diff options
Diffstat (limited to 'plugins/MacVST/ClipOnly/source/ClipOnlyProc.cpp')
| -rwxr-xr-x | plugins/MacVST/ClipOnly/source/ClipOnlyProc.cpp | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/plugins/MacVST/ClipOnly/source/ClipOnlyProc.cpp b/plugins/MacVST/ClipOnly/source/ClipOnlyProc.cpp new file mode 100755 index 0000000..a060ea1 --- /dev/null +++ b/plugins/MacVST/ClipOnly/source/ClipOnlyProc.cpp @@ -0,0 +1,268 @@ +/* ======================================== + * ClipOnly - ClipOnly.h + * Copyright (c) 2016 airwindows, All rights reserved + * ======================================== */ + +#ifndef __ClipOnly_H +#include "ClipOnly.h" +#endif + +void ClipOnly::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames) +{ + float* in1 = inputs[0]; + float* in2 = inputs[1]; + float* out1 = outputs[0]; + float* out2 = outputs[1]; + + double hardness = 0.7390851332151606; // x == cos(x) + double softness = 1.0 - hardness; + double refclip = 0.9549925859; // -0.2dB + + float inputSampleL; + float 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 (inputSampleL > 4.0) inputSampleL = 4.0; + if (inputSampleL < -4.0) inputSampleL = -4.0; + if (inputSampleR > 4.0) inputSampleR = 4.0; + if (inputSampleR < -4.0) inputSampleR = -4.0; + + if (wasPosClipL == true) { //current will be over + if (inputSampleL < lastSampleL) { //next one will NOT be over + lastSampleL = ((refclip*hardness) + (inputSampleL * softness)); + } + else { //still clipping, still chasing the target + lastSampleL = ((lastSampleL*hardness) + (refclip * softness)); + } + } + wasPosClipL = false; + if (inputSampleL > refclip) { //next will be over the true clip level. otherwise we directly use it + wasPosClipL = true; //set the clip flag + inputSampleL = ((refclip*hardness) + (lastSampleL * softness)); + } + + if (wasNegClipL == true) { //current will be -over + if (inputSampleL > lastSampleL) { //next one will NOT be -over + lastSampleL = ((-refclip*hardness) + (inputSampleL * softness)); + } + else { //still clipping, still chasing the target + lastSampleL = ((lastSampleL*hardness) + (-refclip * softness)); + } + } + wasNegClipL = false; + if (inputSampleL < -refclip) { //next will be -refclip. otherwise we directly use it + wasNegClipL = true; //set the clip flag + inputSampleL = ((-refclip*hardness) + (lastSampleL * softness)); + } + + if (wasPosClipR == true) { //current will be over + if (inputSampleR < lastSampleR) { //next one will NOT be over + lastSampleR = ((refclip*hardness) + (inputSampleR * softness)); + } + else { //still clipping, still chasing the target + lastSampleR = ((lastSampleR*hardness) + (refclip * softness)); + } + } + wasPosClipR = false; + if (inputSampleR > refclip) { //next will be over the true clip level. otherwise we directly use it + wasPosClipR = true; //set the clip flag + inputSampleR = ((refclip*hardness) + (lastSampleR * softness)); + } + + if (wasNegClipR == true) { //current will be -over + if (inputSampleR > lastSampleR) { //next one will NOT be -over + lastSampleR = ((-refclip*hardness) + (inputSampleR * softness)); + } + else { //still clipping, still chasing the target + lastSampleR = ((lastSampleR*hardness) + (-refclip * softness)); + } + } + wasNegClipR = false; + if (inputSampleR < -refclip) { //next will be -refclip. otherwise we directly use it + wasNegClipR = true; //set the clip flag + inputSampleR = ((-refclip*hardness) + (lastSampleR * softness)); + } + + *out1 = lastSampleL; + *out2 = lastSampleR; + lastSampleL = inputSampleL; + lastSampleR = inputSampleR; + + *in1++; + *in2++; + *out1++; + *out2++; + } +} + +void ClipOnly::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames) +{ + double* in1 = inputs[0]; + double* in2 = inputs[1]; + double* out1 = outputs[0]; + double* out2 = outputs[1]; + + double hardness = 0.7390851332151606; // x == cos(x) + double softness = 1.0 - hardness; + double refclip = 0.9549925859; // -0.2dB + + double inputSampleL; + 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 (inputSampleL > 4.0) inputSampleL = 4.0; + if (inputSampleL < -4.0) inputSampleL = -4.0; + if (inputSampleR > 4.0) inputSampleR = 4.0; + if (inputSampleR < -4.0) inputSampleR = -4.0; + + if (wasPosClipL == true) { //current will be over + if (inputSampleL < lastSampleL) { //next one will NOT be over + lastSampleL = ((refclip*hardness) + (inputSampleL * softness)); + } + else { //still clipping, still chasing the target + lastSampleL = ((lastSampleL*hardness) + (refclip * softness)); + } + } + wasPosClipL = false; + if (inputSampleL > refclip) { //next will be over the true clip level. otherwise we directly use it + wasPosClipL = true; //set the clip flag + inputSampleL = ((refclip*hardness) + (lastSampleL * softness)); + } + + if (wasNegClipL == true) { //current will be -over + if (inputSampleL > lastSampleL) { //next one will NOT be -over + lastSampleL = ((-refclip*hardness) + (inputSampleL * softness)); + } + else { //still clipping, still chasing the target + lastSampleL = ((lastSampleL*hardness) + (-refclip * softness)); + } + } + wasNegClipL = false; + if (inputSampleL < -refclip) { //next will be -refclip. otherwise we directly use it + wasNegClipL = true; //set the clip flag + inputSampleL = ((-refclip*hardness) + (lastSampleL * softness)); + } + + if (wasPosClipR == true) { //current will be over + if (inputSampleR < lastSampleR) { //next one will NOT be over + lastSampleR = ((refclip*hardness) + (inputSampleR * softness)); + } + else { //still clipping, still chasing the target + lastSampleR = ((lastSampleR*hardness) + (refclip * softness)); + } + } + wasPosClipR = false; + if (inputSampleR > refclip) { //next will be over the true clip level. otherwise we directly use it + wasPosClipR = true; //set the clip flag + inputSampleR = ((refclip*hardness) + (lastSampleR * softness)); + } + + if (wasNegClipR == true) { //current will be -over + if (inputSampleR > lastSampleR) { //next one will NOT be -over + lastSampleR = ((-refclip*hardness) + (inputSampleR * softness)); + } + else { //still clipping, still chasing the target + lastSampleR = ((lastSampleR*hardness) + (-refclip * softness)); + } + } + wasNegClipR = false; + if (inputSampleR < -refclip) { //next will be -refclip. otherwise we directly use it + wasNegClipR = true; //set the clip flag + inputSampleR = ((-refclip*hardness) + (lastSampleR * softness)); + } + + *out1 = lastSampleL; + *out2 = lastSampleR; + lastSampleL = inputSampleL; + lastSampleR = inputSampleR; + + *in1++; + *in2++; + *out1++; + *out2++; + } +}
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