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192 lines
6.4 KiB
C++
Executable file
192 lines
6.4 KiB
C++
Executable file
/* ========================================
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* DeRez3 - DeRez3.h
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* Copyright (c) airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __DeRez3_H
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#include "DeRez3.h"
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#endif
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void DeRez3::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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VstInt32 inFramesToProcess = sampleFrames; //vst doesn't give us this as a separate variable so we'll make it
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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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rezA = rezB;
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rezB = pow(A,3.0)/overallscale;
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bitA = bitB;
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bitB = (B*15.0)+1.0;
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wetA = wetB;
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wetB = C*2.0;
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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 temp = (double)sampleFrames/inFramesToProcess;
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double rez = (rezA*temp)+(rezB*(1.0-temp));
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double bit = (bitA*temp)+(bitB*(1.0-temp));
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double wet = (wetA*temp)+(wetB*(1.0-temp));
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if (rez < 0.0005) rez = 0.0005;
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double bitFactor = pow(2.0,bit);
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double dry = 2.0 - wet;
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if (wet > 1.0) wet = 1.0;
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if (wet < 0.0) wet = 0.0;
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if (dry > 1.0) dry = 1.0;
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if (dry < 0.0) dry = 0.0;
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//this bitcrush makes 50% full dry AND full wet, not crossfaded.
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//that's so it can be on tracks without cutting back dry channel when adjusted
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inputSampleL *= bitFactor;
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inputSampleL = floor(inputSampleL+(0.5/bitFactor));
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inputSampleL /= bitFactor;
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inputSampleR *= bitFactor;
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inputSampleR = floor(inputSampleR+(0.5/bitFactor));
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inputSampleR /= bitFactor;
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bez[bez_cycle] += rez;
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bez[bez_SampL] += (inputSampleL * rez);
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bez[bez_SampR] += (inputSampleR * rez);
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if (bez[bez_cycle] > 1.0) {
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bez[bez_cycle] -= 1.0;
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bez[bez_CL] = bez[bez_BL];
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bez[bez_BL] = bez[bez_AL];
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bez[bez_AL] = inputSampleL;
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bez[bez_SampL] = 0.0;
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bez[bez_CR] = bez[bez_BR];
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bez[bez_BR] = bez[bez_AR];
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bez[bez_AR] = inputSampleR;
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bez[bez_SampR] = 0.0;
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}
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double CBL = (bez[bez_CL]*(1.0-bez[bez_cycle]))+(bez[bez_BL]*bez[bez_cycle]);
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double CBR = (bez[bez_CR]*(1.0-bez[bez_cycle]))+(bez[bez_BR]*bez[bez_cycle]);
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double BAL = (bez[bez_BL]*(1.0-bez[bez_cycle]))+(bez[bez_AL]*bez[bez_cycle]);
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double BAR = (bez[bez_BR]*(1.0-bez[bez_cycle]))+(bez[bez_AR]*bez[bez_cycle]);
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double CBAL = (bez[bez_BL]+(CBL*(1.0-bez[bez_cycle]))+(BAL*bez[bez_cycle]))*0.5;
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double CBAR = (bez[bez_BR]+(CBR*(1.0-bez[bez_cycle]))+(BAR*bez[bez_cycle]))*0.5;
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inputSampleL = (wet*CBAL)+(dry*drySampleL);
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inputSampleR = (wet*CBAR)+(dry*drySampleR);
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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 DeRez3::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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VstInt32 inFramesToProcess = sampleFrames; //vst doesn't give us this as a separate variable so we'll make it
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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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rezA = rezB;
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rezB = pow(A,3.0)/overallscale;
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bitA = bitB;
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bitB = (B*15.0)+1.0;
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wetA = wetB;
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wetB = C*2.0;
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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 temp = (double)sampleFrames/inFramesToProcess;
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double rez = (rezA*temp)+(rezB*(1.0-temp));
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double bit = (bitA*temp)+(bitB*(1.0-temp));
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double wet = (wetA*temp)+(wetB*(1.0-temp));
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if (rez < 0.0005) rez = 0.0005;
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double bitFactor = pow(2.0,bit);
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double dry = 2.0 - wet;
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if (wet > 1.0) wet = 1.0;
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if (wet < 0.0) wet = 0.0;
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if (dry > 1.0) dry = 1.0;
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if (dry < 0.0) dry = 0.0;
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//this bitcrush makes 50% full dry AND full wet, not crossfaded.
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//that's so it can be on tracks without cutting back dry channel when adjusted
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inputSampleL *= bitFactor;
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inputSampleL = floor(inputSampleL+(0.5/bitFactor));
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inputSampleL /= bitFactor;
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inputSampleR *= bitFactor;
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inputSampleR = floor(inputSampleR+(0.5/bitFactor));
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inputSampleR /= bitFactor;
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bez[bez_cycle] += rez;
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bez[bez_SampL] += (inputSampleL * rez);
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bez[bez_SampR] += (inputSampleR * rez);
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if (bez[bez_cycle] > 1.0) {
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bez[bez_cycle] -= 1.0;
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bez[bez_CL] = bez[bez_BL];
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bez[bez_BL] = bez[bez_AL];
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bez[bez_AL] = inputSampleL;
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bez[bez_SampL] = 0.0;
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bez[bez_CR] = bez[bez_BR];
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bez[bez_BR] = bez[bez_AR];
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bez[bez_AR] = inputSampleR;
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bez[bez_SampR] = 0.0;
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}
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double CBL = (bez[bez_CL]*(1.0-bez[bez_cycle]))+(bez[bez_BL]*bez[bez_cycle]);
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double CBR = (bez[bez_CR]*(1.0-bez[bez_cycle]))+(bez[bez_BR]*bez[bez_cycle]);
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double BAL = (bez[bez_BL]*(1.0-bez[bez_cycle]))+(bez[bez_AL]*bez[bez_cycle]);
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double BAR = (bez[bez_BR]*(1.0-bez[bez_cycle]))+(bez[bez_AR]*bez[bez_cycle]);
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double CBAL = (bez[bez_BL]+(CBL*(1.0-bez[bez_cycle]))+(BAL*bez[bez_cycle]))*0.5;
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double CBAR = (bez[bez_BR]+(CBR*(1.0-bez[bez_cycle]))+(BAR*bez[bez_cycle]))*0.5;
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inputSampleL = (wet*CBAL)+(dry*drySampleL);
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inputSampleR = (wet*CBAR)+(dry*drySampleR);
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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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