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322 lines
14 KiB
C++
Executable file
322 lines
14 KiB
C++
Executable file
/* ========================================
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* Density2 - Density2.h
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* Copyright (c) 2016 airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __Density2_H
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#include "Density2.h"
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#endif
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void Density2::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 density = (A*5.0)-1.0;
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double out = fabs(density);
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while (out > 1.0) out = out - 1.0;
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density = density * fabs(density);
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double iirAmount = pow(B,3)/overallscale;
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double output = C;
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double wet = D;
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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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double halfwaySampleL = (inputSampleL + last1SampleL + ((-last2SampleL + last3SampleL) * 0.0414213562373095048801688)) / 2.0;
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double halfDrySampleL = halfwaySampleL;
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double halfwaySampleR = (inputSampleR + last1SampleR + ((-last2SampleR + last3SampleR) * 0.0414213562373095048801688)) / 2.0;
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double halfDrySampleR = halfwaySampleR;
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last3SampleL = last2SampleL; last2SampleL = last1SampleL; last1SampleL = inputSampleL;
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last3SampleR = last2SampleR; last2SampleR = last1SampleR; last1SampleR = inputSampleR;
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iirSampleBL = (iirSampleBL * (1.0 - iirAmount)) + (halfwaySampleL * iirAmount); halfwaySampleL -= iirSampleBL; //highpass section
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iirSampleBR = (iirSampleBR * (1.0 - iirAmount)) + (halfwaySampleR * iirAmount); halfwaySampleR -= iirSampleBR; //highpass section
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double bridgerectifier;
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double count = density;
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while (count > 1.0) {
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bridgerectifier = fabs(halfwaySampleL)*1.57079633;
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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bridgerectifier = sin(bridgerectifier);
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if (halfwaySampleL > 0.0) halfwaySampleL = bridgerectifier;
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else halfwaySampleL = -bridgerectifier;
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count = count - 1.0;
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}
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bridgerectifier = fabs(halfwaySampleL)*1.57079633;
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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if (density > 0) bridgerectifier = sin(bridgerectifier);
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else bridgerectifier = 1-cos(bridgerectifier); //produce either boosted or starved version
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if (halfwaySampleL > 0) halfwaySampleL = (halfwaySampleL*(1.0-out))+(bridgerectifier*out);
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else halfwaySampleL = (halfwaySampleL*(1.0-out))-(bridgerectifier*out); //blend according to density control
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count = density;
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while (count > 1.0) {
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bridgerectifier = fabs(halfwaySampleR)*1.57079633;
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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bridgerectifier = sin(bridgerectifier);
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if (halfwaySampleR > 0.0) halfwaySampleR = bridgerectifier;
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else halfwaySampleR = -bridgerectifier;
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count = count - 1.0;
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}
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bridgerectifier = fabs(halfwaySampleR)*1.57079633;
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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if (density > 0) bridgerectifier = sin(bridgerectifier);
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else bridgerectifier = 1-cos(bridgerectifier); //produce either boosted or starved version
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if (halfwaySampleR > 0) halfwaySampleR = (halfwaySampleR*(1.0-out))+(bridgerectifier*out);
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else halfwaySampleR = (halfwaySampleR*(1.0-out))-(bridgerectifier*out); //blend according to density control
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ataCL = halfwaySampleL - halfDrySampleL;
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ataAL *= 0.915965594177219015; ataBL *= 0.915965594177219015;
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ataBL += ataCL; ataAL -= ataCL; ataCL = ataBL;
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double halfDiffSampleL = ataCL * 0.915965594177219015;
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ataCR = halfwaySampleR - halfDrySampleR;
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ataAR *= 0.915965594177219015; ataBR *= 0.915965594177219015;
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ataBR += ataCR; ataAR -= ataCR; ataCR = ataBR;
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double halfDiffSampleR = ataCR * 0.915965594177219015;
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iirSampleAL = (iirSampleAL * (1.0 - iirAmount)) + (inputSampleL * iirAmount); inputSampleL -= iirSampleAL; //highpass section
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iirSampleAR = (iirSampleAR * (1.0 - iirAmount)) + (inputSampleR * iirAmount); inputSampleR -= iirSampleAR; //highpass section
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count = density;
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while (count > 1.0) {
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bridgerectifier = fabs(inputSampleL)*1.57079633;
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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bridgerectifier = sin(bridgerectifier);
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if (inputSampleL > 0.0) inputSampleL = bridgerectifier;
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else inputSampleL = -bridgerectifier;
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count = count - 1.0;
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}
