/* ========================================
* Acceleration - Acceleration.h
* Copyright (c) 2016 airwindows, All rights reserved
* ======================================== */
#ifndef __Acceleration_H
#include "Acceleration.h"
#endif
void Acceleration::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 intensity = pow(A,3)*(32/overallscale);
double wet = B;
double dry = 1.0 - wet;
double senseL;
double smoothL;
double senseR;
double smoothR;
double accumulatorSample;
double drySampleL;
double drySampleR;
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.
}
drySampleL = inputSampleL;
drySampleR = inputSampleR;
s3L = s2L;
s2L = s1L;
s1L = inputSampleL;
smoothL = (s3L + s2L + s1L) / 3.0;
m1L = (s1L-s2L)*((s1L-s2L)/1.3);
m2L = (s2L-s3L)*((s1L-s2L)/1.3);
senseL = fabs(m1L-m2L);
senseL = (intensity*intensity*senseL);
o3L = o2L;
o2L = o1L;
o1L = senseL;
if (o2L > senseL) senseL = o2L;
if (o3L > senseL) senseL = o3L;
//sense on the most intense
s3R = s2R;
s2R = s1R;
s1R = inputSampleR;
smoothR = (s3R + s2R + s1R) / 3.0;
m1R = (s1R-s2R)*((s1R-s2R)/1.3);
m2R = (s2R-s3R)*((s1R-s2R)/1.3);
senseR = fabs(m1R-m2R);
senseR = (intensity*intensity*senseR);
o3R = o2R;
o2R = o1R;
o1R = senseR;
if (o2R > senseR) senseR = o2R;
if (o3R > senseR) senseR = o3R;
//sense on the most intense
if (senseL > 1.0) senseL = 1.0;
if (senseR > 1.0) senseR = 1.0;
inputSampleL *= (1.0-senseL);
inputSampleR *= (1.0-senseR);
inputSampleL += (smoothL*senseL);
inputSampleR += (smoothR*senseR);
senseL /= 2.0;
senseR /= 2.0;
accumulatorSample = (ataLastOutL*senseL)+(inputSampleL*(1.0-senseL));
ataLastOutL = inputSampleL;
inputSampleL = accumulatorSample;
accumulatorSample = (ataLastOutR*senseR)+(inputSampleR*(1.0-senseR));
ataLastOutR = inputSampleR;
inputSampleR = accumulatorSample;
if (wet !=1.0) {
inputSampleL = (inputSampleL * wet) + (drySampleL * dry);
inputSampleR = (inputSampleR * wet) + (drySampleR * dry);
}
//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 Acceleration::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 intensity = pow(A,3)*(32/overallscale);
double wet = B;
double dry = 1.0 - wet;
double senseL;
double smoothL;
double senseR;
double smoothR;
double accumulatorSample;
double drySampleL;
double drySampleR;
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.
}
drySampleL = inputSampleL;
drySampleR = inputSampleR;
s3L = s2L;
s2L = s1L;
s1L = inputSampleL;
smoothL = (s3L + s2L + s1L) / 3.0;
m1L = (s1L-s2L)*((s1L-s2L)/1.3);
m2L = (s2L-s3L)*((s1L-s2L)/1.3);
senseL = fabs(m1L-m2L);
senseL = (intensity*intensity*senseL);
o3L = o2L;
o2L = o1L;
o1L = senseL;
if (o2L > senseL) senseL = o2L;
if (o3L > senseL) senseL = o3L;
//sense on the most intense
s3R = s2R;
s2R = s1R;
s1R = inputSampleR;
smoothR = (s3R + s2R + s1R) / 3.0;
m1R = (s1R-s2R)*((s1R-s2R)/1.3);
m2R = (s2R-s3R)*((s1R-s2R)/1.3);
senseR = fabs(m1R-m2R);
senseR = (intensity*intensity*senseR);
o3R = o2R;
o2R = o1R;
o1R = senseR;
if (o2R > senseR) senseR = o2R;
if (o3R > senseR) senseR = o3R;
//sense on the most intense
if (senseL > 1.0) senseL = 1.0;
if (senseR > 1.0) senseR = 1.0;
inputSampleL *= (1.0-senseL);
inputSampleR *= (1.0-senseR);
inputSampleL += (smoothL*senseL);
inputSampleR += (smoothR*senseR);
senseL /= 2.0;
senseR /= 2.0;
accumulatorSample = (ataLastOutL*senseL)+(inputSampleL*(1.0-senseL));
ataLastOutL = inputSampleL;
inputSampleL = accumulatorSample;
accumulatorSample = (ataLastOutR*senseR)+(inputSampleR*(1.0-senseR));
ataLastOutR = inputSampleR;
inputSampleR = accumulatorSample;
if (wet !=1.0) {
inputSampleL = (inputSampleL * wet) + (drySampleL * dry);
inputSampleR = (inputSampleR * wet) + (drySampleR * dry);
}
//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++;
}
}