mirror of
https://github.com/airwindows/airwindows.git
synced 2026-05-16 06:05:55 -06:00
322 lines
No EOL
11 KiB
C++
Executable file
322 lines
No EOL
11 KiB
C++
Executable file
/* ========================================
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* Pyewacket - Pyewacket.h
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* Copyright (c) 2016 airwindows, All rights reserved
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* ======================================== */
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#ifndef __Pyewacket_H
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#include "Pyewacket.h"
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#endif
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void Pyewacket::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames)
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{
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float* in1 = inputs[0];
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float* in2 = inputs[1];
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float* out1 = outputs[0];
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float* out2 = outputs[1];
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double overallscale = 1.0;
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overallscale /= 44100.0;
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overallscale *= getSampleRate();
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float fpTemp;
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long double fpOld = 0.618033988749894848204586; //golden ratio!
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long double fpNew = 1.0 - fpOld;
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long double inputSampleL;
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long double inputSampleR;
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long double drySampleL;
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long double drySampleR;
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double bridgerectifier;
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double temprectifier;
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double inputSense;
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double inputGain = pow(10.0,((A*24.0)-12.0)/20.0);
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double attack = ((B+0.5)*0.006)/overallscale;
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double decay = ((B+0.01)*0.0004)/overallscale;
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double outputGain = pow(10.0,((C*24.0)-12.0)/20.0);
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double wet;
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double maxblur;
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double blurdry;
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double out;
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double dry;
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while (--sampleFrames >= 0)
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{
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inputSampleL = *in1;
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inputSampleR = *in2;
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if (inputSampleL<1.2e-38 && -inputSampleL<1.2e-38) {
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static int noisesource = 0;
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//this declares a variable before anything else is compiled. It won't keep assigning
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//it to 0 for every sample, it's as if the declaration doesn't exist in this context,
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//but it lets me add this denormalization fix in a single place rather than updating
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//it in three different locations. The variable isn't thread-safe but this is only
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//a random seed and we can share it with whatever.
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noisesource = noisesource % 1700021; noisesource++;
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int residue = noisesource * noisesource;
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residue = residue % 170003; residue *= residue;
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residue = residue % 17011; residue *= residue;
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residue = residue % 1709; residue *= residue;
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residue = residue % 173; residue *= residue;
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residue = residue % 17;
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double applyresidue = residue;
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applyresidue *= 0.00000001;
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applyresidue *= 0.00000001;
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inputSampleL = applyresidue;
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}
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if (inputSampleR<1.2e-38 && -inputSampleR<1.2e-38) {
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static int noisesource = 0;
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noisesource = noisesource % 1700021; noisesource++;
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int residue = noisesource * noisesource;
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residue = residue % 170003; residue *= residue;
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residue = residue % 17011; residue *= residue;
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residue = residue % 1709; residue *= residue;
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residue = residue % 173; residue *= residue;
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residue = residue % 17;
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double applyresidue = residue;
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applyresidue *= 0.00000001;
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applyresidue *= 0.00000001;
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inputSampleR = applyresidue;
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//this denormalization routine produces a white noise at -300 dB which the noise
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//shaping will interact with to produce a bipolar output, but the noise is actually
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//all positive. That should stop any variables from going denormal, and the routine
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//only kicks in if digital black is input. As a final touch, if you save to 24-bit
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//the silence will return to being digital black again.
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}
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if (inputGain != 1.0) {
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inputSampleL *= inputGain;
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inputSampleR *= inputGain;
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}
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drySampleL = inputSampleL;
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drySampleR = inputSampleR;
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inputSense = fabs(inputSampleL);
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if (fabs(inputSampleR) > inputSense)
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inputSense = fabs(inputSampleR);
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//we will take the greater of either channel and just use that, then apply the result
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//to both stereo channels.
