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airwindows/plugins/MacVST/BitDualPan/source/BitDualPanProc.cpp
Christopher Johnson 824cfc024d VerbThic
2025-11-28 16:15:14 -05:00

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/* ========================================
* BitDualPan - BitDualPan.h
* Copyright (c) airwindows, Airwindows uses the MIT license
* ======================================== */
#ifndef __BitDualPan_H
#include "BitDualPan.h"
#endif
void BitDualPan::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 LgainL = 1.0;
double LgainR = 1.0;
switch (bitshiftL)
{
case 17: LgainL = 0.0; break;
case 16: LgainL = 0.0000152587890625; break;
case 15: LgainL = 0.000030517578125; break;
case 14: LgainL = 0.00006103515625; break;
case 13: LgainL = 0.0001220703125; break;
case 12: LgainL = 0.000244140625; break;
case 11: LgainL = 0.00048828125; break;
case 10: LgainL = 0.0009765625; break;
case 9: LgainL = 0.001953125; break;
case 8: LgainL = 0.00390625; break;
case 7: LgainL = 0.0078125; break;
case 6: LgainL = 0.015625; break;
case 5: LgainL = 0.03125; break;
case 4: LgainL = 0.0625; break;
case 3: LgainL = 0.125; break;
case 2: LgainL = 0.25; break;
case 1: LgainL = 0.5; break;
case 0: LgainL = 1.0; break;
case -1: LgainL = 2.0; break;
case -2: LgainL = 4.0; break;
}
switch (bitshiftR)
{
case 17: LgainR = 0.0; break;
case 16: LgainR = 0.0000152587890625; break;
case 15: LgainR = 0.000030517578125; break;
case 14: LgainR = 0.00006103515625; break;
case 13: LgainR = 0.0001220703125; break;
case 12: LgainR = 0.000244140625; break;
case 11: LgainR = 0.00048828125; break;
case 10: LgainR = 0.0009765625; break;
case 9: LgainR = 0.001953125; break;
case 8: LgainR = 0.00390625; break;
case 7: LgainR = 0.0078125; break;
case 6: LgainR = 0.015625; break;
case 5: LgainR = 0.03125; break;
case 4: LgainR = 0.0625; break;
case 3: LgainR = 0.125; break;
case 2: LgainR = 0.25; break;
case 1: LgainR = 0.5; break;
case 0: LgainR = 1.0; break;
case -1: LgainR = 2.0; break;
case -2: LgainR = 4.0; break;
}
gainControl = (C*0.5)+0.05; //0.0 to 1.0
gainBits = 20; //start beyond maximum attenuation
if (gainControl > 0.0) gainBits = floor(1.0 / gainControl);
bitshiftL = gainBits - 3;
bitshiftR = gainBits - 3;
panControl = (D*2.0)-1.0; //-1.0 to 1.0
panAttenuation = (1.0-fabs(panControl));
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 RgainL = 1.0;
double RgainR = 1.0;
switch (bitshiftL)
{
case 17: RgainL = 0.0; break;
case 16: RgainL = 0.0000152587890625; break;
case 15: RgainL = 0.000030517578125; break;
case 14: RgainL = 0.00006103515625; break;
case 13: RgainL = 0.0001220703125; break;
case 12: RgainL = 0.000244140625; break;
case 11: RgainL = 0.00048828125; break;
case 10: RgainL = 0.0009765625; break;
case 9: RgainL = 0.001953125; break;
case 8: RgainL = 0.00390625; break;
case 7: RgainL = 0.0078125; break;
case 6: RgainL = 0.015625; break;
case 5: RgainL = 0.03125; break;
case 4: RgainL = 0.0625; break;
case 3: RgainL = 0.125; break;
case 2: RgainL = 0.25; break;
case 1: RgainL = 0.5; break;
case 0: RgainL = 1.0; break;
case -1: RgainL = 2.0; break;
case -2: RgainL = 4.0; break;
}
switch (bitshiftR)
{
case 17: RgainR = 0.0; break;
case 16: RgainR = 0.0000152587890625; break;
case 15: RgainR = 0.000030517578125; break;
case 14: RgainR = 0.00006103515625; break;
case 13: RgainR = 0.0001220703125; break;
case 12: RgainR = 0.000244140625; break;
case 11: RgainR = 0.00048828125; break;
case 10: RgainR = 0.0009765625; break;
case 9: RgainR = 0.001953125; break;
case 8: RgainR = 0.00390625; break;
case 7: RgainR = 0.0078125; break;
case 6: RgainR = 0.015625; break;
case 5: RgainR = 0.03125; break;
case 4: RgainR = 0.0625; break;
case 3: RgainR = 0.125; break;
case 2: RgainR = 0.25; break;
case 1: RgainR = 0.5; break;
case 0: RgainR = 1.0; break;
case -1: RgainR = 2.0; break;
