/* ========================================
* Channel6 - Channel6.h
* Copyright (c) 2016 airwindows, All rights reserved
* ======================================== */
#ifndef __Channel6_H
#include "Channel6.h"
#endif
void Channel6::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();
const double localiirAmount = iirAmount / overallscale;
const double localthreshold = threshold / overallscale;
const double density = pow(drive,2); //this doesn't relate to the plugins Density and Drive much
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 (flip)
{
iirSampleLA = (iirSampleLA * (1 - localiirAmount)) + (inputSampleL * localiirAmount);
inputSampleL = inputSampleL - iirSampleLA;
iirSampleRA = (iirSampleRA * (1 - localiirAmount)) + (inputSampleR * localiirAmount);
inputSampleR = inputSampleR - iirSampleRA;
}
else
{
iirSampleLB = (iirSampleLB * (1 - localiirAmount)) + (inputSampleL * localiirAmount);
inputSampleL = inputSampleL - iirSampleLB;
iirSampleRB = (iirSampleRB * (1 - localiirAmount)) + (inputSampleR * localiirAmount);
inputSampleR = inputSampleR - iirSampleRB;
}
//highpass section
long double drySampleL = inputSampleL;
long double drySampleR = inputSampleR;
if (inputSampleL > 1.0) inputSampleL = 1.0;
if (inputSampleL < -1.0) inputSampleL = -1.0;
inputSampleL *= 1.2533141373155;
//clip to 1.2533141373155 to reach maximum output
long double distSampleL = sin(inputSampleL * fabs(inputSampleL)) / ((inputSampleL == 0.0) ?1:fabs(inputSampleL));
inputSampleL = (drySampleL*(1-density))+(distSampleL*density);
//drive section
if (inputSampleR > 1.0) inputSampleR = 1.0;
if (inputSampleR < -1.0) inputSampleR = -1.0;
inputSampleR *= 1.2533141373155;
//clip to 1.2533141373155 to reach maximum output
long double distSampleR = sin(inputSampleR * fabs(inputSampleR)) / ((inputSampleR == 0.0) ?1:fabs(inputSampleR));
inputSampleR = (drySampleR*(1-density))+(distSampleR*density);
//drive section
double clamp = inputSampleL - lastSampleL;
if (clamp > localthreshold)
inputSampleL = lastSampleL + localthreshold;
if (-clamp > localthreshold)
inputSampleL = lastSampleL - localthreshold;
lastSampleL = inputSampleL;
clamp = inputSampleR - lastSampleR;
if (clamp > localthreshold)
inputSampleR = lastSampleR + localthreshold;
if (-clamp > localthreshold)
inputSampleR = lastSampleR - localthreshold;
lastSampleR = inputSampleR;
//slew section
flip = !flip;
if (output < 1.0) {
inputSampleL *= output;
inputSampleR *= output;
}
//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 Channel6::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();
const double localiirAmount = iirAmount / overallscale;
const double localthreshold = threshold / overallscale;
const double density = pow(drive,2); //this doesn't relate to the plugins Density and Drive much
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 (flip)
{
iirSampleLA = (iirSampleLA * (1 - localiirAmount)) + (inputSampleL * localiirAmount);
inputSampleL = inputSampleL - iirSampleLA;
iirSampleRA = (iirSampleRA * (1 - localiirAmount)) + (inputSampleR * localiirAmount);
inputSampleR = inputSampleR - iirSampleRA;
}
else
{
iirSampleLB = (iirSampleLB * (1 - localiirAmount)) + (inputSampleL * localiirAmount);
inputSampleL = inputSampleL - iirSampleLB;
iirSampleRB = (iirSampleRB * (1 - localiirAmount)) + (inputSampleR * localiirAmount);
inputSampleR = inputSampleR - iirSampleRB;
}
//highpass section
long double drySampleL = inputSampleL;
long double drySampleR = inputSampleR;
if (inputSampleL > 1.0) inputSampleL = 1.0;
if (inputSampleL < -1.0) inputSampleL = -1.0;
inputSampleL *= 1.2533141373155;
//clip to 1.2533141373155 to reach maximum output
long double distSampleL = sin(inputSampleL * fabs(inputSampleL)) / ((inputSampleL == 0.0) ?1:fabs(inputSampleL));
inputSampleL = (drySampleL*(1-density))+(distSampleL*density);
//drive section
if (inputSampleR > 1.0) inputSampleR = 1.0;
if (inputSampleR < -1.0) inputSampleR = -1.0;
inputSampleR *= 1.2533141373155;
//clip to 1.2533141373155 to reach maximum output
long double distSampleR = sin(inputSampleR * fabs(inputSampleR)) / ((inputSampleR == 0.0) ?1:fabs(inputSampleR));
inputSampleR = (drySampleR*(1-density))+(distSampleR*density);
//drive section
double clamp = inputSampleL - lastSampleL;
if (clamp > localthreshold)
inputSampleL = lastSampleL + localthreshold;
if (-clamp > localthreshold)
inputSampleL = lastSampleL - localthreshold;
lastSampleL = inputSampleL;
clamp = inputSampleR - lastSampleR;
if (clamp > localthreshold)
inputSampleR = lastSampleR + localthreshold;
if (-clamp > localthreshold)
inputSampleR = lastSampleR - localthreshold;
lastSampleR = inputSampleR;
//slew section
flip = !flip;
if (output < 1.0) {
inputSampleL *= output;
inputSampleR *= output;
}
//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++;
}
}
