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206 lines
6.5 KiB
C++
Executable file
206 lines
6.5 KiB
C++
Executable file
/* ========================================
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* Hull - Hull.h
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* Copyright (c) 2016 airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __Hull_H
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#include "Hull.h"
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#endif
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void Hull::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 /= 96000.0;
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overallscale *= getSampleRate();
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if (overallscale > 1.0) overallscale = 1.0; //and if you go for 192k, rather than crash
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//it just cuts out the maximum (2000) depth of averaging you can get
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double hullSetting = pow(A,3)*overallscale;
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int limitA = (hullSetting*2000.0)+1.0;
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double divisorA = 1.0/limitA;
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int limitB = (hullSetting*1000.0)+1.0;
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double divisorB = 1.0/limitB;
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int limitC = sqrt(hullSetting*2000.0)+1.0;
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double divisorC = 1.0/limitC;
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double wet = -((B*2.0)-1.0); //functions as dark/bright
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while (--sampleFrames >= 0)
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{
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double inputSampleL = *in1;
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double inputSampleR = *in2;
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if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17;
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if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17;
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double drySampleL = inputSampleL;
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double drySampleR = inputSampleR;
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bPointer--; if (bPointer < 0) bPointer += 2000;
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bL[bPointer] = bL[bPointer+2000] = inputSampleL;
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bR[bPointer] = bR[bPointer+2000] = inputSampleR;
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int x = bPointer;
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double longAverageL = 0.0;
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double longAverageR = 0.0;
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double shortAverageL = 0.0;
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double shortAverageR = 0.0;
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while (x < bPointer+limitB) {
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shortAverageL += bL[x];
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shortAverageR += bR[x];
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longAverageL += bL[x];
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longAverageR += bR[x];
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x++;
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} //once shorter average is reached, continue to longer
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while (x < bPointer+limitA) {
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longAverageL += bL[x];
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longAverageR += bR[x];
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x++;
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}
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longAverageL *= divisorA;
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longAverageR *= divisorA;
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shortAverageL *= divisorB;
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shortAverageR *= divisorB;
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cPointer--; if (cPointer < 0) cPointer += 50;
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cL[cPointer] = cL[cPointer+50] = shortAverageL+(shortAverageL-longAverageL);
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cR[cPointer] = cR[cPointer+50] = shortAverageR+(shortAverageR-longAverageR);
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x = cPointer;
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double shortestAverageL = 0.0;
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double shortestAverageR = 0.0;
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while (x < cPointer+limitC) {
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shortestAverageL += cL[x];
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shortestAverageR += cR[x];
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x++;
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}
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shortestAverageL *= divisorC;
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shortestAverageR *= divisorC;
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if (wet > 0.0) {
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inputSampleL = (shortestAverageL * wet)+(drySampleL * (1.0-wet)); //dark
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inputSampleR = (shortestAverageR * wet)+(drySampleR * (1.0-wet)); //dark
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} else {
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inputSampleL = ((inputSampleL-shortestAverageL) * fabs(wet))+(drySampleL * (1.0+wet)); //bright
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inputSampleR = ((inputSampleR-shortestAverageR) * fabs(wet))+(drySampleR * (1.0+wet)); //bright
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}
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//begin 32 bit stereo floating point dither
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int expon; frexpf((float)inputSampleL, &expon);
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fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5;
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inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
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frexpf((float)inputSampleR, &expon);
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fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
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inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
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//end 32 bit stereo floating point dither
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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 Hull::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 /= 96000.0;
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overallscale *= getSampleRate();
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if (overallscale > 1.0) overallscale = 1.0; //and if you go for 192k, rather than crash
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//it just cuts out the maximum (2000) depth of averaging you can get
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double hullSetting = pow(A,3)*overallscale;
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int limitA = (hullSetting*2000.0)+1.0;
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double divisorA = 1.0/limitA;
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int limitB = (hullSetting*1000.0)+1.0;
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double divisorB = 1.0/limitB;
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int limitC = sqrt(hullSetting*2000.0)+1.0;
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double divisorC = 1.0/limitC;
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double wet = -((B*2.0)-1.0); //functions as dark/bright
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while (--sampleFrames >= 0)
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{
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double inputSampleL = *in1;
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double inputSampleR = *in2;
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if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17;
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if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17;
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double drySampleL = inputSampleL;
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double drySampleR = inputSampleR;
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bPointer--; if (bPointer < 0) bPointer += 2000;
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bL[bPointer] = bL[bPointer+2000] = inputSampleL;
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bR[bPointer] = bR[bPointer+2000] = inputSampleR;
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int x = bPointer;
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double longAverageL = 0.0;
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double longAverageR = 0.0;
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double shortAverageL = 0.0;
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double shortAverageR = 0.0;
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while (x < bPointer+limitB) {
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shortAverageL += bL[x];
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shortAverageR += bR[x];
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longAverageL += bL[x];
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longAverageR += bR[x];
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x++;
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} //once shorter average is reached, continue to longer
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while (x < bPointer+limitA) {
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longAverageL += bL[x];
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longAverageR += bR[x];
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x++;
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}
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longAverageL *= divisorA;
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longAverageR *= divisorA;
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shortAverageL *= divisorB;
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shortAverageR *= divisorB;
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cPointer--; if (cPointer < 0) cPointer += 50;
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cL[cPointer] = cL[cPointer+50] = shortAverageL+(shortAverageL-longAverageL);
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cR[cPointer] = cR[cPointer+50] = shortAverageR+(shortAverageR-longAverageR);
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x = cPointer;
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double shortestAverageL = 0.0;
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double shortestAverageR = 0.0;
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while (x < cPointer+limitC) {
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shortestAverageL += cL[x];
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shortestAverageR += cR[x];
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x++;
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}
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shortestAverageL *= divisorC;
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shortestAverageR *= divisorC;
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if (wet > 0.0) {
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inputSampleL = (shortestAverageL * wet)+(drySampleL * (1.0-wet)); //dark
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inputSampleR = (shortestAverageR * wet)+(drySampleR * (1.0-wet)); //dark
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} else {
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inputSampleL = ((inputSampleL-shortestAverageL) * fabs(wet))+(drySampleL * (1.0+wet)); //bright
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inputSampleR = ((inputSampleR-shortestAverageR) * fabs(wet))+(drySampleR * (1.0+wet)); //bright
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}
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//begin 64 bit stereo floating point dither
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//int expon; frexp((double)inputSampleL, &expon);
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fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5;
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//inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
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//frexp((double)inputSampleR, &expon);
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fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
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//inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
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//end 64 bit stereo floating point dither
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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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