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airwindows/plugins/MacSignedVST/StoneFireComp/source/StoneFireCompProc.cpp
Christopher Johnson 96820d2240 CrunchCoat
2024-05-25 21:04:00 -04:00

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/* ========================================
* StoneFireComp - StoneFireComp.h
* Copyright (c) airwindows, Airwindows uses the MIT license
* ======================================== */
#ifndef __StoneFireComp_H
#include "StoneFireComp.h"
#endif
void StoneFireComp::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 compFThresh = pow(A,4);
double compFAttack = 1.0/(((pow(B,3)*5000.0)+500.0)*overallscale);
double compFRelease = 1.0/(((pow(C,5)*50000.0)+500.0)*overallscale);
double fireGain = D*2.0; fireGain = pow(fireGain,3);
double firePad = fireGain; if (firePad > 1.0) firePad = 1.0;
double compSThresh = pow(E,4);
double compSAttack = 1.0/(((pow(F,3)*5000.0)+500.0)*overallscale);
double compSRelease = 1.0/(((pow(G,5)*50000.0)+500.0)*overallscale);
double stoneGain = H*2.0; stoneGain = pow(stoneGain,3);
double stonePad = stoneGain; if (stonePad > 1.0) stonePad = 1.0;
double kalman = 1.0-(pow(I,2)/overallscale);
//crossover frequency between mid/bass
double compRatio = 1.0-pow(1.0-J,2);
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;
//begin KalmanL
double fireL = inputSampleL;
double temp = inputSampleL = inputSampleL*(1.0-kalman)*0.777;
inputSampleL *= (1.0-kalman);
//set up gain levels to control the beast
kal[prevSlewL3] += kal[prevSampL3] - kal[prevSampL2]; kal[prevSlewL3] *= 0.5;
kal[prevSlewL2] += kal[prevSampL2] - kal[prevSampL1]; kal[prevSlewL2] *= 0.5;
kal[prevSlewL1] += kal[prevSampL1] - inputSampleL; kal[prevSlewL1] *= 0.5;
//make slews from each set of samples used
kal[accSlewL2] += kal[prevSlewL3] - kal[prevSlewL2]; kal[accSlewL2] *= 0.5;
kal[accSlewL1] += kal[prevSlewL2] - kal[prevSlewL1]; kal[accSlewL1] *= 0.5;
//differences between slews: rate of change of rate of change
kal[accSlewL3] += (kal[accSlewL2] - kal[accSlewL1]); kal[accSlewL3] *= 0.5;
//entering the abyss, what even is this
kal[kalOutL] += kal[prevSampL1] + kal[prevSlewL2] + kal[accSlewL3]; kal[kalOutL] *= 0.5;
//resynthesizing predicted result (all iir smoothed)
kal[kalGainL] += fabs(temp-kal[kalOutL])*kalman*8.0; kal[kalGainL] *= 0.5;
//madness takes its toll. Kalman Gain: how much dry to retain
if (kal[kalGainL] > kalman*0.5) kal[kalGainL] = kalman*0.5;
//attempts to avoid explosions
kal[kalOutL] += (temp*(1.0-(0.68+(kalman*0.157))));
//this is for tuning a really complete cancellation up around Nyquist
kal[prevSampL3] = kal[prevSampL2]; kal[prevSampL2] = kal[prevSampL1];
kal[prevSampL1] = (kal[kalGainL] * kal[kalOutL]) + ((1.0-kal[kalGainL])*temp);
//feed the chain of previous samples
if (kal[prevSampL1] > 1.0) kal[prevSampL1] = 1.0; if (kal[prevSampL1] < -1.0) kal[prevSampL1] = -1.0;
double stoneL = kal[kalOutL]*0.777;
fireL -= stoneL;
//end KalmanL
//begin KalmanR
double fireR = inputSampleR;
temp = inputSampleR = inputSampleR*(1.0-kalman)*0.777;
