/* ========================================
* Loud - Loud.h
* Copyright (c) 2016 airwindows, All rights reserved
* ======================================== */
#ifndef __Loud_H
#include "Loud.h"
#endif
void Loud::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 boost = pow(A+1.0,5);
double output = B;
double wet = C;
double dry = 1.0-wet;
long double inputSampleL;
long double inputSampleR;
double drySampleL;
double drySampleR;
double clamp;
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;
//begin L
inputSampleL *= boost;
clamp = inputSampleL - lastSampleL;
if (clamp > 0)
{
inputSampleL = -(inputSampleL - 1.0);
inputSampleL *= 1.2566108;
if (inputSampleL < 0.0) inputSampleL = 0.0;
if (inputSampleL > 3.141527) inputSampleL = 3.141527;
inputSampleL = sin(inputSampleL) * overallscale;
if (clamp > inputSampleL) clamp = inputSampleL;
}
if (clamp < 0)
{
inputSampleL += 1.0;
inputSampleL *= 1.2566108;
if (inputSampleL < 0.0) inputSampleL = 0.0;
if (inputSampleL > 3.141527) inputSampleL = 3.141527;
inputSampleL = -sin(inputSampleL) * overallscale;
if (clamp < inputSampleL) clamp = inputSampleL;
}
inputSampleL = lastSampleL + clamp;
lastSampleL = inputSampleL;
//finished L
//begin R
inputSampleR *= boost;
clamp = inputSampleR - lastSampleR;
if (clamp > 0)
{
inputSampleR = -(inputSampleR - 1.0);
inputSampleR *= 1.2566108;
if (inputSampleR < 0.0) inputSampleR = 0.0;
if (inputSampleR > 3.141527) inputSampleR = 3.141527;
inputSampleR = sin(inputSampleR) * overallscale;
if (clamp > inputSampleR) clamp = inputSampleR;
}
if (clamp < 0)
{
inputSampleR += 1.0;
inputSampleR *= 1.2566108;
if (inputSampleR < 0.0) inputSampleR = 0.0;
if (inputSampleR > 3.141527) inputSampleR = 3.141527;
inputSampleR = -sin(inputSampleR) * overallscale;
if (clamp < inputSampleR) clamp = inputSampleR;
}
inputSampleR = lastSampleR + clamp;
lastSampleR = inputSampleR;
//finished R
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 Loud::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 boost = pow(A+1.0,5);
double output = B;
double wet = C;
double dry = 1.0-wet;
long double inputSampleL;
long double inputSampleR;
double drySampleL;
double drySampleR;
double clamp;
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;
//begin L
inputSampleL *= boost;
clamp = inputSampleL - lastSampleL;
if (clamp > 0)
{
inputSampleL = -(inputSampleL - 1.0);
inputSampleL *= 1.2566108;
if (inputSampleL < 0.0) inputSampleL = 0.0;
if (inputSampleL > 3.141527) inputSampleL = 3.141527;
inputSampleL = sin(inputSampleL) * overallscale;
if (clamp > inputSampleL) clamp = inputSampleL;
}
if (clamp < 0)
{
inputSampleL += 1.0;
inputSampleL *= 1.2566108;
if (inputSampleL < 0.0) inputSampleL = 0.0;
if (inputSampleL > 3.141527) inputSampleL = 3.141527;
inputSampleL = -sin(inputSampleL) * overallscale;
if (clamp < inputSampleL) clamp = inputSampleL;
}
inputSampleL = lastSampleL + clamp;
lastSampleL = inputSampleL;
//finished L
//begin R
inputSampleR *= boost;
clamp = inputSampleR - lastSampleR;
if (clamp > 0)
{
inputSampleR = -(inputSampleR - 1.0);
inputSampleR *= 1.2566108;
if (inputSampleR < 0.0) inputSampleR = 0.0;
if (inputSampleR > 3.141527) inputSampleR = 3.141527;
inputSampleR = sin(inputSampleR) * overallscale;
if (clamp > inputSampleR) clamp = inputSampleR;
}
if (clamp < 0)
{
inputSampleR += 1.0;
inputSampleR *= 1.2566108;
if (inputSampleR < 0.0) inputSampleR = 0.0;
if (inputSampleR > 3.141527) inputSampleR = 3.141527;
inputSampleR = -sin(inputSampleR) * overallscale;
if (clamp < inputSampleR) clamp = inputSampleR;
}
inputSampleR = lastSampleR + clamp;
lastSampleR = inputSampleR;
//finished R
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++;
}
}
