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airwindows/plugins/WinVST/BassKit/BassKitProc.cpp
Christopher Johnson f06250c082 Clarifying Licensing in boilerplate code generation
2022-11-21 09:20:21 -05:00

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/* ========================================
* BassKit - BassKit.h
* Copyright (c) 2016 airwindows, Airwindows uses the MIT license
* ======================================== */
#ifndef __BassKit_H
#include "BassKit.h"
#endif
void BassKit::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 ataLowpass;
double randy;
double invrandy;
double HeadBump = 0.0;
double BassGain = A * 0.1;
double HeadBumpFreq = ((B*0.1)+0.02)/overallscale;
double iirAmount = HeadBumpFreq/44.1;
double BassOutGain = ((C*2.0)-1.0)*fabs(((C*2.0)-1.0));
double SubBump = 0.0;
double SubOutGain = ((D*2.0)-1.0)*fabs(((D*2.0)-1.0))*4.0;
double clamp = 0.0;
double fuzz = 0.111;
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;
ataLowpass = (inputSampleL + inputSampleR) / 2.0;
iirDriveSampleA = (iirDriveSampleA * (1.0 - HeadBumpFreq)) + (ataLowpass * HeadBumpFreq); ataLowpass = iirDriveSampleA;
iirDriveSampleB = (iirDriveSampleB * (1.0 - HeadBumpFreq)) + (ataLowpass * HeadBumpFreq); ataLowpass = iirDriveSampleB;
oscGate += fabs(ataLowpass * 10.0);
oscGate -= 0.001;
if (oscGate > 1.0) oscGate = 1.0;
if (oscGate < 0) oscGate = 0;
//got a value that only goes down low when there's silence or near silence on input
clamp = 1.0-oscGate;
clamp *= 0.00001;
//set up the thing to choke off oscillations- belt and suspenders affair
if (ataLowpass > 0)
{if (WasNegative){SubOctave = !SubOctave;} WasNegative = false;}
else {WasNegative = true;}
//set up polarities for sub-bass version
randy = (double(fpdL)/UINT32_MAX)*fuzz; //0 to 1 the noise, may not be needed
invrandy = (1.0-randy);
randy /= 2.0;
//set up the noise
iirSampleA = (iirSampleA * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleA;
iirSampleB = (iirSampleB * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleB;
iirSampleC = (iirSampleC * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleC;
iirSampleD = (iirSampleD * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleD;
iirSampleE = (iirSampleE * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleE;
iirSampleF = (iirSampleF * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleF;
iirSampleG = (iirSampleG * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleG;
iirSampleH = (iirSampleH * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleH;
iirSampleI = (iirSampleI * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleI;
iirSampleJ = (iirSampleJ * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleJ;
iirSampleK = (iirSampleK * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleK;
iirSampleL = (iirSampleL * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleL;
iirSampleM = (iirSampleM * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleM;
iirSampleN = (iirSampleN * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleN;
iirSampleO = (iirSampleO * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleO;
iirSampleP = (iirSampleP * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleP;
iirSampleQ = (iirSampleQ * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleQ;
iirSampleR = (iirSampleR * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleR;
