diff options
Diffstat (limited to 'plugins/LinuxVST/src/Distortion/DistortionProc.cpp')
-rwxr-xr-x | plugins/LinuxVST/src/Distortion/DistortionProc.cpp | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/plugins/LinuxVST/src/Distortion/DistortionProc.cpp b/plugins/LinuxVST/src/Distortion/DistortionProc.cpp new file mode 100755 index 0000000..a31dcba --- /dev/null +++ b/plugins/LinuxVST/src/Distortion/DistortionProc.cpp @@ -0,0 +1,250 @@ +/* ======================================== + * Distortion - Distortion.h + * Copyright (c) 2016 airwindows, All rights reserved + * ======================================== */ + +#ifndef __Distortion_H +#include "Distortion.h" +#endif + +void Distortion::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames) +{ + float* in1 = inputs[0]; + float* in2 = inputs[1]; + float* out1 = outputs[0]; + float* out2 = outputs[1]; + + int stages = (int)floor(getSampleRate()/25000.0); + if (stages > 8) stages = 8; + double input = pow(10.0,((A-0.5)*24.0)/20.0); + int mode = (int) ( B * 4.999 ); + double output = pow(10.0,((C-0.5)*24.0)/20.0); + double wet = D; + + while (--sampleFrames >= 0) + { + long double inputSampleL = *in1; + long double inputSampleR = *in2; + if (fabs(inputSampleL)<1.18e-37) inputSampleL = fpd * 1.18e-37; + if (fabs(inputSampleR)<1.18e-37) inputSampleR = fpd * 1.18e-37; + long double drySampleL = inputSampleL; + long double drySampleR = inputSampleR; + + inputSampleL *= input; + inputSampleR *= input; + + for (int x = 0; x < stages; x++) { + long double temp; + temp = (inputSampleL+previousInL[x])*0.5; + previousInL[x] = inputSampleL; + inputSampleL = temp; + temp = (inputSampleR+previousInR[x])*0.5; + previousInR[x] = inputSampleR; + inputSampleR = temp; + } + + switch (mode) + { + case 0: //Density + if (inputSampleL > 1.570796326794897) inputSampleL = 1.570796326794897; + if (inputSampleL < -1.570796326794897) inputSampleL = -1.570796326794897; + if (inputSampleR > 1.570796326794897) inputSampleR = 1.570796326794897; + if (inputSampleR < -1.570796326794897) inputSampleR = -1.570796326794897; + //clip to 1.570796326794897 to reach maximum output + inputSampleL = sin(inputSampleL); + inputSampleR = sin(inputSampleR); + break; + case 1: //Drive + if (inputSampleL > 1.0) inputSampleL = 1.0; + if (inputSampleL < -1.0) inputSampleL = -1.0; + if (inputSampleR > 1.0) inputSampleR = 1.0; + if (inputSampleR < -1.0) inputSampleR = -1.0; + inputSampleL -= (inputSampleL * (fabs(inputSampleL) * 0.6) * (fabs(inputSampleL) * 0.6)); + inputSampleR -= (inputSampleR * (fabs(inputSampleR) * 0.6) * (fabs(inputSampleR) * 0.6)); + inputSampleL *= 1.5; + inputSampleR *= 1.5; + break; + case 2: //Spiral + if (inputSampleL > 1.2533141373155) inputSampleL = 1.2533141373155; + if (inputSampleL < -1.2533141373155) inputSampleL = -1.2533141373155; + if (inputSampleR > 1.2533141373155) inputSampleR = 1.2533141373155; + if (inputSampleR < -1.2533141373155) inputSampleR = -1.2533141373155; + //clip to 1.2533141373155 to reach maximum output + inputSampleL = sin(inputSampleL * fabs(inputSampleL)) / ((inputSampleL == 0.0) ?1:fabs(inputSampleL)); + inputSampleR = sin(inputSampleR * fabs(inputSampleR)) / ((inputSampleR == 0.0) ?1:fabs(inputSampleR)); + break; + case 3: //Mojo + long double mojo; mojo = pow(fabs(inputSampleL),0.25); + if (mojo > 0.0) inputSampleL = (sin(inputSampleL * mojo * M_PI * 0.5) / mojo) * 0.987654321; + mojo = pow(fabs(inputSampleR),0.25); + if (mojo > 0.0) inputSampleR = (sin(inputSampleR * mojo * M_PI * 0.5) / mojo) * 0.987654321; + //mojo is the one that flattens WAAAAY out very softly before wavefolding + break; + case 4: //Dyno + long double dyno; dyno = pow(fabs(inputSampleL),4); + if (dyno > 0.0) inputSampleL = (sin(inputSampleL * dyno) / dyno) * 1.1654321; + dyno = pow(fabs(inputSampleR),4); + if (dyno > 0.0) inputSampleR = (sin(inputSampleR * dyno) / dyno) * 1.1654321; + //dyno is the one that tries to raise peak energy + break; + } + + for (int x = 1; x < (stages/2); x++) { + long double temp; + temp = (inputSampleL+previousOutL[x])*0.5; + previousOutL[x] = inputSampleL; + inputSampleL = temp; + temp = (inputSampleR+previousOutR[x])*0.5; + previousOutR[x] = inputSampleR; + inputSampleR = temp; + } + + if (output != 1.0) { + inputSampleL *= output; + inputSampleR *= output; + } + + if (wet !