mirror of
https://github.com/airwindows/airwindows.git
synced 2026-05-15 14:16:00 -06:00
259 lines
No EOL
9.5 KiB
C++
Executable file
259 lines
No EOL
9.5 KiB
C++
Executable file
/* ========================================
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* Average - Average.h
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* Copyright (c) 2016 airwindows, All rights reserved
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* ======================================== */
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#ifndef __Average_H
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#include "Average.h"
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#endif
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void Average::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 correctionSample;
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double accumulatorSampleL;
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double accumulatorSampleR;
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double drySampleL;
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double drySampleR;
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double inputSampleL;
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double inputSampleR;
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double overallscale = (A * 9.0)+1.0;
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double wet = B;
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//removed extra dry variable
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double gain = overallscale;
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if (gain > 1.0) {f[0] = 1.0; gain -= 1.0;} else {f[0] = gain; gain = 0.0;}
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if (gain > 1.0) {f[1] = 1.0; gain -= 1.0;} else {f[1] = gain; gain = 0.0;}
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if (gain > 1.0) {f[2] = 1.0; gain -= 1.0;} else {f[2] = gain; gain = 0.0;}
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if (gain > 1.0) {f[3] = 1.0; gain -= 1.0;} else {f[3] = gain; gain = 0.0;}
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if (gain > 1.0) {f[4] = 1.0; gain -= 1.0;} else {f[4] = gain; gain = 0.0;}
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if (gain > 1.0) {f[5] = 1.0; gain -= 1.0;} else {f[5] = gain; gain = 0.0;}
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if (gain > 1.0) {f[6] = 1.0; gain -= 1.0;} else {f[6] = gain; gain = 0.0;}
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if (gain > 1.0) {f[7] = 1.0; gain -= 1.0;} else {f[7] = gain; gain = 0.0;}
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if (gain > 1.0) {f[8] = 1.0; gain -= 1.0;} else {f[8] = gain; gain = 0.0;}
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if (gain > 1.0) {f[9] = 1.0; gain -= 1.0;} else {f[9] = gain; gain = 0.0;}
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//there, now we have a neat little moving average with remainders
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if (overallscale < 1.0) overallscale = 1.0;
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f[0] /= overallscale;
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f[1] /= overallscale;
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f[2] /= overallscale;
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f[3] /= overallscale;
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f[4] /= overallscale;
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f[5] /= overallscale;
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f[6] /= overallscale;
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f[7] /= overallscale;
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f[8] /= overallscale;
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f[9] /= overallscale;
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//and now it's neatly scaled, too
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while (--sampleFrames >= 0)
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{
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inputSampleL = *in1;
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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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drySampleL = inputSampleL;
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drySampleR = inputSampleR;
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bL[9] = bL[8]; bL[8] = bL[7]; bL[7] = bL[6]; bL[6] = bL[5];
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bL[5] = bL[4]; bL[4] = bL[3]; bL[3] = bL[2]; bL[2] = bL[1];
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bL[1] = bL[0]; bL[0] = accumulatorSampleL = inputSampleL;
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bR[9] = bR[8]; bR[8] = bR[7]; bR[7] = bR[6]; bR[6] = bR[5];
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bR[5] = bR[4]; bR[4] = bR[3]; bR[3] = bR[2]; bR[2] = bR[1];
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bR[1] = bR[0]; bR[0] = accumulatorSampleR = inputSampleR;
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//primitive way of doing this: for larger batches of samples, you might
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//try using a circular buffer like in a reverb. If you add the new sample
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//and subtract the one on the end you can keep a running tally of the samples
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//between. Beware of tiny floating-point math errors eventually screwing up
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//your system, though!
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accumulatorSampleL *= f[0];
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accumulatorSampleL += (bL[1] * f[1]);
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accumulatorSampleL += (bL[2] * f[2]);
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accumulatorSampleL += (bL[3] * f[3]);
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accumulatorSampleL += (bL[4] * f[4]);
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accumulatorSampleL += (bL[5] * f[5]);
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accumulatorSampleL += (bL[6] * f[6]);
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accumulatorSampleL += (bL[7] * f[7]);
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accumulatorSampleL += (bL[8] * f[8]);
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accumulatorSampleL += (bL[9] * f[9]);
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accumulatorSampleR *= f[0];
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accumulatorSampleR += (bR[1] * f[1]);
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accumulatorSampleR += (bR[2] * f[2]);
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accumulatorSampleR += (bR[3] * f[3]);
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accumulatorSampleR += (bR[4] * f[4]);
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accumulatorSampleR += (bR[5] * f[5]);
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accumulatorSampleR += (bR[6] * f[6]);
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accumulatorSampleR += (bR[7] * f[7]);
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accumulatorSampleR += (bR[8] * f[8]);
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accumulatorSampleR += (bR[9] * f[9]);
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//we are doing our repetitive calculations on a separate value
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correctionSample = inputSampleL - accumulatorSampleL;
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//we're gonna apply the total effect of all these calculations as a single subtract
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inputSampleL -= correctionSample;
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correctionSample = inputSampleR - accumulatorSampleR;
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inputSampleR -= correctionSample;
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//our one math operation on the input data coming in
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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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//dry/wet control only applies if you're using it. We don't do a multiply by 1.0
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//if it 'won't change anything' but our sample might be at a very different scaling
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//in the floating point system.
