mirror of
https://github.com/airwindows/airwindows.git
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246 lines
8.7 KiB
C++
Executable file
246 lines
8.7 KiB
C++
Executable file
/* ========================================
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* Console0Channel - Console0Channel.h
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* Copyright (c) airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __Console0Channel_H
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#include "Console0Channel.h"
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#endif
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void Console0Channel::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 gainControl = (A*0.5)+0.05; //0.0 to 1.0
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int gainBits = 20; //start beyond maximum attenuation
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if (gainControl > 0.0) gainBits = floor(1.0 / gainControl);
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int bitshiftL = gainBits - 3;
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int bitshiftR = gainBits - 3;
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double panControl = (B*2.0)-1.0; //-1.0 to 1.0
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double panAttenuation = (1.0-fabs(panControl));
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int panBits = 20; //start centered
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if (panAttenuation > 0.0) panBits = floor(1.0 / panAttenuation);
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if (panControl > 0.25) bitshiftL += panBits;
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if (panControl < -0.25) bitshiftR += panBits;
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if (bitshiftL < -2) bitshiftL = -2; if (bitshiftL > 17) bitshiftL = 17;
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if (bitshiftR < -2) bitshiftR = -2; if (bitshiftR > 17) bitshiftR = 17;
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double gainL = 1.0;
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double gainR = 1.0;
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switch (bitshiftL)
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{
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case 17: gainL = 0.0; break;
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case 16: gainL = 0.0000152587890625; break;
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case 15: gainL = 0.000030517578125; break;
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case 14: gainL = 0.00006103515625; break;
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case 13: gainL = 0.0001220703125; break;
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case 12: gainL = 0.000244140625; break;
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case 11: gainL = 0.00048828125; break;
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case 10: gainL = 0.0009765625; break;
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case 9: gainL = 0.001953125; break;
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case 8: gainL = 0.00390625; break;
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case 7: gainL = 0.0078125; break;
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case 6: gainL = 0.015625; break;
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case 5: gainL = 0.03125; break;
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case 4: gainL = 0.0625; break;
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case 3: gainL = 0.125; break;
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case 2: gainL = 0.25; break;
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case 1: gainL = 0.5; break;
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case 0: gainL = 1.0; break;
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case -1: gainL = 2.0; break;
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case -2: gainL = 4.0; break;
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}
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switch (bitshiftR)
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{
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case 17: gainR = 0.0; break;
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case 16: gainR = 0.0000152587890625; break;
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case 15: gainR = 0.000030517578125; break;
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case 14: gainR = 0.00006103515625; break;
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case 13: gainR = 0.0001220703125; break;
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case 12: gainR = 0.000244140625; break;
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case 11: gainR = 0.00048828125; break;
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case 10: gainR = 0.0009765625; break;
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case 9: gainR = 0.001953125; break;
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case 8: gainR = 0.00390625; break;
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case 7: gainR = 0.0078125; break;
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case 6: gainR = 0.015625; break;
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case 5: gainR = 0.03125; break;
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case 4: gainR = 0.0625; break;
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case 3: gainR = 0.125; break;
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case 2: gainR = 0.25; break;
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case 1: gainR = 0.5; break;
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case 0: gainR = 1.0; break;
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case -1: gainR = 2.0; break;
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case -2: gainR = 4.0; break;
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}
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double temp;
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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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temp = inputSampleL;
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inputSampleL = (inputSampleL + avgAL) * 0.5; avgAL = temp;
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temp = inputSampleR;
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inputSampleR = (inputSampleR + avgAR) * 0.5; avgAR = temp;
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inputSampleL *= gainL;
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inputSampleR *= gainR;
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if (inputSampleL > 1.4137166941154) inputSampleL = 1.4137166941154;
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if (inputSampleL < -1.4137166941154) inputSampleL = -1.4137166941154;
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if (inputSampleL > 0.0) inputSampleL = (inputSampleL/2.0)*(2.8274333882308-inputSampleL);
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else inputSampleL = -(inputSampleL/-2.0)*(2.8274333882308+inputSampleL);
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if (inputSampleR > 1.4137166941154) inputSampleR = 1.4137166941154;
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if (inputSampleR < -1.4137166941154) inputSampleR = -1.4137166941154;
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if (inputSampleR > 0.0) inputSampleR = (inputSampleR/2.0)*(2.8274333882308-inputSampleR);
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else inputSampleR = -(inputSampleR/-2.0)*(2.8274333882308+inputSampleR);
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//BigFastSin channel stage
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temp = inputSampleL;
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inputSampleL = (inputSampleL + avgBL) * 0.5; avgBL = temp;
