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https://github.com/airwindows/airwindows.git
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266 lines
No EOL
8.9 KiB
C++
Executable file
266 lines
No EOL
8.9 KiB
C++
Executable file
/* ========================================
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* Ensemble - Ensemble.h
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* Copyright (c) 2016 airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __Ensemble_H
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#include "Ensemble.h"
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#endif
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void Ensemble::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 spd = pow(0.4+(B/12),10);
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spd *= overallscale;
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double depth = 0.002 / spd;
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double tupi = 3.141592653589793238 * 2.0;
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double taps = floor((A*46.0)+2.9);
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double brighten = C;
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double wet = D;
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//removed extra dry variable
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double hapi = 3.141592653589793238 / taps;
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double offset;
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double floffset;
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double start[49];
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double sinoffset[49];
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double speed[49];
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int count;
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int ensemble;
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double tempL;
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double tempR;
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double inputSampleL;
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double inputSampleR;
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double drySampleL;
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double drySampleR;
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//now we'll precalculate some stuff that needn't be in every sample
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for(count = 1; count <= taps; count++)
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{
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start[count] = depth * count;
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sinoffset[count] = hapi * (count-1);
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speed[count] = spd / (1 + (count/taps));
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}
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//that's for speeding up things in the sample-processing area
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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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drySampleL = inputSampleL;
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drySampleR = inputSampleR;
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airFactorL = airPrevL - inputSampleL;
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if (fpFlip) {airEvenL += airFactorL; airOddL -= airFactorL; airFactorL = airEvenL;}
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else {airOddL += airFactorL; airEvenL -= airFactorL; airFactorL = airOddL;}
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airOddL = (airOddL - ((airOddL - airEvenL)/256.0)) / 1.0001;
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airEvenL = (airEvenL - ((airEvenL - airOddL)/256.0)) / 1.0001;
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airPrevL = inputSampleL;
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inputSampleL += (airFactorL*brighten);
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//air, compensates for loss of highs in flanger's interpolation
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airFactorR = airPrevR - inputSampleR;
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if (fpFlip) {airEvenR += airFactorR; airOddR -= airFactorR; airFactorR = airEvenR;}
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else {airOddR += airFactorR; airEvenR -= airFactorR; airFactorR = airOddR;}
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airOddR = (airOddR - ((airOddR - airEvenR)/256.0)) / 1.0001;
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airEvenR = (airEvenR - ((airEvenR - airOddR)/256.0)) / 1.0001;
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airPrevR = inputSampleR;
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inputSampleR += (airFactorR*brighten);
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//air, compensates for loss of highs in flanger's interpolation
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fpFlip = !fpFlip;
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if (gcount < 1 || gcount > 32767) {gcount = 32767;}
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count = gcount;
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dL[count+32767] = dL[count] = tempL = inputSampleL;
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dR[count+32767] = dR[count] = tempR = inputSampleR;
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//double buffer
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for(ensemble = 1; ensemble <= taps; ensemble++)
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{
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offset = start[ensemble] + (depth * sin(sweep[ensemble]+sinoffset[ensemble]));
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floffset = offset-floor(offset);
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count = gcount + (int)floor(offset);
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tempL += dL[count] * (1-floffset); //less as value moves away from .0
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tempL += dL[count+1]; //we can assume always using this in one way or another?
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tempL += dL[count+2] * floffset; //greater as value moves away from .0
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tempL -= ((dL[count]-dL[count+1])-(dL[count+1]-dL[count+2]))/50; //interpolation hacks 'r us
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tempR += dR[count] * (1-floffset); //less as value moves away from .0
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tempR += dR[count+1]; //we can assume always using this in one way or another?
