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/* ========================================
* HardVacuum - HardVacuum.h
* Copyright (c) 2016 airwindows, All rights reserved
* ======================================== */
#ifndef __HardVacuum_H
#include "HardVacuum.h"
#endif
void HardVacuum::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames)
{
float* in1 = inputs[0];
float* in2 = inputs[1];
float* out1 = outputs[0];
float* out2 = outputs[1];
double multistage = A*2.0;
if (multistage > 1) multistage *= multistage;
//WE MAKE LOUD NOISE! RAWWWK!
double countdown;
double warmth = B;
double invwarmth = 1.0-warmth;
warmth /= 1.57079633;
double aura = C*3.1415926;
double out = D;
double wet = E;
double dry = 1.0-wet;
double drive;
double positive;
double negative;
double bridgerectifierL;
double bridgerectifierR;
double skewL;
double skewR;
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;
skewL = (inputSampleL - lastSampleL);
skewR = (inputSampleR - lastSampleR);
lastSampleL = inputSampleL;
lastSampleR = inputSampleR;
//skew will be direction/angle
bridgerectifierL = fabs(skewL);
bridgerectifierR = fabs(skewR);
if (bridgerectifierL > 3.1415926) bridgerectifierL = 3.1415926;
if (bridgerectifierR > 3.1415926) bridgerectifierR = 3.1415926;
//for skew we want it to go to zero effect again, so we use full range of the sine
bridgerectifierL = sin(bridgerectifierL);
bridgerectifierR = sin(bridgerectifierR);
if (skewL > 0) skewL = bridgerectifierL*aura;
else skewL = -bridgerectifierL*aura;
if (skewR > 0) skewR = bridgerectifierR*aura;
else skewR = -bridgerectifierR*aura;
//skew is now sined and clamped and then re-amplified again
skewL *= inputSampleL;
skewR *= inputSampleR;
//cools off sparkliness and crossover distortion
skewL *= 1.557079633;
skewR *= 1.557079633;
//crank up the gain on this so we can make it sing
//We're doing all this here so skew isn't incremented by each stage
countdown = multistage;
//begin the torture
while (countdown > 0)
{
if (countdown > 1.0) drive = 1.557079633;
else drive = countdown * (1.0+(0.557079633*invwarmth));
//full crank stages followed by the proportional one
//whee. 1 at full warmth to 1.5570etc at no warmth
positive = drive - warmth;
negative = drive + warmth;
//set up things so we can do repeated iterations, assuming that
//wet is always going to be 0-1 as in the previous plug.
bridgerectifierL = fabs(inputSampleL);
bridgerectifierR = fabs(inputSampleR);
bridgerectifierL += skewL;
bridgerectifierR += skewR;
//apply it here so we don't overload
if (bridgerectifierL > 1.57079633) bridgerectifierL = 1.57079633;
if (bridgerectifierR > 1.57079633) bridgerectifierR = 1.57079633;
bridgerectifierL = sin(bridgerectifierL);
bridgerectifierR = sin(bridgerectifierR);
//the distortion section.
bridgerectifierL *= drive;
bridgerectifierR *= drive;
bridgerectifierL += skewL;
bridgerectifierR += skewR;
//again
if (bridgerectifierL > 1.57079633) bridgerectifierL = 1.57079633;
if (bridgerectifierR > 1.57079633) bridgerectifierR = 1.57079633;
bridgerectifierL = sin(bridgerectifierL);
bridgerectifierR = sin(bridgerectifierR);
if (inputSampleL > 0)
{
inputSampleL = (inputSampleL*(1-positive+skewL))+(bridgerectifierL*(positive+skewL));
}
else
{
inputSampleL = (inputSampleL*(1-negative+skewL))-(bridgerectifierL*(negative+skewL));
}
if (inputSampleR > 0)
{
inputSampleR = (inputSampleR*(1-positive+skewR))+(bridgerectifierR*(positive+skewR));
}
else
{
inputSampleR = (inputSampleR*(1-negative+skewR))-(bridgerectifierR*(negative+skewR));
}
//blend according to positive and negative controls
countdown -= 1.0;
//step down a notch and repeat.
