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312 lines
No EOL
14 KiB
C++
Executable file
312 lines
No EOL
14 KiB
C++
Executable file
/* ========================================
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* Hermepass - Hermepass.h
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* Copyright (c) 2016 airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __Hermepass_H
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#include "Hermepass.h"
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#endif
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void Hermepass::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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double fpOld = 0.618033988749894848204586; //golden ratio!
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double fpNew = 1.0 - fpOld;
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double rangescale = 0.1 / overallscale;
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double cutoff = pow(A,3);
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double slope = pow(B,3) * 6.0;
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double newA = cutoff * rangescale;
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double newB = newA; //other part of interleaved IIR is the same
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double newC = cutoff * rangescale; //first extra pole is the same
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cutoff = (cutoff * fpOld) + (0.00001 * fpNew);
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double newD = cutoff * rangescale;
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cutoff = (cutoff * fpOld) + (0.00001 * fpNew);
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double newE = cutoff * rangescale;
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cutoff = (cutoff * fpOld) + (0.00001 * fpNew);
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double newF = cutoff * rangescale;
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cutoff = (cutoff * fpOld) + (0.00001 * fpNew);
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double newG = cutoff * rangescale;
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cutoff = (cutoff * fpOld) + (0.00001 * fpNew);
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double newH = cutoff * rangescale;
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//converge toward the unvarying fixed cutoff value
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double oldA = 1.0 - newA;
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double oldB = 1.0 - newB;
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double oldC = 1.0 - newC;
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double oldD = 1.0 - newD;
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double oldE = 1.0 - newE;
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double oldF = 1.0 - newF;
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double oldG = 1.0 - newG;
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double oldH = 1.0 - newH;
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double polesC;
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double polesD;
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double polesE;
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double polesF;
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double polesG;
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double polesH;
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polesC = slope; if (slope > 1.0) polesC = 1.0; slope -= 1.0; if (slope < 0.0) slope = 0.0;
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polesD = slope; if (slope > 1.0) polesD = 1.0; slope -= 1.0; if (slope < 0.0) slope = 0.0;
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polesE = slope; if (slope > 1.0) polesE = 1.0; slope -= 1.0; if (slope < 0.0) slope = 0.0;
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polesF = slope; if (slope > 1.0) polesF = 1.0; slope -= 1.0; if (slope < 0.0) slope = 0.0;
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polesG = slope; if (slope > 1.0) polesG = 1.0; slope -= 1.0; if (slope < 0.0) slope = 0.0;
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polesH = slope; if (slope > 1.0) polesH = 1.0; slope -= 1.0; if (slope < 0.0) slope = 0.0;
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//each one will either be 0.0, the fractional slope value, or 1
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double inputSampleL;
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double inputSampleR;
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double tempSampleL;
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double tempSampleR;
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double correction;
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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 (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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tempSampleL = inputSampleL;
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tempSampleR = inputSampleR;
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//begin L channel
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if (fpFlip) {
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iirAL = (iirAL * oldA) + (tempSampleL * newA); tempSampleL -= iirAL; correction = iirAL;
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} else {
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iirBL = (iirBL * oldB) + (tempSampleL * newB); tempSampleL -= iirBL; correction = iirBL;
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}
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iirCL = (iirCL * oldC) + (tempSampleL * newC); tempSampleL -= iirCL;
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iirDL = (iirDL * oldD) + (tempSampleL * newD); tempSampleL -= iirDL;
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iirEL = (iirEL * oldE) + (tempSampleL * newE); tempSampleL -= iirEL;
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iirFL = (iirFL * oldF) + (tempSampleL * newF); tempSampleL -= iirFL;
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iirGL = (iirGL * oldG) + (tempSampleL * newG); tempSampleL -= iirGL;
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iirHL = (iirHL * oldH) + (tempSampleL * newH); tempSampleL -= iirHL;
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//set up all the iir filters in case they are used
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if (polesC == 1.0) correction += iirCL; if (polesC > 0.0 && polesC < 1.0) correction += (iirCL * polesC);
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if (polesD == 1.0) correction += iirDL; if (polesD > 0.0 && polesD < 1.0) correction += (iirDL * polesD);
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if (polesE == 1.0) correction += iirEL; if (polesE > 0.0 && polesE < 1.0) correction += (iirEL * polesE);
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if (polesF == 1.0) correction += iirFL; if (polesF > 0.0 && polesF < 1.0) correction += (iirFL * polesF);
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if (polesG == 1.0) correction += iirGL; if (polesG > 0.0 && polesG < 1.0) correction += (iirGL * polesG);
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if (polesH == 1.0) correction += iirHL; if (polesH > 0.0 && polesH < 1.0) correction += (iirHL * polesH);
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//each of these are added directly if they're fully engaged,
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//multiplied by 0-1 if they are the interpolated one, or skipped if they are beyond the interpolated one.