case -2: RgainR = 4.0; break;
}
while (--sampleFrames >= 0)
{
double monoL = *in1;
double monoR = *in2;
*out1 = (monoL*LgainL)+(monoR*RgainL);
*out2 = (monoL*LgainR)+(monoR*RgainR);
in1++;
in2++;
out1++;
out2++;
}
}
void BitDualPan::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 LgainL = 1.0;
double LgainR = 1.0;
switch (bitshiftL)
{
case 17: LgainL = 0.0; break;
case 16: LgainL = 0.0000152587890625; break;
case 15: LgainL = 0.000030517578125; break;
case 14: LgainL = 0.00006103515625; break;
case 13: LgainL = 0.0001220703125; break;
case 12: LgainL = 0.000244140625; break;
case 11: LgainL = 0.00048828125; break;
case 10: LgainL = 0.0009765625; break;
case 9: LgainL = 0.001953125; break;
case 8: LgainL = 0.00390625; break;
case 7: LgainL = 0.0078125; break;
case 6: LgainL = 0.015625; break;
case 5: LgainL = 0.03125; break;
case 4: LgainL = 0.0625; break;
case 3: LgainL = 0.125; break;
case 2: LgainL = 0.25; break;
case 1: LgainL = 0.5; break;
case 0: LgainL = 1.0; break;
case -1: LgainL = 2.0; break;
case -2: LgainL = 4.0; break;
}
switch (bitshiftR)
{
case 17: LgainR = 0.0; break;
case 16: LgainR = 0.0000152587890625; break;
case 15: LgainR = 0.000030517578125; break;
case 14: LgainR = 0.00006103515625; break;
case 13: LgainR = 0.0001220703125; break;
case 12: LgainR = 0.000244140625; break;
case 11: LgainR = 0.00048828125; break;
case 10: LgainR = 0.0009765625; break;
case 9: LgainR = 0.001953125; break;
case 8: LgainR = 0.00390625; break;
case 7: LgainR = 0.0078125; break;
case 6: LgainR = 0.015625; break;
case 5: LgainR = 0.03125; break;
case 4: LgainR = 0.0625; break;
case 3: LgainR = 0.125; break;
case 2: LgainR = 0.25; break;
case 1: LgainR = 0.5; break;
case 0: LgainR = 1.0; break;
case -1: LgainR = 2.0; break;
case -2: LgainR = 4.0; break;
}
gainControl = (C*0.5)+0.05; //0.0 to 1.0
gainBits = 20; //start beyond maximum attenuation
if (gainControl > 0.0) gainBits = floor(1.0 / gainControl);
bitshiftL = gainBits - 3;
bitshiftR = gainBits - 3;
panControl = (D*2.0)-1.0; //-1.0 to 1.0
panAttenuation = (1.0-fabs(panControl));
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 RgainL = 1.0;
double RgainR = 1.0;
switch (bitshiftL)
{
case 17: RgainL = 0.0; break;
case 16: RgainL = 0.0000152587890625; break;
case 15: RgainL = 0.000030517578125; break;
case 14: RgainL = 0.00006103515625; break;
case 13: RgainL = 0.0001220703125; break;
case 12: RgainL = 0.000244140625; break;
case 11: RgainL = 0.00048828125; break;
case 10: RgainL = 0.0009765625; break;
case 9: RgainL = 0.001953125; break;
case 8: RgainL = 0.00390625; break;
case 7: RgainL = 0.0078125; break;
case 6: RgainL = 0.015625; break;
case 5: RgainL = 0.03125; break;
case 4: RgainL = 0.0625; break;
case 3: RgainL = 0.125; break;
case 2: RgainL = 0.25; break;
case 1: RgainL = 0.5; break;
case 0: RgainL = 1.0; break;
case -1: RgainL = 2.0; break;
case -2: RgainL = 4.0; break;
}
switch (bitshiftR)
{
case 17: RgainR = 0.0; break;
case 16: RgainR = 0.0000152587890625; break;
case 15: RgainR = 0.000030517578125; break;
case 14: RgainR = 0.00006103515625; break;
case 13: RgainR = 0.0001220703125; break;
case 12: RgainR = 0.000244140625; break;
case 11: RgainR = 0.00048828125; break;
case 10: RgainR = 0.0009765625; break;
case 9: RgainR = 0.001953125; break;
case 8: RgainR = 0.00390625; break;
case 7: RgainR = 0.0078125; break;
case 6: RgainR = 0.015625; break;
case 5: RgainR = 0.03125; break;
case 4: RgainR = 0.0625; break;
case 3: RgainR = 0.125; break;
case 2: RgainR = 0.25; break;
case 1: RgainR = 0.5; break;
case 0: RgainR = 1.0; break;
case -1: RgainR = 2.0; break;
case -2: RgainR = 4.0; break;
}
while (--sampleFrames >= 0)
{
double monoL = *in1;
double monoR = *in2;
*out1 = (monoL*LgainL)+(monoR*RgainL);
*out2 = (monoL*LgainR)+(monoR*RgainR);
in1++;
in2++;
out1++;
out2++;
}
}
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