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https://github.com/airwindows/airwindows.git
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142 lines
5.3 KiB
C++
Executable file
142 lines
5.3 KiB
C++
Executable file
/* ========================================
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* Suzan - Suzan.h
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* Copyright (c) airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __Suzan_H
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#include "Suzan.h"
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#endif
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void Suzan::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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freqA = freqB; resoA = resoB; outA = outB;
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freqB = pow(A,overallscale+1.0)*1.22;
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resoB = pow(1.0-B,2.0);
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if (resoB < 0.001) resoB = 0.001; // q of 0.0 is just a tone
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outB = C/sqrt(resoB);
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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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const double temp = (double)sampleFrames/inFramesToProcess;
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const double freq = (freqA*temp)+(freqB*(1.0-temp));
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const double reso = (resoA*temp)+(resoB*(1.0-temp));
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const double out = (outA*temp)+(outB*(1.0-temp)); //dezippering
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lowAL += freq*bandAL; bandAL += freq*((reso*inputSampleL)-lowAL-(reso*bandAL));
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inputSampleL = (lowAL-sin(bandCL*0.5)); //alternate airwindowsizationA
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lowBL += freq*bandBL; bandBL += freq*((reso*inputSampleL)-lowBL-(reso*bandBL));
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inputSampleL = (lowBL-sin(bandAL*0.5)); //alternate airwindowsizationB
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lowCL += freq*bandBL; bandCL += freq*((reso*inputSampleL)-lowCL-(reso*bandCL));
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inputSampleL = (lowCL+sin(bandBL))*out; //alternate airwindowsizationC
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lowAR += freq*bandAR; bandAR += freq*((reso*inputSampleR)-lowAR-(reso*bandAR));
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inputSampleR = (lowAR-sin(bandCR*0.5)); //alternate airwindowsizationA
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lowBR += freq*bandBR; bandBR += freq*((reso*inputSampleR)-lowBR-(reso*bandBR));
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inputSampleR = (lowBR-sin(bandAR*0.5)); //alternate airwindowsizationB
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lowCR += freq*bandBR; bandCR += freq*((reso*inputSampleR)-lowCR-(reso*bandCR));
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inputSampleR = (lowCR+sin(bandBR))*out; //alternate airwindowsizationC
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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 Suzan::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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freqA = freqB; resoA = resoB; outA = outB;
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freqB = pow(A,overallscale+1.0)*1.22;
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resoB = pow(1.0-B,2.0);
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if (resoB < 0.001) resoB = 0.001; // q of 0.0 is just a tone
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outB = C/sqrt(resoB);
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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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const double temp = (double)sampleFrames/inFramesToProcess;
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const double freq = (freqA*temp)+(freqB*(1.0-temp));
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const double reso = (resoA*temp)+(resoB*(1.0-temp));
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const double out = (outA*temp)+(outB*(1.0-temp)); //dezippering
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lowAL += freq*bandAL; bandAL += freq*((reso*inputSampleL)-lowAL-(reso*bandAL));
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inputSampleL = (lowAL-sin(bandCL*0.5)); //alternate airwindowsizationA
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lowBL += freq*bandBL; bandBL += freq*((reso*inputSampleL)-lowBL-(reso*bandBL));
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inputSampleL = (lowBL-sin(bandAL*0.5)); //alternate airwindowsizationB
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lowCL += freq*bandBL; bandCL += freq*((reso*inputSampleL)-lowCL-(reso*bandCL));
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inputSampleL = (lowCL+sin(bandBL))*out; //alternate airwindowsizationC
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lowAR += freq*bandAR; bandAR += freq*((reso*inputSampleR)-lowAR-(reso*bandAR));
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inputSampleR = (lowAR-sin(bandCR*0.5)); //alternate airwindowsizationA
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lowBR += freq*bandBR; bandBR += freq*((reso*inputSampleR)-lowBR-(reso*bandBR));
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inputSampleR = (lowBR-sin(bandAR*0.5)); //alternate airwindowsizationB
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lowCR += freq*bandBR; bandCR += freq*((reso*inputSampleR)-lowCR-(reso*bandCR));
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inputSampleR = (lowCR+sin(bandBR))*out; //alternate airwindowsizationC
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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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