end 64 bit stereo floating point dither
*out1 = inputSampleL;
*out2 = inputSampleR;
in1++;
in2++;
out1++;
out2++;
}
}
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