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120 lines
3.9 KiB
C++
Executable file
120 lines
3.9 KiB
C++
Executable file
/* ========================================
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* Console6Buss - Console6Buss.h
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* Copyright (c) airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __Console6Buss_H
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#include "Console6Buss.h"
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#endif
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void Console6Buss::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 gain = A;
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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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if (gain != 1.0) {
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inputSampleL *= gain;
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inputSampleR *= gain;
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}
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//encode/decode courtesy of torridgristle under the MIT license
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//Inverse Square 1-(1-x)^2 and 1-(1-x)^0.5
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//Reformulated using 'Herbie' for better accuracy near zero
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if (inputSampleL > 1.0) inputSampleL = 1.0;
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else if (inputSampleL > 0.0) inputSampleL = inputSampleL / (1.0 + sqrt(1.0 - inputSampleL));
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if (inputSampleL < -1.0) inputSampleL = -1.0;
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else if (inputSampleL < 0.0) inputSampleL = inputSampleL / (sqrt((inputSampleL + 1.0)) + 1.0);
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if (inputSampleR > 1.0) inputSampleR = 1.0;
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else if (inputSampleR > 0.0) inputSampleR = inputSampleR / (1.0 + sqrt(1.0 - inputSampleR));
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if (inputSampleR < -1.0) inputSampleR = -1.0;
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else if (inputSampleR < 0.0) inputSampleR = inputSampleR / (sqrt((inputSampleR + 1.0)) + 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 Console6Buss::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 gain = A;
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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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if (gain != 1.0) {
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inputSampleL *= gain;
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inputSampleR *= gain;
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}
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//encode/decode courtesy of torridgristle under the MIT license
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//Inverse Square 1-(1-x)^2 and 1-(1-x)^0.5
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//Reformulated using 'Herbie' for better accuracy near zero
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if (inputSampleL > 1.0) inputSampleL = 1.0;
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else if (inputSampleL > 0.0) inputSampleL = inputSampleL / (1.0 + sqrt(1.0 - inputSampleL));
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if (inputSampleL < -1.0) inputSampleL = -1.0;
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else if (inputSampleL < 0.0) inputSampleL = inputSampleL / (sqrt((inputSampleL + 1.0)) + 1.0);
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if (inputSampleR > 1.0) inputSampleR = 1.0;
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else if (inputSampleR > 0.0) inputSampleR = inputSampleR / (1.0 + sqrt(1.0 - inputSampleR));
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if (inputSampleR < -1.0) inputSampleR = -1.0;
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else if (inputSampleR < 0.0) inputSampleR = inputSampleR / (sqrt((inputSampleR + 1.0)) + 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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