/* ========================================
* PhaseNudge - PhaseNudge.h
* Copyright (c) 2016 airwindows, All rights reserved
* ======================================== */
#ifndef __PhaseNudge_H
#include "PhaseNudge.h"
#endif
void PhaseNudge::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames)
{
float* in1 = inputs[0];
float* in2 = inputs[1];
float* out1 = outputs[0];
float* out2 = outputs[1];
int allpasstemp;
double outallpass = 0.618033988749894848204586; //golden ratio!
//if you see 0.6180 it's not a wild stretch to wonder whether you are working with a constant
int maxdelayTarget = (int)(pow(A,3)*1501.0);
double wet = B;
double dry = 1.0 - wet;
double bridgerectifier;
long double inputSampleL;
long double inputSampleR;
long double drySampleL;
long double drySampleR;
while (--sampleFrames >= 0)
{
inputSampleL = *in1;
inputSampleR = *in2;
if (inputSampleL<1.2e-38 && -inputSampleL<1.2e-38) {
static int noisesource = 0;
//this declares a variable before anything else is compiled. It won't keep assigning
//it to 0 for every sample, it's as if the declaration doesn't exist in this context,
//but it lets me add this denormalization fix in a single place rather than updating
//it in three different locations. The variable isn't thread-safe but this is only
//a random seed and we can share it with whatever.
noisesource = noisesource % 1700021; noisesource++;
int residue = noisesource * noisesource;
residue = residue % 170003; residue *= residue;
residue = residue % 17011; residue *= residue;
residue = residue % 1709; residue *= residue;
residue = residue % 173; residue *= residue;
residue = residue % 17;
double applyresidue = residue;
applyresidue *= 0.00000001;
applyresidue *= 0.00000001;
inputSampleL = applyresidue;
}
if (inputSampleR<1.2e-38 && -inputSampleR<1.2e-38) {
static int noisesource = 0;
noisesource = noisesource % 1700021; noisesource++;
int residue = noisesource * noisesource;
residue = residue % 170003; residue *= residue;
residue = residue % 17011; residue *= residue;
residue = residue % 1709; residue *= residue;
residue = residue % 173; residue *= residue;
residue = residue % 17;
double applyresidue = residue;
applyresidue *= 0.00000001;
applyresidue *= 0.00000001;
inputSampleR = applyresidue;
//this denormalization routine produces a white noise at -300 dB which the noise
//shaping will interact with to produce a bipolar output, but the noise is actually
//all positive. That should stop any variables from going denormal, and the routine
//only kicks in if digital black is input. As a final touch, if you save to 24-bit
//the silence will return to being digital black again.
}
drySampleL = inputSampleL;
drySampleR = inputSampleR;
inputSampleL /= 4.0;
inputSampleR /= 4.0;
bridgerectifier = fabs(inputSampleL);
bridgerectifier = sin(bridgerectifier);
if (inputSampleL > 0) inputSampleL = bridgerectifier;
else inputSampleL = -bridgerectifier;
bridgerectifier = fabs(inputSampleR);
bridgerectifier = sin(bridgerectifier);
if (inputSampleR > 0) inputSampleR = bridgerectifier;
else inputSampleR = -bridgerectifier;
if (fabs(maxdelay - maxdelayTarget) > 1500) maxdelay = maxdelayTarget;
if (maxdelay < maxdelayTarget) {
maxdelay++;
dL[maxdelay] = (dL[0]+dL[maxdelay-1]) / 2.0;
dR[maxdelay] = (dR[0]+dR[maxdelay-1]) / 2.0;
}
if (maxdelay > maxdelayTarget) {
maxdelay--;
dL[maxdelay] = (dL[0]+dL[maxdelay]) / 2.0;
dR[maxdelay] = (dR[0]+dR[maxdelay]) / 2.0;
}
allpasstemp = one - 1;
if (allpasstemp < 0 || allpasstemp > maxdelay) allpasstemp = maxdelay;
inputSampleL -= dL[allpasstemp]*outallpass;
inputSampleR -= dR[allpasstemp]*outallpass;
dL[one] = inputSampleL;
dR[one] = inputSampleR;
inputSampleL *= outallpass;
inputSampleR *= outallpass;
one--; if (one < 0 || one > maxdelay) {one = maxdelay;}
inputSampleL += (dL[one]);
inputSampleR += (dR[one]);
bridgerectifier = fabs(inputSampleL);
bridgerectifier = 1.0-cos(bridgerectifier);
if (inputSampleL > 0) inputSampleL -= bridgerectifier;
else inputSampleL += bridgerectifier;
bridgerectifier = fabs(inputSampleR);
bridgerectifier = 1.0-cos(bridgerectifier);
if (inputSampleR > 0) inputSampleR -= bridgerectifier;
else inputSampleR += bridgerectifier;
inputSampleL *= 4.0;
inputSampleR *= 4.0;
if (wet < 1.0) {
inputSampleL = (drySampleL * dry)+(inputSampleL * wet);
inputSampleR = (drySampleR * dry)+(inputSampleR * wet);
}
//stereo 32 bit dither, made small and tidy.
int expon; frexpf((float)inputSampleL, &expon);
long double dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62);
inputSampleL += (dither-fpNShapeL); fpNShapeL = dither;
frexpf((float)inputSampleR, &expon);
dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62);
inputSampleR += (dither-fpNShapeR); fpNShapeR = dither;
//end 32 bit dither
*out1 = inputSampleL;
*out2 = inputSampleR;
*in1++;
*in2++;
*out1++;
*out2++;
}
}
void PhaseNudge::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames)
{
double* in1 = inputs[0];
double* in2 = inputs[1];
double* out1 = outputs[0];
double* out2 = outputs[1];
int allpasstemp;
double outallpass = 0.618033988749894848204586; //golden ratio!
