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218 lines
8.2 KiB
C++
Executable file
218 lines
8.2 KiB
C++
Executable file
/* ========================================
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* Acceleration2 - Acceleration2.h
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* Copyright (c) 2016 airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __Acceleration2_H
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#include "Acceleration2.h"
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#endif
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void Acceleration2::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 intensity = pow(A,3)*32;
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double wet = B;
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int spacing = (int)(1.73*overallscale)+1;
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if (spacing > 16) spacing = 16;
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biquadA[0] = (20000.0 * (1.0-(A*0.618033988749894848204586))) / getSampleRate();
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biquadB[0] = 20000.0 / getSampleRate();
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biquadA[1] = 0.7071;
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biquadB[1] = 0.7071;
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double K = tan(M_PI * biquadA[0]);
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double norm = 1.0 / (1.0 + K / biquadA[1] + K * K);
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biquadA[2] = K * K * norm;
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biquadA[3] = 2.0 * biquadA[2];
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biquadA[4] = biquadA[2];
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biquadA[5] = 2.0 * (K * K - 1.0) * norm;
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biquadA[6] = (1.0 - K / biquadA[1] + K * K) * norm;
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K = tan(M_PI * biquadB[0]);
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norm = 1.0 / (1.0 + K / biquadB[1] + K * K);
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biquadB[2] = K * K * norm;
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biquadB[3] = 2.0 * biquadB[2];
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biquadB[4] = biquadB[2];
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biquadB[5] = 2.0 * (K * K - 1.0) * norm;
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biquadB[6] = (1.0 - K / biquadB[1] + K * K) * norm;
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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 tempSample = (inputSampleL * biquadA[2]) + biquadA[7];
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biquadA[7] = (inputSampleL * biquadA[3]) - (tempSample * biquadA[5]) + biquadA[8];
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biquadA[8] = (inputSampleL * biquadA[4]) - (tempSample * biquadA[6]);
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double smoothL = tempSample; //like mono AU, 7 and 8 store L channel
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tempSample = (inputSampleR * biquadA[2]) + biquadA[9];
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biquadA[9] = (inputSampleR * biquadA[3]) - (tempSample * biquadA[5]) + biquadA[10];
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biquadA[10] = (inputSampleR * biquadA[4]) - (tempSample * biquadA[6]);
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double smoothR = tempSample; //note: 9 and 10 store the R channel
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for(int count = spacing*2; count >= 0; count--) {sL[count+1] = sL[count]; sR[count+1] = sR[count];}
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sL[0] = inputSampleL; sR[0] = inputSampleR;
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m1L = (sL[0]-sL[spacing])*(fabs(sL[0]-sL[spacing]));
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m2L = (sL[spacing]-sL[spacing*2])*(fabs(sL[spacing]-sL[spacing*2]));
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double senseL = (intensity*intensity*fabs(m1L-m2L));
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if (senseL > 1.0) senseL = 1.0;
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inputSampleL = (inputSampleL * (1.0-senseL)) + (smoothL*senseL);
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m1R = (sR[0]-sR[spacing])*(fabs(sR[0]-sR[spacing]));
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m2R = (sR[spacing]-sR[spacing*2])*(fabs(sR[spacing]-sR[spacing*2]));
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double senseR = (intensity*intensity*fabs(m1R-m2R));
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if (senseR > 1.0) senseR = 1.0;
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inputSampleR = (inputSampleR * (1.0-senseR)) + (smoothR*senseR);
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tempSample = (inputSampleL * biquadB[2]) + biquadB[7];
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biquadB[7] = (inputSampleL * biquadB[3]) - (tempSample * biquadB[5]) + biquadB[8];
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biquadB[8] = (inputSampleL * biquadB[4]) - (tempSample * biquadB[6]);
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inputSampleL = tempSample; //like mono AU, 7 and 8 store L channel
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tempSample = (inputSampleR * biquadB[2]) + biquadB[9];
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biquadB[9] = (inputSampleR * biquadB[3]) - (tempSample * biquadB[5]) + biquadB[10];
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biquadB[10] = (inputSampleR * biquadB[4]) - (tempSample * biquadB[6]);
