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/* ========================================
* DeHiss - DeHiss.h
* Copyright (c) 2016 airwindows, All rights reserved
* ======================================== */
#ifndef __DeHiss_H
#include "DeHiss.h"
#endif
void DeHiss::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 meanAL;
double meanBL;
double meanOutL = 0;
double meanLastL;
double averageL[5];
double meanAR;
double meanBR;
double meanOutR = 0;
double meanLastR;
double averageR[5];
double threshold = pow(A,9);
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;
//begin L
storedL[1] = storedL[0];
storedL[0] = inputSampleL;
diffL[5] = diffL[4];
diffL[4] = diffL[3];
diffL[3] = diffL[2];
diffL[2] = diffL[1];
diffL[1] = diffL[0];
diffL[0] = storedL[0] - storedL[1];
averageL[4] = (diffL[0] + diffL[1] + diffL[2] + diffL[3] + diffL[4] + diffL[5])/6.0;
averageL[3] = (diffL[0] + diffL[1] + diffL[2] + diffL[3] + diffL[4])/5.0;
averageL[2] = (diffL[0] + diffL[1] + diffL[2] + diffL[3])/4.0;
averageL[1] = (diffL[0] + diffL[1] + diffL[2])/3.0;
averageL[0] = (diffL[0] + diffL[1])/2.0;
meanAL = diffL[0];
meanBL = diffL[0];
if (fabs(averageL[4]) < fabs(meanBL)) {meanAL = meanBL; meanBL = averageL[4];}
if (fabs(averageL[3]) < fabs(meanBL)) {meanAL = meanBL; meanBL = averageL[3];}
if (fabs(averageL[2]) < fabs(meanBL)) {meanAL = meanBL; meanBL = averageL[2];}
if (fabs(averageL[1]) < fabs(meanBL)) {meanAL = meanBL; meanBL = averageL[1];}
if (fabs(averageL[0]) < fabs(meanBL)) {meanAL = meanBL; meanBL = averageL[0];}
meanLastL = meanOutL;
meanOutL = ((meanAL+meanBL)/2.0);
if (rawL > 0) rawL -= 0.001;
if (fabs(inputSampleL) > threshold) {gateL = 1.0; rawL = 2.0;}
else {gateL = (gateL * 0.999); if (threshold > 0) gateL += ((fabs(inputSampleL)/threshold) * 0.001);}
if ((fabs(meanOutL) > threshold) || (fabs(meanLastL) > threshold)){}
else storedL[0] = storedL[1] + (meanOutL * gateL);
if (rawL < 1) inputSampleL = (inputSampleL * rawL) + (storedL[0] * (1-rawL));
//end L
//begin R
storedR[1] = storedR[0];
storedR[0] = inputSampleR;
diffR[5] = diffR[4];
diffR[4] = diffR[3];
diffR[3] = diffR[2];
diffR[2] = diffR[1];
diffR[1] = diffR[0];
diffR[0] = storedR[0] - storedR[1];
averageR[4] = (diffR[0] + diffR[1] + diffR[2] + diffR[3] + diffR[4] + diffR[5])/6.0;
averageR[3] = (diffR[0] + diffR[1] + diffR[2] + diffR[3] + diffR[4])/5.0;
averageR[2] = (diffR[0] + diffR[1] + diffR[2] + diffR[3])/4.0;
averageR[1] = (diffR[0] + diffR[1] + diffR[2])/3.0;
averageR[0] = (diffR[0] + diffR[1])/2.0;
meanAR = diffR[0];
meanBR = diffR[0];
if (fabs(averageR[4]) < fabs(meanBR)) {meanAR = meanBR; meanBR = averageR[4];}
if (fabs(averageR[3]) < fabs(meanBR)) {meanAR = meanBR; meanBR = averageR[3];}
if (fabs(averageR[2]) < fabs(meanBR)) {meanAR = meanBR; meanBR = averageR[2];}
if (fabs(averageR[1]) < fabs(meanBR)) {meanAR = meanBR; meanBR = averageR[1];}
if (fabs(averageR[0]) < fabs(meanBR)) {meanAR = meanBR; meanBR = averageR[0];}
meanLastR = meanOutR;
meanOutR = ((meanAR+meanBR)/2.0);
if (rawR > 0) rawR -= 0.001;
if (fabs(inputSampleR) > threshold) {gateR = 1.0; rawR = 2.0;}
else {gateR = (gateR * 0.999); if (threshold > 0) gateR += ((fabs(inputSampleR)/threshold) * 0.001);}
if ((fabs(meanOutR) > threshold) || (fabs(meanLastR) > threshold)){}
else storedR[0] = storedR[1] + (meanOutR * gateR);
