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Diffstat (limited to 'plugins/MacVST/BuildATPDF/source/BuildATPDFProc.cpp')
| -rwxr-xr-x | plugins/MacVST/BuildATPDF/source/BuildATPDFProc.cpp | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/plugins/MacVST/BuildATPDF/source/BuildATPDFProc.cpp b/plugins/MacVST/BuildATPDF/source/BuildATPDFProc.cpp new file mode 100755 index 0000000..dfea125 --- /dev/null +++ b/plugins/MacVST/BuildATPDF/source/BuildATPDFProc.cpp @@ -0,0 +1,242 @@ +/* ======================================== + * BuildATPDF - BuildATPDF.h + * Copyright (c) 2016 airwindows, All rights reserved + * ======================================== */ + +#ifndef __BuildATPDF_H +#include "BuildATPDF.h" +#endif + +void BuildATPDF::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames) +{ + float* in1 = inputs[0]; + float* in2 = inputs[1]; + float* out1 = outputs[0]; + float* out2 = outputs[1]; + + f[0] = (A*2)-1; + f[1] = (B*2)-1; + f[2] = (C*2)-1; + f[3] = (D*2)-1; + f[4] = (E*2)-1; + f[5] = (F*2)-1; + f[6] = (G*2)-1; + f[7] = (H*2)-1; + f[8] = (I*2)-1; + f[9] = (J*2)-1; + double currentDither; + 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. + } + + inputSampleL *= 8388608.0; + inputSampleR *= 8388608.0; + //0-1 is now one bit, now we dither + + bL[9] = bL[8]; bL[8] = bL[7]; bL[7] = bL[6]; bL[6] = bL[5]; + bL[5] = bL[4]; bL[4] = bL[3]; bL[3] = bL[2]; bL[2] = bL[1]; + bL[1] = bL[0]; bL[0] = (rand()/(double)RAND_MAX); + + currentDither = (bL[0] * f[0]); + currentDither += (bL[1] * f[1]); + currentDither += (bL[2] * f[2]); + currentDither += (bL[3] * f[3]); + currentDither += (bL[4] * f[4]); + currentDither += (bL[5] * f[5]); + currentDither += (bL[6] * f[6]); + currentDither += (bL[7] * f[7]); + currentDither += (bL[8] * f[8]); + currentDither += (bL[9] * f[9]); + inputSampleL += currentDither; + + + bR[9] = bR[8]; bR[8] = bR[7]; bR[7] = bR[6]; bR[6] = bR[5]; + bR[5] = bR[4]; bR[4] = bR[3]; bR[3] = bR[2]; bR[2] = bR[1]; + bR[1] = bR[0]; bR[0] = (rand()/(double)RAND_MAX); + + currentDither = (bR[0] * f[0]); + currentDither += (bR[1] * f[1]); + currentDither += (bR[2] * f[2]); + currentDither += (bR[3] * f[3]); + currentDither += (bR[4] * f[4]); + currentDither += (bR[5] * f[5]); + currentDither += (bR[6] * f[6]); + currentDither += (bR[7] * f[7]); + currentDither += (bR[8] * f[8]); + currentDither += (bR[9] * f[9]); + inputSampleR += currentDither; + + inputSampleL = floor(inputSampleL); + inputSampleR = floor(inputSampleR); + + inputSampleL /= 8388608.0; + inputSampleR /= 8388608.0; + + *out1 = inputSampleL; + *out2 = inputSampleR; + + *in1++; + *in2++; + *out1++; + *out2++; + } +} + +void BuildATPDF::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames) +{ + double* in1 = inputs[0]; + double* in2 = inputs[1]; + double* out1 = outputs[0]; + double* out2 = outputs[1]; + + f[0] = (A*2)-1; + f[1] = (B*2)-1; + f[2] = (C*2)-1; + f[3] = (D*2)-1; + f[4] = (E*2)-1; + f[5] = (F*2)-1; + f[6] = (G*2)-1; + f[7] = (H*2)-1; + f[8] = (I*2)-1; + f[9] = (J*2)-1; + double currentDither; + 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. + } + + inputSampleL *= 8388608.0; + inputSampleR *= 8388608.0; + //0-1 is now one bit, now we dither + + bL[9] = bL[8]; bL[8] = bL[7]; bL[7] = bL[6]; bL[6] = bL[5]; + bL[5] = bL[4]; bL[4] = bL[3]; bL[3] = bL[2]; bL[2] = bL[1]; + bL[1] = bL[0]; bL[0] = (rand()/(double)RAND_MAX); + + currentDither = (bL[0] * f[0]); + currentDither += (bL[1] * f[1]); + currentDither += (bL[2] * f[2]); + currentDither += (bL[3] * f[3]); + currentDither += (bL[4] * f[4]); + currentDither += (bL[5] * f[5]); + currentDither += (bL[6] * f[6]); + currentDither += (bL[7] * f[7]); + currentDither += (bL[8] * f[8]); + currentDither += (bL[9] * f[9]); + inputSampleL += currentDither; + + + bR[9] = bR[8]; bR[8] = bR[7]; bR[7] = bR[6]; bR[6] = bR[5]; + bR[5] = bR[4]; bR[4] = bR[3]; bR[3] = bR[2]; bR[2] = bR[1]; + bR[1] = bR[0]; bR[0] = (rand()/(double)RAND_MAX); + + currentDither = (bR[0] * f[0]); + currentDither += (bR[1] * f[1]); + currentDither += (bR[2] * f[2]); + currentDither += (bR[3] * f[3]); + currentDither += (bR[4] * f[4]); + currentDither += (bR[5] * f[5]); + currentDither += (bR[6] * f[6]); + currentDither += (bR[7] * f[7]); + currentDither += (bR[8] * f[8]); + currentDither += (bR[9] * f[9]); + inputSampleR += currentDither; + + inputSampleL = floor(inputSampleL); + inputSampleR = floor(inputSampleR); + + inputSampleL /= 8388608.0; + inputSampleR /= 8388608.0; + + *out1 = inputSampleL; + *out2 = inputSampleR; + + *in1++; + *in2++; + *out1++; + *out2++; + } +}
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