/* ========================================
* Golem - Golem.h
* Copyright (c) 2016 airwindows, All rights reserved
* ======================================== */
#ifndef __Golem_H
#include "Golem.h"
#endif
void Golem::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames)
{
float* in1 = inputs[0];
float* in2 = inputs[1];
float* out1 = outputs[0];
float* out2 = outputs[1];
int phase = (int)((C * 5.999)+1);
double balance = ((A*2.0)-1.0) / 2.0;
double gainL = 0.5 - balance;
double gainR = 0.5 + balance;
double range = 30.0;
if (phase == 3) range = 700.0;
if (phase == 4) range = 700.0;
double offset = pow((B*2.0)-1.0,5) * range;
if (phase > 4) offset = 0.0;
if (phase > 5)
{
gainL = 0.5;
gainR = 0.5;
}
int near = (int)floor(fabs(offset));
double farLevel = fabs(offset) - near;
int far = near + 1;
double nearLevel = 1.0 - farLevel;
long double inputSampleL;
long double inputSampleR;
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.
}
//assign working variables
if (phase == 2) inputSampleL = -inputSampleL;
if (phase == 4) inputSampleL = -inputSampleL;
inputSampleL *= gainL;
inputSampleR *= gainR;
if (count < 1 || count > 2048) {count = 2048;}
if (offset > 0)
{
p[count+2048] = p[count] = inputSampleL;
inputSampleL = p[count+near]*nearLevel;
inputSampleL += p[count+far]*farLevel;
//consider adding third sample just to bring out superhighs subtly, like old interpolation hacks
//or third and fifth samples, ditto
}
if (offset < 0)
{
p[count+2048] = p[count] = inputSampleR;
inputSampleR = p[count+near]*nearLevel;
inputSampleR += p[count+far]*farLevel;
}
count -= 1;
inputSampleL = inputSampleL + inputSampleR;
inputSampleR = inputSampleL;
//the output is totally mono
//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 Golem::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames)
{
double* in1 = inputs[0];
double* in2 = inputs[1];
double* out1 = outputs[0];
double* out2 = outputs[1];
int phase = (int)((C * 5.999)+1);
double balance = ((A*2.0)-1.0) / 2.0;
double gainL = 0.5 - balance;
double gainR = 0.5 + balance;
double range = 30.0;
if (phase == 3) range = 700.0;
if (phase == 4) range = 700.0;
double offset = pow((B*2.0)-1.0,5) * range;
if (phase > 4) offset = 0.0;
if (phase > 5)
{
gainL = 0.5;
gainR = 0.5;
}
int near = (int)floor(fabs(offset));
double farLevel = fabs(offset) - near;
int far = near + 1;
double nearLevel = 1.0 - farLevel;
long double inputSampleL;
long double inputSampleR;
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.
}
//assign working variables
if (phase == 2) inputSampleL = -inputSampleL;
if (phase == 4) inputSampleL = -inputSampleL;
inputSampleL *= gainL;
inputSampleR *= gainR;
if (count < 1 || count > 2048) {count = 2048;}
if (offset > 0)
{
p[count+2048] = p[count] = inputSampleL;
inputSampleL = p[count+near]*nearLevel;
inputSampleL += p[count+far]*farLevel;
//consider adding third sample just to bring out superhighs subtly, like old interpolation hacks
//or third and fifth samples, ditto
}
if (offset < 0)
{
p[count+2048] = p[count] = inputSampleR;
inputSampleR = p[count+near]*nearLevel;
inputSampleR += p[count+far]*farLevel;
}
count -= 1;
inputSampleL = inputSampleL + inputSampleR;
inputSampleR = inputSampleL;
//the output is totally mono
//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++;
}
}