if (rawR < 1) inputSampleR = (inputSampleR * rawR) + (storedR[0] * (1-rawR));
//end R
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 DeHiss::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 meanAL;
double meanBL;
double meanOutL = 0;
double meanLastL;
double averageL[5];
double meanAR;
double meanBR;
double meanOutR = 0;
double meanLastR;
double averageR[5];
double threshold = pow(A,9);
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;
//begin L
storedL[1] = storedL[0];
storedL[0] = inputSampleL;
diffL[5] = diffL[4];
diffL[4] = diffL[3];
diffL[3] = diffL[2];
diffL[2] = diffL[1];
diffL[1] = diffL[0];
diffL[0] = storedL[0] - storedL[1];
averageL[4] = (diffL[0] + diffL[1] + diffL[2] + diffL[3] + diffL[4] + diffL[5])/6.0;
averageL[3] = (diffL[0] + diffL[1] + diffL[2] + diffL[3] + diffL[4])/5.0;
averageL[2] = (diffL[0] + diffL[1] + diffL[2] + diffL[3])/4.0;
averageL[1] = (diffL[0] + diffL[1] + diffL[2])/3.0;
averageL[0] = (diffL[0] + diffL[1])/2.0;
meanAL = diffL[0];
meanBL = diffL[0];
if (fabs(averageL[4]) < fabs(meanBL)) {meanAL = meanBL; meanBL = averageL[4];}
if (fabs(averageL[3]) < fabs(meanBL)) {meanAL = meanBL; meanBL = averageL[3];}
if (fabs(averageL[2]) < fabs(meanBL)) {meanAL = meanBL; meanBL = averageL[2];}
if (fabs(averageL[1]) < fabs(meanBL)) {meanAL = meanBL; meanBL = averageL[1];}
if (fabs(averageL[0]) < fabs(meanBL)) {meanAL = meanBL; meanBL = averageL[0];}
meanLastL = meanOutL;
meanOutL = ((meanAL+meanBL)/2.0);
if (rawL > 0) rawL -= 0.001;
if (fabs(inputSampleL) > threshold) {gateL = 1.0; rawL = 2.0;}
else {gateL = (gateL * 0.999); if (threshold > 0) gateL += ((fabs(inputSampleL)/threshold) * 0.001);}
if ((fabs(meanOutL) > threshold) || (fabs(meanLastL) > threshold)){}
else storedL[0] = storedL[1] + (meanOutL * gateL);
if (rawL < 1) inputSampleL = (inputSampleL * rawL) + (storedL[0] * (1-rawL));
//end L
//begin R
storedR[1] = storedR[0];
storedR[0] = inputSampleR;
diffR[5] = diffR[4];
diffR[4] = diffR[3];
diffR[3] = diffR[2];
diffR[2] = diffR[1];
diffR[1] = diffR[0];
diffR[0] = storedR[0] - storedR[1];
averageR[4] = (diffR[0] + diffR[1] + diffR[2] + diffR[3] + diffR[4] + diffR[5])/6.0;
averageR[3] = (diffR[0] + diffR[1] + diffR[2] + diffR[3] + diffR[4])/5.0;
averageR[2] = (diffR[0] + diffR[1] + diffR[2] + diffR[3])/4.0;
averageR[1] = (diffR[0] + diffR[1] + diffR[2])/3.0;
averageR[0] = (diffR[0] + diffR[1])/2.0;
meanAR = diffR[0];
meanBR = diffR[0];
if (fabs(averageR[4]) < fabs(meanBR)) {meanAR = meanBR; meanBR = averageR[4];}
if (fabs(averageR[3]) < fabs(meanBR)) {meanAR = meanBR; meanBR = averageR[3];}
if (fabs(averageR[2]) < fabs(meanBR)) {meanAR = meanBR; meanBR = averageR[2];}
if (fabs(averageR[1]) < fabs(meanBR)) {meanAR = meanBR; meanBR = averageR[1];}
if (fabs(averageR[0]) < fabs(meanBR)) {meanAR = meanBR; meanBR = averageR[0];}
meanLastR = meanOutR;
meanOutR = ((meanAR+meanBR)/2.0);
if (rawR > 0) rawR -= 0.001;
if (fabs(inputSampleR) > threshold) {gateR = 1.0; rawR = 2.0;}
else {gateR = (gateR * 0.999); if (threshold > 0) gateR += ((fabs(inputSampleR)/threshold) * 0.001);}
if ((fabs(meanOutR) > threshold) || (fabs(meanLastR) > threshold)){}
else storedR[0] = storedR[1] + (meanOutR * gateR);
if (rawR < 1) inputSampleR = (inputSampleR * rawR) + (storedR[0] * (1-rawR));
//end R
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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