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if (chase < inputSense) chase += attack;
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if (chase > 1.0) chase = 1.0;
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if (chase > inputSense) chase -= decay;
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if (chase < 0.0) chase = 0.0;
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//chase will be between 0 and ? (if input is super hot)
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out = wet = chase;
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if (wet > 1.0) wet = 1.0;
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maxblur = wet * fpNew;
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blurdry = 1.0 - maxblur;
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//scaled back so that blur remains balance of both
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if (out > fpOld) out = fpOld - (out - fpOld);
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if (out < 0.0) out = 0.0;
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dry = 1.0 - wet;
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if (inputSampleL > 1.57079633) inputSampleL = 1.57079633;
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if (inputSampleL < -1.57079633) inputSampleL = -1.57079633;
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if (inputSampleR > 1.57079633) inputSampleR = 1.57079633;
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if (inputSampleR < -1.57079633) inputSampleR = -1.57079633;
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bridgerectifier = fabs(inputSampleL);
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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temprectifier = 1-cos(bridgerectifier);
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bridgerectifier = ((lastrectifierL*maxblur) + (temprectifier*blurdry));
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lastrectifierL = temprectifier;
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//starved version is also blurred by one sample
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if (inputSampleL > 0) inputSampleL = (inputSampleL*dry)+(bridgerectifier*out);
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else inputSampleL = (inputSampleL*dry)-(bridgerectifier*out);
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bridgerectifier = fabs(inputSampleR);
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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temprectifier = 1-cos(bridgerectifier);
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bridgerectifier = ((lastrectifierR*maxblur) + (temprectifier*blurdry));
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lastrectifierR = temprectifier;
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//starved version is also blurred by one sample
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if (inputSampleR > 0) inputSampleR = (inputSampleR*dry)+(bridgerectifier*out);
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else inputSampleR = (inputSampleR*dry)-(bridgerectifier*out);
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if (outputGain != 1.0) {
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inputSampleL *= outputGain;
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inputSampleR *= outputGain;
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}
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//noise shaping to 32-bit floating point
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if (fpFlip) {
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fpTemp = inputSampleL;
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fpNShapeLA = (fpNShapeLA*fpOld)+((inputSampleL-fpTemp)*fpNew);
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inputSampleL += fpNShapeLA;
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fpTemp = inputSampleR;
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fpNShapeRA = (fpNShapeRA*fpOld)+((inputSampleR-fpTemp)*fpNew);
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inputSampleR += fpNShapeRA;
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}
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else {
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fpTemp = inputSampleL;
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fpNShapeLB = (fpNShapeLB*fpOld)+((inputSampleL-fpTemp)*fpNew);
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inputSampleL += fpNShapeLB;
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fpTemp = inputSampleR;
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fpNShapeRB = (fpNShapeRB*fpOld)+((inputSampleR-fpTemp)*fpNew);
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inputSampleR += fpNShapeRB;
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}
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fpFlip = !fpFlip;
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//end noise shaping on 32 bit output
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*out1 = inputSampleL;
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*out2 = inputSampleR;
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*in1++;
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*in2++;
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*out1++;
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*out2++;
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}
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}
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void Pyewacket::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames)
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{
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double* in1 = inputs[0];
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double* in2 = inputs[1];
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double* out1 = outputs[0];
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double* out2 = outputs[1];
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double overallscale = 1.0;
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overallscale /= 44100.0;
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overallscale *= getSampleRate();
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double fpTemp; //this is different from singlereplacing
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long double fpOld = 0.618033988749894848204586; //golden ratio!
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long double fpNew = 1.0 - fpOld;
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long double inputSampleL;
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long double inputSampleR;
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long double drySampleL;
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long double drySampleR;
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double bridgerectifier;
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double temprectifier;
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double inputSense;
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double inputGain = pow(10.0,((A*24.0)-12.0)/20.0);
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double attack = ((B+0.5)*0.006)/overallscale;
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double decay = ((B+0.01)*0.0004)/overallscale;
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double outputGain = pow(10.0,((C*24.0)-12.0)/20.0);
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double wet;
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double maxblur;
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double blurdry;
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double out;
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double dry;
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while (--sampleFrames >= 0)
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{
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inputSampleL = *in1;
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inputSampleR = *in2;
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if (inputSampleL<1.2e-38 && -inputSampleL<1.2e-38) {
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static int noisesource = 0;
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//this declares a variable before anything else is compiled. It won't keep assigning
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//it to 0 for every sample, it's as if the declaration doesn't exist in this context,
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//but it lets me add this denormalization fix in a single place rather than updating
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//it in three different locations. The variable isn't thread-safe but this is only
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//a random seed and we can share it with whatever.
