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128 lines
4.6 KiB
C++
Executable file
128 lines
4.6 KiB
C++
Executable file
/* ========================================
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* Overheads - Overheads.h
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* Copyright (c) airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __Overheads_H
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#include "Overheads.h"
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#endif
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void Overheads::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 ovhTrim = pow(A,3);
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ovhTrim += 1.0; ovhTrim *= ovhTrim;
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int offset = (pow(B,7) * 16.0 * overallscale)+1;
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double wet = C;
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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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//begin Overheads compressor
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inputSampleL *= ovhTrim; inputSampleR *= ovhTrim;
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ovhCount--; if (ovhCount < 0 || ovhCount > 128) ovhCount = 128; ovhL[ovhCount] = inputSampleL; ovhR[ovhCount] = inputSampleR;
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double ovhClamp = sin(fabs(inputSampleL - ovhL[(ovhCount+offset)-(((ovhCount+offset) > 128)?129:0)])*(ovhTrim-1.0)*64.0);
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ovhGain *= (1.0 - ovhClamp); ovhGain += ((1.0-ovhClamp) * ovhClamp);
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ovhClamp = sin(fabs(inputSampleR - ovhR[(ovhCount+offset)-(((ovhCount+offset) > 128)?129:0)])*(ovhTrim-1.0)*64.0);
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ovhGain *= (1.0 - ovhClamp); ovhGain += ((1.0-ovhClamp) * ovhClamp);
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if (ovhGain > 1.0) ovhGain = 1.0; if (ovhGain < 0.0) ovhGain = 0.0;
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inputSampleL *= ovhGain; inputSampleR *= ovhGain;
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//end Overheads compressor
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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 Overheads::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 ovhTrim = pow(A,3);
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ovhTrim += 1.0; ovhTrim *= ovhTrim;
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int offset = (pow(B,7) * 16.0 * overallscale)+1;
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double wet = C;
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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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//begin Overheads compressor
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inputSampleL *= ovhTrim; inputSampleR *= ovhTrim;
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ovhCount--; if (ovhCount < 0 || ovhCount > 128) ovhCount = 128; ovhL[ovhCount] = inputSampleL; ovhR[ovhCount] = inputSampleR;
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double ovhClamp = sin(fabs(inputSampleL - ovhL[(ovhCount+offset)-(((ovhCount+offset) > 128)?129:0)])*(ovhTrim-1.0)*64.0);
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ovhGain *= (1.0 - ovhClamp); ovhGain += ((1.0-ovhClamp) * ovhClamp);
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ovhClamp = sin(fabs(inputSampleR - ovhR[(ovhCount+offset)-(((ovhCount+offset) > 128)?129:0)])*(ovhTrim-1.0)*64.0);
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ovhGain *= (1.0 - ovhClamp); ovhGain += ((1.0-ovhClamp) * ovhClamp);
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if (ovhGain > 1.0) ovhGain = 1.0; if (ovhGain < 0.0) ovhGain = 0.0;
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inputSampleL *= ovhGain; inputSampleR *= ovhGain;
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//end Overheads compressor
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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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