inputSampleR *= (1.0-kalman);
//set up gain levels to control the beast
kal[prevSlewR3] += kal[prevSampR3] - kal[prevSampR2]; kal[prevSlewR3] *= 0.5;
kal[prevSlewR2] += kal[prevSampR2] - kal[prevSampR1]; kal[prevSlewR2] *= 0.5;
kal[prevSlewR1] += kal[prevSampR1] - inputSampleR; kal[prevSlewR1] *= 0.5;
//make slews from each set of samples used
kal[accSlewR2] += kal[prevSlewR3] - kal[prevSlewR2]; kal[accSlewR2] *= 0.5;
kal[accSlewR1] += kal[prevSlewR2] - kal[prevSlewR1]; kal[accSlewR1] *= 0.5;
//differences between slews: rate of change of rate of change
kal[accSlewR3] += (kal[accSlewR2] - kal[accSlewR1]); kal[accSlewR3] *= 0.5;
//entering the abyss, what even is this
kal[kalOutR] += kal[prevSampR1] + kal[prevSlewR2] + kal[accSlewR3]; kal[kalOutR] *= 0.5;
//resynthesizing predicted result (all iir smoothed)
kal[kalGainR] += fabs(temp-kal[kalOutR])*kalman*8.0; kal[kalGainR] *= 0.5;
//madness takes its toll. Kalman Gain: how much dry to retain
if (kal[kalGainR] > kalman*0.5) kal[kalGainR] = kalman*0.5;
//attempts to avoid explosions
kal[kalOutR] += (temp*(1.0-(0.68+(kalman*0.157))));
//this is for tuning a really complete cancellation up around Nyquist
kal[prevSampR3] = kal[prevSampR2]; kal[prevSampR2] = kal[prevSampR1];
kal[prevSampR1] = (kal[kalGainR] * kal[kalOutR]) + ((1.0-kal[kalGainR])*temp);
//feed the chain of previous samples
if (kal[prevSampR1] > 1.0) kal[prevSampR1] = 1.0; if (kal[prevSampR1] < -1.0) kal[prevSampR1] = -1.0;
double stoneR = kal[kalOutR]*0.777;
fireR -= stoneR;
//end KalmanR
//fire dynamics
if (fabs(fireL) > compFThresh) { //compression L
fireCompL -= (fireCompL * compFAttack);
fireCompL += ((compFThresh / fabs(fireL))*compFAttack);
} else fireCompL = (fireCompL*(1.0-compFRelease))+compFRelease;
if (fabs(fireR) > compFThresh) { //compression R
fireCompR -= (fireCompR * compFAttack);
fireCompR += ((compFThresh / fabs(fireR))*compFAttack);
} else fireCompR = (fireCompR*(1.0-compFRelease))+compFRelease;
if (fireCompL > fireCompR) fireCompL -= (fireCompL * compFAttack);
if (fireCompR > fireCompL) fireCompR -= (fireCompR * compFAttack);
fireCompL = fmax(fmin(fireCompL,1.0),0.0);
fireCompR = fmax(fmin(fireCompR,1.0),0.0);
fireL *= (((1.0-compRatio)*firePad)+(fireCompL*compRatio*fireGain));
fireR *= (((1.0-compRatio)*firePad)+(fireCompR*compRatio*fireGain));
//stone dynamics
if (fabs(stoneL) > compSThresh) { //compression L
stoneCompL -= (stoneCompL * compSAttack);
stoneCompL += ((compSThresh / fabs(stoneL))*compSAttack);
} else stoneCompL = (stoneCompL*(1.0-compSRelease))+compSRelease;
if (fabs(stoneR) > compSThresh) { //compression R
stoneCompR -= (stoneCompR * compSAttack);
stoneCompR += ((compSThresh / fabs(stoneR))*compSAttack);
} else stoneCompR = (stoneCompR*(1.0-compSRelease))+compSRelease;
if (stoneCompL > stoneCompR) stoneCompL -= (stoneCompL * compSAttack);
if (stoneCompR > stoneCompL) stoneCompR -= (stoneCompR * compSAttack);
stoneCompL = fmax(fmin(stoneCompL,1.0),0.0);
stoneCompR = fmax(fmin(stoneCompR,1.0),0.0);