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bridgerectifier = fabs(inputSampleL)*1.57079633;
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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if (density > 0) bridgerectifier = sin(bridgerectifier);
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else bridgerectifier = 1-cos(bridgerectifier); //produce either boosted or starved version
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if (inputSampleL > 0) inputSampleL = (inputSampleL*(1-out))+(bridgerectifier*out);
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else inputSampleL = (inputSampleL*(1-out))-(bridgerectifier*out); //blend according to density control
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count = density;
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while (count > 1.0) {
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bridgerectifier = fabs(inputSampleR)*1.57079633;
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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bridgerectifier = sin(bridgerectifier);
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if (inputSampleR > 0.0) inputSampleR = bridgerectifier;
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else inputSampleR = -bridgerectifier;
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count = count - 1.0;
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}
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bridgerectifier = fabs(inputSampleR)*1.57079633;
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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if (density > 0) bridgerectifier = sin(bridgerectifier);
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else bridgerectifier = 1-cos(bridgerectifier); //produce either boosted or starved version
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if (inputSampleR > 0) inputSampleR = (inputSampleR*(1-out))+(bridgerectifier*out);
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else inputSampleR = (inputSampleR*(1-out))-(bridgerectifier*out); //blend according to density control
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ataCL = inputSampleL - drySampleL;
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ataAL *= 0.915965594177219015; ataBL *= 0.915965594177219015;
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ataAL += ataCL; ataBL -= ataCL; ataCL = ataAL;
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double diffSampleL = ataCL * 0.915965594177219015;
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ataCR = inputSampleR - drySampleR;
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ataAR *= 0.915965594177219015; ataBR *= 0.915965594177219015;
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ataAR += ataCR; ataBR -= ataCR; ataCR = ataAR;
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double diffSampleR = ataCR * 0.915965594177219015;
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inputSampleL = drySampleL + ((diffSampleL + halfDiffSampleL + lastDiffSampleL) / 1.187);
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lastDiffSampleL = diffSampleL / 2.0;
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inputSampleL *= output;
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inputSampleL = (drySampleL*(1.0-wet))+(inputSampleL*wet);
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inputSampleR = drySampleR + ((diffSampleR + halfDiffSampleR + lastDiffSampleR) / 1.187);
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lastDiffSampleR = diffSampleR / 2.0;
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inputSampleR *= output;
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inputSampleR = (drySampleR*(1.0-wet))+(inputSampleR*wet);
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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 Density2::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 density = (A*5.0)-1.0;
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double out = fabs(density);
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while (out > 1.0) out = out - 1.0;
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density = density * fabs(density);
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double iirAmount = pow(B,3)/overallscale;
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double output = C;
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double wet = D;
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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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double halfwaySampleL = (inputSampleL + last1SampleL + ((-last2SampleL + last3SampleL) * 0.0414213562373095048801688)) / 2.0;
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double halfDrySampleL = halfwaySampleL;
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double halfwaySampleR = (inputSampleR + last1SampleR + ((-last2SampleR + last3SampleR) * 0.0414213562373095048801688)) / 2.0;
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double halfDrySampleR = halfwaySampleR;
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last3SampleL = last2SampleL; last2SampleL = last1SampleL; last1SampleL = inputSampleL;
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last3SampleR = last2SampleR; last2SampleR = last1SampleR; last1SampleR = inputSampleR;
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iirSampleBL = (iirSampleBL * (1.0 - iirAmount)) + (halfwaySampleL * iirAmount); halfwaySampleL -= iirSampleBL; //highpass section
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iirSampleBR = (iirSampleBR * (1.0 - iirAmount)) + (halfwaySampleR * iirAmount); halfwaySampleR -= iirSampleBR; //highpass section
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double bridgerectifier;
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double count = density;
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while (count > 1.0) {
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bridgerectifier = fabs(halfwaySampleL)*1.57079633;
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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bridgerectifier = sin(bridgerectifier);
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if (halfwaySampleL > 0.0) halfwaySampleL = bridgerectifier;
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else halfwaySampleL = -bridgerectifier;
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count = count - 1.0;
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}
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bridgerectifier = fabs(halfwaySampleL)*1.57079633;
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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if (density > 0) bridgerectifier = sin(bridgerectifier);
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else bridgerectifier = 1-cos(bridgerectifier); //produce either boosted or starved version
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if (halfwaySampleL > 0) halfwaySampleL = (halfwaySampleL*(1.0-out))+(bridgerectifier*out);
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else halfwaySampleL = (halfwaySampleL*(1.0-out))-(bridgerectifier*out); //blend according to density control