=1.0) { + inputSampleL = (inputSampleL * wet) + (drySampleL * (1.0-wet)); + inputSampleR = (inputSampleR * wet) + (drySampleR * (1.0-wet)); + } + + //begin 32 bit stereo floating point dither + int expon; frexpf((float)inputSampleL, &expon); + fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5; + inputSampleL += ((double(fpd)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62)); + frexpf((float)inputSampleR, &expon); + fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5; + inputSampleR += ((double(fpd)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62)); + //end 32 bit stereo floating point dither + + *out1 = inputSampleL; + *out2 = inputSampleR; + + *in1++; + *in2++; + *out1++; + *out2++; + } +} + +void Distortion::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames) +{ + double* in1 = inputs[0]; + double* in2 = inputs[1]; + double* out1 = outputs[0]; + double* out2 = outputs[1]; + + int stages = (int)floor(getSampleRate()/25000.0); + if (stages > 8) stages = 8; + double input = pow(10.0,((A-0.5)*24.0)/20.0); + int mode = (int) ( B * 4.999 ); + double output = pow(10.0,((C-0.5)*24.0)/20.0); + double wet = D; + + while (--sampleFrames >= 0) + { + long double inputSampleL = *in1; + long double inputSampleR = *in2; + if (fabs(inputSampleL)<1.18e-37) inputSampleL = fpd * 1.18e-37; + if (fabs(inputSampleR)<1.18e-37) inputSampleR = fpd * 1.18e-37; + long double drySampleL = inputSampleL; + long double drySampleR = inputSampleR; + + inputSampleL *= input; + inputSampleR *= input; + + for (int x = 0; x < stages; x++) { + long double temp; + temp = (inputSampleL+previousInL[x])*0.5; + previousInL[x] = inputSampleL; + inputSampleL = temp; + temp = (inputSampleR+previousInR[x])*0.5; + previousInR[x] = inputSampleR; + inputSampleR = temp; + } + + switch (mode) + { + case 0: //Density + if (inputSampleL > 1.570796326794897) inputSampleL = 1.570796326794897; + if (inputSampleL < -1.570796326794897) inputSampleL = -1.570796326794897; + if (inputSampleR > 1.570796326794897) inputSampleR = 1.570796326794897; + if (inputSampleR < -1.570796326794897) inputSampleR = -1.570796326794897; + //clip to 1.570796326794897 to reach maximum output + inputSampleL = sin(inputSampleL); + inputSampleR = sin(inputSampleR); + break; + case 1: //Drive + if (inputSampleL > 1.0) inputSampleL = 1.0; + if (inputSampleL < -1.0) inputSampleL = -1.0; + if (inputSampleR > 1.0) inputSampleR = 1.0; + if (inputSampleR < -1.0) inputSampleR = -1.0; + inputSampleL -= (inputSampleL * (fabs(inputSampleL) * 0.6) * (fabs(inputSampleL) * 0.6)); + inputSampleR -= (inputSampleR * (fabs(inputSampleR) * 0.6) * (fabs(inputSampleR) * 0.6)); + inputSampleL *= 1.5; + inputSampleR *= 1.5; + break; + case 2: //Spiral + if (inputSampleL > 1.2533141373155) inputSampleL = 1.2533141373155; + if (inputSampleL < -1.2533141373155) inputSampleL = -1.2533141373155; + if (inputSampleR > 1.2533141373155) inputSampleR = 1.2533141373155; + if (inputSampleR < -1.2533141373155) inputSampleR = -1.2533141373155; + //clip to 1.2533141373155 to reach maximum output + inputSampleL = sin(inputSampleL * fabs(inputSampleL)) / ((inputSampleL == 0.0) ?1:fabs(inputSampleL)); + inputSampleR = sin(inputSampleR * fabs(inputSampleR)) / ((inputSampleR == 0.0) ?1:fabs(inputSampleR)); + break; + case 3: //Mojo + long double mojo; mojo = pow(fabs(inputSampleL),0.25); + if (mojo > 0.0) inputSampleL = (sin(inputSampleL * mojo * M_PI * 0.5) / mojo) * 0.987654321; + mojo = pow(fabs(inputSampleR),0.25); + if (mojo > 0.0) inputSampleR = (sin(inputSampleR * mojo * M_PI * 0.5) / mojo) * 0.987654321; + //mojo is the one that flattens WAAAAY out very softly before wavefolding + break; + case 4: //Dyno + long double dyno; dyno = pow(fabs(inputSampleL),4); + if (dyno > 0.0) inputSampleL = (sin(inputSampleL * dyno) / dyno) * 1.1654321; + dyno = pow(fabs(inputSampleR),4); + if (dyno > 0.0) inputSampleR = (sin(inputSampleR * dyno) / dyno) * 1.1654321; + //dyno is the one that tries to raise peak energy + break; + } + + for (int x = 1; x < (stages/2); x++) { + long double temp; + temp = (inputSampleL+previousOutL[x])*0.5; + previousOutL[x] = inputSampleL; + inputSampleL = temp; + temp = (inputSampleR+previousOutR[x])*0.5; + previousOutR[x] = inputSampleR; + inputSampleR = temp; + } + + if (output != 1.0) { + inputSampleL *= output; + inputSampleR *= output; + } + + if (wet !=1.0) { + inputSampleL = (inputSampleL * wet) + (drySampleL * (1.0-wet)); + inputSampleR = (inputSampleR * wet) + (drySampleR * (1.0-wet)); + } + + //begin 64 bit stereo floating point dither + int expon; frexp((double)inputSampleL, &expon); + fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5; + inputSampleL += ((double(fpd)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62)); + frexp((double)inputSampleR, &expon); + fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5; + inputSampleR += ((double(fpd)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62)); + //end 64 bit stereo floating point dither + + *out1 = inputSampleL; + *out2 = inputSampleR; + + *in1++; + *in2++; + *out1++; + *out2++; + } +} |