mirror of
https://github.com/airwindows/airwindows.git
synced 2026-05-21 14:56:19 -06:00
324 lines
No EOL
9.8 KiB
C++
324 lines
No EOL
9.8 KiB
C++
/* ========================================
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* Acceleration - Acceleration.h
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* Copyright (c) 2016 airwindows, All rights reserved
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* ======================================== */
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#ifndef __Acceleration_H
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#include "Acceleration.h"
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#endif
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void Acceleration::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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double intensity = pow(A,3)*(32/overallscale);
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double wet = B;
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double dry = 1.0 - wet;
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double senseL;
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double smoothL;
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double senseR;
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double smoothR;
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double accumulatorSample;
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double drySampleL;
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double drySampleR;
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long double inputSampleL;
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long double inputSampleR;
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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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drySampleL = inputSampleL;
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drySampleR = inputSampleR;
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s3L = s2L;
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s2L = s1L;
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s1L = inputSampleL;
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smoothL = (s3L + s2L + s1L) / 3.0;
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m1L = (s1L-s2L)*((s1L-s2L)/1.3);
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m2L = (s2L-s3L)*((s1L-s2L)/1.3);
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senseL = fabs(m1L-m2L);
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senseL = (intensity*intensity*senseL);
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o3L = o2L;
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o2L = o1L;
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o1L = senseL;
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if (o2L > senseL) senseL = o2L;
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if (o3L > senseL) senseL = o3L;
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//sense on the most intense
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s3R = s2R;
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s2R = s1R;
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s1R = inputSampleR;
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smoothR = (s3R + s2R + s1R) / 3.0;
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m1R = (s1R-s2R)*((s1R-s2R)/1.3);
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m2R = (s2R-s3R)*((s1R-s2R)/1.3);
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senseR = fabs(m1R-m2R);
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senseR = (intensity*intensity*senseR);
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o3R = o2R;
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o2R = o1R;
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o1R = senseR;
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if (o2R > senseR) senseR = o2R;
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if (o3R > senseR) senseR = o3R;
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//sense on the most intense
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if (senseL > 1.0) senseL = 1.0;
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if (senseR > 1.0) senseR = 1.0;
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inputSampleL *= (1.0-senseL);
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inputSampleR *= (1.0-senseR);
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inputSampleL += (smoothL*senseL);
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inputSampleR += (smoothR*senseR);
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senseL /= 2.0;
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senseR /= 2.0;
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accumulatorSample = (ataLastOutL*senseL)+(inputSampleL*(1.0-senseL));
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ataLastOutL = inputSampleL;
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inputSampleL = accumulatorSample;
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accumulatorSample = (ataLastOutR*senseR)+(inputSampleR*(1.0-senseR));
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ataLastOutR = inputSampleR;
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inputSampleR = accumulatorSample;
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if (wet !=1.0) {
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inputSampleL = (inputSampleL * wet) + (drySampleL * dry);
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inputSampleR = (inputSampleR * wet) + (drySampleR * dry);
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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 Acceleration::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;
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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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double intensity = pow(A,3)*(32/overallscale);
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double wet = B;
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double dry = 1.0 - wet;
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double senseL;
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double smoothL;
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double senseR;
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double smoothR;
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double accumulatorSample;
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double drySampleL;
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double drySampleR;
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long double inputSampleL;
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long double inputSampleR;
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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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drySampleL = inputSampleL;
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drySampleR = inputSampleR;
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s3L = s2L;
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s2L = s1L;
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s1L = inputSampleL;
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smoothL = (s3L + s2L + s1L) / 3.0;
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m1L = (s1L-s2L)*((s1L-s2L)/1.3);
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m2L = (s2L-s3L)*((s1L-s2L)/1.3);
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senseL = fabs(m1L-m2L);
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senseL = (intensity*intensity*senseL);
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o3L = o2L;
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o2L = o1L;
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o1L = senseL;
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if (o2L > senseL) senseL = o2L;
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if (o3L > senseL) senseL = o3L;
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//sense on the most intense
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s3R = s2R;
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s2R = s1R;
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s1R = inputSampleR;
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smoothR = (s3R + s2R + s1R) / 3.0;
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m1R = (s1R-s2R)*((s1R-s2R)/1.3);
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m2R = (s2R-s3R)*((s1R-s2R)/1.3);
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senseR = fabs(m1R-m2R);
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senseR = (intensity*intensity*senseR);
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o3R = o2R;
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o2R = o1R;
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o1R = senseR;
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if (o2R > senseR) senseR = o2R;
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if (o3R > senseR) senseR = o3R;
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//sense on the most intense
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if (senseL > 1.0) senseL = 1.0;
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if (senseR > 1.0) senseR = 1.0;
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inputSampleL *= (1.0-senseL);
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inputSampleR *= (1.0-senseR);
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inputSampleL += (smoothL*senseL);
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inputSampleR += (smoothR*senseR);
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senseL /= 2.0;
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senseR /= 2.0;
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accumulatorSample = (ataLastOutL*senseL)+(inputSampleL*(1.0-senseL));
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ataLastOutL = inputSampleL;
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inputSampleL = accumulatorSample;
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accumulatorSample = (ataLastOutR*senseR)+(inputSampleR*(1.0-senseR));
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ataLastOutR = inputSampleR;
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inputSampleR = accumulatorSample;
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if (wet !=1.0) {
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inputSampleL = (inputSampleL * wet) + (drySampleL * dry);
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inputSampleR = (inputSampleR * wet) + (drySampleR * dry);
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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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} |