/* ========================================
* ClipOnly - ClipOnly.h
* Copyright (c) 2016 airwindows, All rights reserved
* ======================================== */
#ifndef __ClipOnly_H
#include "ClipOnly.h"
#endif
void ClipOnly::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames)
{
float* in1 = inputs[0];
float* in2 = inputs[1];
float* out1 = outputs[0];
float* out2 = outputs[1];
double hardness = 0.7390851332151606; // x == cos(x)
double softness = 1.0 - hardness;
double refclip = 0.9549925859; // -0.2dB
float inputSampleL;
float 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.
}
if (inputSampleL > 4.0) inputSampleL = 4.0;
if (inputSampleL < -4.0) inputSampleL = -4.0;
if (inputSampleR > 4.0) inputSampleR = 4.0;
if (inputSampleR < -4.0) inputSampleR = -4.0;
if (wasPosClipL == true) { //current will be over
if (inputSampleL < lastSampleL) { //next one will NOT be over
lastSampleL = ((refclip*hardness) + (inputSampleL * softness));
}
else { //still clipping, still chasing the target
lastSampleL = ((lastSampleL*hardness) + (refclip * softness));
}
}
wasPosClipL = false;
if (inputSampleL > refclip) { //next will be over the true clip level. otherwise we directly use it
wasPosClipL = true; //set the clip flag
inputSampleL = ((refclip*hardness) + (lastSampleL * softness));
}
if (wasNegClipL == true) { //current will be -over
if (inputSampleL > lastSampleL) { //next one will NOT be -over
lastSampleL = ((-refclip*hardness) + (inputSampleL * softness));
}
else { //still clipping, still chasing the target
lastSampleL = ((lastSampleL*hardness) + (-refclip * softness));
}
}
wasNegClipL = false;
if (inputSampleL < -refclip) { //next will be -refclip. otherwise we directly use it
wasNegClipL = true; //set the clip flag
inputSampleL = ((-refclip*hardness) + (lastSampleL * softness));
}
if (wasPosClipR == true) { //current will be over
if (inputSampleR < lastSampleR) { //next one will NOT be over
lastSampleR = ((refclip*hardness) + (inputSampleR * softness));
}
else { //still clipping, still chasing the target
lastSampleR = ((lastSampleR*hardness) + (refclip * softness));
}
}
wasPosClipR = false;
if (inputSampleR > refclip) { //next will be over the true clip level. otherwise we directly use it
wasPosClipR = true; //set the clip flag
inputSampleR = ((refclip*hardness) + (lastSampleR * softness));
}
if (wasNegClipR == true) { //current will be -over
if (inputSampleR > lastSampleR) { //next one will NOT be -over
lastSampleR = ((-refclip*hardness) + (inputSampleR * softness));
}
else { //still clipping, still chasing the target
lastSampleR = ((lastSampleR*hardness) + (-refclip * softness));
}
}
wasNegClipR = false;
if (inputSampleR < -refclip) { //next will be -refclip. otherwise we directly use it
wasNegClipR = true; //set the clip flag
inputSampleR = ((-refclip*hardness) + (lastSampleR * softness));
}
*out1 = lastSampleL;
*out2 = lastSampleR;
lastSampleL = inputSampleL;
lastSampleR = inputSampleR;
*in1++;
*in2++;
*out1++;
*out2++;
}
}
void ClipOnly::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames)
{
double* in1 = inputs[0];
double* in2 = inputs[1];
double* out1 = outputs[0];
double* out2 = outputs[1];
double hardness = 0.7390851332151606; // x == cos(x)
double softness = 1.0 - hardness;
double refclip = 0.9549925859; // -0.2dB
double inputSampleL;
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.
}
if (inputSampleL > 4.0) inputSampleL = 4.0;
if (inputSampleL < -4.0) inputSampleL = -4.0;
if (inputSampleR > 4.0) inputSampleR = 4.0;
if (inputSampleR < -4.0) inputSampleR = -4.0;
if (wasPosClipL == true) { //current will be over
if (inputSampleL < lastSampleL) { //next one will NOT be over
lastSampleL = ((refclip*hardness) + (inputSampleL * softness));
}
else { //still clipping, still chasing the target
lastSampleL = ((lastSampleL*hardness) + (refclip * softness));
}
}
wasPosClipL = false;
if (inputSampleL > refclip) { //next will be over the true clip level. otherwise we directly use it
wasPosClipL = true; //set the clip flag
inputSampleL = ((refclip*hardness) + (lastSampleL * softness));
}
if (wasNegClipL == true) { //current will be -over
if (inputSampleL > lastSampleL) { //next one will NOT be -over
lastSampleL = ((-refclip*hardness) + (inputSampleL * softness));
}
else { //still clipping, still chasing the target
lastSampleL = ((lastSampleL*hardness) + (-refclip * softness));
}
}
wasNegClipL = false;
if (inputSampleL < -refclip) { //next will be -refclip. otherwise we directly use it
wasNegClipL = true; //set the clip flag
inputSampleL = ((-refclip*hardness) + (lastSampleL * softness));
}
if (wasPosClipR == true) { //current will be over
if (inputSampleR < lastSampleR) { //next one will NOT be over
lastSampleR = ((refclip*hardness) + (inputSampleR * softness));
}
else { //still clipping, still chasing the target
lastSampleR = ((lastSampleR*hardness) + (refclip * softness));
}
}
wasPosClipR = false;
if (inputSampleR > refclip) { //next will be over the true clip level. otherwise we directly use it
wasPosClipR = true; //set the clip flag
inputSampleR = ((refclip*hardness) + (lastSampleR * softness));
}
if (wasNegClipR == true) { //current will be -over
if (inputSampleR > lastSampleR) { //next one will NOT be -over
lastSampleR = ((-refclip*hardness) + (inputSampleR * softness));
}
else { //still clipping, still chasing the target
lastSampleR = ((lastSampleR*hardness) + (-refclip * softness));
}
}
wasNegClipR = false;
if (inputSampleR < -refclip) { //next will be -refclip. otherwise we directly use it
wasNegClipR = true; //set the clip flag
inputSampleR = ((-refclip*hardness) + (lastSampleR * softness));
}
*out1 = lastSampleL;
*out2 = lastSampleR;
lastSampleL = inputSampleL;
lastSampleR = inputSampleR;
*in1++;
*in2++;
*out1++;
*out2++;
}
}
