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Diffstat (limited to 'plugins/MacVST/PowerSag/source/PowerSagProc.cpp')
| -rwxr-xr-x | plugins/MacVST/PowerSag/source/PowerSagProc.cpp | 300 |
1 files changed, 300 insertions, 0 deletions
diff --git a/plugins/MacVST/PowerSag/source/PowerSagProc.cpp b/plugins/MacVST/PowerSag/source/PowerSagProc.cpp new file mode 100755 index 0000000..d1afa31 --- /dev/null +++ b/plugins/MacVST/PowerSag/source/PowerSagProc.cpp @@ -0,0 +1,300 @@ +/* ======================================== + * PowerSag - PowerSag.h + * Copyright (c) 2016 airwindows, All rights reserved + * ======================================== */ + +#ifndef __PowerSag_H +#include "PowerSag.h" +#endif + +void PowerSag::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames) +{ + float* in1 = inputs[0]; + float* in2 = inputs[1]; + float* out1 = outputs[0]; + float* out2 = outputs[1]; + + double intensity = pow(A,5)*80.0; + double depthA = pow(B,2); + int offsetA = (int)(depthA * 3900) + 1; + double clamp; + double thickness; + double out; + double bridgerectifier; + + float fpTemp; + long double fpOld = 0.618033988749894848204586; //golden ratio! + long double fpNew = 1.0 - fpOld; + + long double inputSampleL; + long double inputSampleR; + + 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. + } + + if (gcount < 0 || gcount > 4000) {gcount = 4000;} + + //doing L + dL[gcount+4000] = dL[gcount] = fabs(inputSampleL)*intensity; + controlL += (dL[gcount] / offsetA); + controlL -= (dL[gcount+offsetA] / offsetA); + controlL -= 0.000001; + clamp = 1; + if (controlL < 0) {controlL = 0;} + if (controlL > 1) {clamp -= (controlL - 1); controlL = 1;} + if (clamp < 0.5) {clamp = 0.5;} + thickness = ((1.0 - controlL) * 2.0) - 1.0; + out = fabs(thickness); + bridgerectifier = fabs(inputSampleL); + if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633; + //max value for sine function + if (thickness > 0) bridgerectifier = sin(bridgerectifier); + else bridgerectifier = 1-cos(bridgerectifier); + //produce either boosted or starved version + if (inputSampleL > 0) inputSampleL = (inputSampleL*(1-out))+(bridgerectifier*out); + else inputSampleL = (inputSampleL*(1-out))-(bridgerectifier*out); + //blend according to density control + inputSampleL *= clamp; + //end L + + //doing R + dR[gcount+4000] = dR[gcount] = fabs(inputSampleR)*intensity; + controlR += (dR[gcount] / offsetA); + controlR -= (dR[gcount+offsetA] / offsetA); + controlR -= 0.000001; + clamp = 1; + if (controlR < 0) {controlR = 0;} + if (controlR > 1) {clamp -= (controlR - 1); controlR = 1;} + if (clamp < 0.5) {clamp = 0.5;} + thickness = ((1.0 - controlR) * 2.0) - 1.0; + out = fabs(thickness); + bridgerectifier = fabs(inputSampleR); + if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633; + //max value for sine function + if (thickness > 0) bridgerectifier = sin(bridgerectifier); + else bridgerectifier = 1-cos(bridgerectifier); + //produce either boosted or starved version + if (inputSampleR > 0) inputSampleR = (inputSampleR*(1-out))+(bridgerectifier*out); + else inputSampleR = (inputSampleR*(1-out))-(bridgerectifier*out); + //blend according to density control + inputSampleR *= clamp; + //end R + + gcount--; + + + //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 PowerSag::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames) +{ + double* in1 = inputs[0]; + double* in2 = inputs[1]; + double* out1 = outputs[0]; + double* out2 = outputs[1]; + + double intensity = pow(A,5)*80.0; + double depthA = pow(B,2); + int offsetA = (int)(depthA * 3900) + 1; + double clamp; + double thickness; + double out; + double bridgerectifier; + + 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; + + 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. + } + + if (gcount < 0 || gcount > 4000) {gcount = 4000;} + + //doing L + dL[gcount+4000] = dL[gcount] = fabs(inputSampleL)*intensity; + controlL += (dL[gcount] / offsetA); + controlL -= (dL[gcount+offsetA] / offsetA); + controlL -= 0.000001; + clamp = 1; + if (controlL < 0) {controlL = 0;} + if (controlL > 1) {clamp -= (controlL - 1); controlL = 1;} + if (clamp < 0.5) {clamp = 0.5;} + thickness = ((1.0 - controlL) * 2.0) - 1.0; + out = fabs(thickness); + bridgerectifier = fabs(inputSampleL); + if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633; + //max value for sine function + if (thickness > 0) bridgerectifier = sin(bridgerectifier); + else bridgerectifier = 1-cos(bridgerectifier); + //produce either boosted or starved version + if (inputSampleL > 0) inputSampleL = (inputSampleL*(1-out))+(bridgerectifier*out); + else inputSampleL = (inputSampleL*(1-out))-(bridgerectifier*out); + //blend according to density control + inputSampleL *= clamp; + //end L + + //doing R + dR[gcount+4000] = dR[gcount] = fabs(inputSampleR)*intensity; + controlR += (dR[gcount] / offsetA); + controlR -= (dR[gcount+offsetA] / offsetA); + controlR -= 0.000001; + clamp = 1; + if (controlR < 0) {controlR = 0;} + if (controlR > 1) {clamp -= (controlR - 1); controlR = 1;} + if (clamp < 0.5) {clamp = 0.5;} + thickness = ((1.0 - controlR) * 2.0) - 1.0; + out = fabs(thickness); + bridgerectifier = fabs(inputSampleR); + if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633; + //max value for sine function + if (thickness > 0) bridgerectifier = sin(bridgerectifier); + else bridgerectifier = 1-cos(bridgerectifier); + //produce either boosted or starved version + if (inputSampleR > 0) inputSampleR = (inputSampleR*(1-out))+(bridgerectifier*out); + else inputSampleR = (inputSampleR*(1-out))-(bridgerectifier*out); + //blend according to density control + inputSampleR *= clamp; + //end R + + gcount--; + + + //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++; + } +}
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