diff options
Diffstat (limited to 'plugins/MacVST/Loud/source/LoudProc.cpp')
-rwxr-xr-x | plugins/MacVST/Loud/source/LoudProc.cpp | 339 |
1 files changed, 339 insertions, 0 deletions
diff --git a/plugins/MacVST/Loud/source/LoudProc.cpp b/plugins/MacVST/Loud/source/LoudProc.cpp new file mode 100755 index 0000000..8aedede --- /dev/null +++ b/plugins/MacVST/Loud/source/LoudProc.cpp @@ -0,0 +1,339 @@ +/* ======================================== + * Loud - Loud.h + * Copyright (c) 2016 airwindows, All rights reserved + * ======================================== */ + +#ifndef __Loud_H +#include "Loud.h" +#endif + +void Loud::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 boost = pow(A+1.0,5); + float fpTemp; + long double fpOld = 0.618033988749894848204586; //golden ratio! + long double fpNew = 1.0 - fpOld; + double output = B; + double wet = C; + double dry = 1.0-wet; + long double inputSampleL; + long double inputSampleR; + double drySampleL; + double drySampleR; + double clamp; + + while (--sampleFrames >= 0) + { + inputSampleL = *in1; + inputSampleR = *in2; + if (inputSampleL<1.2e-38 && -inputSampleL<1.2e-38) { + static int noisesource = 0; + //this declares a variable before anything else is compiled. It won't keep assigning + //it to 0 for every sample, it's as if the declaration doesn't exist in this context, + //but it lets me add this denormalization fix in a single place rather than updating + //it in three different locations. The variable isn't thread-safe but this is only + //a random seed and we can share it with whatever. + noisesource = noisesource % 1700021; noisesource++; + int residue = noisesource * noisesource; + residue = residue % 170003; residue *= residue; + residue = residue % 17011; residue *= residue; + residue = residue % 1709; residue *= residue; + residue = residue % 173; residue *= residue; + residue = residue % 17; + double applyresidue = residue; + applyresidue *= 0.00000001; + applyresidue *= 0.00000001; + inputSampleL = applyresidue; + } + if (inputSampleR<1.2e-38 && -inputSampleR<1.2e-38) { + static int noisesource = 0; + noisesource = noisesource % 1700021; noisesource++; + int residue = noisesource * noisesource; + residue = residue % 170003; residue *= residue; + residue = residue % 17011; residue *= residue; + residue = residue % 1709; residue *= residue; + residue = residue % 173; residue *= residue; + residue = residue % 17; + double applyresidue = residue; + applyresidue *= 0.00000001; + applyresidue *= 0.00000001; + inputSampleR = applyresidue; + //this denormalization routine produces a white noise at -300 dB which the noise + //shaping will interact with to produce a bipolar output, but the noise is actually + //all positive. That should stop any variables from going denormal, and the routine + //only kicks in if digital black is input. As a final touch, if you save to 24-bit + //the silence will return to being digital black again. + } + drySampleL = inputSampleL; + drySampleR = inputSampleR; + + //begin L + inputSampleL *= boost; + clamp = inputSampleL - lastSampleL; + + if (clamp > 0) + { + inputSampleL = -(inputSampleL - 1.0); + inputSampleL *= 1.2566108; + if (inputSampleL < 0.0) inputSampleL = 0.0; + if (inputSampleL > 3.141527) inputSampleL = 3.141527; + inputSampleL = sin(inputSampleL) * overallscale; + if (clamp > inputSampleL) clamp = inputSampleL; + } + + if (clamp < 0) + { + inputSampleL += 1.0; + inputSampleL *= 1.2566108; + if (inputSampleL < 0.0) inputSampleL = 0.0; + if (inputSampleL > 