}
if (out != 1.0) {
inputSampleL *= out;
inputSampleR *= out;
}
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 HardVacuum::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames)
{
double* in1 = inputs[0];
double* in2 = inputs[1];
double* out1 = outputs[0];
double* out2 = outputs[1];
double multistage = A*2.0;
if (multistage > 1) multistage *= multistage;
//WE MAKE LOUD NOISE! RAWWWK!
double countdown;
double warmth = B;
double invwarmth = 1.0-warmth;
warmth /= 1.57079633;
double aura = C*3.1415926;
double out = D;
double wet = E;
double dry = 1.0-wet;
double drive;
double positive;
double negative;
double bridgerectifierL;
double bridgerectifierR;
double skewL;
double skewR;
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;
skewL = (inputSampleL - lastSampleL);
skewR = (inputSampleR - lastSampleR);
lastSampleL = inputSampleL;
lastSampleR = inputSampleR;
//skew will be direction/angle
bridgerectifierL = fabs(skewL);
bridgerectifierR = fabs(skewR);
if (bridgerectifierL > 3.1415926) bridgerectifierL = 3.1415926;
if (bridgerectifierR > 3.1415926) bridgerectifierR = 3.1415926;
//for skew we want it to go to zero effect again, so we use full range of the sine
bridgerectifierL = sin(bridgerectifierL);
bridgerectifierR = sin(bridgerectifierR);
if (skewL > 0) skewL = bridgerectifierL*aura;
else skewL = -bridgerectifierL*aura;
if (skewR > 0) skewR = bridgerectifierR*aura;
else skewR = -bridgerectifierR*aura;
//skew is now sined and clamped and then re-amplified again
skewL *= inputSampleL;
skewR *= inputSampleR;
//cools off sparkliness and crossover distortion
skewL *= 1.557079633;
skewR *= 1.557079633;
//crank up the gain on this so we can make it sing
//We're doing all this here so skew isn't incremented by each stage
countdown = multistage;
//begin the torture
while (countdown > 0)
{
if (countdown > 1.0) drive = 1.557079633;
else drive = countdown * (1.0+(0.557079633*invwarmth));
//full crank stages followed by the proportional one
//whee. 1 at full warmth to 1.5570etc at no warmth
positive = drive - warmth;
negative = drive + warmth;
//set up things so we can do repeated iterations, assuming that
//wet is always going to be 0-1 as in the previous plug.
bridgerectifierL = fabs(inputSampleL);
bridgerectifierR = fabs(inputSampleR);
bridgerectifierL += skewL;
bridgerectifierR += skewR;
//apply it here so we don't overload
if (bridgerectifierL > 1.57079633) bridgerectifierL = 1.57079633;
if (bridgerectifierR > 1.57079633) bridgerectifierR = 1.57079633;
bridgerectifierL = sin(bridgerectifierL);
bridgerectifierR = sin(bridgerectifierR);
//the distortion section.
bridgerectifierL *= drive;
bridgerectifierR *= drive;
bridgerectifierL += skewL;
bridgerectifierR += skewR;
//again
if (bridgerectifierL > 1.57079633) bridgerectifierL = 1.57079633;
if (bridgerectifierR > 1.57079633) bridgerectifierR = 1.57079633;
bridgerectifierL = sin(bridgerectifierL);
bridgerectifierR = sin(bridgerectifierR);
if (inputSampleL > 0)
{
inputSampleL = (inputSampleL*(1-positive+skewL))+(bridgerectifierL*(positive+skewL));
}
else
{
inputSampleL = (inputSampleL*(1-negative+skewL))-(bridgerectifierL*(negative+skewL));
}
if (inputSampleR > 0)
{
inputSampleR = (inputSampleR*(1-positive+skewR))+(bridgerectifierR*(positive+skewR));
}
else
{
inputSampleR = (inputSampleR*(1-negative+skewR))-(bridgerectifierR*(negative+skewR));
}
//blend according to positive and negative controls
countdown -= 1.0;
//step down a notch and repeat.
}
if (out != 1.0) {
inputSampleL *= out;
inputSampleR *= out;
}
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++;
}
}
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