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/* ========================================
* Channel7 - Channel7.h
* Copyright (c) 2016 airwindows, All rights reserved
* ======================================== */
#ifndef __Channel7_H
#include "Channel7.h"
#endif
void Channel7::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 localiirAmount = iirAmount / overallscale;
double localthreshold = threshold; //we've learned not to try and adjust threshold for sample rate
double density = drive*2.0; //0-2
double phattity = density - 1.0;
if (density > 1.0) density = 1.0; //max out at full wet for Spiral aspect
if (phattity < 0.0) phattity = 0.0; //
while (--sampleFrames >= 0)
{
long double inputSampleL = *in1;
long double inputSampleR = *in2;
if (fabs(inputSampleL)<1.18e-37) inputSampleL = fpd * 1.18e-37;
if (fabs(inputSampleR)<1.18e-37) inputSampleR = fpd * 1.18e-37;
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;
long double phatSampleL = sin(inputSampleL * 1.57079633);
inputSampleL *= 1.2533141373155;
//clip to 1.2533141373155 to reach maximum output, or 1.57079633 for pure sine 'phat' version
long double distSampleL = sin(inputSampleL * fabs(inputSampleL)) / ((inputSampleL == 0.0) ?1:fabs(inputSampleL));
inputSampleL = distSampleL; //purest form is full Spiral
if (density < 1.0) inputSampleL = (drySampleL*(1-density))+(distSampleL*density); //fade Spiral aspect
if (phattity > 0.0) inputSampleL = (inputSampleL*(1-phattity))+(phatSampleL*phattity); //apply original Density on top
if (inputSampleR > 1.0) inputSampleR = 1.0;
if (inputSampleR < -1.0) inputSampleR = -1.0;
long double phatSampleR = sin(inputSampleR * 1.57079633);
inputSampleR *= 1.2533141373155;
//clip to 1.2533141373155 to reach maximum output, or 1.57079633 for pure sine 'phat' version
long double distSampleR = sin(inputSampleR * fabs(inputSampleR)) / ((inputSampleR == 0.0) ?1:fabs(inputSampleR));
inputSampleR = distSampleR; //purest form is full Spiral
if (density < 1.0) inputSampleR = (drySampleR*(1-density))+(distSampleR*density); //fade Spiral aspect
if (phattity > 0.0) inputSampleR = (inputSampleR*(1-phattity))+(phatSampleR*phattity); //apply original Density on top
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;
}
//begin 32 bit stereo floating point dither
int expon; frexpf((float)inputSampleL, &expon);
fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5;
inputSampleL += ((double(fpd)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
frexpf((float)inputSampleR, &expon);
fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5;
inputSampleR += ((double(fpd)-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 Channel7::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 localiirAmount = iirAmount / overallscale;
double localthreshold = threshold; //we've learned not to try and adjust threshold for sample rate
double density = drive*2.0; //0-2
double phattity = density - 1.0;
if (density > 1.0) density = 1.0; //max out at full wet for Spiral aspect
if (phattity < 0.0) phattity = 0.0; //
while (--sampleFrames >= 0)
{
long double inputSampleL = *in1;
long double inputSampleR = *in2;
if (fabs(inputSampleL)<1.18e-43) inputSampleL = fpd * 1.18e-43;
if (fabs(inputSampleR)<1.18e-43) inputSampleR = fpd * 1.18e-43;
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;
long double phatSampleL = sin(inputSampleL * 1.57079633);
inputSampleL *= 1.2533141373155;
//clip to 1.2533141373155 to reach maximum output, or 1.57079633 for pure sine 'phat' version
long double distSampleL = sin(inputSampleL * fabs(inputSampleL)) / ((inputSampleL == 0.0) ?1:fabs(inputSampleL));
inputSampleL = distSampleL; //purest form is full Spiral
if (density < 1.0) inputSampleL = (drySampleL*(1-density))+(distSampleL*density); //fade Spiral aspect
if (phattity > 0.0) inputSampleL = (inputSampleL*(1-phattity))+(phatSampleL*phattity); //apply original Density on top
if (inputSampleR > 1.0) inputSampleR = 1.0;
if (inputSampleR < -1.0) inputSampleR = -1.0;
long double phatSampleR = sin(inputSampleR * 1.57079633);
inputSampleR *= 1.2533141373155;
//clip to 1.2533141373155 to reach maximum output, or 1.57079633 for pure sine 'phat' version
long double distSampleR = sin(inputSampleR * fabs(inputSampleR)) / ((inputSampleR == 0.0) ?1:fabs(inputSampleR));
inputSampleR = distSampleR; //purest form is full Spiral
if (density < 1.0) inputSampleR = (drySampleR*(1-density))+(distSampleR*density); //fade Spiral aspect
if (phattity > 0.0) inputSampleR = (inputSampleR*(1-phattity))+(phatSampleR*phattity); //apply original Density on top
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;
}
//begin 64 bit stereo floating point dither
int expon; frexp((double)inputSampleL, &expon);
fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5;
inputSampleL += ((double(fpd)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
frexp((double)inputSampleR, &expon);
fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5;
inputSampleR += ((double(fpd)-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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