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/* ========================================
* Remap - Remap.h
* Copyright (c) 2016 airwindows, All rights reserved
* ======================================== */
#ifndef __Remap_H
#include "Remap.h"
#endif
void Remap::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames)
{
float* in1 = inputs[0];
float* in2 = inputs[1];
float* out1 = outputs[0];
float* out2 = outputs[1];
double drive = A * 0.5;
double gain = (drive+0.2)*8;
double out = B;
double wet = C;
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;
long double gaintrimL = fabs(inputSampleL);
long double gaintrimR = fabs(inputSampleR);
long double bridgerectifierL = gaintrimL*gain;
long double bridgerectifierR = gaintrimR*gain;
if (gaintrimL > 1.0) gaintrimL = 1.0;
else gaintrimL *= gaintrimL;
if (gaintrimR > 1.0) gaintrimR = 1.0;
else gaintrimR *= gaintrimR;
if (inputSampleL > 1.57079633) bridgerectifierL = 1.0-(1.0-sin(bridgerectifierL));
else bridgerectifierL = sin(bridgerectifierL);
if (inputSampleR > 1.57079633) bridgerectifierR = 1.0-(1.0-sin(bridgerectifierR));
else bridgerectifierR = sin(bridgerectifierR);
if (inputSampleL > 0) inputSampleL -= (bridgerectifierL*gaintrimL*drive);
else inputSampleL += (bridgerectifierL*gaintrimL*drive);
if (inputSampleR > 0) inputSampleR -= (bridgerectifierR*gaintrimR*drive);
else inputSampleR += (bridgerectifierR*gaintrimR*drive);
if (out < 1.0) {
inputSampleL *= out;
inputSampleR *= out;
}
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 Remap::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames)
{
double* in1 = inputs[0];
double* in2 = inputs[1];
double* out1 = outputs[0];
double* out2 = outputs[1];
double drive = A * 0.5;
double gain = (drive+0.2)*8;
double out = B;
double wet = C;
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;
long double gaintrimL = fabs(inputSampleL);
long double gaintrimR = fabs(inputSampleR);
long double bridgerectifierL = gaintrimL*gain;
long double bridgerectifierR = gaintrimR*gain;
if (gaintrimL > 1.0) gaintrimL = 1.0;
else gaintrimL *= gaintrimL;
if (gaintrimR > 1.0) gaintrimR = 1.0;
else gaintrimR *= gaintrimR;
if (inputSampleL > 1.57079633) bridgerectifierL = 1.0-(1.0-sin(bridgerectifierL));
else bridgerectifierL = sin(bridgerectifierL);
if (inputSampleR > 1.57079633) bridgerectifierR = 1.0-(1.0-sin(bridgerectifierR));
else bridgerectifierR = sin(bridgerectifierR);
if (inputSampleL > 0) inputSampleL -= (bridgerectifierL*gaintrimL*drive);
else inputSampleL += (bridgerectifierL*gaintrimL*drive);
if (inputSampleR > 0) inputSampleR -= (bridgerectifierR*gaintrimR*drive);
else inputSampleR += (bridgerectifierR*gaintrimR*drive);
if (out < 1.0) {
inputSampleL *= out;
inputSampleR *= out;
}
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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