3.141527) inputSampleL = 3.141527; + inputSampleL = -sin(inputSampleL) * overallscale; + if (clamp < inputSampleL) clamp = inputSampleL; + } + + inputSampleL = lastSampleL + clamp; + lastSampleL = inputSampleL; + //finished L + + //begin R + inputSampleR *= boost; + clamp = inputSampleR - lastSampleR; + + if (clamp > 0) + { + inputSampleR = -(inputSampleR - 1.0); + inputSampleR *= 1.2566108; + if (inputSampleR < 0.0) inputSampleR = 0.0; + if (inputSampleR > 3.141527) inputSampleR = 3.141527; + inputSampleR = sin(inputSampleR) * overallscale; + if (clamp > inputSampleR) clamp = inputSampleR; + } + + if (clamp < 0) + { + inputSampleR += 1.0; + inputSampleR *= 1.2566108; + if (inputSampleR < 0.0) inputSampleR = 0.0; + if (inputSampleR > 3.141527) inputSampleR = 3.141527; + inputSampleR = -sin(inputSampleR) * overallscale; + if (clamp < inputSampleR) clamp = inputSampleR; + } + + inputSampleR = lastSampleR + clamp; + lastSampleR = inputSampleR; + //finished R + + if (output < 1.0) { + inputSampleL *= output; + inputSampleR *= output; + } + if (wet < 1.0) { + inputSampleL = (drySampleL*dry)+(inputSampleL*wet); + inputSampleR = (drySampleR*dry)+(inputSampleR*wet); + } + //nice little output stage template: if we have another scale of floating point + //number, we really don't want to meaninglessly multiply that by 1.0. + + + //noise shaping to 32-bit floating point + if (fpFlip) { + fpTemp = inputSampleL; + fpNShapeLA = (fpNShapeLA*fpOld)+((inputSampleL-fpTemp)*fpNew); + inputSampleL += fpNShapeLA; + fpTemp = inputSampleR; + fpNShapeRA = (fpNShapeRA*fpOld)+((inputSampleR-fpTemp)*fpNew); + inputSampleR += fpNShapeRA; + } + else { + fpTemp = inputSampleL; + fpNShapeLB = (fpNShapeLB*fpOld)+((inputSampleL-fpTemp)*fpNew); + inputSampleL += fpNShapeLB; + fpTemp = inputSampleR; + fpNShapeRB = (fpNShapeRB*fpOld)+((inputSampleR-fpTemp)*fpNew); + inputSampleR += fpNShapeRB; + } + fpFlip = !fpFlip; + //end noise shaping on 32 bit output + + *out1 = inputSampleL; + *out2 = inputSampleR; + + *in1++; + *in2++; + *out1++; + *out2++; + } +} + +void Loud::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 boost = pow(A+1.0,5); + double fpTemp; + long double fpOld = 0.618033988749894848204586; //golden ratio! + long double fpNew = 1.0 - fpOld; + double output = B; + double wet = C; + double dry = 1.0-wet; + long double inputSampleL; + long double inputSampleR; + double drySampleL; + double drySampleR; + double clamp; + + while (--sampleFrames >= 0) + { + inputSampleL = *in1; + inputSampleR = *in2; + if (inputSampleL<1.2e-38 && -inputSampleL<1.2e-38) { + static int noisesource = 0; + //this declares a variable before anything else is compiled. It won't keep assigning + //it to 0 for every sample, it's as if the declaration doesn't exist in this context, + //but it lets me add this denormalization fix in a single place rather than updating + //it in three different locations. The variable isn't thread-safe but this is only + //a random seed and we can share it with whatever. + noisesource = noisesource % 1700021; noisesource++; + int residue = noisesource * noisesource; + residue = residue % 170003; residue *= residue; + residue = residue % 17011; residue *= residue; + residue = residue % 1709; residue *= residue; + residue = residue % 173; residue *= residue; + residue = residue % 17; + double applyresidue = residue; + applyresidue *= 0.00000001; + applyresidue *= 0.00000001; + inputSampleL = applyresidue; + } + if (inputSampleR<1.2e-38 && -inputSampleR<1.2e-38) { + static int