/* ========================================
* BrassRider - BrassRider.h
* Copyright (c) 2016 airwindows, All rights reserved
* ======================================== */
#ifndef __BrassRider_H
#include "BrassRider.h"
#endif
void BrassRider::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames)
{
float* in1 = inputs[0];
float* in2 = inputs[1];
float* out1 = outputs[0];
float* out2 = outputs[1];
double limitOut = A*16;
int offsetA = 13500;
int offsetB = 16700;
double wet = B;
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
long double drySampleL = inputSampleL;
long double drySampleR = inputSampleR;
inputSampleL *= limitOut;
highIIRL = (highIIRL*0.5);
highIIRL += (inputSampleL*0.5);
inputSampleL -= highIIRL;
highIIR2L = (highIIR2L*0.5);
highIIR2L += (inputSampleL*0.5);
inputSampleL -= highIIR2L;
long double slewSampleL = fabs(inputSampleL - lastSampleL);
lastSampleL = inputSampleL;
slewSampleL /= fabs(inputSampleL * lastSampleL)+0.2;
slewIIRL = (slewIIRL*0.5);
slewIIRL += (slewSampleL*0.5);
slewSampleL = fabs(slewSampleL - slewIIRL);
slewIIR2L = (slewIIR2L*0.5);
slewIIR2L += (slewSampleL*0.5);
slewSampleL = fabs(slewSampleL - slewIIR2L);
long double bridgerectifier = slewSampleL;
//there's the left channel, now to feed it to overall clamp
if (bridgerectifier > 3.1415) bridgerectifier = 0.0;
bridgerectifier = sin(bridgerectifier);
if (gcount < 0 || gcount > 40000) {gcount = 40000;}
d[gcount+40000] = d[gcount] = bridgerectifier;
control += (d[gcount] / (offsetA+1));
control -= (d[gcount+offsetA] / offsetA);
double ramp = (control*control) * 16.0;
e[gcount+40000] = e[gcount] = ramp;
clamp += (e[gcount] / (offsetB+1));
clamp -= (e[gcount+offsetB] / offsetB);
if (clamp > wet*8) clamp = wet*8;
gcount--;
inputSampleR *= limitOut;
highIIRR = (highIIRR*0.5);
highIIRR += (inputSampleR*0.5);
inputSampleR -= highIIRR;
highIIR2R = (highIIR2R*0.5);
highIIR2R += (inputSampleR*0.5);
inputSampleR -= highIIR2R;
long double slewSampleR = fabs(inputSampleR - lastSampleR);
lastSampleR = inputSampleR;
slewSampleR /= fabs(inputSampleR * lastSampleR)+0.2;
slewIIRR = (slewIIRR*0.5);
slewIIRR += (slewSampleR*0.5);
slewSampleR = fabs(slewSampleR - slewIIRR);
slewIIR2R = (slewIIR2R*0.5);
slewIIR2R += (slewSampleR*0.5);
slewSampleR = fabs(slewSampleR - slewIIR2R);
bridgerectifier = slewSampleR;
//there's the right channel, now to feed it to overall clamp
if (bridgerectifier > 3.1415) bridgerectifier = 0.0;
bridgerectifier = sin(bridgerectifier);
if (gcount < 0 || gcount > 40000) {gcount = 40000;}
d[gcount+40000] = d[gcount] = bridgerectifier;
control += (d[gcount] / (offsetA+1));
control -= (d[gcount+offsetA] / offsetA);
ramp = (control*control) * 16.0;
e[gcount+40000] = e[gcount] = ramp;
clamp += (e[gcount] / (offsetB+1));
clamp -= (e[gcount+offsetB] / offsetB);
if (clamp > wet*8) clamp = wet*8;
gcount--;
inputSampleL = (drySampleL * (1.0-wet)) + (drySampleL * clamp * wet * 16.0);
inputSampleR = (drySampleR * (1.0-wet)) + (drySampleR * clamp * wet * 16.0);
//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 BrassRider::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames)
{
double* in1 = inputs[0];
double* in2 = inputs[1];
double* out1 = outputs[0];
double* out2 = outputs[1];
double limitOut = A*16;
int offsetA = 13500;
int offsetB = 16700;
double wet = B;
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
long double drySampleL = inputSampleL;
long double drySampleR = inputSampleR;
inputSampleL *= limitOut;
highIIRL = (highIIRL*0.5);
highIIRL += (inputSampleL*0.5);
inputSampleL -= highIIRL;
highIIR2L = (highIIR2L*0.5);
highIIR2L += (inputSampleL*0.5);
inputSampleL -= highIIR2L;
long double slewSampleL = fabs(inputSampleL - lastSampleL);
lastSampleL = inputSampleL;
slewSampleL /= fabs(inputSampleL * lastSampleL)+0.2;
slewIIRL = (slewIIRL*0.5);
slewIIRL += (slewSampleL*0.5);
slewSampleL = fabs(slewSampleL - slewIIRL);
slewIIR2L = (slewIIR2L*0.5);
slewIIR2L += (slewSampleL*0.5);
slewSampleL = fabs(slewSampleL - slewIIR2L);
long double bridgerectifier = slewSampleL;
//there's the left channel, now to feed it to overall clamp
if (bridgerectifier > 3.1415) bridgerectifier = 0.0;
bridgerectifier = sin(bridgerectifier);
if (gcount < 0 || gcount > 40000) {gcount = 40000;}
d[gcount+40000] = d[gcount] = bridgerectifier;
control += (d[gcount] / (offsetA+1));
control -= (d[gcount+offsetA] / offsetA);
double ramp = (control*control) * 16.0;
e[gcount+40000] = e[gcount] = ramp;
clamp += (e[gcount] / (offsetB+1));
clamp -= (e[gcount+offsetB] / offsetB);
if (clamp > wet*8) clamp = wet*8;
gcount--;
inputSampleR *= limitOut;
highIIRR = (highIIRR*0.5);
highIIRR += (inputSampleR*0.5);
inputSampleR -= highIIRR;
highIIR2R = (highIIR2R*0.5);
highIIR2R += (inputSampleR*0.5);
inputSampleR -= highIIR2R;
long double slewSampleR = fabs(inputSampleR - lastSampleR);
lastSampleR = inputSampleR;
slewSampleR /= fabs(inputSampleR * lastSampleR)+0.2;
slewIIRR = (slewIIRR*0.5);
slewIIRR += (slewSampleR*0.5);
slewSampleR = fabs(slewSampleR - slewIIRR);
slewIIR2R = (slewIIR2R*0.5);
slewIIR2R += (slewSampleR*0.5);
slewSampleR = fabs(slewSampleR - slewIIR2R);
bridgerectifier = slewSampleR;
//there's the right channel, now to feed it to overall clamp
if (bridgerectifier > 3.1415) bridgerectifier = 0.0;
bridgerectifier = sin(bridgerectifier);
if (gcount < 0 || gcount > 40000) {gcount = 40000;}
d[gcount+40000] = d[gcount] = bridgerectifier;
control += (d[gcount] / (offsetA+1));
control -= (d[gcount+offsetA] / offsetA);
ramp = (control*control) * 16.0;
e[gcount+40000] = e[gcount] = ramp;
clamp += (e[gcount] / (offsetB+1));
clamp -= (e[gcount+offsetB] / offsetB);
if (clamp > wet*8) clamp = wet*8;
gcount--;
inputSampleL = (drySampleL * (1.0-wet)) + (drySampleL * clamp * wet * 16.0);
inputSampleR = (drySampleR * (1.0-wet)) + (drySampleR * clamp * wet * 16.0);
//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++;
}
}
