/* ========================================
* HighImpact - HighImpact.h
* Copyright (c) 2016 airwindows, All rights reserved
* ======================================== */
#ifndef __HighImpact_H
#include "HighImpact.h"
#endif
void HighImpact::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames)
{
float* in1 = inputs[0];
float* in2 = inputs[1];
float* out1 = outputs[0];
float* out2 = outputs[1];
long double inputSampleL;
long double inputSampleR;
long double drySampleL;
long double drySampleR;
double density = A*5.0;
double out = density / 5.0;
double sustain = 1.0 - (1.0/(1.0 + (density*A)));
double bridgerectifier;
double count;
double output = B;
double wet = C;
double dry = 1.0-wet;
double clamp;
double threshold = (1.25 - out);
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;
count = density;
while (count > 1.0)
{
bridgerectifier = fabs(inputSampleL)*1.57079633;
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
//max value for sine function
bridgerectifier = sin(bridgerectifier);
if (inputSampleL > 0.0) inputSampleL = bridgerectifier;
else inputSampleL = -bridgerectifier;
bridgerectifier = fabs(inputSampleR)*1.57079633;
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
//max value for sine function
bridgerectifier = sin(bridgerectifier);
if (inputSampleR > 0.0) inputSampleR = bridgerectifier;
else inputSampleR = -bridgerectifier;
count = count - 1.0;
}
//we have now accounted for any really high density settings.
while (out > 1.0) out = out - 1.0;
bridgerectifier = fabs(inputSampleL)*1.57079633;
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
//max value for sine function
if (density > 0) bridgerectifier = sin(bridgerectifier);
else bridgerectifier = 1-cos(bridgerectifier);
//produce either boosted or starved version
if (inputSampleL > 0) inputSampleL = (inputSampleL*(1-out))+(bridgerectifier*out);
else inputSampleL = (inputSampleL*(1-out))-(bridgerectifier*out);
//blend according to density control
bridgerectifier = fabs(inputSampleR)*1.57079633;
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
//max value for sine function
if (density > 0) bridgerectifier = sin(bridgerectifier);
else bridgerectifier = 1-cos(bridgerectifier);
//produce either boosted or starved version
if (inputSampleR > 0) inputSampleR = (inputSampleR*(1-out))+(bridgerectifier*out);
else inputSampleR = (inputSampleR*(1-out))-(bridgerectifier*out);
//blend according to density control
//done first density. Next, sustain-reducer
bridgerectifier = fabs(inputSampleL)*1.57079633;
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
bridgerectifier = 1-cos(bridgerectifier);
if (inputSampleL > 0) inputSampleL = (inputSampleL*(1-sustain))+(bridgerectifier*sustain);
else inputSampleL = (inputSampleL*(1-sustain))-(bridgerectifier*sustain);
//done sustain removing, converted to Slew inputs
//done first density. Next, sustain-reducer
bridgerectifier = fabs(inputSampleR)*1.57079633;
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
bridgerectifier = 1-cos(bridgerectifier);
if (inputSampleR > 0) inputSampleR = (inputSampleR*(1-sustain))+(bridgerectifier*sustain);
else inputSampleR = (inputSampleR*(1-sustain))-(bridgerectifier*sustain);
//done sustain removing, converted to Slew inputs
clamp = inputSampleL - lastSampleL;
if (clamp > threshold)
inputSampleL = lastSampleL + threshold;
if (-clamp > threshold)
inputSampleL = lastSampleL - threshold;
lastSampleL = inputSampleL;
clamp = inputSampleR - lastSampleR;
if (clamp > threshold)
inputSampleR = lastSampleR + threshold;
if (-clamp > threshold)
inputSampleR = lastSampleR - threshold;
lastSampleR = inputSampleR;
if (output < 1.0) {inputSampleL *= output; inputSampleR *= output;}
if (wet < 1.0) {
inputSampleL = (drySampleL * dry)+(inputSampleL*wet);
inputSampleR = (drySampleR * dry)+(inputSampleR*wet);
}
//nice little output stage template: if we have another scale of floating point
//number, we really don't want to meaninglessly multiply that by 1.0.
