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240 lines
10 KiB
C++
Executable file
240 lines
10 KiB
C++
Executable file
/* ========================================
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* Dynamics2 - Dynamics2.h
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* Copyright (c) airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __Dynamics2_H
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#include "Dynamics2.h"
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#endif
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void Dynamics2::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 bezCThresh = pow(1.0-A, 6.0) * 8.0;
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double bezRez = pow(1.0-B, 8.0) / overallscale;
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double sloRez = pow(1.0-C,12.0) / overallscale;
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sloRez = fmin(fmax(sloRez-(bezRez*0.5),0.00001),1.0);
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bezRez = fmin(fmax(bezRez,0.0001),1.0);
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double gate = pow(pow(D,4.0),sqrt(bezCThresh+1.0));
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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 (fmax(fabs(inputSampleL),fabs(inputSampleR)) > gate+(sloRez*bezGate)) bezGate = ((bezGate*overallscale*3.0)+3.0)*(0.25/overallscale);
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else bezGate = fmax(0.0, bezGate-(sloRez*sloRez));
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if (bezCThresh > 0.0) {
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inputSampleL *= ((bezCThresh*0.5)+1.0);
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inputSampleR *= ((bezCThresh*0.5)+1.0);
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}
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bezCompF[bez_cycle] += bezRez;
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bezCompF[bez_SampL] += (fabs(inputSampleL) * bezRez);
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bezCompF[bez_SampR] += (fabs(inputSampleR) * bezRez);
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bezMaxF = fmax(bezMaxF,fmax(fabs(inputSampleL),fabs(inputSampleR)));
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if (bezCompF[bez_cycle] > 1.0) {
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bezCompF[bez_cycle] -= 1.0;
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if (bezMaxF < gate) bezCompF[bez_SampL] = bezMaxF/gate; //note: SampL is a control voltage,
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if (bezCompF[bez_SampL]<gate) bezCompF[bez_SampL] = 0.0; //not a bipolar audio signal
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bezCompF[bez_CL] = bezCompF[bez_BL];
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bezCompF[bez_BL] = bezCompF[bez_AL];
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bezCompF[bez_AL] = bezCompF[bez_SampL];
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bezCompF[bez_SampL] = 0.0;
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if (bezMaxF < gate) bezCompF[bez_SampR] = bezMaxF/gate; //note: SampR is a control voltage,
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if (bezCompF[bez_SampR]<gate) bezCompF[bez_SampR] = 0.0; //not a bipolar audio signal
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bezCompF[bez_CR] = bezCompF[bez_BR];
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bezCompF[bez_BR] = bezCompF[bez_AR];
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bezCompF[bez_AR] = bezCompF[bez_SampR];
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bezCompF[bez_SampR] = 0.0;
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bezMaxF = 0.0;
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}
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bezCompS[bez_cycle] += sloRez;
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bezCompS[bez_SampL] += (fabs(inputSampleL) * sloRez); //note: SampL is a control voltage
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bezCompS[bez_SampR] += (fabs(inputSampleR) * sloRez); //note: SampR is a control voltage
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if (bezCompS[bez_cycle] > 1.0) {
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bezCompS[bez_cycle] -= 1.0;
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if (bezCompS[bez_SampL]<gate) bezCompS[bez_SampL] = 0.0;
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bezCompS[bez_CL] = bezCompS[bez_BL];
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bezCompS[bez_BL] = bezCompS[bez_AL];
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bezCompS[bez_AL] = bezCompS[bez_SampL];
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bezCompS[bez_SampL] = 0.0;
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if (bezCompS[bez_SampR]<gate) bezCompS[bez_SampR] = 0.0;
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bezCompS[bez_CR] = bezCompS[bez_BR];
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bezCompS[bez_BR] = bezCompS[bez_AR];
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bezCompS[bez_AR] = bezCompS[bez_SampR];
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bezCompS[bez_SampR] = 0.0;