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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 Average::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 correctionSample;
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double accumulatorSampleL;
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double accumulatorSampleR;
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double drySampleL;
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double drySampleR;
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double inputSampleL;
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double inputSampleR;
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double overallscale = (A * 9.0)+1.0;
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double wet = B;
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//removed extra dry variable
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double gain = overallscale;
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if (gain > 1.0) {f[0] = 1.0; gain -= 1.0;} else {f[0] = gain; gain = 0.0;}
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if (gain > 1.0) {f[1] = 1.0; gain -= 1.0;} else {f[1] = gain; gain = 0.0;}
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if (gain > 1.0) {f[2] = 1.0; gain -= 1.0;} else {f[2] = gain; gain = 0.0;}
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if (gain > 1.0) {f[3] = 1.0; gain -= 1.0;} else {f[3] = gain; gain = 0.0;}
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if (gain > 1.0) {f[4] = 1.0; gain -= 1.0;} else {f[4] = gain; gain = 0.0;}
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if (gain > 1.0) {f[5] = 1.0; gain -= 1.0;} else {f[5] = gain; gain = 0.0;}
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if (gain > 1.0) {f[6] = 1.0; gain -= 1.0;} else {f[6] = gain; gain = 0.0;}
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if (gain > 1.0) {f[7] = 1.0; gain -= 1.0;} else {f[7] = gain; gain = 0.0;}
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if (gain > 1.0) {f[8] = 1.0; gain -= 1.0;} else {f[8] = gain; gain = 0.0;}
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if (gain > 1.0) {f[9] = 1.0; gain -= 1.0;} else {f[9] = gain; gain = 0.0;}
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//there, now we have a neat little moving average with remainders
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if (overallscale < 1.0) overallscale = 1.0;
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f[0] /= overallscale;
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f[1] /= overallscale;
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f[2] /= overallscale;
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f[3] /= overallscale;
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f[4] /= overallscale;
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f[5] /= overallscale;
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f[6] /= overallscale;
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f[7] /= overallscale;
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f[8] /= overallscale;
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f[9] /= overallscale;
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//and now it's neatly scaled, too
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while (--sampleFrames >= 0)
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{
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inputSampleL = *in1;
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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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drySampleL = inputSampleL;
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drySampleR = inputSampleR;
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bL[9] = bL[8]; bL[8] = bL[7]; bL[7] = bL[6]; bL[6] = bL[5];
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bL[5] = bL[4]; bL[4] = bL[3]; bL[3] = bL[2]; bL[2] = bL[1];
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bL[1] = bL[0]; bL[0] = accumulatorSampleL = inputSampleL;
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bR[9] = bR[8]; bR[8] = bR[7]; bR[7] = bR[6]; bR[6] = bR[5];
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bR[5] = bR[4]; bR[4] = bR[3]; bR[3] = bR[2]; bR[2] = bR[1];
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bR[1] = bR[0]; bR[0] = accumulatorSampleR = inputSampleR;
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//primitive way of doing this: for larger batches of samples, you might
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//try using a circular buffer like in a reverb. If you add the new sample
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//and subtract the one on the end you can keep a running tally of the samples
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//between. Beware of tiny floating-point math errors eventually screwing up
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//your system, though!
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accumulatorSampleL *= f[0];
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accumulatorSampleL += (bL[1] * f[1]);
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accumulatorSampleL += (bL[2] * f[2]);
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accumulatorSampleL += (bL[3] * f[3]);
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accumulatorSampleL += (bL[4] * f[4]);
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accumulatorSampleL += (bL[5] * f[5]);
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accumulatorSampleL += (bL[6] * f[6]);
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accumulatorSampleL += (bL[7] * f[7]);
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accumulatorSampleL += (bL[8] * f[8]);
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accumulatorSampleL += (bL[9] * f[9]);
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accumulatorSampleR *= f[0];
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accumulatorSampleR += (bR[1] * f[1]);
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accumulatorSampleR += (bR[2] * f[2]);
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accumulatorSampleR += (bR[3] * f[3]);
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accumulatorSampleR += (bR[4] * f[4]);
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accumulatorSampleR += (bR[5] * f[5]);
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accumulatorSampleR += (bR[6] * f[6]);
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accumulatorSampleR += (bR[7] * f[7]);
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accumulatorSampleR += (bR[8] * f[8]);
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accumulatorSampleR += (bR[9] * f[9]);
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//we are doing our repetitive calculations on a separate value
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correctionSample = inputSampleL - accumulatorSampleL;
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//we're gonna apply the total effect of all these calculations as a single subtract
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inputSampleL -= correctionSample;
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correctionSample = inputSampleR - accumulatorSampleR;
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inputSampleR -= correctionSample;
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//our one math operation on the input data coming in
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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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//dry/wet control only applies if you're using it. We don't do a multiply by 1.0
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//if it 'won't change anything' but our sample might be at a very different scaling
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//in the floating point system.
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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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} |