iirSampleS = (iirSampleS * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleS;
iirSampleT = (iirSampleT * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleT;
iirSampleU = (iirSampleU * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleU;
iirSampleV = (iirSampleV * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleV;
switch (bflip)
{
case 1:
iirHeadBumpA += (ataLowpass * BassGain);
iirHeadBumpA -= (iirHeadBumpA * iirHeadBumpA * iirHeadBumpA * HeadBumpFreq);
iirHeadBumpA = (invrandy * iirHeadBumpA) + (randy * iirHeadBumpB) + (randy * iirHeadBumpC);
if (iirHeadBumpA > 0) iirHeadBumpA -= clamp;
if (iirHeadBumpA < 0) iirHeadBumpA += clamp;
HeadBump = iirHeadBumpA;
break;
case 2:
iirHeadBumpB += (ataLowpass * BassGain);
iirHeadBumpB -= (iirHeadBumpB * iirHeadBumpB * iirHeadBumpB * HeadBumpFreq);
iirHeadBumpB = (randy * iirHeadBumpA) + (invrandy * iirHeadBumpB) + (randy * iirHeadBumpC);
if (iirHeadBumpB > 0) iirHeadBumpB -= clamp;
if (iirHeadBumpB < 0) iirHeadBumpB += clamp;
HeadBump = iirHeadBumpB;
break;
case 3:
iirHeadBumpC += (ataLowpass * BassGain);
iirHeadBumpC -= (iirHeadBumpC * iirHeadBumpC * iirHeadBumpC * HeadBumpFreq);
iirHeadBumpC = (randy * iirHeadBumpA) + (randy * iirHeadBumpB) + (invrandy * iirHeadBumpC);
if (iirHeadBumpC > 0) iirHeadBumpC -= clamp;
if (iirHeadBumpC < 0) iirHeadBumpC += clamp;
HeadBump = iirHeadBumpC;
break;
}
iirSampleW = (iirSampleW * (1.0 - iirAmount)) + (HeadBump * iirAmount); HeadBump -= iirSampleW;
iirSampleX = (iirSampleX * (1.0 - iirAmount)) + (HeadBump * iirAmount); HeadBump -= iirSampleX;
SubBump = HeadBump;
iirSampleY = (iirSampleY * (1.0 - iirAmount)) + (SubBump * iirAmount); SubBump -= iirSampleY;
iirDriveSampleC = (iirDriveSampleC * (1.0 - HeadBumpFreq)) + (SubBump * HeadBumpFreq); SubBump = iirDriveSampleC;
iirDriveSampleD = (iirDriveSampleD * (1.0 - HeadBumpFreq)) + (SubBump * HeadBumpFreq); SubBump = iirDriveSampleD;
SubBump = fabs(SubBump);
if (SubOctave == false) {SubBump = -SubBump;}
switch (bflip)
{
case 1:
iirSubBumpA += SubBump;// * BassGain);
iirSubBumpA -= (iirSubBumpA * iirSubBumpA * iirSubBumpA * HeadBumpFreq);
iirSubBumpA = (invrandy * iirSubBumpA) + (randy * iirSubBumpB) + (randy * iirSubBumpC);
if (iirSubBumpA > 0) iirSubBumpA -= clamp;
if (iirSubBumpA < 0) iirSubBumpA += clamp;
SubBump = iirSubBumpA;
break;
case 2:
iirSubBumpB += SubBump;// * BassGain);
iirSubBumpB -= (iirSubBumpB * iirSubBumpB * iirSubBumpB * HeadBumpFreq);
iirSubBumpB = (randy * iirSubBumpA) + (invrandy * iirSubBumpB) + (randy * iirSubBumpC);
if (iirSubBumpB > 0) iirSubBumpB -= clamp;
if (iirSubBumpB < 0) iirSubBumpB += clamp;
SubBump = iirSubBumpB;
break;
case 3:
iirSubBumpC += SubBump;// * BassGain);
iirSubBumpC -= (iirSubBumpC * iirSubBumpC * iirSubBumpC * HeadBumpFreq);
iirSubBumpC = (randy * iirSubBumpA) + (randy * iirSubBumpB) + (invrandy * iirSubBumpC);
if (iirSubBumpC > 0) iirSubBumpC -= clamp;
if (iirSubBumpC < 0) iirSubBumpC += clamp;
SubBump = iirSubBumpC;
break;
}
iirSampleZ = (iirSampleZ * (1.0 - HeadBumpFreq)) + (SubBump * HeadBumpFreq); SubBump = iirSampleZ;
iirDriveSampleE = (iirDriveSampleE * (1.0 - iirAmount)) + (SubBump * iirAmount); SubBump = iirDriveSampleE;
iirDriveSampleF = (iirDriveSampleF * (1.0 - iirAmount)) + (SubBump * iirAmount); SubBump = iirDriveSampleF;
inputSampleL += (HeadBump * BassOutGain);
inputSampleL += (SubBump * SubOutGain);