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noisesource = noisesource % 1700021; noisesource++;
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int residue = noisesource * noisesource;
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residue = residue % 170003; residue *= residue;
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residue = residue % 17011; residue *= residue;
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residue = residue % 1709; residue *= residue;
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residue = residue % 173; residue *= residue;
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residue = residue % 17;
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double applyresidue = residue;
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applyresidue *= 0.00000001;
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applyresidue *= 0.00000001;
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inputSampleL = applyresidue;
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}
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if (inputSampleR<1.2e-38 && -inputSampleR<1.2e-38) {
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static int noisesource = 0;
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noisesource = noisesource % 1700021; noisesource++;
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int residue = noisesource * noisesource;
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residue = residue % 170003; residue *= residue;
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residue = residue % 17011; residue *= residue;
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residue = residue % 1709; residue *= residue;
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residue = residue % 173; residue *= residue;
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residue = residue % 17;
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double applyresidue = residue;
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applyresidue *= 0.00000001;
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applyresidue *= 0.00000001;
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inputSampleR = applyresidue;
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//this denormalization routine produces a white noise at -300 dB which the noise
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//shaping will interact with to produce a bipolar output, but the noise is actually
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//all positive. That should stop any variables from going denormal, and the routine
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//only kicks in if digital black is input. As a final touch, if you save to 24-bit
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//the silence will return to being digital black again.
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}
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if (inputGain != 1.0) {
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inputSampleL *= inputGain;
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inputSampleR *= inputGain;
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}
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drySampleL = inputSampleL;
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drySampleR = inputSampleR;
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inputSense = fabs(inputSampleL);
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if (fabs(inputSampleR) > inputSense)
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inputSense = fabs(inputSampleR);
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//we will take the greater of either channel and just use that, then apply the result
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//to both stereo channels.
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if (chase < inputSense) chase += attack;
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if (chase > 1.0) chase = 1.0;
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if (chase > inputSense) chase -= decay;
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if (chase < 0.0) chase = 0.0;
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//chase will be between 0 and ? (if input is super hot)
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out = wet = chase;
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if (wet > 1.0) wet = 1.0;
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maxblur = wet * fpNew;
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blurdry = 1.0 - maxblur;
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//scaled back so that blur remains balance of both
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if (out > fpOld) out = fpOld - (out - fpOld);
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if (out < 0.0) out = 0.0;
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dry = 1.0 - wet;
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if (inputSampleL > 1.57079633) inputSampleL = 1.57079633;
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if (inputSampleL < -1.57079633) inputSampleL = -1.57079633;
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if (inputSampleR > 1.57079633) inputSampleR = 1.57079633;
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if (inputSampleR < -1.57079633) inputSampleR = -1.57079633;
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bridgerectifier = fabs(inputSampleL);
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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temprectifier = 1-cos(bridgerectifier);
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bridgerectifier = ((lastrectifierL*maxblur) + (temprectifier*blurdry));
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lastrectifierL = temprectifier;
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//starved version is also blurred by one sample
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if (inputSampleL > 0) inputSampleL = (inputSampleL*dry)+(bridgerectifier*out);
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else inputSampleL = (inputSampleL*dry)-(bridgerectifier*out);
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bridgerectifier = fabs(inputSampleR);
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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temprectifier = 1-cos(bridgerectifier);
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bridgerectifier = ((lastrectifierR*maxblur) + (temprectifier*blurdry));
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lastrectifierR = temprectifier;
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//starved version is also blurred by one sample
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if (inputSampleR > 0) inputSampleR = (inputSampleR*dry)+(bridgerectifier*out);
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else inputSampleR = (inputSampleR*dry)-(bridgerectifier*out);
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if (outputGain != 1.0) {
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inputSampleL *= outputGain;
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inputSampleR *= outputGain;
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}
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//noise shaping to 64-bit floating point
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if (fpFlip) {
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fpTemp = inputSampleL;
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fpNShapeLA = (fpNShapeLA*fpOld)+((inputSampleL-fpTemp)*fpNew);
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inputSampleL += fpNShapeLA;
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fpTemp = inputSampleR;
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fpNShapeRA = (fpNShapeRA*fpOld)+((inputSampleR-fpTemp)*fpNew);
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inputSampleR += fpNShapeRA;
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}
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else {
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fpTemp = inputSampleL;
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fpNShapeLB = (fpNShapeLB*fpOld)+((inputSampleL-fpTemp)*fpNew);
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inputSampleL += fpNShapeLB;
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fpTemp = inputSampleR;
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fpNShapeRB = (fpNShapeRB*fpOld)+((inputSampleR-fpTemp)*fpNew);
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inputSampleR += fpNShapeRB;
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}
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fpFlip = !fpFlip;
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//end noise shaping on 64 bit output
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*out1 = inputSampleL;
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*out2 = inputSampleR;
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*in1++;
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*in2++;
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*out1++;
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*out2++;
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}
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} |