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airwindows/plugins/WinVST/Console0Channel/Console0ChannelProc.cpp
Christopher Johnson 2693650c72 kChamberAR and others
2023-05-13 16:37:03 -04:00

246 lines
8.7 KiB
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/* ========================================
* Console0Channel - Console0Channel.h
* Copyright (c) airwindows, Airwindows uses the MIT license
* ======================================== */
#ifndef __Console0Channel_H
#include "Console0Channel.h"
#endif
void Console0Channel::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames)
{
float* in1 = inputs[0];
float* in2 = inputs[1];
float* out1 = outputs[0];
float* out2 = outputs[1];
double gainControl = (A*0.5)+0.05; //0.0 to 1.0
int gainBits = 20; //start beyond maximum attenuation
if (gainControl > 0.0) gainBits = floor(1.0 / gainControl);
int bitshiftL = gainBits - 3;
int bitshiftR = gainBits - 3;
double panControl = (B*2.0)-1.0; //-1.0 to 1.0
double panAttenuation = (1.0-fabs(panControl));
int panBits = 20; //start centered
if (panAttenuation > 0.0) panBits = floor(1.0 / panAttenuation);
if (panControl > 0.25) bitshiftL += panBits;
if (panControl < -0.25) bitshiftR += panBits;
if (bitshiftL < -2) bitshiftL = -2; if (bitshiftL > 17) bitshiftL = 17;
if (bitshiftR < -2) bitshiftR = -2; if (bitshiftR > 17) bitshiftR = 17;
double gainL = 1.0;
double gainR = 1.0;
switch (bitshiftL)
{
case 17: gainL = 0.0; break;
case 16: gainL = 0.0000152587890625; break;
case 15: gainL = 0.000030517578125; break;
case 14: gainL = 0.00006103515625; break;
case 13: gainL = 0.0001220703125; break;
case 12: gainL = 0.000244140625; break;
case 11: gainL = 0.00048828125; break;
case 10: gainL = 0.0009765625; break;
case 9: gainL = 0.001953125; break;
case 8: gainL = 0.00390625; break;
case 7: gainL = 0.0078125; break;
case 6: gainL = 0.015625; break;
case 5: gainL = 0.03125; break;
case 4: gainL = 0.0625; break;
case 3: gainL = 0.125; break;
case 2: gainL = 0.25; break;
case 1: gainL = 0.5; break;
case 0: gainL = 1.0; break;
case -1: gainL = 2.0; break;
case -2: gainL = 4.0; break;
}
switch (bitshiftR)
{
case 17: gainR = 0.0; break;
case 16: gainR = 0.0000152587890625; break;
case 15: gainR = 0.000030517578125; break;
case 14: gainR = 0.00006103515625; break;
case 13: gainR = 0.0001220703125; break;
case 12: gainR = 0.000244140625; break;
case 11: gainR = 0.00048828125; break;
case 10: gainR = 0.0009765625; break;
case 9: gainR = 0.001953125; break;
case 8: gainR = 0.00390625; break;
case 7: gainR = 0.0078125; break;
case 6: gainR = 0.015625; break;
case 5: gainR = 0.03125; break;
case 4: gainR = 0.0625; break;
case 3: gainR = 0.125; break;
case 2: gainR = 0.25; break;
case 1: gainR = 0.5; break;
case 0: gainR = 1.0; break;
case -1: gainR = 2.0; break;
case -2: gainR = 4.0; break;
}
double temp;
while (--sampleFrames >= 0)
{
double inputSampleL = *in1;
double inputSampleR = *in2;
if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17;
if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17;
temp = inputSampleL;
inputSampleL = (inputSampleL + avgAL) * 0.5; avgAL = temp;
temp = inputSampleR;
inputSampleR = (inputSampleR + avgAR) * 0.5; avgAR = temp;
inputSampleL *= gainL;
inputSampleR *= gainR;
if (inputSampleL > 1.4137166941154) inputSampleL = 1.4137166941154;
if (inputSampleL < -1.4137166941154) inputSampleL = -1.4137166941154;
if (inputSampleL > 0.0) inputSampleL = (inputSampleL/2.0)*(2.8274333882308-inputSampleL);
else inputSampleL = -(inputSampleL/-2.0)*(2.8274333882308+inputSampleL);
if (inputSampleR > 1.4137166941154) inputSampleR = 1.4137166941154;
if (inputSampleR < -1.4137166941154) inputSampleR = -1.4137166941154;
if (inputSampleR > 0.0) inputSampleR = (inputSampleR/2.0)*(2.8274333882308-inputSampleR);
else inputSampleR = -(inputSampleR/-2.0)*(2.8274333882308+inputSampleR);
//BigFastSin channel stage
temp = inputSampleL;
inputSampleL = (inputSampleL + avgBL) * 0.5; avgBL = temp;
temp = inputSampleR;
inputSampleR = (inputSampleR + avgBR) * 0.5; avgBR = temp;
//begin 32 bit stereo floating point dither
int expon; frexpf((float)inputSampleL, &expon);
fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5;
inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
