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132 lines
3.7 KiB
C++
Executable file
132 lines
3.7 KiB
C++
Executable file
/* ========================================
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* DitherMeTimbers - DitherMeTimbers.h
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* Copyright (c) 2016 airwindows, Airwindows uses the MIT license
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* ======================================== */
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#ifndef __DitherMeTimbers_H
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#include "DitherMeTimbers.h"
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#endif
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void DitherMeTimbers::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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while (--sampleFrames >= 0)
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{
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double inputSampleL = *in1 * 8388608.0;
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double inputSampleR = *in2 * 8388608.0;
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double outputSampleL;
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double outputSampleR;
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lastSampleL -= (noiseShapingL*0.125);
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lastSampleR -= (noiseShapingR*0.125);
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if ((lastSampleL+lastSampleL) >= (inputSampleL+lastSample2L)) outputSampleL = floor(lastSampleL);
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else outputSampleL = floor(lastSampleL+1.0); //round down or up based on whether it softens treble angles
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if ((lastSampleR+lastSampleR) >= (inputSampleR+lastSample2R)) outputSampleR = floor(lastSampleR);
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else outputSampleR = floor(lastSampleR+1.0); //round down or up based on whether it softens treble angles
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lastSample2L = lastSampleL;
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lastSampleL = inputSampleL; //we retain three samples in a row
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lastSample2R = lastSampleR;
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lastSampleR = inputSampleR; //we retain three samples in a row
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noiseShapingL += outputSampleL;
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noiseShapingL -= lastSampleL;
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noiseShapingR += outputSampleR;
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noiseShapingR -= lastSampleR;
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if (outputSampleL > 8388600.0) {
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outputSampleL = 8388600.0;
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noiseShapingL *= 0.5;
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}
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if (outputSampleR > 8388600.0) {
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outputSampleR = 8388600.0;
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noiseShapingR *= 0.5;
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}
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if (outputSampleL < -8388600.0) {
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outputSampleL = -8388600.0;
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noiseShapingL *= 0.5;
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}
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if (outputSampleR < -8388600.0) {
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outputSampleR = -8388600.0;
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noiseShapingR *= 0.5;
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}
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*out1 = outputSampleL / 8388608.0;
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*out2 = outputSampleR / 8388608.0;
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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 DitherMeTimbers::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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while (--sampleFrames >= 0)
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{
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double inputSampleL = *in1 * 8388608.0;
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double inputSampleR = *in2 * 8388608.0;
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double outputSampleL;
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double outputSampleR;
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lastSampleL -= (noiseShapingL*0.125);
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lastSampleR -= (noiseShapingR*0.125);
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if ((lastSampleL+lastSampleL) >= (inputSampleL+lastSample2L)) outputSampleL = floor(lastSampleL);
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else outputSampleL = floor(lastSampleL+1.0); //round down or up based on whether it softens treble angles
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if ((lastSampleR+lastSampleR) >= (inputSampleR+lastSample2R)) outputSampleR = floor(lastSampleR);
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else outputSampleR = floor(lastSampleR+1.0); //round down or up based on whether it softens treble angles
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lastSample2L = lastSampleL;
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lastSampleL = inputSampleL; //we retain three samples in a row
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lastSample2R = lastSampleR;
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lastSampleR = inputSampleR; //we retain three samples in a row
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noiseShapingL += outputSampleL;
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noiseShapingL -= lastSampleL;
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noiseShapingR += outputSampleR;
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noiseShapingR -= lastSampleR;
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if (outputSampleL > 8388600.0) {
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outputSampleL = 8388600.0;
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noiseShapingL *= 0.5;
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}
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if (outputSampleR > 8388600.0) {
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outputSampleR = 8388600.0;
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noiseShapingR *= 0.5;
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}
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if (outputSampleL < -8388600.0) {
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outputSampleL = -8388600.0;
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noiseShapingL *= 0.5;
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}
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if (outputSampleR < -8388600.0) {
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outputSampleR = -8388600.0;
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noiseShapingR *= 0.5;
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}
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*out1 = outputSampleL / 8388608.0;
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*out2 = outputSampleR / 8388608.0;
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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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