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/* ========================================
* TapeDelay - TapeDelay.h
* Copyright (c) 2016 airwindows, All rights reserved
* ======================================== */
#ifndef __TapeDelay_H
#include "TapeDelay.h"
#endif
void TapeDelay::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames)
{
float* in1 = inputs[0];
float* in2 = inputs[1];
float* out1 = outputs[0];
float* out2 = outputs[1];
double dry = pow(A,2);
double wet = pow(B,2);
int targetdelay = (int)(44000*C);
double feedback = (D*1.3);
double leanfat = ((E*2.0)-1.0);
double fatwet = fabs(leanfat);
int fatness = (int)floor((F*29.0)+3.0);
int count;
double storedelayL;
double storedelayR;
double sumL = 0.0;
double sumR = 0.0;
double floattotalL = 0.0;
double floattotalR = 0.0;
int sumtotalL = 0;
int sumtotalR = 0;
while (--sampleFrames >= 0)
{
long double inputSampleL = *in1;
long double inputSampleR = *in2;
static int noisesourceL = 0;
static int noisesourceR = 850010;
int residue;
double applyresidue;
noisesourceL = noisesourceL % 1700021; noisesourceL++;
residue = noisesourceL * noisesourceL;
residue = residue % 170003; residue *= residue;
residue = residue % 17011; residue *= residue;
residue = residue % 1709; residue *= residue;
residue = residue % 173; residue *= residue;
residue = residue % 17;
applyresidue = residue;
applyresidue *= 0.00000001;
applyresidue *= 0.00000001;
inputSampleL += applyresidue;
if (inputSampleL<1.2e-38 && -inputSampleL<1.2e-38) {
inputSampleL -= applyresidue;
}
noisesourceR = noisesourceR % 1700021; noisesourceR++;
residue = noisesourceR * noisesourceR;
residue = residue % 170003; residue *= residue;
residue = residue % 17011; residue *= residue;
residue = residue % 1709; residue *= residue;
residue = residue % 173; residue *= residue;
residue = residue % 17;
applyresidue = residue;
applyresidue *= 0.00000001;
applyresidue *= 0.00000001;
inputSampleR += applyresidue;
if (inputSampleR<1.2e-38 && -inputSampleR<1.2e-38) {
inputSampleR -= applyresidue;
}
//for live air, we always apply the dither noise. Then, if our result is
//effectively digital black, we'll subtract it again. We want a 'air' hiss
if (gcount < 0 || gcount > 128) {gcount = 128;}
count = gcount;
if (delay < 0 || delay > maxdelay) {delay = maxdelay;}
sumL = inputSampleL + (dL[delay]*feedback);
sumR = inputSampleR + (dR[delay]*feedback);
pL[count+128] = pL[count] = sumtotalL = (int)(sumL*8388608.0);
pR[count+128] = pR[count] = sumtotalR = (int)(sumR*8388608.0);
switch (fatness)
{
case 32: sumtotalL += pL[count+127]; sumtotalR += pR[count+127]; //note NO break statement.
case 31: sumtotalL += pL[count+113]; sumtotalR += pR[count+113]; //This jumps to the relevant tap
case 30: sumtotalL += pL[count+109]; sumtotalR += pR[count+109]; //and then includes all smaller taps.
case 29: sumtotalL += pL[count+107]; sumtotalR += pR[count+107];
case 28: sumtotalL += pL[count+103]; sumtotalR += pR[count+103];
case 27: sumtotalL += pL[count+101]; sumtotalR += pR[count+101];
case 26: sumtotalL += pL[count+97]; sumtotalR += pR[count+97];
case 25: sumtotalL += pL[count+89]; sumtotalR += pR[count+89];
case 24: sumtotalL += pL[count+83]; sumtotalR += pR[count+83];
case 23: sumtotalL += pL[count+79]; sumtotalR += pR[count+79];
case 22: sumtotalL += pL[count+73]; sumtotalR += pR[count+73];
case 21: sumtotalL += pL[count+71]; sumtotalR += pR[count+71];
case 20: sumtotalL += pL[count+67]; sumtotalR += pR[count+67];
case 19: sumtotalL += pL[count+61]; sumtotalR += pR[count+61];
case 18: sumtotalL += pL[count+59]; sumtotalR += pR[count+59];
case 17: sumtotalL += pL[count+53]; sumtotalR += pR[count+53];
case 16: sumtotalL += pL[count+47]; sumtotalR += pR[count+47];
case 15: sumtotalL += pL[count+43]; sumtotalR += pR[count+43];
case 14: sumtotalL += pL[count+41]; sumtotalR += pR[count+41];
case 13: sumtotalL += pL[count+37]; sumtotalR += pR[count+37];
case 12: sumtotalL += pL[count+31]; sumtotalR += pR[count+31];
case 11: sumtotalL += pL[count+29]; sumtotalR += pR[count+29];
case 10: sumtotalL += pL[count+23]; sumtotalR += pR[count+23];
case 9: sumtotalL += pL[count+19]; sumtotalR += pR[count+19];
case 8: sumtotalL += pL[count+17]; sumtotalR += pR[count+17];
case 7: sumtotalL += pL[count+13]; sumtotalR += pR[count+13];