inputSampleR += (HeadBump * BassOutGain);
inputSampleR += (SubBump * SubOutGain);
flip = !flip;
bflip++;
if (bflip < 1 || bflip > 3) bflip = 1;
//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 BassKit::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 ataLowpass;
double randy;
double invrandy;
double HeadBump = 0.0;
double BassGain = A * 0.1;
double HeadBumpFreq = ((B*0.1)+0.02)/overallscale;
double iirAmount = HeadBumpFreq/44.1;
double BassOutGain = ((C*2.0)-1.0)*fabs(((C*2.0)-1.0));
double SubBump = 0.0;
double SubOutGain = ((D*2.0)-1.0)*fabs(((D*2.0)-1.0))*4.0;
double clamp = 0.0;
double fuzz = 0.111;
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;
ataLowpass = (inputSampleL + inputSampleR) / 2.0;
iirDriveSampleA = (iirDriveSampleA * (1.0 - HeadBumpFreq)) + (ataLowpass * HeadBumpFreq); ataLowpass = iirDriveSampleA;
iirDriveSampleB = (iirDriveSampleB * (1.0 - HeadBumpFreq)) + (ataLowpass * HeadBumpFreq); ataLowpass = iirDriveSampleB;
oscGate += fabs(ataLowpass * 10.0);
oscGate -= 0.001;
if (oscGate > 1.0) oscGate = 1.0;
if (oscGate < 0) oscGate = 0;
//got a value that only goes down low when there's silence or near silence on input
clamp = 1.0-oscGate;
clamp *= 0.00001;
//set up the thing to choke off oscillations- belt and suspenders affair
if (ataLowpass > 0)
{if (WasNegative){SubOctave = !SubOctave;} WasNegative = false;}
else {WasNegative = true;}
//set up polarities for sub-bass version
randy = (double(fpdL)/UINT32_MAX)*fuzz; //0 to 1 the noise, may not be needed
invrandy = (1.0-randy);
randy /= 2.0;
//set up the noise
iirSampleA = (iirSampleA * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleA;
iirSampleB = (iirSampleB * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleB;
iirSampleC = (iirSampleC * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleC;
iirSampleD = (iirSampleD * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleD;
iirSampleE = (iirSampleE * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleE;
iirSampleF = (iirSampleF * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleF;
iirSampleG = (iirSampleG * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleG;
iirSampleH = (iirSampleH * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleH;
iirSampleI = (iirSampleI * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleI;
iirSampleJ = (iirSampleJ * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleJ;
iirSampleK = (iirSampleK * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleK;
iirSampleL = (iirSampleL * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleL;
iirSampleM = (iirSampleM * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleM;
iirSampleN = (iirSampleN * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleN;
iirSampleO = (iirSampleO * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleO;
iirSampleP = (iirSampleP * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleP;
iirSampleQ = (iirSampleQ * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleQ;
iirSampleR = (iirSampleR * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleR;
iirSampleS = (iirSampleS * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleS;
iirSampleT = (iirSampleT * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleT;
iirSampleU = (iirSampleU * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleU;
