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174 lines
7 KiB
C++
Executable file
174 lines
7 KiB
C++
Executable file
/* ========================================
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* DubSub2 - DubSub2.h
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* Copyright (c) airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __DubSub2_H
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#include "DubSub2.h"
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#endif
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void DubSub2::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 headBumpDrive = (A*0.1)/overallscale;
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hdbA[hdb_freq] = (((B*B)*175.0)+25.0)/getSampleRate();
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hdbB[hdb_freq] = hdbA[hdb_freq]*0.9375;
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hdbB[hdb_reso] = hdbA[hdb_reso] = 0.618033988749894848204586;
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hdbB[hdb_a1] = hdbA[hdb_a1] = 0.0;
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double K = tan(M_PI * hdbA[hdb_freq]);
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double norm = 1.0 / (1.0 + K / hdbA[hdb_reso] + K * K);
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hdbA[hdb_a0] = K / hdbA[hdb_reso] * norm;
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hdbA[hdb_a2] = -hdbA[hdb_a0];
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hdbA[hdb_b1] = 2.0 * (K * K - 1.0) * norm;
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hdbA[hdb_b2] = (1.0 - K / hdbA[hdb_reso] + K * K) * norm;
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K = tan(M_PI * hdbB[hdb_freq]);
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norm = 1.0 / (1.0 + K / hdbB[hdb_reso] + K * K);
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hdbB[hdb_a0] = K / hdbB[hdb_reso] * norm;
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hdbB[hdb_a2] = -hdbB[hdb_a0];
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hdbB[hdb_b1] = 2.0 * (K * K - 1.0) * norm;
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hdbB[hdb_b2] = (1.0 - K / hdbB[hdb_reso] + K * K) * norm;
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double headWet = C;
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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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//begin HeadBump
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headBumpL += (inputSampleL * headBumpDrive);
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headBumpL -= (headBumpL * headBumpL * headBumpL * (0.0618/sqrt(overallscale)));
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headBumpR += (inputSampleR * headBumpDrive);
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headBumpR -= (headBumpR * headBumpR * headBumpR * (0.0618/sqrt(overallscale)));
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double headBiqSampleL = (headBumpL * hdbA[hdb_a0]) + hdbA[hdb_sL1];
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hdbA[hdb_sL1] = (headBumpL * hdbA[hdb_a1]) - (headBiqSampleL * hdbA[hdb_b1]) + hdbA[hdb_sL2];
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hdbA[hdb_sL2] = (headBumpL * hdbA[hdb_a2]) - (headBiqSampleL * hdbA[hdb_b2]);
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double headBumpSampleL = (headBiqSampleL * hdbB[hdb_a0]) + hdbB[hdb_sL1];
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hdbB[hdb_sL1] = (headBiqSampleL * hdbB[hdb_a1]) - (headBumpSampleL * hdbB[hdb_b1]) + hdbB[hdb_sL2];
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hdbB[hdb_sL2] = (headBiqSampleL * hdbB[hdb_a2]) - (headBumpSampleL * hdbB[hdb_b2]);
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double headBiqSampleR = (headBumpR * hdbA[hdb_a0]) + hdbA[hdb_sR1];
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hdbA[hdb_sR1] = (headBumpR * hdbA[hdb_a1]) - (headBiqSampleR * hdbA[hdb_b1]) + hdbA[hdb_sR2];
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hdbA[hdb_sR2] = (headBumpR * hdbA[hdb_a2]) - (headBiqSampleR * hdbA[hdb_b2]);
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double headBumpSampleR = (headBiqSampleR * hdbB[hdb_a0]) + hdbB[hdb_sR1];
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hdbB[hdb_sR1] = (headBiqSampleR * hdbB[hdb_a1]) - (headBumpSampleR * hdbB[hdb_b1]) + hdbB[hdb_sR2];
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hdbB[hdb_sR2] = (headBiqSampleR * hdbB[hdb_a2]) - (headBumpSampleR * hdbB[hdb_b2]);
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//end HeadBump
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inputSampleL = (headBumpSampleL * headWet) + (drySampleL * (1.0-headWet));