case 6: sumtotalL += pL[count+11]; sumtotalR += pR[count+11];
case 5: sumtotalL += pL[count+7]; sumtotalR += pR[count+7];
case 4: sumtotalL += pL[count+5]; sumtotalR += pR[count+5];
case 3: sumtotalL += pL[count+3]; sumtotalR += pR[count+3];
case 2: sumtotalL += pL[count+2]; sumtotalR += pR[count+2];
case 1: sumtotalL += pL[count+1]; sumtotalR += pR[count+1];
}
floattotalL = (double)(sumtotalL/fatness+1);
floattotalR = (double)(sumtotalR/fatness+1);
floattotalL /= 8388608.0;
floattotalR /= 8388608.0;
floattotalL *= fatwet;
floattotalR *= fatwet;
if (leanfat < 0) {storedelayL = sumL-floattotalL; storedelayR = sumR-floattotalR;}
else {storedelayL = (sumL * (1-fatwet))+floattotalL; storedelayR = (sumR * (1-fatwet))+floattotalR;}
chase += abs(maxdelay - targetdelay);
if (chase > 9000)
{
if (maxdelay > targetdelay) {
dL[delay] = storedelayL; dR[delay] = storedelayR;
maxdelay -= 1; delay -= 1; if (delay < 0) {delay = maxdelay;}
dL[delay] = storedelayL; dR[delay] = storedelayR;
}
if (maxdelay < targetdelay) {
maxdelay += 1; delay += 1; if (delay > maxdelay) {delay = 0;}
dL[delay] = storedelayL; dR[delay] = storedelayR;
}
chase = 0;
}
else
{
dL[delay] = storedelayL; dR[delay] = storedelayR;
}
gcount--;
delay--;
if (delay < 0 || delay > maxdelay) {delay = maxdelay;}
//yes this is a second bounds check. it's cheap, check EVERY time
inputSampleL = (inputSampleL * dry) + (dL[delay] * wet);
inputSampleR = (inputSampleR * dry) + (dR[delay] * wet);
//stereo 32 bit dither, made small and tidy.
int expon; frexpf((float)inputSampleL, &expon);
long double dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62);
inputSampleL += (dither-fpNShapeL); fpNShapeL = dither;
frexpf((float)inputSampleR, &expon);
dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62);
inputSampleR += (dither-fpNShapeR); fpNShapeR = dither;
//end 32 bit dither
*out1 = inputSampleL;
*out2 = inputSampleR;
*in1++;
*in2++;
*out1++;
*out2++;
}
}
void TapeDelay::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames)
{
double* in1 = inputs[0];
double* in2 = inputs[1];
double* out1 = outputs[0];
double* out2 = outputs[1];
double dry = pow(A,2);
double wet = pow(B,2);
int targetdelay = (int)(44000*C);
double feedback = (D*1.3);
double leanfat = ((E*2.0)-1.0);
double fatwet = fabs(leanfat);
int fatness = (int)floor((F*29.0)+3.0);
int count;
double storedelayL;
double storedelayR;
double sumL = 0.0;
double sumR = 0.0;
double floattotalL = 0.0;
double floattotalR = 0.0;
int sumtotalL = 0;
int sumtotalR = 0;
while (--sampleFrames >= 0)
{
long double inputSampleL = *in1;
long double inputSampleR = *in2;
static int noisesourceL = 0;
static int noisesourceR = 850010;
int residue;
double applyresidue;
noisesourceL = noisesourceL % 1700021; noisesourceL++;
residue = noisesourceL * noisesourceL;
residue = residue % 170003; residue *= residue;
residue = residue % 17011; residue *= residue;
residue = residue % 1709; residue *= residue;
residue = residue % 173; residue *= residue;
residue = residue % 17;
applyresidue = residue;
applyresidue *= 0.00000001;
applyresidue *= 0.00000001;
inputSampleL += applyresidue;
if (inputSampleL<1.2e-38 && -inputSampleL<1.2e-38) {
inputSampleL -= applyresidue;
}
noisesourceR = noisesourceR % 1700021; noisesourceR++;
residue = noisesourceR * noisesourceR;
residue = residue % 170003; residue *= residue;
residue = residue % 17011; residue *= residue;
residue = residue % 1709; residue *= residue;
residue = residue % 173; residue *= residue;
residue = residue % 17;
applyresidue = residue;
applyresidue *= 0.00000001;
applyresidue *= 0.00000001;
inputSampleR += applyresidue;
if (inputSampleR<1.2e-38 && -inputSampleR<1.2e-38) {
inputSampleR -= applyresidue;
}
//for live air, we always apply the dither noise. Then, if our result is
//effectively digital black, we'll subtract it again. We want a 'air' hiss
if (gcount < 0 || gcount > 128) {gcount = 128;}
count = gcount;
if (delay < 0 || delay > maxdelay) {delay = maxdelay;}
sumL = inputSampleL + (dL[delay]*feedback);
sumR = inputSampleR + (dR[delay]*feedback);
pL[count+128] = pL[count] = sumtotalL = (int)(sumL*8388608.0);
pR[count+128] = pR[count] = sumtotalR = (int)(sumR*8388608.0);
switch (fatness)
{
case 32: sumtotalL += pL[count+127]; sumtotalR += pR[count+127]; //note NO break statement.