stoneL *= (((1.0-compRatio)*stonePad)+(stoneCompL*compRatio*stoneGain));
stoneR *= (((1.0-compRatio)*stonePad)+(stoneCompR*compRatio*stoneGain));
inputSampleL = stoneL+fireL;
inputSampleR = stoneR+fireR;
//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 StoneFireComp::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 compFThresh = pow(A,4);
double compFAttack = 1.0/(((pow(B,3)*5000.0)+500.0)*overallscale);
double compFRelease = 1.0/(((pow(C,5)*50000.0)+500.0)*overallscale);
double fireGain = D*2.0; fireGain = pow(fireGain,3);
double firePad = fireGain; if (firePad > 1.0) firePad = 1.0;
double compSThresh = pow(E,4);
double compSAttack = 1.0/(((pow(F,3)*5000.0)+500.0)*overallscale);
double compSRelease = 1.0/(((pow(G,5)*50000.0)+500.0)*overallscale);
double stoneGain = H*2.0; stoneGain = pow(stoneGain,3);
double stonePad = stoneGain; if (stonePad > 1.0) stonePad = 1.0;
double kalman = 1.0-(pow(I,2)/overallscale);
//crossover frequency between mid/bass
double compRatio = 1.0-pow(1.0-J,2);
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;
//begin KalmanL
double fireL = inputSampleL;
double temp = inputSampleL = inputSampleL*(1.0-kalman)*0.777;
inputSampleL *= (1.0-kalman);
//set up gain levels to control the beast
kal[prevSlewL3] += kal[prevSampL3] - kal[prevSampL2]; kal[prevSlewL3] *= 0.5;
kal[prevSlewL2] += kal[prevSampL2] - kal[prevSampL1]; kal[prevSlewL2] *= 0.5;
kal[prevSlewL1] += kal[prevSampL1] - inputSampleL; kal[prevSlewL1] *= 0.5;
//make slews from each set of samples used
kal[accSlewL2] += kal[prevSlewL3] - kal[prevSlewL2]; kal[accSlewL2] *= 0.5;
kal[accSlewL1] += kal[prevSlewL2] - kal[prevSlewL1]; kal[accSlewL1] *= 0.5;
//differences between slews: rate of change of rate of change
kal[accSlewL3] += (kal[accSlewL2] - kal[accSlewL1]); kal[accSlewL3] *= 0.5;
//entering the abyss, what even is this
kal[kalOutL] += kal[prevSampL1] + kal[prevSlewL2] + kal[accSlewL3]; kal[kalOutL] *= 0.5;
//resynthesizing predicted result (all iir smoothed)
kal[kalGainL] += fabs(temp-kal[kalOutL])*kalman*8.0; kal[kalGainL] *= 0.5;
//madness takes its toll. Kalman Gain: how much dry to retain
if (kal[kalGainL] > kalman*0.5) kal[kalGainL] = kalman*0.5;
//attempts to avoid explosions
kal[kalOutL] += (temp*(1.0-(0.68+(kalman*0.157))));
//this is for tuning a really complete cancellation up around Nyquist
kal[prevSampL3] = kal[prevSampL2]; kal[prevSampL2] = kal[prevSampL1];
kal[prevSampL1] = (kal[kalGainL] * kal[kalOutL]) + ((1.0-kal[kalGainL])*temp);
//feed the chain of previous samples
if (kal[prevSampL1] > 1.0) kal[prevSampL1] = 1.0; if (kal[prevSampL1] < -1.0) kal[prevSampL1] = -1.0;
double stoneL = kal[kalOutL]*0.777;
fireL -= stoneL;
//end KalmanL
//begin KalmanR
double fireR = inputSampleR;
temp = inputSampleR = inputSampleR*(1.0-kalman)*0.777;
inputSampleR *= (1.0-kalman);
//set up gain levels to control the beast
kal[prevSlewR3] += kal[prevSampR3] - kal[prevSampR2]; kal[prevSlewR3] *= 0.5;
kal[prevSlewR2] += kal[prevSampR2] - kal[prevSampR1]; kal[prevSlewR2] *= 0.5;
kal[prevSlewR1] += kal[prevSampR1] - inputSampleR; kal[prevSlewR1] *= 0.5;