iirSampleV = (iirSampleV * (1.0 - iirAmount)) + (ataLowpass * iirAmount); ataLowpass -= iirSampleV;
switch (bflip)
{
case 1:
iirHeadBumpA += (ataLowpass * BassGain);
iirHeadBumpA -= (iirHeadBumpA * iirHeadBumpA * iirHeadBumpA * HeadBumpFreq);
iirHeadBumpA = (invrandy * iirHeadBumpA) + (randy * iirHeadBumpB) + (randy * iirHeadBumpC);
if (iirHeadBumpA > 0) iirHeadBumpA -= clamp;
if (iirHeadBumpA < 0) iirHeadBumpA += clamp;
HeadBump = iirHeadBumpA;
break;
case 2:
iirHeadBumpB += (ataLowpass * BassGain);
iirHeadBumpB -= (iirHeadBumpB * iirHeadBumpB * iirHeadBumpB * HeadBumpFreq);
iirHeadBumpB = (randy * iirHeadBumpA) + (invrandy * iirHeadBumpB) + (randy * iirHeadBumpC);
if (iirHeadBumpB > 0) iirHeadBumpB -= clamp;
if (iirHeadBumpB < 0) iirHeadBumpB += clamp;
HeadBump = iirHeadBumpB;
break;
case 3:
iirHeadBumpC += (ataLowpass * BassGain);
iirHeadBumpC -= (iirHeadBumpC * iirHeadBumpC * iirHeadBumpC * HeadBumpFreq);
iirHeadBumpC = (randy * iirHeadBumpA) + (randy * iirHeadBumpB) + (invrandy * iirHeadBumpC);
if (iirHeadBumpC > 0) iirHeadBumpC -= clamp;
if (iirHeadBumpC < 0) iirHeadBumpC += clamp;
HeadBump = iirHeadBumpC;
break;
}
iirSampleW = (iirSampleW * (1.0 - iirAmount)) + (HeadBump * iirAmount); HeadBump -= iirSampleW;
iirSampleX = (iirSampleX * (1.0 - iirAmount)) + (HeadBump * iirAmount); HeadBump -= iirSampleX;
SubBump = HeadBump;
iirSampleY = (iirSampleY * (1.0 - iirAmount)) + (SubBump * iirAmount); SubBump -= iirSampleY;
iirDriveSampleC = (iirDriveSampleC * (1.0 - HeadBumpFreq)) + (SubBump * HeadBumpFreq); SubBump = iirDriveSampleC;
iirDriveSampleD = (iirDriveSampleD * (1.0 - HeadBumpFreq)) + (SubBump * HeadBumpFreq); SubBump = iirDriveSampleD;
SubBump = fabs(SubBump);
if (SubOctave == false) {SubBump = -SubBump;}
switch (bflip)
{
case 1:
iirSubBumpA += SubBump;// * BassGain);
iirSubBumpA -= (iirSubBumpA * iirSubBumpA * iirSubBumpA * HeadBumpFreq);
iirSubBumpA = (invrandy * iirSubBumpA) + (randy * iirSubBumpB) + (randy * iirSubBumpC);
if (iirSubBumpA > 0) iirSubBumpA -= clamp;
if (iirSubBumpA < 0) iirSubBumpA += clamp;
SubBump = iirSubBumpA;
break;
case 2:
iirSubBumpB += SubBump;// * BassGain);
iirSubBumpB -= (iirSubBumpB * iirSubBumpB * iirSubBumpB * HeadBumpFreq);
iirSubBumpB = (randy * iirSubBumpA) + (invrandy * iirSubBumpB) + (randy * iirSubBumpC);
if (iirSubBumpB > 0) iirSubBumpB -= clamp;
if (iirSubBumpB < 0) iirSubBumpB += clamp;
SubBump = iirSubBumpB;
break;
case 3:
iirSubBumpC += SubBump;// * BassGain);
iirSubBumpC -= (iirSubBumpC * iirSubBumpC * iirSubBumpC * HeadBumpFreq);
iirSubBumpC = (randy * iirSubBumpA) + (randy * iirSubBumpB) + (invrandy * iirSubBumpC);
if (iirSubBumpC > 0) iirSubBumpC -= clamp;
if (iirSubBumpC < 0) iirSubBumpC += clamp;
SubBump = iirSubBumpC;
break;
}
iirSampleZ = (iirSampleZ * (1.0 - HeadBumpFreq)) + (SubBump * HeadBumpFreq); SubBump = iirSampleZ;
iirDriveSampleE = (iirDriveSampleE * (1.0 - iirAmount)) + (SubBump * iirAmount); SubBump = iirDriveSampleE;
iirDriveSampleF = (iirDriveSampleF * (1.0 - iirAmount)) + (SubBump * iirAmount); SubBump = iirDriveSampleF;
inputSampleL += (HeadBump * BassOutGain);
inputSampleL += (SubBump * SubOutGain);
inputSampleR += (HeadBump * BassOutGain);
inputSampleR += (SubBump * SubOutGain);
flip = !flip;
bflip++;
if (bflip < 1 || bflip > 3) bflip = 1;
//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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