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//the purpose is to do all the math at the floating point exponent nearest to the tiny value in use.
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//also, it's formatted that way to easily substitute the next variable: this could be written as a loop
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//with everything an array value. However, this makes just as much sense for this few poles.
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inputSampleL -= correction;
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//end L channel
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//begin R channel
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if (fpFlip) {
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iirAR = (iirAR * oldA) + (tempSampleR * newA); tempSampleR -= iirAR; correction = iirAR;
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} else {
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iirBR = (iirBR * oldB) + (tempSampleR * newB); tempSampleR -= iirBR; correction = iirBR;
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}
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iirCR = (iirCR * oldC) + (tempSampleR * newC); tempSampleR -= iirCR;
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iirDR = (iirDR * oldD) + (tempSampleR * newD); tempSampleR -= iirDR;
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iirER = (iirER * oldE) + (tempSampleR * newE); tempSampleR -= iirER;
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iirFR = (iirFR * oldF) + (tempSampleR * newF); tempSampleR -= iirFR;
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iirGR = (iirGR * oldG) + (tempSampleR * newG); tempSampleR -= iirGR;
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iirHR = (iirHR * oldH) + (tempSampleR * newH); tempSampleR -= iirHR;
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//set up all the iir filters in case they are used
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if (polesC == 1.0) correction += iirCR; if (polesC > 0.0 && polesC < 1.0) correction += (iirCR * polesC);
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if (polesD == 1.0) correction += iirDR; if (polesD > 0.0 && polesD < 1.0) correction += (iirDR * polesD);
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if (polesE == 1.0) correction += iirER; if (polesE > 0.0 && polesE < 1.0) correction += (iirER * polesE);
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if (polesF == 1.0) correction += iirFR; if (polesF > 0.0 && polesF < 1.0) correction += (iirFR * polesF);
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if (polesG == 1.0) correction += iirGR; if (polesG > 0.0 && polesG < 1.0) correction += (iirGR * polesG);
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if (polesH == 1.0) correction += iirHR; if (polesH > 0.0 && polesH < 1.0) correction += (iirHR * polesH);
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//each of these are added directly if they're fully engaged,
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//multiplied by 0-1 if they are the interpolated one, or skipped if they are beyond the interpolated one.
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//the purpose is to do all the math at the floating point exponent nearest to the tiny value in use.
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//also, it's formatted that way to easily substitute the next variable: this could be written as a loop
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//with everything an array value. However, this makes just as much sense for this few poles.
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inputSampleR -= correction;
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//end R channel
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fpFlip = !fpFlip;
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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 Hermepass::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 fpOld = 0.618033988749894848204586; //golden ratio!
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double fpNew = 1.0 - fpOld;
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double rangescale = 0.1 / overallscale;
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double cutoff = pow(A,3);
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double slope = pow(B,3) * 6.0;
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double newA = cutoff * rangescale;
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double newB = newA; //other part of interleaved IIR is the same
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double newC = cutoff * rangescale; //first extra pole is the same
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cutoff = (cutoff * fpOld) + (0.00001 * fpNew);
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double newD = cutoff * rangescale;
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cutoff = (cutoff * fpOld) + (0.00001 * fpNew);
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double newE = cutoff * rangescale;
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cutoff = (cutoff * fpOld) + (0.00001 * fpNew);
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double newF = cutoff * rangescale;
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cutoff = (cutoff * fpOld) + (0.00001 * fpNew);
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double newG = cutoff * rangescale;
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cutoff = (cutoff * fpOld) + (0.00001 * fpNew);
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double newH = cutoff * rangescale;
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//converge toward the unvarying fixed cutoff value
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double oldA = 1.0 - newA;
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double oldB = 1.0 - newB;
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double oldC = 1.0 - newC;
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double oldD = 1.0 - newD;
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double oldE = 1.0 - newE;
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double oldF = 1.0 - newF;
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double oldG = 1.0 - newG;
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double oldH = 1.0 - newH;
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double polesC;
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double polesD;
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double polesE;
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double polesF;
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double polesG;
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double polesH;
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polesC = slope; if (slope > 1.0) polesC = 1.0; slope -= 1.0; if (slope < 0.0) slope = 0.0;
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polesD = slope; if (slope > 1.0) polesD = 1.0; slope -= 1.0; if (slope < 0.0) slope = 0.0;
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polesE = slope; if (slope > 1.0) polesE = 1.0; slope -= 1.0; if (slope < 0.0) slope = 0.0;
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polesF = slope; if (slope > 1.0) polesF = 1.0; slope -= 1.0; if (slope < 0.0) slope = 0.0;
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polesG = slope; if (slope > 1.0) polesG = 1.0; slope -= 1.0; if (slope < 0.0) slope = 0.0;
