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204 lines
7.2 KiB
C++
Executable file
204 lines
7.2 KiB
C++
Executable file
/* ========================================
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* Dubly2 - Dubly2.h
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* Copyright (c) airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __Dubly2_H
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#include "Dubly2.h"
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#endif
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void Dubly2::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 dublyAmount = pow(A,3)*0.25;
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double iirEncFreq = B/overallscale;
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double tapeDrv = (C*2.0)+1.0;
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double outlyAmount = pow(D,3)*0.25;
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double iirDecFreq = E/overallscale;
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double outPad = (F*2.0)+1.0;
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if (tapeDrv > 1.0) outPad += 0.005;
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double wet = G;
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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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iirEncL = (iirEncL * (1.0 - iirEncFreq)) + (inputSampleL * iirEncFreq);
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iirEncR = (iirEncR * (1.0 - iirEncFreq)) + (inputSampleR * iirEncFreq);
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double doubly = inputSampleL - iirEncL;
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if (doubly > 1.0) doubly = 1.0; if (doubly < -1.0) doubly = -1.0;
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if (doubly > 0) doubly = log(1.0+(255*fabs(doubly)))/2.40823996531;
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if (doubly < 0) doubly = -log(1.0+(255*fabs(doubly)))/2.40823996531;
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inputSampleL += doubly*dublyAmount;
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doubly = inputSampleR - iirEncR;
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if (doubly > 1.0) doubly = 1.0; if (doubly < -1.0) doubly = -1.0;
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if (doubly > 0) doubly = log(1.0+(255*fabs(doubly)))/2.40823996531;
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if (doubly < 0) doubly = -log(1.0+(255*fabs(doubly)))/2.40823996531;
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inputSampleR += doubly*dublyAmount;
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//end Dubly encode
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if (tapeDrv > 1.0) {
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inputSampleL *= tapeDrv;
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inputSampleR *= tapeDrv;
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}
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if (inputSampleL > 1.57079633) inputSampleL = 1.57079633;
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if (inputSampleL < -1.57079633) inputSampleL = -1.57079633;
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inputSampleL = sin(inputSampleL);
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if (inputSampleR > 1.57079633) inputSampleR = 1.57079633;
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if (inputSampleR < -1.57079633) inputSampleR = -1.57079633;
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inputSampleR = sin(inputSampleR);
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if (outPad > 1.0) {
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inputSampleL /= outPad;
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inputSampleR /= outPad;
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}
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iirDecL = (iirDecL * (1.0 - iirDecFreq)) + (inputSampleL * iirDecFreq);
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iirDecR = (iirDecR * (1.0 - iirDecFreq)) + (inputSampleR * iirDecFreq);
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doubly = inputSampleL - iirDecL;
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if (doubly > 1.0) doubly = 1.0; if (doubly < -1.0) doubly = -1.0;
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if (doubly > 0) doubly = log(1.0+(255*fabs(doubly)))/2.40823996531;
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if (doubly < 0) doubly = -log(1.0+(255*fabs(doubly)))/2.40823996531;
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inputSampleL -= doubly*outlyAmount;
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doubly = inputSampleR - iirDecR;
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if (doubly > 1.0) doubly = 1.0; if (doubly < -1.0) doubly = -1.0;
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if (doubly > 0) doubly = log(1.0+(255*fabs(doubly)))/2.40823996531;
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if (doubly < 0) doubly = -log(1.0+(255*fabs(doubly)))/2.40823996531;
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inputSampleR -= doubly*outlyAmount;
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//end Dubly decode
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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 Dubly2::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 dublyAmount = pow(A,3)*0.25;
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double iirEncFreq = B/overallscale;
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double tapeDrv = (C*2.0)+1.0;
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double outlyAmount = pow(D,3)*0.25;
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double iirDecFreq = E/overallscale;
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double outPad = (F*2.0)+1.0;
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if (tapeDrv > 1.0) outPad += 0.005;
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double wet = G;
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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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iirEncL = (iirEncL * (1.0 - iirEncFreq)) + (inputSampleL * iirEncFreq);
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iirEncR = (iirEncR * (1.0 - iirEncFreq)) + (inputSampleR * iirEncFreq);
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double doubly = inputSampleL - iirEncL;
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if (doubly > 1.0) doubly = 1.0; if (doubly < -1.0) doubly = -1.0;
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if (doubly > 0) doubly = log(1.0+(255*fabs(doubly)))/2.40823996531;
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if (doubly < 0) doubly = -log(1.0+(255*fabs(doubly)))/2.40823996531;
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inputSampleL += doubly*dublyAmount;
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doubly = inputSampleR - iirEncR;
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if (doubly > 1.0) doubly = 1.0; if (doubly < -1.0) doubly = -1.0;
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if (doubly > 0) doubly = log(1.0+(255*fabs(doubly)))/2.40823996531;
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if (doubly < 0) doubly = -log(1.0+(255*fabs(doubly)))/2.40823996531;
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inputSampleR += doubly*dublyAmount;
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//end Dubly encode
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if (tapeDrv > 1.0) {
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inputSampleL *= tapeDrv;
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inputSampleR *= tapeDrv;
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}
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if (inputSampleL > 1.57079633) inputSampleL = 1.57079633;
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if (inputSampleL < -1.57079633) inputSampleL = -1.57079633;
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inputSampleL = sin(inputSampleL);
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if (inputSampleR > 1.57079633) inputSampleR = 1.57079633;
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if (inputSampleR < -1.57079633) inputSampleR = -1.57079633;
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inputSampleR = sin(inputSampleR);
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if (outPad > 1.0) {
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inputSampleL /= outPad;
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inputSampleR /= outPad;
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}
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iirDecL = (iirDecL * (1.0 - iirDecFreq)) + (inputSampleL * iirDecFreq);
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iirDecR = (iirDecR * (1.0 - iirDecFreq)) + (inputSampleR * iirDecFreq);
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doubly = inputSampleL - iirDecL;
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if (doubly > 1.0) doubly = 1.0; if (doubly < -1.0) doubly = -1.0;
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if (doubly > 0) doubly = log(1.0+(255*fabs(doubly)))/2.40823996531;
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if (doubly < 0) doubly = -log(1.0+(255*fabs(doubly)))/2.40823996531;
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inputSampleL -= doubly*outlyAmount;
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doubly = inputSampleR - iirDecR;
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if (doubly > 1.0) doubly = 1.0; if (doubly < -1.0) doubly = -1.0;
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if (doubly > 0) doubly = log(1.0+(255*fabs(doubly)))/2.40823996531;
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if (doubly < 0) doubly = -log(1.0+(255*fabs(doubly)))/2.40823996531;
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inputSampleR -= doubly*outlyAmount;
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//end Dubly decode
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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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