mirror of
https://github.com/airwindows/airwindows.git
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274 lines
No EOL
10 KiB
C++
Executable file
274 lines
No EOL
10 KiB
C++
Executable file
/* ========================================
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* C5RawChannel - C5RawChannel.h
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* Copyright (c) 2016 airwindows, All rights reserved
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* ======================================== */
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#ifndef __C5RawChannel_H
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#include "C5RawChannel.h"
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#endif
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void C5RawChannel::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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float fpTemp;
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long double fpOld = 0.618033988749894848204586; //golden ratio!
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long double fpNew = 1.0 - fpOld;
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long double centering = A * 0.5;
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centering = 1.0 - pow(centering,5);
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//we can set our centering force from zero to rather high, but
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//there's a really intense taper on it forcing it to mostly be almost 1.0.
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//If it's literally 1.0, we don't even apply it, and you get the original
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//Xmas Morning bugged-out Console5, which is the default setting for Raw Console5.
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double differenceL;
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double differenceR;
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long double inputSampleL;
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long double inputSampleR;
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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 (inputSampleL<1.2e-38 && -inputSampleL<1.2e-38) {
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static int noisesource = 0;
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//this declares a variable before anything else is compiled. It won't keep assigning
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//it to 0 for every sample, it's as if the declaration doesn't exist in this context,
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//but it lets me add this denormalization fix in a single place rather than updating
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//it in three different locations. The variable isn't thread-safe but this is only
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//a random seed and we can share it with whatever.
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noisesource = noisesource % 1700021; noisesource++;
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int residue = noisesource * noisesource;
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residue = residue % 170003; residue *= residue;
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residue = residue % 17011; residue *= residue;
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residue = residue % 1709; residue *= residue;
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residue = residue % 173; residue *= residue;
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residue = residue % 17;
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double applyresidue = residue;
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applyresidue *= 0.00000001;
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applyresidue *= 0.00000001;
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inputSampleL = applyresidue;
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}
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if (inputSampleR<1.2e-38 && -inputSampleR<1.2e-38) {
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static int noisesource = 0;
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noisesource = noisesource % 1700021; noisesource++;
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int residue = noisesource * noisesource;
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residue = residue % 170003; residue *= residue;
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residue = residue % 17011; residue *= residue;
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residue = residue % 1709; residue *= residue;
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residue = residue % 173; residue *= residue;
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residue = residue % 17;
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double applyresidue = residue;
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applyresidue *= 0.00000001;
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applyresidue *= 0.00000001;
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inputSampleR = applyresidue;
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//this denormalization routine produces a white noise at -300 dB which the noise
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//shaping will interact with to produce a bipolar output, but the noise is actually
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//all positive. That should stop any variables from going denormal, and the routine
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//only kicks in if digital black is input. As a final touch, if you save to 24-bit
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//the silence will return to being digital black again.
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}
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differenceL = lastSampleChannelL - inputSampleL;
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lastSampleChannelL = inputSampleL;
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//derive slew part off direct sample measurement + from last time
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differenceR = lastSampleChannelR - inputSampleR;
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lastSampleChannelR = inputSampleR;
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//derive slew part off direct sample measurement + from last time
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if (differenceL > 1.0) differenceL = 1.0;
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if (differenceL < -1.0) differenceL = -1.0;
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if (differenceR > 1.0) differenceR = 1.0;
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if (differenceR < -1.0) differenceR = -1.0;
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inputSampleL = lastFXChannelL + asin(differenceL);
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lastFXChannelL = inputSampleL;
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if (centering < 1.0) lastFXChannelL *= centering;
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//if we're using the crude centering force, it's applied here
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inputSampleR = lastFXChannelR + asin(differenceR);
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lastFXChannelR = inputSampleR;
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if (centering < 1.0) lastFXChannelR *= centering;
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//if we're using the crude centering force, it's applied here
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if (lastFXChannelL > 1.0) lastFXChannelL = 1.0;
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if (lastFXChannelL < -1.0) lastFXChannelL = -1.0;
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if (lastFXChannelR > 1.0) lastFXChannelR = 1.0;
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if (lastFXChannelR < -1.0) lastFXChannelR = -1.0;
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//build new signal off what was present in output last time
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//slew aspect
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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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//amplitude aspect
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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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//amplitude aspect
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//noise shaping to 32-bit floating point
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if (fpFlip) {
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fpTemp = inputSampleL;
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fpNShapeLA = (fpNShapeLA*fpOld)+((inputSampleL-fpTemp)*fpNew);
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inputSampleL += fpNShapeLA;
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fpTemp = inputSampleR;
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fpNShapeRA = (fpNShapeRA*fpOld)+((inputSampleR-fpTemp)*fpNew);
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inputSampleR += fpNShapeRA;
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}
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else {
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fpTemp = inputSampleL;
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fpNShapeLB = (fpNShapeLB*fpOld)+((inputSampleL-fpTemp)*fpNew);
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inputSampleL += fpNShapeLB;
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fpTemp = inputSampleR;
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fpNShapeRB = (fpNShapeRB*fpOld)+((inputSampleR-fpTemp)*fpNew);
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inputSampleR += fpNShapeRB;
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}
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fpFlip = !fpFlip;
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//end noise shaping on 32 bit output
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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 C5RawChannel::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 fpTemp;
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long double fpOld = 0.618033988749894848204586; //golden ratio!
