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https://github.com/airwindows/airwindows.git
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126 lines
3.9 KiB
C++
Executable file
126 lines
3.9 KiB
C++
Executable file
/* ========================================
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* Sinew - Sinew.h
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* Copyright (c) airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __Sinew_H
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#include "Sinew.h"
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#endif
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void Sinew::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 threshSinew = pow((1.0-A),4)/overallscale;
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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 temp = inputSampleL;
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double clamp = inputSampleL - lastSinewL;
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double sinew = threshSinew * cos(lastSinewL*lastSinewL);
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if (clamp > sinew) temp = lastSinewL + sinew;
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if (-clamp > sinew) temp = lastSinewL - sinew;
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inputSampleL = lastSinewL = temp;
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if (lastSinewL > 1.0) lastSinewL = 1.0;
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if (lastSinewL < -1.0) lastSinewL = -1.0;
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temp = inputSampleR;
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clamp = inputSampleR - lastSinewR;
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sinew = threshSinew * cos(lastSinewR*lastSinewR);
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if (clamp > sinew) temp = lastSinewR + sinew;
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if (-clamp > sinew) temp = lastSinewR - sinew;
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inputSampleR = lastSinewR = temp;
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if (lastSinewR > 1.0) lastSinewR = 1.0;
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if (lastSinewR < -1.0) lastSinewR = -1.0;
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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 Sinew::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 threshSinew = pow((1.0-A),4)/overallscale;
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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 temp = inputSampleL;
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double clamp = inputSampleL - lastSinewL;
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double sinew = threshSinew * cos(lastSinewL*lastSinewL);
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if (clamp > sinew) temp = lastSinewL + sinew;
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if (-clamp > sinew) temp = lastSinewL - sinew;
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inputSampleL = lastSinewL = temp;
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if (lastSinewL > 1.0) lastSinewL = 1.0;
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if (lastSinewL < -1.0) lastSinewL = -1.0;
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temp = inputSampleR;
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clamp = inputSampleR - lastSinewR;
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sinew = threshSinew * cos(lastSinewR*lastSinewR);
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if (clamp > sinew) temp = lastSinewR + sinew;
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if (-clamp > sinew) temp = lastSinewR - sinew;
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inputSampleR = lastSinewR = temp;
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if (lastSinewR > 1.0) lastSinewR = 1.0;
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if (lastSinewR < -1.0) lastSinewR = -1.0;
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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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