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134 lines
4 KiB
C++
Executable file
134 lines
4 KiB
C++
Executable file
/* ========================================
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* SquareRoot - SquareRoot.h
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* Copyright (c) airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __SquareRoot_H
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#include "SquareRoot.h"
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#endif
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void SquareRoot::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 in = A*2.0; in *= in;
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double soar = 0.3-(B*0.3);
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double out = C*2.0; out *= out;
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double wet = D;
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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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if (in !=1.0) {
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inputSampleL *= in;
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inputSampleR *= in;
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}
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double temp = fabs(inputSampleL)+(soar*soar);
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if (inputSampleL > 0.0) inputSampleL = fmax((sqrt(1.0/temp)*temp)-soar,0.0);
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if (inputSampleL < 0.0) inputSampleL = fmin((-sqrt(1.0/temp)*temp)+soar,0.0);
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temp = fabs(inputSampleR)+(soar*soar);
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if (inputSampleR > 0.0) inputSampleR = fmax((sqrt(1.0/temp)*temp)-soar,0.0);
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if (inputSampleR < 0.0) inputSampleR = fmin((-sqrt(1.0/temp)*temp)+soar,0.0);
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if (out !=1.0) {
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inputSampleL *= out;
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inputSampleR *= out;
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}
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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 SquareRoot::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 in = A*2.0; in *= in;
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double soar = 0.3-(B*0.3);
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double out = C*2.0; out *= out;
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double wet = D;
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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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if (in !=1.0) {
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inputSampleL *= in;
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inputSampleR *= in;
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}
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double temp = fabs(inputSampleL)+(soar*soar);
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if (inputSampleL > 0.0) inputSampleL = fmax((sqrt(1.0/temp)*temp)-soar,0.0);
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if (inputSampleL < 0.0) inputSampleL = fmin((-sqrt(1.0/temp)*temp)+soar,0.0);
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temp = fabs(inputSampleR)+(soar*soar);
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if (inputSampleR > 0.0) inputSampleR = fmax((sqrt(1.0/temp)*temp)-soar,0.0);
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if (inputSampleR < 0.0) inputSampleR = fmin((-sqrt(1.0/temp)*temp)+soar,0.0);
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if (out !=1.0) {
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inputSampleL *= out;
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inputSampleR *= out;
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}
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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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