mirror of
https://github.com/airwindows/airwindows.git
synced 2026-05-15 14:16:00 -06:00
140 lines
4.2 KiB
C++
Executable file
140 lines
4.2 KiB
C++
Executable file
/* ========================================
|
|
* uLawDecode - uLawDecode.h
|
|
* Copyright (c) 2016 airwindows, Airwindows uses the MIT license
|
|
* ======================================== */
|
|
|
|
#ifndef __uLawDecode_H
|
|
#include "uLawDecode.h"
|
|
#endif
|
|
|
|
void uLawDecode::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames)
|
|
{
|
|
float* in1 = inputs[0];
|
|
float* in2 = inputs[1];
|
|
float* out1 = outputs[0];
|
|
float* out2 = outputs[1];
|
|
|
|
double overallscale = 1.0;
|
|
overallscale /= 44100.0;
|
|
overallscale *= getSampleRate();
|
|
|
|
double gain = A;
|
|
double wet = B;
|
|
//removed extra dry variable
|
|
|
|
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;
|
|
double drySampleL = inputSampleL;
|
|
double drySampleR = inputSampleR;
|
|
|
|
if (gain != 1.0) {
|
|
inputSampleL *= gain;
|
|
inputSampleR *= gain;
|
|
}
|
|
|
|
if (inputSampleL > 1.0) inputSampleL = 1.0;
|
|
if (inputSampleL < -1.0) inputSampleL = -1.0;
|
|
|
|
if (inputSampleR > 1.0) inputSampleR = 1.0;
|
|
if (inputSampleR < -1.0) inputSampleR = -1.0;
|
|
|
|
if (inputSampleL > 0) inputSampleL = (pow(256,fabs(inputSampleL))-1.0) / 255;
|
|
if (inputSampleL < 0) inputSampleL = -(pow(256,fabs(inputSampleL))-1.0) / 255;
|
|
|
|
if (inputSampleR > 0) inputSampleR = (pow(256,fabs(inputSampleR))-1.0) / 255;
|
|
if (inputSampleR < 0) inputSampleR = -(pow(256,fabs(inputSampleR))-1.0) / 255;
|
|
|
|
if (wet != 1.0) {
|
|
inputSampleL = (inputSampleL * wet) + (drySampleL * (1.0-wet));
|
|
inputSampleR = (inputSampleR * wet) + (drySampleR * (1.0-wet));
|
|
}
|
|
|
|
//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 uLawDecode::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames)
|
|
{
|
|
double* in1 = inputs[0];
|
|
double* in2 = inputs[1];
|
|
double* out1 = outputs[0];
|
|
double* out2 = outputs[1];
|
|
|
|
double overallscale = 1.0;
|
|
overallscale /= 44100.0;
|
|
overallscale *= getSampleRate();
|
|
|
|
double gain = A;
|
|
double wet = B;
|
|
//removed extra dry variable
|
|
|
|
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;
|
|
double drySampleL = inputSampleL;
|
|
double drySampleR = inputSampleR;
|
|
|
|
if (gain != 1.0) {
|
|
inputSampleL *= gain;
|
|
inputSampleR *= gain;
|
|
}
|
|
|
|
if (inputSampleL > 1.0) inputSampleL = 1.0;
|
|
if (inputSampleL < -1.0) inputSampleL = -1.0;
|
|
|
|
if (inputSampleR > 1.0) inputSampleR = 1.0;
|
|
if (inputSampleR < -1.0) inputSampleR = -1.0;
|
|
|
|
if (inputSampleL > 0) inputSampleL = (pow(256,fabs(inputSampleL))-1.0) / 255;
|
|
if (inputSampleL < 0) inputSampleL = -(pow(256,fabs(inputSampleL))-1.0) / 255;
|
|
|
|
if (inputSampleR > 0) inputSampleR = (pow(256,fabs(inputSampleR))-1.0) / 255;
|
|
if (inputSampleR < 0) inputSampleR = -(pow(256,fabs(inputSampleR))-1.0) / 255;
|
|
|
|
if (wet != 1.0) {
|
|
inputSampleL = (inputSampleL * wet) + (drySampleL * (1.0-wet));
|
|
inputSampleR = (inputSampleR * wet) + (drySampleR * (1.0-wet));
|
|
}
|
|
|
|
//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++;
|
|
}
|
|
}
|