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https://github.com/airwindows/airwindows.git
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184 lines
6.5 KiB
C++
Executable file
184 lines
6.5 KiB
C++
Executable file
/* ========================================
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* Dubly - Dubly.h
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* Copyright (c) 2016 airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __Dubly_H
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#include "Dubly.h"
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#endif
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void Dubly::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 dublyAmount = pow(A,3)*0.16;
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double outlyAmount = pow(A,3)*0.160618;
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double gain = outlyAmount+1.0;
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double iirAmount = 0.4275/overallscale;
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double wet = B;
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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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iirSampleAL = (iirSampleAL * (1.0 - iirAmount)) + (inputSampleL * iirAmount);
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double doubly = inputSampleL - iirSampleAL;
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if (doubly > 1.0) doubly = 1.0; if (doubly < -1.0) doubly = -1.0;
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if (doubly > 0) doubly = log(1.0+(255*fabs(doubly)))/2.40823996531;
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if (doubly < 0) doubly = -log(1.0+(255*fabs(doubly)))/2.40823996531;
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inputSampleL += doubly*dublyAmount;
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iirSampleAR = (iirSampleAR * (1.0 - iirAmount)) + (inputSampleR * iirAmount);
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doubly = inputSampleR - iirSampleAR;
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if (doubly > 1.0) doubly = 1.0; if (doubly < -1.0) doubly = -1.0;
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if (doubly > 0) doubly = log(1.0+(255*fabs(doubly)))/2.40823996531;
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if (doubly < 0) doubly = -log(1.0+(255*fabs(doubly)))/2.40823996531;
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inputSampleR += doubly*dublyAmount;
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//end Dubly encode
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inputSampleL *= gain;
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inputSampleL = sin(inputSampleL);
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inputSampleL /= gain;
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inputSampleR *= gain;
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inputSampleR = sin(inputSampleR);
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inputSampleR /= gain;
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iirSampleBL = (iirSampleBL * (1.0 - iirAmount)) + (inputSampleL * iirAmount);
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doubly = inputSampleL - iirSampleBL;
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if (doubly > 1.0) doubly = 1.0; if (doubly < -1.0) doubly = -1.0;
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if (doubly > 0) doubly = log(1.0+(255*fabs(doubly)))/2.40823996531;
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if (doubly < 0) doubly = -log(1.0+(255*fabs(doubly)))/2.40823996531;
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inputSampleL -= doubly*outlyAmount;
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iirSampleBR = (iirSampleBR * (1.0 - iirAmount)) + (inputSampleR * iirAmount);
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doubly = inputSampleR - iirSampleBR;
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if (doubly > 1.0) doubly = 1.0; if (doubly < -1.0) doubly = -1.0;
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if (doubly > 0) doubly = log(1.0+(255*fabs(doubly)))/2.40823996531;
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if (doubly < 0) doubly = -log(1.0+(255*fabs(doubly)))/2.40823996531;
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inputSampleR -= doubly*outlyAmount;
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//end Dubly decode
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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 Dubly::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 dublyAmount = pow(A,3)*0.16;
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double outlyAmount = pow(A,3)*0.160618;
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double gain = outlyAmount+1.0;
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double iirAmount = 0.4275/overallscale;
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double wet = B;
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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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iirSampleAL = (iirSampleAL * (1.0 - iirAmount)) + (inputSampleL * iirAmount);
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double doubly = inputSampleL - iirSampleAL;
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if (doubly > 1.0) doubly = 1.0; if (doubly < -1.0) doubly = -1.0;
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if (doubly > 0) doubly = log(1.0+(255*fabs(doubly)))/2.40823996531;
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if (doubly < 0) doubly = -log(1.0+(255*fabs(doubly)))/2.40823996531;
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inputSampleL += doubly*dublyAmount;
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iirSampleAR = (iirSampleAR * (1.0 - iirAmount)) + (inputSampleR * iirAmount);
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doubly = inputSampleR - iirSampleAR;
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if (doubly > 1.0) doubly = 1.0; if (doubly < -1.0) doubly = -1.0;
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if (doubly > 0) doubly = log(1.0+(255*fabs(doubly)))/2.40823996531;
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if (doubly < 0) doubly = -log(1.0+(255*fabs(doubly)))/2.40823996531;
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inputSampleR += doubly*dublyAmount;
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//end Dubly encode
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inputSampleL *= gain;
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inputSampleL = sin(inputSampleL);
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inputSampleL /= gain;
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inputSampleR *= gain;
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inputSampleR = sin(inputSampleR);
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inputSampleR /= gain;
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iirSampleBL = (iirSampleBL * (1.0 - iirAmount)) + (inputSampleL * iirAmount);
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doubly = inputSampleL - iirSampleBL;
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if (doubly > 1.0) doubly = 1.0; if (doubly < -1.0) doubly = -1.0;
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if (doubly > 0) doubly = log(1.0+(255*fabs(doubly)))/2.40823996531;
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if (doubly < 0) doubly = -log(1.0+(255*fabs(doubly)))/2.40823996531;
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inputSampleL -= doubly*outlyAmount;
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iirSampleBR = (iirSampleBR * (1.0 - iirAmount)) + (inputSampleR * iirAmount);
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doubly = inputSampleR - iirSampleBR;
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if (doubly > 1.0) doubly = 1.0; if (doubly < -1.0) doubly = -1.0;
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if (doubly > 0) doubly = log(1.0+(255*fabs(doubly)))/2.40823996531;
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if (doubly < 0) doubly = -log(1.0+(255*fabs(doubly)))/2.40823996531;
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inputSampleR -= doubly*outlyAmount;
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//end Dubly decode
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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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