//if you see 0.6180 it's not a wild stretch to wonder whether you are working with a constant
int maxdelayTarget = (int)(pow(A,3)*1501.0);
double wet = B;
double dry = 1.0 - wet;
double bridgerectifier;
long double inputSampleL;
long double inputSampleR;
long double drySampleL;
long double drySampleR;
while (--sampleFrames >= 0)
{
inputSampleL = *in1;
inputSampleR = *in2;
if (inputSampleL<1.2e-38 && -inputSampleL<1.2e-38) {
static int noisesource = 0;
//this declares a variable before anything else is compiled. It won't keep assigning
//it to 0 for every sample, it's as if the declaration doesn't exist in this context,
//but it lets me add this denormalization fix in a single place rather than updating
//it in three different locations. The variable isn't thread-safe but this is only
//a random seed and we can share it with whatever.
noisesource = noisesource % 1700021; noisesource++;
int residue = noisesource * noisesource;
residue = residue % 170003; residue *= residue;
residue = residue % 17011; residue *= residue;
residue = residue % 1709; residue *= residue;
residue = residue % 173; residue *= residue;
residue = residue % 17;
double applyresidue = residue;
applyresidue *= 0.00000001;
applyresidue *= 0.00000001;
inputSampleL = applyresidue;
}
if (inputSampleR<1.2e-38 && -inputSampleR<1.2e-38) {
static int noisesource = 0;
noisesource = noisesource % 1700021; noisesource++;
int residue = noisesource * noisesource;
residue = residue % 170003; residue *= residue;
residue = residue % 17011; residue *= residue;
residue = residue % 1709; residue *= residue;
residue = residue % 173; residue *= residue;
residue = residue % 17;
double applyresidue = residue;
applyresidue *= 0.00000001;
applyresidue *= 0.00000001;
inputSampleR = applyresidue;
//this denormalization routine produces a white noise at -300 dB which the noise
//shaping will interact with to produce a bipolar output, but the noise is actually
//all positive. That should stop any variables from going denormal, and the routine
//only kicks in if digital black is input. As a final touch, if you save to 24-bit
//the silence will return to being digital black again.
}
drySampleL = inputSampleL;
drySampleR = inputSampleR;
inputSampleL /= 4.0;
inputSampleR /= 4.0;
bridgerectifier = fabs(inputSampleL);
bridgerectifier = sin(bridgerectifier);
if (inputSampleL > 0) inputSampleL = bridgerectifier;
else inputSampleL = -bridgerectifier;
bridgerectifier = fabs(inputSampleR);
bridgerectifier = sin(bridgerectifier);
if (inputSampleR > 0) inputSampleR = bridgerectifier;
else inputSampleR = -bridgerectifier;
if (fabs(maxdelay - maxdelayTarget) > 1500) maxdelay = maxdelayTarget;
if (maxdelay < maxdelayTarget) {
maxdelay++;
dL[maxdelay] = (dL[0]+dL[maxdelay-1]) / 2.0;
dR[maxdelay] = (dR[0]+dR[maxdelay-1]) / 2.0;
}
if (maxdelay > maxdelayTarget) {
maxdelay--;
dL[maxdelay] = (dL[0]+dL[maxdelay]) / 2.0;
dR[maxdelay] = (dR[0]+dR[maxdelay]) / 2.0;
}
allpasstemp = one - 1;
if (allpasstemp < 0 || allpasstemp > maxdelay) allpasstemp = maxdelay;
inputSampleL -= dL[allpasstemp]*outallpass;
inputSampleR -= dR[allpasstemp]*outallpass;
dL[one] = inputSampleL;
dR[one] = inputSampleR;
inputSampleL *= outallpass;
inputSampleR *= outallpass;
one--; if (one < 0 || one > maxdelay) {one = maxdelay;}
inputSampleL += (dL[one]);
inputSampleR += (dR[one]);
bridgerectifier = fabs(inputSampleL);
bridgerectifier = 1.0-cos(bridgerectifier);
if (inputSampleL > 0) inputSampleL -= bridgerectifier;
else inputSampleL += bridgerectifier;
bridgerectifier = fabs(inputSampleR);
bridgerectifier = 1.0-cos(bridgerectifier);
if (inputSampleR > 0) inputSampleR -= bridgerectifier;
else inputSampleR += bridgerectifier;
inputSampleL *= 4.0;
inputSampleR *= 4.0;
if (wet < 1.0) {
inputSampleL = (drySampleL * dry)+(inputSampleL * wet);
inputSampleR = (drySampleR * dry)+(inputSampleR * wet);
}
//stereo 64 bit dither, made small and tidy.
int expon; frexp((double)inputSampleL, &expon);
long double dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62);
dither /= 536870912.0; //needs this to scale to 64 bit zone
inputSampleL += (dither-fpNShapeL); fpNShapeL = dither;
frexp((double)inputSampleR, &expon);
dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62);
dither /= 536870912.0; //needs this to scale to 64 bit zone
inputSampleR += (dither-fpNShapeR); fpNShapeR = dither;
//end 64 bit dither
*out1 = inputSampleL;
*out2 = inputSampleR;
*in1++;
*in2++;
*out1++;
*out2++;
}
}