//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 HighImpact::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();
long double inputSampleL;
long double inputSampleR;
long double drySampleL;
long double drySampleR;
double density = A*5.0;
double out = density / 5.0;
double sustain = 1.0 - (1.0/(1.0 + (density*A)));
double bridgerectifier;
double count;
double output = B;
double wet = C;
double dry = 1.0-wet;
double clamp;
double threshold = (1.25 - out);
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;
count = density;
while (count > 1.0)
{
bridgerectifier = fabs(inputSampleL)*1.57079633;
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
//max value for sine function
bridgerectifier = sin(bridgerectifier);
if (inputSampleL > 0.0) inputSampleL = bridgerectifier;
else inputSampleL = -bridgerectifier;
bridgerectifier = fabs(inputSampleR)*1.57079633;
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
//max value for sine function
bridgerectifier = sin(bridgerectifier);
if (inputSampleR > 0.0) inputSampleR = bridgerectifier;
else inputSampleR = -bridgerectifier;
count = count - 1.0;
}
//we have now accounted for any really high density settings.
while (out > 1.0) out = out - 1.0;
bridgerectifier = fabs(inputSampleL)*1.57079633;
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
//max value for sine function
if (density > 0) bridgerectifier = sin(bridgerectifier);
else bridgerectifier = 1-cos(bridgerectifier);
//produce either boosted or starved version
if (inputSampleL > 0) inputSampleL = (inputSampleL*(1-out))+(bridgerectifier*out);
else inputSampleL = (inputSampleL*(1-out))-(bridgerectifier*out);
//blend according to density control
bridgerectifier = fabs(inputSampleR)*1.57079633;
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
//max value for sine function
if (density > 0) bridgerectifier = sin(bridgerectifier);
else bridgerectifier = 1-cos(bridgerectifier);
//produce either boosted or starved version
if (inputSampleR > 0) inputSampleR = (inputSampleR*(1-out))+(bridgerectifier*out);
else inputSampleR = (inputSampleR*(1-out))-(bridgerectifier*out);
//blend according to density control
//done first density. Next, sustain-reducer
bridgerectifier = fabs(inputSampleL)*1.57079633;
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
bridgerectifier = 1-cos(bridgerectifier);
if (inputSampleL > 0) inputSampleL = (inputSampleL*(1-sustain))+(bridgerectifier*sustain);
else inputSampleL = (inputSampleL*(1-sustain))-(bridgerectifier*sustain);
//done sustain removing, converted to Slew inputs
//done first density. Next, sustain-reducer
bridgerectifier = fabs(inputSampleR)*1.57079633;
if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
bridgerectifier = 1-cos(bridgerectifier);
if (inputSampleR > 0) inputSampleR = (inputSampleR*(1-sustain))+(bridgerectifier*sustain);
else inputSampleR = (inputSampleR*(1-sustain))-(bridgerectifier*sustain);
//done sustain removing, converted to Slew inputs
clamp = inputSampleL - lastSampleL;
if (clamp > threshold)
inputSampleL = lastSampleL + threshold;
if (-clamp > threshold)
inputSampleL = lastSampleL - threshold;
lastSampleL = inputSampleL;
clamp = inputSampleR - lastSampleR;
if (clamp > threshold)
inputSampleR = lastSampleR + threshold;
if (-clamp > threshold)
inputSampleR = lastSampleR - threshold;
lastSampleR = inputSampleR;
if (output < 1.0) {inputSampleL *= output; inputSampleR *= output;}
if (wet < 1.0) {
inputSampleL = (drySampleL * dry)+(inputSampleL*wet);
inputSampleR = (drySampleR * dry)+(inputSampleR*wet);
}
//nice little output stage template: if we have another scale of floating point
//number, we really don't want to meaninglessly multiply that by 1.0.
//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++;
}
}
