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220 lines
7.4 KiB
C++
Executable file
220 lines
7.4 KiB
C++
Executable file
/* ========================================
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* Density3 - Density3.h
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* Copyright (c) airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __Density3_H
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#include "Density3.h"
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#endif
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void Density3::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;
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double iirAmount = pow(B,3)/overallscale;
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if (iirAmount == 0.0) {iirSampleL = 0.0; iirSampleR = 0.0;}
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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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iirSampleL = (iirSampleL * (1.0 - iirAmount)) + (inputSampleL * iirAmount);
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inputSampleL -= iirSampleL;
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iirSampleR = (iirSampleR * (1.0 - iirAmount)) + (inputSampleR * iirAmount);
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inputSampleR -= iirSampleR;
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double altered = inputSampleL;
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if (density > 1.0) {
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altered = fmax(fmin(inputSampleL*density*M_PI_2,M_PI_2),-M_PI_2);
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double X = altered*altered;
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double temp = altered*X;
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altered -= (temp / 6.0); temp *= X;
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altered += (temp / 120.0); temp *= X;
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altered -= (temp / 5040.0); temp *= X;
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altered += (temp / 362880.0); temp *= X;
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altered -= (temp / 39916800.0);
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}
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if (density < 1.0) {
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altered = fmax(fmin(inputSampleL,1.0),-1.0);
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double polarity = altered;
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double X = inputSampleL * altered;
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double temp = X;
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altered = (temp / 2.0); temp *= X;
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altered -= (temp / 24.0); temp *= X;
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altered += (temp / 720.0); temp *= X;
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altered -= (temp / 40320.0); temp *= X;
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altered += (temp / 3628800.0);
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altered *= ((polarity<0.0)?-1.0:1.0);
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}
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if (density > 2.0) inputSampleL = altered;
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else inputSampleL = (inputSampleL*(1.0-fabs(density-1.0)))+(altered*fabs(density-1.0));
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altered = inputSampleR;
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if (density > 1.0) {
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altered = fmax(fmin(inputSampleR*density*M_PI_2,M_PI_2),-M_PI_2);
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double X = altered*altered;
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double temp = altered*X;
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altered -= (temp / 6.0); temp *= X;
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altered += (temp / 120.0); temp *= X;
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altered -= (temp / 5040.0); temp *= X;
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altered += (temp / 362880.0); temp *= X;
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altered -= (temp / 39916800.0);
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}
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if (density < 1.0) {
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altered = fmax(fmin(inputSampleR,1.0),-1.0);
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double polarity = altered;
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double X = inputSampleR * altered;
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double temp = X;
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altered = (temp / 2.0); temp *= X;
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altered -= (temp / 24.0); temp *= X;
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altered += (temp / 720.0); temp *= X;
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altered -= (temp / 40320.0); temp *= X;
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altered += (temp / 3628800.0);
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altered *= ((polarity<0.0)?-1.0:1.0);
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}
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if (density > 2.0) inputSampleR = altered;
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else inputSampleR = (inputSampleR*(1.0-fabs(density-1.0)))+(altered*fabs(density-1.0));
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inputSampleL = (drySampleL*(1.0-wet))+(inputSampleL*output*wet);
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inputSampleR = (drySampleR*(1.0-wet))+(inputSampleR*output*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)) * 3.553e-44l * 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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if (fpdL-fpdR < 1073741824 || fpdR-fpdL < 1073741824) {
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fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;}
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inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 3.553e-44l * 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 Density3::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;
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double iirAmount = pow(B,3)/overallscale;
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if (iirAmount == 0.0) {iirSampleL = 0.0; iirSampleR = 0.0;}
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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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iirSampleL = (iirSampleL * (1.0 - iirAmount)) + (inputSampleL * iirAmount);
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inputSampleL -= iirSampleL;
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iirSampleR = (iirSampleR * (1.0 - iirAmount)) + (inputSampleR * iirAmount);
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inputSampleR -= iirSampleR;
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double altered = inputSampleL;
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if (density > 1.0) {
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altered = fmax(fmin(inputSampleL*density*M_PI_2,M_PI_2),-M_PI_2);
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double X = altered*altered;
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double temp = altered*X;
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altered -= (temp / 6.0); temp *= X;
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altered += (temp / 120.0); temp *= X;
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altered -= (temp / 5040.0); temp *= X;
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altered += (temp / 362880.0); temp *= X;
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altered -= (temp / 39916800.0);
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}
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if (density < 1.0) {
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altered = fmax(fmin(inputSampleL,1.0),-1.0);
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double polarity = altered;
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double X = inputSampleL * altered;
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double temp = X;
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altered = (temp / 2.0); temp *= X;
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altered -= (temp / 24.0); temp *= X;
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altered += (temp / 720.0); temp *= X;
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altered -= (temp / 40320.0); temp *= X;
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altered += (temp / 3628800.0);
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altered *= ((polarity<0.0)?-1.0:1.0);
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}
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if (density > 2.0) inputSampleL = altered;
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else inputSampleL = (inputSampleL*(1.0-fabs(density-1.0)))+(altered*fabs(density-1.0));
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altered = inputSampleR;
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if (density > 1.0) {
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altered = fmax(fmin(inputSampleR*density*M_PI_2,M_PI_2),-M_PI_2);
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double X = altered*altered;
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double temp = altered*X;
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altered -= (temp / 6.0); temp *= X;
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altered += (temp / 120.0); temp *= X;
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altered -= (temp / 5040.0); temp *= X;
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altered += (temp / 362880.0); temp *= X;
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altered -= (temp / 39916800.0);
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}
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if (density < 1.0) {
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altered = fmax(fmin(inputSampleR,1.0),-1.0);
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double polarity = altered;
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double X = inputSampleR * altered;
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double temp = X;
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altered = (temp / 2.0); temp *= X;
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altered -= (temp / 24.0); temp *= X;
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altered += (temp / 720.0); temp *= X;
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altered -= (temp / 40320.0); temp *= X;
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altered += (temp / 3628800.0);
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altered *= ((polarity<0.0)?-1.0:1.0);
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}
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if (density > 2.0) inputSampleR = altered;
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else inputSampleR = (inputSampleR*(1.0-fabs(density-1.0)))+(altered*fabs(density-1.0));
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inputSampleL = (drySampleL*(1.0-wet))+(inputSampleL*output*wet);
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inputSampleR = (drySampleR*(1.0-wet))+(inputSampleR*output*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)) * 3.553e-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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if (fpdL-fpdR < 1073741824 || fpdR-fpdL < 1073741824) {
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fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;}
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//inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 3.553e-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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