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inputSampleR = (headBumpSampleR * headWet) + (drySampleR * (1.0-headWet));
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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 DubSub2::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 headBumpDrive = (A*0.1)/overallscale;
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hdbA[hdb_freq] = (((B*B)*175.0)+25.0)/getSampleRate();
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hdbB[hdb_freq] = hdbA[hdb_freq]*0.9375;
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hdbB[hdb_reso] = hdbA[hdb_reso] = 0.618033988749894848204586;
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hdbB[hdb_a1] = hdbA[hdb_a1] = 0.0;
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double K = tan(M_PI * hdbA[hdb_freq]);
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double norm = 1.0 / (1.0 + K / hdbA[hdb_reso] + K * K);
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hdbA[hdb_a0] = K / hdbA[hdb_reso] * norm;
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hdbA[hdb_a2] = -hdbA[hdb_a0];
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hdbA[hdb_b1] = 2.0 * (K * K - 1.0) * norm;
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hdbA[hdb_b2] = (1.0 - K / hdbA[hdb_reso] + K * K) * norm;
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K = tan(M_PI * hdbB[hdb_freq]);
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norm = 1.0 / (1.0 + K / hdbB[hdb_reso] + K * K);
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hdbB[hdb_a0] = K / hdbB[hdb_reso] * norm;
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hdbB[hdb_a2] = -hdbB[hdb_a0];
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hdbB[hdb_b1] = 2.0 * (K * K - 1.0) * norm;
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hdbB[hdb_b2] = (1.0 - K / hdbB[hdb_reso] + K * K) * norm;
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double headWet = C;
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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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//begin HeadBump
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headBumpL += (inputSampleL * headBumpDrive);
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headBumpL -= (headBumpL * headBumpL * headBumpL * (0.0618/sqrt(overallscale)));
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headBumpR += (inputSampleR * headBumpDrive);
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headBumpR -= (headBumpR * headBumpR * headBumpR * (0.0618/sqrt(overallscale)));
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double headBiqSampleL = (headBumpL * hdbA[hdb_a0]) + hdbA[hdb_sL1];
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hdbA[hdb_sL1] = (headBumpL * hdbA[hdb_a1]) - (headBiqSampleL * hdbA[hdb_b1]) + hdbA[hdb_sL2];
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hdbA[hdb_sL2] = (headBumpL * hdbA[hdb_a2]) - (headBiqSampleL * hdbA[hdb_b2]);
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double headBumpSampleL = (headBiqSampleL * hdbB[hdb_a0]) + hdbB[hdb_sL1];
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hdbB[hdb_sL1] = (headBiqSampleL * hdbB[hdb_a1]) - (headBumpSampleL * hdbB[hdb_b1]) + hdbB[hdb_sL2];
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hdbB[hdb_sL2] = (headBiqSampleL * hdbB[hdb_a2]) - (headBumpSampleL * hdbB[hdb_b2]);
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double headBiqSampleR = (headBumpR * hdbA[hdb_a0]) + hdbA[hdb_sR1];
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hdbA[hdb_sR1] = (headBumpR * hdbA[hdb_a1]) - (headBiqSampleR * hdbA[hdb_b1]) + hdbA[hdb_sR2];
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hdbA[hdb_sR2] = (headBumpR * hdbA[hdb_a2]) - (headBiqSampleR * hdbA[hdb_b2]);
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double headBumpSampleR = (headBiqSampleR * hdbB[hdb_a0]) + hdbB[hdb_sR1];
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hdbB[hdb_sR1] = (headBiqSampleR * hdbB[hdb_a1]) - (headBumpSampleR * hdbB[hdb_b1]) + hdbB[hdb_sR2];
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hdbB[hdb_sR2] = (headBiqSampleR * hdbB[hdb_a2]) - (headBumpSampleR * hdbB[hdb_b2]);
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//end HeadBump
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inputSampleL = (headBumpSampleL * headWet) + (drySampleL * (1.0-headWet));
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inputSampleR = (headBumpSampleR * headWet) + (drySampleR * (1.0-headWet));
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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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