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polesH = slope; if (slope > 1.0) polesH = 1.0; slope -= 1.0; if (slope < 0.0) slope = 0.0;
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//each one will either be 0.0, the fractional slope value, or 1
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double inputSampleL;
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double inputSampleR;
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double tempSampleL;
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double tempSampleR;
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double correction;
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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 (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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tempSampleL = inputSampleL;
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tempSampleR = inputSampleR;
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//begin L channel
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if (fpFlip) {
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iirAL = (iirAL * oldA) + (tempSampleL * newA); tempSampleL -= iirAL; correction = iirAL;
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} else {
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iirBL = (iirBL * oldB) + (tempSampleL * newB); tempSampleL -= iirBL; correction = iirBL;
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}
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iirCL = (iirCL * oldC) + (tempSampleL * newC); tempSampleL -= iirCL;
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iirDL = (iirDL * oldD) + (tempSampleL * newD); tempSampleL -= iirDL;
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iirEL = (iirEL * oldE) + (tempSampleL * newE); tempSampleL -= iirEL;
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iirFL = (iirFL * oldF) + (tempSampleL * newF); tempSampleL -= iirFL;
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iirGL = (iirGL * oldG) + (tempSampleL * newG); tempSampleL -= iirGL;
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iirHL = (iirHL * oldH) + (tempSampleL * newH); tempSampleL -= iirHL;
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//set up all the iir filters in case they are used
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if (polesC == 1.0) correction += iirCL; if (polesC > 0.0 && polesC < 1.0) correction += (iirCL * polesC);
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if (polesD == 1.0) correction += iirDL; if (polesD > 0.0 && polesD < 1.0) correction += (iirDL * polesD);
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if (polesE == 1.0) correction += iirEL; if (polesE > 0.0 && polesE < 1.0) correction += (iirEL * polesE);
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if (polesF == 1.0) correction += iirFL; if (polesF > 0.0 && polesF < 1.0) correction += (iirFL * polesF);
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if (polesG == 1.0) correction += iirGL; if (polesG > 0.0 && polesG < 1.0) correction += (iirGL * polesG);
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if (polesH == 1.0) correction += iirHL; if (polesH > 0.0 && polesH < 1.0) correction += (iirHL * polesH);
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//each of these are added directly if they're fully engaged,
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//multiplied by 0-1 if they are the interpolated one, or skipped if they are beyond the interpolated one.
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//the purpose is to do all the math at the floating point exponent nearest to the tiny value in use.
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//also, it's formatted that way to easily substitute the next variable: this could be written as a loop
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//with everything an array value. However, this makes just as much sense for this few poles.
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inputSampleL -= correction;
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//end L channel
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//begin R channel
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if (fpFlip) {
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iirAR = (iirAR * oldA) + (tempSampleR * newA); tempSampleR -= iirAR; correction = iirAR;
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} else {
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iirBR = (iirBR * oldB) + (tempSampleR * newB); tempSampleR -= iirBR; correction = iirBR;
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}
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iirCR = (iirCR * oldC) + (tempSampleR * newC); tempSampleR -= iirCR;
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iirDR = (iirDR * oldD) + (tempSampleR * newD); tempSampleR -= iirDR;
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iirER = (iirER * oldE) + (tempSampleR * newE); tempSampleR -= iirER;
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iirFR = (iirFR * oldF) + (tempSampleR * newF); tempSampleR -= iirFR;
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iirGR = (iirGR * oldG) + (tempSampleR * newG); tempSampleR -= iirGR;
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iirHR = (iirHR * oldH) + (tempSampleR * newH); tempSampleR -= iirHR;
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//set up all the iir filters in case they are used
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if (polesC == 1.0) correction += iirCR; if (polesC > 0.0 && polesC < 1.0) correction += (iirCR * polesC);
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if (polesD == 1.0) correction += iirDR; if (polesD > 0.0 && polesD < 1.0) correction += (iirDR * polesD);
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if (polesE == 1.0) correction += iirER; if (polesE > 0.0 && polesE < 1.0) correction += (iirER * polesE);
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if (polesF == 1.0) correction += iirFR; if (polesF > 0.0 && polesF < 1.0) correction += (iirFR * polesF);
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if (polesG == 1.0) correction += iirGR; if (polesG > 0.0 && polesG < 1.0) correction += (iirGR * polesG);
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if (polesH == 1.0) correction += iirHR; if (polesH > 0.0 && polesH < 1.0) correction += (iirHR * polesH);
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//each of these are added directly if they're fully engaged,
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//multiplied by 0-1 if they are the interpolated one, or skipped if they are beyond the interpolated one.
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//the purpose is to do all the math at the floating point exponent nearest to the tiny value in use.
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//also, it's formatted that way to easily substitute the next variable: this could be written as a loop
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//with everything an array value. However, this makes just as much sense for this few poles.
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inputSampleR -= correction;
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//end R channel
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fpFlip = !fpFlip;
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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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} |