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inputSampleR = tempSample; //note: 9 and 10 store the R channel
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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 Acceleration2::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 intensity = pow(A,3)*32;
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double wet = B;
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int spacing = (int)(1.73*overallscale)+1;
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if (spacing > 16) spacing = 16;
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biquadA[0] = (20000.0 * (1.0-(A*0.618033988749894848204586))) / getSampleRate();
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biquadB[0] = 20000.0 / getSampleRate();
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biquadA[1] = 0.7071;
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biquadB[1] = 0.7071;
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double K = tan(M_PI * biquadA[0]);
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double norm = 1.0 / (1.0 + K / biquadA[1] + K * K);
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biquadA[2] = K * K * norm;
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biquadA[3] = 2.0 * biquadA[2];
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biquadA[4] = biquadA[2];
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biquadA[5] = 2.0 * (K * K - 1.0) * norm;
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biquadA[6] = (1.0 - K / biquadA[1] + K * K) * norm;
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K = tan(M_PI * biquadB[0]);
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norm = 1.0 / (1.0 + K / biquadB[1] + K * K);
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biquadB[2] = K * K * norm;
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biquadB[3] = 2.0 * biquadB[2];
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biquadB[4] = biquadB[2];
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biquadB[5] = 2.0 * (K * K - 1.0) * norm;
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biquadB[6] = (1.0 - K / biquadB[1] + K * K) * norm;
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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 tempSample = (inputSampleL * biquadA[2]) + biquadA[7];
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biquadA[7] = (inputSampleL * biquadA[3]) - (tempSample * biquadA[5]) + biquadA[8];
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biquadA[8] = (inputSampleL * biquadA[4]) - (tempSample * biquadA[6]);
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double smoothL = tempSample; //like mono AU, 7 and 8 store L channel
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tempSample = (inputSampleR * biquadA[2]) + biquadA[9];
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biquadA[9] = (inputSampleR * biquadA[3]) - (tempSample * biquadA[5]) + biquadA[10];
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biquadA[10] = (inputSampleR * biquadA[4]) - (tempSample * biquadA[6]);
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double smoothR = tempSample; //note: 9 and 10 store the R channel
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for(int count = spacing*2; count >= 0; count--) {sL[count+1] = sL[count]; sR[count+1] = sR[count];}
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sL[0] = inputSampleL; sR[0] = inputSampleR;
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m1L = (sL[0]-sL[spacing])*(fabs(sL[0]-sL[spacing]));
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m2L = (sL[spacing]-sL[spacing*2])*(fabs(sL[spacing]-sL[spacing*2]));
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double senseL = (intensity*intensity*fabs(m1L-m2L));
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if (senseL > 1.0) senseL = 1.0;
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inputSampleL = (inputSampleL * (1.0-senseL)) + (smoothL*senseL);
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m1R = (sR[0]-sR[spacing])*(fabs(sR[0]-sR[spacing]));
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m2R = (sR[spacing]-sR[spacing*2])*(fabs(sR[spacing]-sR[spacing*2]));
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double senseR = (intensity*intensity*fabs(m1R-m2R));
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if (senseR > 1.0) senseR = 1.0;
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inputSampleR = (inputSampleR * (1.0-senseR)) + (smoothR*senseR);
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tempSample = (inputSampleL * biquadB[2]) + biquadB[7];
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biquadB[7] = (inputSampleL * biquadB[3]) - (tempSample * biquadB[5]) + biquadB[8];
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biquadB[8] = (inputSampleL * biquadB[4]) - (tempSample * biquadB[6]);
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inputSampleL = tempSample; //like mono AU, 7 and 8 store L channel
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tempSample = (inputSampleR * biquadB[2]) + biquadB[9];
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biquadB[9] = (inputSampleR * biquadB[3]) - (tempSample * biquadB[5]) + biquadB[10];
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biquadB[10] = (inputSampleR * biquadB[4]) - (tempSample * biquadB[6]);
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inputSampleR = tempSample; //note: 9 and 10 store the R channel
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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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}
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