case 31: sumtotalL += pL[count+113]; sumtotalR += pR[count+113]; //This jumps to the relevant tap
case 30: sumtotalL += pL[count+109]; sumtotalR += pR[count+109]; //and then includes all smaller taps.
case 29: sumtotalL += pL[count+107]; sumtotalR += pR[count+107];
case 28: sumtotalL += pL[count+103]; sumtotalR += pR[count+103];
case 27: sumtotalL += pL[count+101]; sumtotalR += pR[count+101];
case 26: sumtotalL += pL[count+97]; sumtotalR += pR[count+97];
case 25: sumtotalL += pL[count+89]; sumtotalR += pR[count+89];
case 24: sumtotalL += pL[count+83]; sumtotalR += pR[count+83];
case 23: sumtotalL += pL[count+79]; sumtotalR += pR[count+79];
case 22: sumtotalL += pL[count+73]; sumtotalR += pR[count+73];
case 21: sumtotalL += pL[count+71]; sumtotalR += pR[count+71];
case 20: sumtotalL += pL[count+67]; sumtotalR += pR[count+67];
case 19: sumtotalL += pL[count+61]; sumtotalR += pR[count+61];
case 18: sumtotalL += pL[count+59]; sumtotalR += pR[count+59];
case 17: sumtotalL += pL[count+53]; sumtotalR += pR[count+53];
case 16: sumtotalL += pL[count+47]; sumtotalR += pR[count+47];
case 15: sumtotalL += pL[count+43]; sumtotalR += pR[count+43];
case 14: sumtotalL += pL[count+41]; sumtotalR += pR[count+41];
case 13: sumtotalL += pL[count+37]; sumtotalR += pR[count+37];
case 12: sumtotalL += pL[count+31]; sumtotalR += pR[count+31];
case 11: sumtotalL += pL[count+29]; sumtotalR += pR[count+29];
case 10: sumtotalL += pL[count+23]; sumtotalR += pR[count+23];
case 9: sumtotalL += pL[count+19]; sumtotalR += pR[count+19];
case 8: sumtotalL += pL[count+17]; sumtotalR += pR[count+17];
case 7: sumtotalL += pL[count+13]; sumtotalR += pR[count+13];
case 6: sumtotalL += pL[count+11]; sumtotalR += pR[count+11];
case 5: sumtotalL += pL[count+7]; sumtotalR += pR[count+7];
case 4: sumtotalL += pL[count+5]; sumtotalR += pR[count+5];
case 3: sumtotalL += pL[count+3]; sumtotalR += pR[count+3];
case 2: sumtotalL += pL[count+2]; sumtotalR += pR[count+2];
case 1: sumtotalL += pL[count+1]; sumtotalR += pR[count+1];
}
floattotalL = (double)(sumtotalL/fatness+1);
floattotalR = (double)(sumtotalR/fatness+1);
floattotalL /= 8388608.0;
floattotalR /= 8388608.0;
floattotalL *= fatwet;
floattotalR *= fatwet;
if (leanfat < 0) {storedelayL = sumL-floattotalL; storedelayR = sumR-floattotalR;}
else {storedelayL = (sumL * (1-fatwet))+floattotalL; storedelayR = (sumR * (1-fatwet))+floattotalR;}
chase += abs(maxdelay - targetdelay);
if (chase > 9000)
{
if (maxdelay > targetdelay) {
dL[delay] = storedelayL; dR[delay] = storedelayR;
maxdelay -= 1; delay -= 1; if (delay < 0) {delay = maxdelay;}
dL[delay] = storedelayL; dR[delay] = storedelayR;
}
if (maxdelay < targetdelay) {
maxdelay += 1; delay += 1; if (delay > maxdelay) {delay = 0;}
dL[delay] = storedelayL; dR[delay] = storedelayR;
}
chase = 0;
}
else
{
dL[delay] = storedelayL; dR[delay] = storedelayR;
}
gcount--;
delay--;
if (delay < 0 || delay > maxdelay) {delay = maxdelay;}
//yes this is a second bounds check. it's cheap, check EVERY time
inputSampleL = (inputSampleL * dry) + (dL[delay] * wet);
inputSampleR = (inputSampleR * dry) + (dR[delay] * wet);
//stereo 64 bit dither, made small and tidy.
int expon; frexp((double)inputSampleL, &expon);
long double dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62);
dither /= 536870912.0; //needs this to scale to 64 bit zone
inputSampleL += (dither-fpNShapeL); fpNShapeL = dither;
frexp((double)inputSampleR, &expon);
dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62);
dither /= 536870912.0; //needs this to scale to 64 bit zone
inputSampleR += (dither-fpNShapeR); fpNShapeR = dither;
//end 64 bit dither
*out1 = inputSampleL;
*out2 = inputSampleR;
*in1++;
*in2++;
*out1++;
*out2++;
}
}
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