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count = density;
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while (count > 1.0) {
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bridgerectifier = fabs(halfwaySampleR)*1.57079633;
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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bridgerectifier = sin(bridgerectifier);
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if (halfwaySampleR > 0.0) halfwaySampleR = bridgerectifier;
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else halfwaySampleR = -bridgerectifier;
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count = count - 1.0;
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}
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bridgerectifier = fabs(halfwaySampleR)*1.57079633;
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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if (density > 0) bridgerectifier = sin(bridgerectifier);
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else bridgerectifier = 1-cos(bridgerectifier); //produce either boosted or starved version
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if (halfwaySampleR > 0) halfwaySampleR = (halfwaySampleR*(1.0-out))+(bridgerectifier*out);
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else halfwaySampleR = (halfwaySampleR*(1.0-out))-(bridgerectifier*out); //blend according to density control
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ataCL = halfwaySampleL - halfDrySampleL;
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ataAL *= 0.915965594177219015; ataBL *= 0.915965594177219015;
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ataBL += ataCL; ataAL -= ataCL; ataCL = ataBL;
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double halfDiffSampleL = ataCL * 0.915965594177219015;
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ataCR = halfwaySampleR - halfDrySampleR;
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ataAR *= 0.915965594177219015; ataBR *= 0.915965594177219015;
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ataBR += ataCR; ataAR -= ataCR; ataCR = ataBR;
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double halfDiffSampleR = ataCR * 0.915965594177219015;
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iirSampleAL = (iirSampleAL * (1.0 - iirAmount)) + (inputSampleL * iirAmount); inputSampleL -= iirSampleAL; //highpass section
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iirSampleAR = (iirSampleAR * (1.0 - iirAmount)) + (inputSampleR * iirAmount); inputSampleR -= iirSampleAR; //highpass section
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count = density;
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while (count > 1.0) {
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bridgerectifier = fabs(inputSampleL)*1.57079633;
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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bridgerectifier = sin(bridgerectifier);
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if (inputSampleL > 0.0) inputSampleL = bridgerectifier;
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else inputSampleL = -bridgerectifier;
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count = count - 1.0;
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}
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bridgerectifier = fabs(inputSampleL)*1.57079633;
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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if (density > 0) bridgerectifier = sin(bridgerectifier);
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else bridgerectifier = 1-cos(bridgerectifier); //produce either boosted or starved version
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if (inputSampleL > 0) inputSampleL = (inputSampleL*(1-out))+(bridgerectifier*out);
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else inputSampleL = (inputSampleL*(1-out))-(bridgerectifier*out); //blend according to density control
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count = density;
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while (count > 1.0) {
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bridgerectifier = fabs(inputSampleR)*1.57079633;
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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bridgerectifier = sin(bridgerectifier);
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if (inputSampleR > 0.0) inputSampleR = bridgerectifier;
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else inputSampleR = -bridgerectifier;
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count = count - 1.0;
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}
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bridgerectifier = fabs(inputSampleR)*1.57079633;
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if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633;
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if (density > 0) bridgerectifier = sin(bridgerectifier);
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else bridgerectifier = 1-cos(bridgerectifier); //produce either boosted or starved version
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if (inputSampleR > 0) inputSampleR = (inputSampleR*(1-out))+(bridgerectifier*out);
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else inputSampleR = (inputSampleR*(1-out))-(bridgerectifier*out); //blend according to density control
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ataCL = inputSampleL - drySampleL;
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ataAL *= 0.915965594177219015; ataBL *= 0.915965594177219015;
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ataAL += ataCL; ataBL -= ataCL; ataCL = ataAL;
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double diffSampleL = ataCL * 0.915965594177219015;
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ataCR = inputSampleR - drySampleR;
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ataAR *= 0.915965594177219015; ataBR *= 0.915965594177219015;
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ataAR += ataCR; ataBR -= ataCR; ataCR = ataAR;
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double diffSampleR = ataCR * 0.915965594177219015;
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inputSampleL = drySampleL + ((diffSampleL + halfDiffSampleL + lastDiffSampleL) / 1.187);
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lastDiffSampleL = diffSampleL / 2.0;
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inputSampleL *= output;
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inputSampleL = (drySampleL*(1.0-wet))+(inputSampleL*wet);
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inputSampleR = drySampleR + ((diffSampleR + halfDiffSampleR + lastDiffSampleR) / 1.187);
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lastDiffSampleR = diffSampleR / 2.0;
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inputSampleR *= output;
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inputSampleR = (drySampleR*(1.0-wet))+(inputSampleR*wet);
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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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