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tempR += dR[count+2] * floffset; //greater as value moves away from .0
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tempR -= ((dR[count]-dR[count+1])-(dR[count+1]-dR[count+2]))/50; //interpolation hacks 'r us
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sweep[ensemble] += speed[ensemble];
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if (sweep[ensemble] > tupi){sweep[ensemble] -= tupi;}
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}
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gcount--;
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//still scrolling through the samples, remember
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inputSampleL = tempL/(4.0*sqrt(taps));
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inputSampleR = tempR/(4.0*sqrt(taps));
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if (wet !=1.0) {
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inputSampleL = (inputSampleL * wet) + (drySampleL * (1.0-wet));
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inputSampleR = (inputSampleR * wet) + (drySampleR * (1.0-wet));
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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 Ensemble::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 spd = pow(0.4+(B/12),10);
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spd *= overallscale;
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double depth = 0.002 / spd;
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double tupi = 3.141592653589793238 * 2.0;
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double taps = floor((A*46.0)+2.9);
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double brighten = C;
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double wet = D;
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//removed extra dry variable
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double hapi = 3.141592653589793238 / taps;
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double offset;
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double floffset;
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double start[49];
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double sinoffset[49];
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double speed[49];
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int count;
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int ensemble;
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double tempL;
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double tempR;
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double inputSampleL;
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double inputSampleR;
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double drySampleL;
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double drySampleR;
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//now we'll precalculate some stuff that needn't be in every sample
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for(count = 1; count <= taps; count++)
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{
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start[count] = depth * count;
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sinoffset[count] = hapi * (count-1);
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speed[count] = spd / (1 + (count/taps));
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}
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//that's for speeding up things in the sample-processing area
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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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drySampleL = inputSampleL;
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drySampleR = inputSampleR;
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airFactorL = airPrevL - inputSampleL;
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if (fpFlip) {airEvenL += airFactorL; airOddL -= airFactorL; airFactorL = airEvenL;}
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else {airOddL += airFactorL; airEvenL -= airFactorL; airFactorL = airOddL;}
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airOddL = (airOddL - ((airOddL - airEvenL)/256.0)) / 1.0001;
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airEvenL = (airEvenL - ((airEvenL - airOddL)/256.0)) / 1.0001;
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airPrevL = inputSampleL;
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inputSampleL += (airFactorL*brighten);
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//air, compensates for loss of highs in flanger's interpolation
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airFactorR = airPrevR - inputSampleR;
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if (fpFlip) {airEvenR += airFactorR; airOddR -= airFactorR; airFactorR = airEvenR;}
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else {airOddR += airFactorR; airEvenR -= airFactorR; airFactorR = airOddR;}
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airOddR = (airOddR - ((airOddR - airEvenR)/256.0)) / 1.0001;
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airEvenR = (airEvenR - ((airEvenR - airOddR)/256.0)) / 1.0001;
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airPrevR = inputSampleR;
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inputSampleR += (airFactorR*brighten);
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//air, compensates for loss of highs in flanger's interpolation
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fpFlip = !fpFlip;
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if (gcount < 1 || gcount > 32767) {gcount = 32767;}
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count = gcount;
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dL[count+32767] = dL[count] = tempL = inputSampleL;
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dR[count+32767] = dR[count] = tempR = inputSampleR;
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//double buffer
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for(ensemble = 1; ensemble <= taps; ensemble++)
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{
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offset = start[ensemble] + (depth * sin(sweep[ensemble]+sinoffset[ensemble]));
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floffset = offset-floor(offset);
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count = gcount + (int)floor(offset);
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tempL += dL[count] * (1-floffset); //less as value moves away from .0
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tempL += dL[count+1]; //we can assume always using this in one way or another?
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tempL += dL[count+2] * floffset; //greater as value moves away from .0
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tempL -= ((dL[count]-dL[count+1])-(dL[count+1]-dL[count+2]))/50; //interpolation hacks 'r us
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tempR += dR[count] * (1-floffset); //less as value moves away from .0
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tempR += dR[count+1]; //we can assume always using this in one way or another?
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tempR += dR[count+2] * floffset; //greater as value moves away from .0
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tempR -= ((dR[count]-dR[count+1])-(dR[count+1]-dR[count+2]))/50; //interpolation hacks 'r us
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sweep[ensemble] += speed[ensemble];
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if (sweep[ensemble] > tupi){sweep[ensemble] -= tupi;}
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}
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gcount--;
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//still scrolling through the samples, remember
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inputSampleL = tempL/(4.0*sqrt(taps));
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inputSampleR = tempR/(4.0*sqrt(taps));
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if (wet !=1.0) {
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inputSampleL = (inputSampleL * wet) + (drySampleL * (1.0-wet));
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inputSampleR = (inputSampleR * wet) + (drySampleR * (1.0-wet));
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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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} |