diff options
Diffstat (limited to 'plugins/WinVST/SurgeTide/SurgeTideProc.cpp')
| -rwxr-xr-x | plugins/WinVST/SurgeTide/SurgeTideProc.cpp | 278 |
1 files changed, 278 insertions, 0 deletions
diff --git a/plugins/WinVST/SurgeTide/SurgeTideProc.cpp b/plugins/WinVST/SurgeTide/SurgeTideProc.cpp new file mode 100755 index 0000000..2fc6a1a --- /dev/null +++ b/plugins/WinVST/SurgeTide/SurgeTideProc.cpp @@ -0,0 +1,278 @@ +/* ======================================== + * SurgeTide - SurgeTide.h + * Copyright (c) 2016 airwindows, All rights reserved + * ======================================== */ + +#ifndef __SurgeTide_H +#include "SurgeTide.h" +#endif + +void SurgeTide::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(); + float fpTemp; + long double fpOld = 0.618033988749894848204586; //golden ratio! + long double fpNew = 1.0 - fpOld; + + long double inputSampleL; + long double inputSampleR; + long double drySampleL; + long double drySampleR; + + double intensity = A; + double attack = ((B+0.1)*0.0005)/overallscale; + double decay = ((B+0.001)*0.00005)/overallscale; + double wet = C; + double dry = 1.0 - wet; + double inputSense; + + 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; + + inputSampleL *= 8.0; + inputSampleR *= 8.0; + inputSampleL *= intensity; + inputSampleR *= intensity; + + inputSense = fabs(inputSampleL); + if (fabs(inputSampleR) > inputSense) + inputSense = fabs(inputSampleR); + + if (chaseC < inputSense) chaseA += attack; + if (chaseC > inputSense) chaseA -= decay; + + if (chaseA > decay) chaseA = decay; + if (chaseA < -attack) chaseA = -attack; + + chaseB += (chaseA/overallscale); + + if (chaseB > decay) chaseB = decay; + if (chaseB < -attack) chaseB = -attack; + + chaseC += (chaseB/overallscale); + if (chaseC > 1.0) chaseC = 1.0; + if (chaseC < 0.0) chaseC = 0.0; + + inputSampleL *= chaseC; + inputSampleL = drySampleL - (inputSampleL * intensity); + inputSampleL = (drySampleL * dry) + (inputSampleL * wet); + + inputSampleR *= chaseC; + inputSampleR = drySampleR - (inputSampleR * intensity); + inputSampleR = (drySampleR * dry) + (inputSampleR * wet); + + //noise shaping to 32-bit floating point + if (flip) { + fpTemp = inputSampleL; + fpNShapeAL = (fpNShapeAL*fpOld)+((inputSampleL-fpTemp)*fpNew); + inputSampleL += fpNShapeAL; + + fpTemp = inputSampleR; + fpNShapeAR = (fpNShapeAR*fpOld)+((inputSampleR-fpTemp)*fpNew); + inputSampleR += fpNShapeAR; + } + else { + fpTemp = inputSampleL; + fpNShapeBL = (fpNShapeBL*fpOld)+((inputSampleL-fpTemp)*fpNew); + inputSampleL += fpNShapeBL; + + fpTemp = inputSampleR; + fpNShapeBR = (fpNShapeBR*fpOld)+((inputSampleR-fpTemp)*fpNew); + inputSampleR += fpNShapeBR; + } + flip = !flip; + //end noise shaping on 32 bit output + + *out1 = inputSampleL; + *out2 = inputSampleR; + + *in1++; + *in2++; + *out1++; + *out2++; + } +} + +void SurgeTide::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 fpTemp; //this is different from singlereplacing + long double fpOld = 0.618033988749894848204586; //golden ratio! + long double fpNew = 1.0 - fpOld; + + long double inputSampleL; + long double inputSampleR; + long double drySampleL; + long double drySampleR; + + double intensity = A; + double attack = ((B+0.1)*0.0005)/overallscale; + double decay = ((B+0.001)*0.00005)/overallscale; + double wet = C; + double dry = 1.0 - wet; + double inputSense; + + 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; + + inputSampleL *= 8.0; + inputSampleR *= 8.0; + inputSampleL *= intensity; + inputSampleR *= intensity; + + inputSense = fabs(inputSampleL); + if (fabs(inputSampleR) > inputSense) + inputSense = fabs(inputSampleR); + + if (chaseC < inputSense) chaseA += attack; + if (chaseC > inputSense) chaseA -= decay; + + if (chaseA > decay) chaseA = decay; + if (chaseA < -attack) chaseA = -attack; + + chaseB += (chaseA/overallscale); + + if (chaseB > decay) chaseB = decay; + if (chaseB < -attack) chaseB = -attack; + + chaseC += (chaseB/overallscale); + if (chaseC > 1.0) chaseC = 1.0; + if (chaseC < 0.0) chaseC = 0.0; + + inputSampleL *= chaseC; + inputSampleL = drySampleL - (inputSampleL * intensity); + inputSampleL = (drySampleL * dry) + (inputSampleL * wet); + + inputSampleR *= chaseC; + inputSampleR = drySampleR - (inputSampleR * intensity); + inputSampleR = (drySampleR * dry) + (inputSampleR * wet); + + //noise shaping to 64-bit floating point + if (flip) { + fpTemp = inputSampleL; + fpNShapeAL = (fpNShapeAL*fpOld)+((inputSampleL-fpTemp)*fpNew); + inputSampleL += fpNShapeAL; + + fpTemp = inputSampleR; + fpNShapeAR = (fpNShapeAR*fpOld)+((inputSampleR-fpTemp)*fpNew); + inputSampleR += fpNShapeAR; + } + else { + fpTemp = inputSampleL; + fpNShapeBL = (fpNShapeBL*fpOld)+((inputSampleL-fpTemp)*fpNew); + inputSampleL += fpNShapeBL; + + fpTemp = inputSampleR; + fpNShapeBR = (fpNShapeBR*fpOld)+((inputSampleR-fpTemp)*fpNew); + inputSampleR += fpNShapeBR; + } + flip = !flip; + //end noise shaping on 64 bit output + + *out1 = inputSampleL; + *out2 = inputSampleR; + + *in1++; + *in2++; + *out1++; + *out2++; + } +}
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