frexpf((float)inputSampleR, &expon);
fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
//end 32 bit stereo floating point dither
*out1 = inputSampleL;
*out2 = inputSampleR;
in1++;
in2++;
out1++;
out2++;
}
}
void Console0Channel::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames)
{
double* in1 = inputs[0];
double* in2 = inputs[1];
double* out1 = outputs[0];
double* out2 = outputs[1];
double gainControl = (A*0.5)+0.05; //0.0 to 1.0
int gainBits = 20; //start beyond maximum attenuation
if (gainControl > 0.0) gainBits = floor(1.0 / gainControl);
int bitshiftL = gainBits - 3;
int bitshiftR = gainBits - 3;
double panControl = (B*2.0)-1.0; //-1.0 to 1.0
double panAttenuation = (1.0-fabs(panControl));
int panBits = 20; //start centered
if (panAttenuation > 0.0) panBits = floor(1.0 / panAttenuation);
if (panControl > 0.25) bitshiftL += panBits;
if (panControl < -0.25) bitshiftR += panBits;
if (bitshiftL < -2) bitshiftL = -2; if (bitshiftL > 17) bitshiftL = 17;
if (bitshiftR < -2) bitshiftR = -2; if (bitshiftR > 17) bitshiftR = 17;
double gainL = 1.0;
double gainR = 1.0;
switch (bitshiftL)
{
case 17: gainL = 0.0; break;
case 16: gainL = 0.0000152587890625; break;
case 15: gainL = 0.000030517578125; break;
case 14: gainL = 0.00006103515625; break;
case 13: gainL = 0.0001220703125; break;
case 12: gainL = 0.000244140625; break;
case 11: gainL = 0.00048828125; break;
case 10: gainL = 0.0009765625; break;
case 9: gainL = 0.001953125; break;
case 8: gainL = 0.00390625; break;
case 7: gainL = 0.0078125; break;
case 6: gainL = 0.015625; break;
case 5: gainL = 0.03125; break;
case 4: gainL = 0.0625; break;
case 3: gainL = 0.125; break;
case 2: gainL = 0.25; break;
case 1: gainL = 0.5; break;
case 0: gainL = 1.0; break;
case -1: gainL = 2.0; break;
case -2: gainL = 4.0; break;
}
switch (bitshiftR)
{
case 17: gainR = 0.0; break;
case 16: gainR = 0.0000152587890625; break;
case 15: gainR = 0.000030517578125; break;
case 14: gainR = 0.00006103515625; break;
case 13: gainR = 0.0001220703125; break;
case 12: gainR = 0.000244140625; break;
case 11: gainR = 0.00048828125; break;
case 10: gainR = 0.0009765625; break;
case 9: gainR = 0.001953125; break;
case 8: gainR = 0.00390625; break;
case 7: gainR = 0.0078125; break;
case 6: gainR = 0.015625; break;
case 5: gainR = 0.03125; break;
case 4: gainR = 0.0625; break;
case 3: gainR = 0.125; break;
case 2: gainR = 0.25; break;
case 1: gainR = 0.5; break;
case 0: gainR = 1.0; break;
case -1: gainR = 2.0; break;
case -2: gainR = 4.0; break;
}
double temp;
while (--sampleFrames >= 0)
{
double inputSampleL = *in1;
double inputSampleR = *in2;
if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17;
if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17;
temp = inputSampleL;
inputSampleL = (inputSampleL + avgAL) * 0.5; avgAL = temp;
temp = inputSampleR;
inputSampleR = (inputSampleR + avgAR) * 0.5; avgAR = temp;
inputSampleL *= gainL;
inputSampleR *= gainR;
if (inputSampleL > 1.4137166941154) inputSampleL = 1.4137166941154;
if (inputSampleL < -1.4137166941154) inputSampleL = -1.4137166941154;
if (inputSampleL > 0.0) inputSampleL = (inputSampleL/2.0)*(2.8274333882308-inputSampleL);
else inputSampleL = -(inputSampleL/-2.0)*(2.8274333882308+inputSampleL);
if (inputSampleR > 1.4137166941154) inputSampleR = 1.4137166941154;
if (inputSampleR < -1.4137166941154) inputSampleR = -1.4137166941154;
if (inputSampleR > 0.0) inputSampleR = (inputSampleR/2.0)*(2.8274333882308-inputSampleR);
else inputSampleR = -(inputSampleR/-2.0)*(2.8274333882308+inputSampleR);
//BigFastSin channel stage
temp = inputSampleL;
inputSampleL = (inputSampleL + avgBL) * 0.5; avgBL = temp;
temp = inputSampleR;
inputSampleR = (inputSampleR + avgBR) * 0.5; avgBR = temp;
//begin 64 bit stereo floating point dither
//int expon; frexp((double)inputSampleL, &expon);
fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5;
//inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
//frexp((double)inputSampleR, &expon);
fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5;
//inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
//end 64 bit stereo floating point dither
*out1 = inputSampleL;
*out2 = inputSampleR;
in1++;
in2++;
out1++;
out2++;
}
}
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