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}
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double CBFL = (bezCompF[bez_CL]*(1.0-bezCompF[bez_cycle]))+(bezCompF[bez_BL]*bezCompF[bez_cycle]);
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double BAFL = (bezCompF[bez_BL]*(1.0-bezCompF[bez_cycle]))+(bezCompF[bez_AL]*bezCompF[bez_cycle]);
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double CBAFL = (bezCompF[bez_BL]+(CBFL*(1.0-bezCompF[bez_cycle]))+(BAFL*bezCompF[bez_cycle]))*0.5;
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double CBSL = (bezCompS[bez_CL]*(1.0-bezCompS[bez_cycle]))+(bezCompS[bez_BL]*bezCompS[bez_cycle]);
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double BASL = (bezCompS[bez_BL]*(1.0-bezCompS[bez_cycle]))+(bezCompS[bez_AL]*bezCompS[bez_cycle]);
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double CBASL = (bezCompS[bez_BL]+(CBSL*(1.0-bezCompS[bez_cycle]))+(BASL*bezCompS[bez_cycle]))*0.5;
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double CBAMax = fmax(CBASL,CBAFL); if (CBAMax > 0.0) CBAMax = 1.0/CBAMax;
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double CBAFade = ((CBASL*-CBAMax)+(CBAFL*CBAMax)+1.0)*0.5;
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if (bezCThresh > 0.0) inputSampleL *= 1.0-(fmin(((CBASL*(1.0-CBAFade))+(CBAFL*CBAFade))*bezCThresh,1.0));
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double CBFR = (bezCompF[bez_CR]*(1.0-bezCompF[bez_cycle]))+(bezCompF[bez_BR]*bezCompF[bez_cycle]);
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double BAFR = (bezCompF[bez_BR]*(1.0-bezCompF[bez_cycle]))+(bezCompF[bez_AR]*bezCompF[bez_cycle]);
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double CBAFR = (bezCompF[bez_BR]+(CBFR*(1.0-bezCompF[bez_cycle]))+(BAFR*bezCompF[bez_cycle]))*0.5;
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double CBSR = (bezCompS[bez_CR]*(1.0-bezCompS[bez_cycle]))+(bezCompS[bez_BR]*bezCompS[bez_cycle]);
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double BASR = (bezCompS[bez_BR]*(1.0-bezCompS[bez_cycle]))+(bezCompS[bez_AR]*bezCompS[bez_cycle]);
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double CBASR = (bezCompS[bez_BR]+(CBSR*(1.0-bezCompS[bez_cycle]))+(BASR*bezCompS[bez_cycle]))*0.5;
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CBAMax = fmax(CBASR,CBAFR); if (CBAMax > 0.0) CBAMax = 1.0/CBAMax;
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CBAFade = ((CBASR*-CBAMax)+(CBAFR*CBAMax)+1.0)*0.5;
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if (bezCThresh > 0.0) inputSampleR *= 1.0-(fmin(((CBASR*(1.0-CBAFade))+(CBAFR*CBAFade))*bezCThresh,1.0));
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if (bezGate < 1.0 && gate > 0.0) {inputSampleL *= bezGate; inputSampleR *= bezGate;}
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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 Dynamics2::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 bezCThresh = pow(1.0-A, 6.0) * 8.0;
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double bezRez = pow(1.0-B, 8.0) / overallscale;
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double sloRez = pow(1.0-C,12.0) / overallscale;
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sloRez = fmin(fmax(sloRez-(bezRez*0.5),0.00001),1.0);
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bezRez = fmin(fmax(bezRez,0.0001),1.0);
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double gate = pow(pow(D,4.0),sqrt(bezCThresh+1.0));
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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 (fmax(fabs(inputSampleL),fabs(inputSampleR)) > gate+(sloRez*bezGate)) bezGate = ((bezGate*overallscale*3.0)+3.0)*(0.25/overallscale);
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else bezGate = fmax(0.0, bezGate-(sloRez*sloRez));
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if (bezCThresh > 0.0) {
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inputSampleL *= ((bezCThresh*0.5)+1.0);
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inputSampleR *= ((bezCThresh*0.5)+1.0);
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}
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bezCompF[bez_cycle] += bezRez;
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bezCompF[bez_SampL] += (fabs(inputSampleL) * bezRez);
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bezCompF[bez_SampR] += (fabs(inputSampleR) * bezRez);
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bezMaxF = fmax(bezMaxF,fmax(fabs(inputSampleL),fabs(inputSampleR)));
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if (bezCompF[bez_cycle] > 1.0) {
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bezCompF[bez_cycle] -= 1.0;
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if (bezMaxF < gate) bezCompF[bez_SampL] = bezMaxF/gate; //note: SampL is a control voltage,
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if (bezCompF[bez_SampL]<gate) bezCompF[bez_SampL] = 0.0; //not a bipolar audio signal
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bezCompF[bez_CL] = bezCompF[bez_BL];
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bezCompF[bez_BL] = bezCompF[bez_AL];
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bezCompF[bez_AL] = bezCompF[bez_SampL];