noisesource = 0; + noisesource = noisesource % 1700021; noisesource++; + int residue = noisesource * noisesource; + residue = residue % 170003; residue *= residue; + residue = residue % 17011; residue *= residue; + residue = residue % 1709; residue *= residue; + residue = residue % 173; residue *= residue; + residue = residue % 17; + double applyresidue = residue; + applyresidue *= 0.00000001; + applyresidue *= 0.00000001; + inputSampleR = applyresidue; + //this denormalization routine produces a white noise at -300 dB which the noise + //shaping will interact with to produce a bipolar output, but the noise is actually + //all positive. That should stop any variables from going denormal, and the routine + //only kicks in if digital black is input. As a final touch, if you save to 24-bit + //the silence will return to being digital black again. + } + drySampleL = inputSampleL; + drySampleR = inputSampleR; + + //begin L + inputSampleL *= boost; + clamp = inputSampleL - lastSampleL; + + if (clamp > 0) + { + inputSampleL = -(inputSampleL - 1.0); + inputSampleL *= 1.2566108; + if (inputSampleL < 0.0) inputSampleL = 0.0; + if (inputSampleL > 3.141527) inputSampleL = 3.141527; + inputSampleL = sin(inputSampleL) * overallscale; + if (clamp > inputSampleL) clamp = inputSampleL; + } + + if (clamp < 0) + { + inputSampleL += 1.0; + inputSampleL *= 1.2566108; + if (inputSampleL < 0.0) inputSampleL = 0.0; + if (inputSampleL > 3.141527) inputSampleL = 3.141527; + inputSampleL = -sin(inputSampleL) * overallscale; + if (clamp < inputSampleL) clamp = inputSampleL; + } + + inputSampleL = lastSampleL + clamp; + lastSampleL = inputSampleL; + //finished L + + //begin R + inputSampleR *= boost; + clamp = inputSampleR - lastSampleR; + + if (clamp > 0) + { + inputSampleR = -(inputSampleR - 1.0); + inputSampleR *= 1.2566108; + if (inputSampleR < 0.0) inputSampleR = 0.0; + if (inputSampleR > 3.141527) inputSampleR = 3.141527; + inputSampleR = sin(inputSampleR) * overallscale; + if (clamp > inputSampleR) clamp = inputSampleR; + } + + if (clamp < 0) + { + inputSampleR += 1.0; + inputSampleR *= 1.2566108; + if (inputSampleR < 0.0) inputSampleR = 0.0; + if (inputSampleR > 3.141527) inputSampleR = 3.141527; + inputSampleR = -sin(inputSampleR) * overallscale; + if (clamp < inputSampleR) clamp = inputSampleR; + } + + inputSampleR = lastSampleR + clamp; + lastSampleR = inputSampleR; + //finished R + + if (output < 1.0) { + inputSampleL *= output; + inputSampleR *= output; + } + if (wet < 1.0) { + inputSampleL = (drySampleL*dry)+(inputSampleL*wet); + inputSampleR = (drySampleR*dry)+(inputSampleR*wet); + } + //nice little output stage template: if we have another scale of floating point + //number, we really don't want to meaninglessly multiply that by 1.0. + + //noise shaping to 64-bit floating point + if (fpFlip) { + fpTemp = inputSampleL; + fpNShapeLA = (fpNShapeLA*fpOld)+((inputSampleL-fpTemp)*fpNew); + inputSampleL += fpNShapeLA; + fpTemp = inputSampleR; + fpNShapeRA = (fpNShapeRA*fpOld)+((inputSampleR-fpTemp)*fpNew); + inputSampleR += fpNShapeRA; + } + else { + fpTemp = inputSampleL; + fpNShapeLB = (fpNShapeLB*fpOld)+((inputSampleL-fpTemp)*fpNew); + inputSampleL += fpNShapeLB; + fpTemp = inputSampleR; + fpNShapeRB = (fpNShapeRB*fpOld)+((inputSampleR-fpTemp)*fpNew); + inputSampleR += fpNShapeRB; + } + fpFlip = !fpFlip; + //end noise shaping on 64 bit output + + *out1 = inputSampleL; + *out2 = inputSampleR; + + *in1++; + *in2++; + *out1++; + *out2++; + } +}
\ No newline at end of file |