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temp = inputSampleR;
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inputSampleR = (inputSampleR + avgBR) * 0.5; avgBR = temp;
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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 Console0Channel::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 gainControl = (A*0.5)+0.05; //0.0 to 1.0
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int gainBits = 20; //start beyond maximum attenuation
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if (gainControl > 0.0) gainBits = floor(1.0 / gainControl);
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int bitshiftL = gainBits - 3;
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int bitshiftR = gainBits - 3;
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double panControl = (B*2.0)-1.0; //-1.0 to 1.0
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double panAttenuation = (1.0-fabs(panControl));
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int panBits = 20; //start centered
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if (panAttenuation > 0.0) panBits = floor(1.0 / panAttenuation);
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if (panControl > 0.25) bitshiftL += panBits;
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if (panControl < -0.25) bitshiftR += panBits;
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if (bitshiftL < -2) bitshiftL = -2; if (bitshiftL > 17) bitshiftL = 17;
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if (bitshiftR < -2) bitshiftR = -2; if (bitshiftR > 17) bitshiftR = 17;
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double gainL = 1.0;
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double gainR = 1.0;
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switch (bitshiftL)
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{
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case 17: gainL = 0.0; break;
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case 16: gainL = 0.0000152587890625; break;
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case 15: gainL = 0.000030517578125; break;
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case 14: gainL = 0.00006103515625; break;
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case 13: gainL = 0.0001220703125; break;
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case 12: gainL = 0.000244140625; break;
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case 11: gainL = 0.00048828125; break;
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case 10: gainL = 0.0009765625; break;
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case 9: gainL = 0.001953125; break;
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case 8: gainL = 0.00390625; break;
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case 7: gainL = 0.0078125; break;
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case 6: gainL = 0.015625; break;
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case 5: gainL = 0.03125; break;
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case 4: gainL = 0.0625; break;
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case 3: gainL = 0.125; break;
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case 2: gainL = 0.25; break;
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case 1: gainL = 0.5; break;
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case 0: gainL = 1.0; break;
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case -1: gainL = 2.0; break;
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case -2: gainL = 4.0; break;
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}
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switch (bitshiftR)
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{
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case 17: gainR = 0.0; break;
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case 16: gainR = 0.0000152587890625; break;
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case 15: gainR = 0.000030517578125; break;
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case 14: gainR = 0.00006103515625; break;
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case 13: gainR = 0.0001220703125; break;
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case 12: gainR = 0.000244140625; break;
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case 11: gainR = 0.00048828125; break;
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case 10: gainR = 0.0009765625; break;
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case 9: gainR = 0.001953125; break;
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case 8: gainR = 0.00390625; break;
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case 7: gainR = 0.0078125; break;
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case 6: gainR = 0.015625; break;
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case 5: gainR = 0.03125; break;
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case 4: gainR = 0.0625; break;
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case 3: gainR = 0.125; break;
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case 2: gainR = 0.25; break;
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case 1: gainR = 0.5; break;
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case 0: gainR = 1.0; break;
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case -1: gainR = 2.0; break;
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case -2: gainR = 4.0; break;
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}
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double temp;
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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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temp = inputSampleL;
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inputSampleL = (inputSampleL + avgAL) * 0.5; avgAL = temp;
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temp = inputSampleR;
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inputSampleR = (inputSampleR + avgAR) * 0.5; avgAR = temp;
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inputSampleL *= gainL;
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inputSampleR *= gainR;
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if (inputSampleL > 1.4137166941154) inputSampleL = 1.4137166941154;
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if (inputSampleL < -1.4137166941154) inputSampleL = -1.4137166941154;
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if (inputSampleL > 0.0) inputSampleL = (inputSampleL/2.0)*(2.8274333882308-inputSampleL);
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else inputSampleL = -(inputSampleL/-2.0)*(2.8274333882308+inputSampleL);
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if (inputSampleR > 1.4137166941154) inputSampleR = 1.4137166941154;
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if (inputSampleR < -1.4137166941154) inputSampleR = -1.4137166941154;
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if (inputSampleR > 0.0) inputSampleR = (inputSampleR/2.0)*(2.8274333882308-inputSampleR);
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else inputSampleR = -(inputSampleR/-2.0)*(2.8274333882308+inputSampleR);
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//BigFastSin channel stage
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temp = inputSampleL;
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inputSampleL = (inputSampleL + avgBL) * 0.5; avgBL = temp;
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temp = inputSampleR;
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inputSampleR = (inputSampleR + avgBR) * 0.5; avgBR = temp;
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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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