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bezCompF[bez_SampL] = 0.0;
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if (bezMaxF < gate) bezCompF[bez_SampR] = bezMaxF/gate; //note: SampR is a control voltage,
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if (bezCompF[bez_SampR]<gate) bezCompF[bez_SampR] = 0.0; //not a bipolar audio signal
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bezCompF[bez_CR] = bezCompF[bez_BR];
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bezCompF[bez_BR] = bezCompF[bez_AR];
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bezCompF[bez_AR] = bezCompF[bez_SampR];
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bezCompF[bez_SampR] = 0.0;
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bezMaxF = 0.0;
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}
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bezCompS[bez_cycle] += sloRez;
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bezCompS[bez_SampL] += (fabs(inputSampleL) * sloRez); //note: SampL is a control voltage
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bezCompS[bez_SampR] += (fabs(inputSampleR) * sloRez); //note: SampR is a control voltage
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if (bezCompS[bez_cycle] > 1.0) {
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bezCompS[bez_cycle] -= 1.0;
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if (bezCompS[bez_SampL]<gate) bezCompS[bez_SampL] = 0.0;
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bezCompS[bez_CL] = bezCompS[bez_BL];
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bezCompS[bez_BL] = bezCompS[bez_AL];
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bezCompS[bez_AL] = bezCompS[bez_SampL];
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bezCompS[bez_SampL] = 0.0;
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if (bezCompS[bez_SampR]<gate) bezCompS[bez_SampR] = 0.0;
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bezCompS[bez_CR] = bezCompS[bez_BR];
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bezCompS[bez_BR] = bezCompS[bez_AR];
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bezCompS[bez_AR] = bezCompS[bez_SampR];
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bezCompS[bez_SampR] = 0.0;
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}
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double CBFL = (bezCompF[bez_CL]*(1.0-bezCompF[bez_cycle]))+(bezCompF[bez_BL]*bezCompF[bez_cycle]);
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double BAFL = (bezCompF[bez_BL]*(1.0-bezCompF[bez_cycle]))+(bezCompF[bez_AL]*bezCompF[bez_cycle]);
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double CBAFL = (bezCompF[bez_BL]+(CBFL*(1.0-bezCompF[bez_cycle]))+(BAFL*bezCompF[bez_cycle]))*0.5;
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double CBSL = (bezCompS[bez_CL]*(1.0-bezCompS[bez_cycle]))+(bezCompS[bez_BL]*bezCompS[bez_cycle]);
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double BASL = (bezCompS[bez_BL]*(1.0-bezCompS[bez_cycle]))+(bezCompS[bez_AL]*bezCompS[bez_cycle]);
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double CBASL = (bezCompS[bez_BL]+(CBSL*(1.0-bezCompS[bez_cycle]))+(BASL*bezCompS[bez_cycle]))*0.5;
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double CBAMax = fmax(CBASL,CBAFL); if (CBAMax > 0.0) CBAMax = 1.0/CBAMax;
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double CBAFade = ((CBASL*-CBAMax)+(CBAFL*CBAMax)+1.0)*0.5;
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if (bezCThresh > 0.0) inputSampleL *= 1.0-(fmin(((CBASL*(1.0-CBAFade))+(CBAFL*CBAFade))*bezCThresh,1.0));
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double CBFR = (bezCompF[bez_CR]*(1.0-bezCompF[bez_cycle]))+(bezCompF[bez_BR]*bezCompF[bez_cycle]);
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double BAFR = (bezCompF[bez_BR]*(1.0-bezCompF[bez_cycle]))+(bezCompF[bez_AR]*bezCompF[bez_cycle]);
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double CBAFR = (bezCompF[bez_BR]+(CBFR*(1.0-bezCompF[bez_cycle]))+(BAFR*bezCompF[bez_cycle]))*0.5;
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double CBSR = (bezCompS[bez_CR]*(1.0-bezCompS[bez_cycle]))+(bezCompS[bez_BR]*bezCompS[bez_cycle]);
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double BASR = (bezCompS[bez_BR]*(1.0-bezCompS[bez_cycle]))+(bezCompS[bez_AR]*bezCompS[bez_cycle]);
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double CBASR = (bezCompS[bez_BR]+(CBSR*(1.0-bezCompS[bez_cycle]))+(BASR*bezCompS[bez_cycle]))*0.5;
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CBAMax = fmax(CBASR,CBAFR); if (CBAMax > 0.0) CBAMax = 1.0/CBAMax;
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CBAFade = ((CBASR*-CBAMax)+(CBAFR*CBAMax)+1.0)*0.5;
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if (bezCThresh > 0.0) inputSampleR *= 1.0-(fmin(((CBASR*(1.0-CBAFade))+(CBAFR*CBAFade))*bezCThresh,1.0));
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if (bezGate < 1.0 && gate > 0.0) {inputSampleL *= bezGate; inputSampleR *= bezGate;}
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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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