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/* ========================================
* DigitalBlack - DigitalBlack.h
* Copyright (c) 2016 airwindows, All rights reserved
* ======================================== */
#ifndef __DigitalBlack_H
#include "DigitalBlack.h"
#endif
void DigitalBlack::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 threshold = (pow(A,4)/3)+0.00018;
double release = 0.0064 / overallscale;
double wet = B;
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;
long double drySampleL = inputSampleL;
long double drySampleR = inputSampleR;
if (inputSampleL > 0) {
if (WasNegativeL == true) ZeroCrossL = 0;
WasNegativeL = false;
} else {
ZeroCrossL += 1;
WasNegativeL = true;
}
if (inputSampleR > 0) {
if (WasNegativeR == true) ZeroCrossR = 0;
WasNegativeR = false;
} else {
ZeroCrossR += 1;
WasNegativeR = true;
}
if (ZeroCrossL > 6000) ZeroCrossL = 6000;
if (ZeroCrossR > 6000) ZeroCrossR = 6000;
if (fabs(inputSampleL) > threshold) {
if (gaterollerL < ZeroCrossL) gaterollerL = ZeroCrossL;
} else {
gaterollerL -= release;
}
if (fabs(inputSampleR) > threshold) {
if (gaterollerR < ZeroCrossR) gaterollerR = ZeroCrossR;
} else {
gaterollerR -= release;
}
if (gaterollerL < 0.0) gaterollerL = 0.0;
if (gaterollerR < 0.0) gaterollerR = 0.0;
double gate = 1.0;
if (gaterollerL < 1.0) gate = gaterollerL;
long double bridgerectifier = 1-cos(fabs(inputSampleL));
if (inputSampleL > 0) inputSampleL = (inputSampleL*gate)+(bridgerectifier*(1-gate));
else inputSampleL = (inputSampleL*gate)-(bridgerectifier*(1-gate));
if ((gate == 0.0) && (fabs(inputSampleL*3) < threshold)) inputSampleL = 0.0;
gate = 1.0;
if (gaterollerR < 1.0) gate = gaterollerR;
bridgerectifier = 1-cos(fabs(inputSampleR));
if (inputSampleR > 0) inputSampleR = (inputSampleR*gate)+(bridgerectifier*(1-gate));
else inputSampleR = (inputSampleR*gate)-(bridgerectifier*(1-gate));
if ((gate == 0.0) && (fabs(inputSampleR*3) < threshold)) inputSampleR = 0.0;
if (wet !=1.0) {
inputSampleL = (inputSampleL * wet) + (drySampleL * (1.0-wet));
inputSampleR = (inputSampleR * wet) + (drySampleR * (1.0-wet));
}
//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 DigitalBlack::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 threshold = (pow(A,4)/3)+0.00018;
double release = 0.0064 / overallscale;
double wet = B;
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;
long double drySampleL = inputSampleL;
long double drySampleR = inputSampleR;
if (inputSampleL > 0) {
if (WasNegativeL == true) ZeroCrossL = 0;
WasNegativeL = false;
} else {
ZeroCrossL += 1;
WasNegativeL = true;
}
if (inputSampleR > 0) {
if (WasNegativeR == true) ZeroCrossR = 0;
WasNegativeR = false;
} else {
ZeroCrossR += 1;
WasNegativeR = true;
}
if (ZeroCrossL > 6000) ZeroCrossL = 6000;
if (ZeroCrossR > 6000) ZeroCrossR = 6000;
if (fabs(inputSampleL) > threshold) {
if (gaterollerL < ZeroCrossL) gaterollerL = ZeroCrossL;
} else {
gaterollerL -= release;
}
if (fabs(inputSampleR) > threshold) {
if (gaterollerR < ZeroCrossR) gaterollerR = ZeroCrossR;
} else {
gaterollerR -= release;
}
if (gaterollerL < 0.0) gaterollerL = 0.0;
if (gaterollerR < 0.0) gaterollerR = 0.0;
double gate = 1.0;
if (gaterollerL < 1.0) gate = gaterollerL;
long double bridgerectifier = 1-cos(fabs(inputSampleL));
if (inputSampleL > 0) inputSampleL = (inputSampleL*gate)+(bridgerectifier*(1-gate));
else inputSampleL = (inputSampleL*gate)-(bridgerectifier*(1-gate));
if ((gate == 0.0) && (fabs(inputSampleL*3) < threshold)) inputSampleL = 0.0;
gate = 1.0;
if (gaterollerR < 1.0) gate = gaterollerR;
bridgerectifier = 1-cos(fabs(inputSampleR));
if (inputSampleR > 0) inputSampleR = (inputSampleR*gate)+(bridgerectifier*(1-gate));
else inputSampleR = (inputSampleR*gate)-(bridgerectifier*(1-gate));
if ((gate == 0.0) && (fabs(inputSampleR*3) < threshold)) inputSampleR = 0.0;
if (wet !=1.0) {
inputSampleL = (inputSampleL * wet) + (drySampleL * (1.0-wet));
inputSampleR = (inputSampleR * wet) + (drySampleR * (1.0-wet));
}
//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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