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long double fpNew = 1.0 - fpOld;
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long double centering = A * 0.5;
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centering = 1.0 - pow(centering,5);
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//we can set our centering force from zero to rather high, but
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//there's a really intense taper on it forcing it to mostly be almost 1.0.
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//If it's literally 1.0, we don't even apply it, and you get the original
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//Xmas Morning bugged-out Console5, which is the default setting for Raw Console5.
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double differenceL;
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double differenceR;
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long double inputSampleL;
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long double inputSampleR;
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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 (inputSampleL<1.2e-38 && -inputSampleL<1.2e-38) {
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static int noisesource = 0;
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//this declares a variable before anything else is compiled. It won't keep assigning
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//it to 0 for every sample, it's as if the declaration doesn't exist in this context,
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//but it lets me add this denormalization fix in a single place rather than updating
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//it in three different locations. The variable isn't thread-safe but this is only
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//a random seed and we can share it with whatever.
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noisesource = noisesource % 1700021; noisesource++;
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int residue = noisesource * noisesource;
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residue = residue % 170003; residue *= residue;
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residue = residue % 17011; residue *= residue;
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residue = residue % 1709; residue *= residue;
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residue = residue % 173; residue *= residue;
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residue = residue % 17;
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double applyresidue = residue;
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applyresidue *= 0.00000001;
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applyresidue *= 0.00000001;
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inputSampleL = applyresidue;
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}
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if (inputSampleR<1.2e-38 && -inputSampleR<1.2e-38) {
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static int noisesource = 0;
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noisesource = noisesource % 1700021; noisesource++;
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int residue = noisesource * noisesource;
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residue = residue % 170003; residue *= residue;
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residue = residue % 17011; residue *= residue;
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residue = residue % 1709; residue *= residue;
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residue = residue % 173; residue *= residue;
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residue = residue % 17;
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double applyresidue = residue;
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applyresidue *= 0.00000001;
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applyresidue *= 0.00000001;
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inputSampleR = applyresidue;
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//this denormalization routine produces a white noise at -300 dB which the noise
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//shaping will interact with to produce a bipolar output, but the noise is actually
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//all positive. That should stop any variables from going denormal, and the routine
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//only kicks in if digital black is input. As a final touch, if you save to 24-bit
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//the silence will return to being digital black again.
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}
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differenceL = lastSampleChannelL - inputSampleL;
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lastSampleChannelL = inputSampleL;
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//derive slew part off direct sample measurement + from last time
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differenceR = lastSampleChannelR - inputSampleR;
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lastSampleChannelR = inputSampleR;
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//derive slew part off direct sample measurement + from last time
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if (differenceL > 1.0) differenceL = 1.0;
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if (differenceL < -1.0) differenceL = -1.0;
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if (differenceR > 1.0) differenceR = 1.0;
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if (differenceR < -1.0) differenceR = -1.0;
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inputSampleL = lastFXChannelL + asin(differenceL);
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lastFXChannelL = inputSampleL;
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if (centering < 1.0) lastFXChannelL *= centering;
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//if we're using the crude centering force, it's applied here
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inputSampleR = lastFXChannelR + asin(differenceR);
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lastFXChannelR = inputSampleR;
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if (centering < 1.0) lastFXChannelR *= centering;
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//if we're using the crude centering force, it's applied here
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if (lastFXChannelL > 1.0) lastFXChannelL = 1.0;
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if (lastFXChannelL < -1.0) lastFXChannelL = -1.0;
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if (lastFXChannelR > 1.0) lastFXChannelR = 1.0;
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if (lastFXChannelR < -1.0) lastFXChannelR = -1.0;
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//build new signal off what was present in output last time
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//slew aspect
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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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//amplitude aspect
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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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//amplitude aspect
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//noise shaping to 64-bit floating point
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if (fpFlip) {
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fpTemp = inputSampleL;
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fpNShapeLA = (fpNShapeLA*fpOld)+((inputSampleL-fpTemp)*fpNew);
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inputSampleL += fpNShapeLA;
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fpTemp = inputSampleR;
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fpNShapeRA = (fpNShapeRA*fpOld)+((inputSampleR-fpTemp)*fpNew);
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inputSampleR += fpNShapeRA;
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}
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else {
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fpTemp = inputSampleL;
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fpNShapeLB = (fpNShapeLB*fpOld)+((inputSampleL-fpTemp)*fpNew);
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inputSampleL += fpNShapeLB;
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fpTemp = inputSampleR;
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fpNShapeRB = (fpNShapeRB*fpOld)+((inputSampleR-fpTemp)*fpNew);
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inputSampleR += fpNShapeRB;
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}
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fpFlip = !fpFlip;
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//end noise shaping on 64 bit output
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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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} |