//make slews from each set of samples used
kal[accSlewR2] += kal[prevSlewR3] - kal[prevSlewR2]; kal[accSlewR2] *= 0.5;
kal[accSlewR1] += kal[prevSlewR2] - kal[prevSlewR1]; kal[accSlewR1] *= 0.5;
//differences between slews: rate of change of rate of change
kal[accSlewR3] += (kal[accSlewR2] - kal[accSlewR1]); kal[accSlewR3] *= 0.5;
//entering the abyss, what even is this
kal[kalOutR] += kal[prevSampR1] + kal[prevSlewR2] + kal[accSlewR3]; kal[kalOutR] *= 0.5;
//resynthesizing predicted result (all iir smoothed)
kal[kalGainR] += fabs(temp-kal[kalOutR])*kalman*8.0; kal[kalGainR] *= 0.5;
//madness takes its toll. Kalman Gain: how much dry to retain
if (kal[kalGainR] > kalman*0.5) kal[kalGainR] = kalman*0.5;
//attempts to avoid explosions
kal[kalOutR] += (temp*(1.0-(0.68+(kalman*0.157))));
//this is for tuning a really complete cancellation up around Nyquist
kal[prevSampR3] = kal[prevSampR2]; kal[prevSampR2] = kal[prevSampR1];
kal[prevSampR1] = (kal[kalGainR] * kal[kalOutR]) + ((1.0-kal[kalGainR])*temp);
//feed the chain of previous samples
if (kal[prevSampR1] > 1.0) kal[prevSampR1] = 1.0; if (kal[prevSampR1] < -1.0) kal[prevSampR1] = -1.0;
double stoneR = kal[kalOutR]*0.777;
fireR -= stoneR;
//end KalmanR
//fire dynamics
if (fabs(fireL) > compFThresh) { //compression L
fireCompL -= (fireCompL * compFAttack);
fireCompL += ((compFThresh / fabs(fireL))*compFAttack);
} else fireCompL = (fireCompL*(1.0-compFRelease))+compFRelease;
if (fabs(fireR) > compFThresh) { //compression R
fireCompR -= (fireCompR * compFAttack);
fireCompR += ((compFThresh / fabs(fireR))*compFAttack);
} else fireCompR = (fireCompR*(1.0-compFRelease))+compFRelease;
if (fireCompL > fireCompR) fireCompL -= (fireCompL * compFAttack);
if (fireCompR > fireCompL) fireCompR -= (fireCompR * compFAttack);
fireCompL = fmax(fmin(fireCompL,1.0),0.0);
fireCompR = fmax(fmin(fireCompR,1.0),0.0);
fireL *= (((1.0-compRatio)*firePad)+(fireCompL*compRatio*fireGain));
fireR *= (((1.0-compRatio)*firePad)+(fireCompR*compRatio*fireGain));
//stone dynamics
if (fabs(stoneL) > compSThresh) { //compression L
stoneCompL -= (stoneCompL * compSAttack);
stoneCompL += ((compSThresh / fabs(stoneL))*compSAttack);
} else stoneCompL = (stoneCompL*(1.0-compSRelease))+compSRelease;
if (fabs(stoneR) > compSThresh) { //compression R
stoneCompR -= (stoneCompR * compSAttack);
stoneCompR += ((compSThresh / fabs(stoneR))*compSAttack);
} else stoneCompR = (stoneCompR*(1.0-compSRelease))+compSRelease;
if (stoneCompL > stoneCompR) stoneCompL -= (stoneCompL * compSAttack);
if (stoneCompR > stoneCompL) stoneCompR -= (stoneCompR * compSAttack);
stoneCompL = fmax(fmin(stoneCompL,1.0),0.0);
stoneCompR = fmax(fmin(stoneCompR,1.0),0.0);
stoneL *= (((1.0-compRatio)*stonePad)+(stoneCompL*compRatio*stoneGain));
stoneR *= (((1.0-compRatio)*stonePad)+(stoneCompR*compRatio*stoneGain));
inputSampleL = stoneL+fireL;
inputSampleR = stoneR+fireR;
//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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