diff options
Diffstat (limited to 'plugins/WinVST/Remap/RemapProc.cpp')
| -rwxr-xr-x | plugins/WinVST/Remap/RemapProc.cpp | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/plugins/WinVST/Remap/RemapProc.cpp b/plugins/WinVST/Remap/RemapProc.cpp new file mode 100755 index 0000000..594800c --- /dev/null +++ b/plugins/WinVST/Remap/RemapProc.cpp @@ -0,0 +1,156 @@ +/* ======================================== + * Remap - Remap.h + * Copyright (c) 2016 airwindows, All rights reserved + * ======================================== */ + +#ifndef __Remap_H +#include "Remap.h" +#endif + +void Remap::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames) +{ + float* in1 = inputs[0]; + float* in2 = inputs[1]; + float* out1 = outputs[0]; + float* out2 = outputs[1]; + + double drive = A * 0.5; + double gain = (drive+0.2)*8; + double out = B; + double wet = C; + + 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; + + long double gaintrimL = fabs(inputSampleL); + long double gaintrimR = fabs(inputSampleR); + + long double bridgerectifierL = gaintrimL*gain; + long double bridgerectifierR = gaintrimR*gain; + + if (gaintrimL > 1.0) gaintrimL = 1.0; + else gaintrimL *= gaintrimL; + + if (gaintrimR > 1.0) gaintrimR = 1.0; + else gaintrimR *= gaintrimR; + + if (inputSampleL > 1.57079633) bridgerectifierL = 1.0-(1.0-sin(bridgerectifierL)); + else bridgerectifierL = sin(bridgerectifierL); + + if (inputSampleR > 1.57079633) bridgerectifierR = 1.0-(1.0-sin(bridgerectifierR)); + else bridgerectifierR = sin(bridgerectifierR); + + if (inputSampleL > 0) inputSampleL -= (bridgerectifierL*gaintrimL*drive); + else inputSampleL += (bridgerectifierL*gaintrimL*drive); + + if (inputSampleR > 0) inputSampleR -= (bridgerectifierR*gaintrimR*drive); + else inputSampleR += (bridgerectifierR*gaintrimR*drive); + + if (out < 1.0) { + inputSampleL *= out; + inputSampleR *= out; + } + + 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 Remap::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames) +{ + double* in1 = inputs[0]; + double* in2 = inputs[1]; + double* out1 = outputs[0]; + double* out2 = outputs[1]; + + double drive = A * 0.5; + double gain = (drive+0.2)*8; + double out = B; + double wet = C; + + while (--sampleFrames >= 0) + { + long double inputSampleL = *in1; + long double inputSampleR = *in2; + if (fabs(inputSampleL)<1.18e-43) inputSampleL = fpd * 1.18e-43; + if (fabs(inputSampleR)<1.18e-43) inputSampleR = fpd * 1.18e-43; + long double drySampleL = inputSampleL; + long double drySampleR = inputSampleR; + + long double gaintrimL = fabs(inputSampleL); + long double gaintrimR = fabs(inputSampleR); + + long double bridgerectifierL = gaintrimL*gain; + long double bridgerectifierR = gaintrimR*gain; + + if (gaintrimL > 1.0) gaintrimL = 1.0; + else gaintrimL *= gaintrimL; + + if (gaintrimR > 1.0) gaintrimR = 1.0; + else gaintrimR *= gaintrimR; + + if (inputSampleL > 1.57079633) bridgerectifierL = 1.0-(1.0-sin(bridgerectifierL)); + else bridgerectifierL = sin(bridgerectifierL); + + if (inputSampleR > 1.57079633) bridgerectifierR = 1.0-(1.0-sin(bridgerectifierR)); + else bridgerectifierR = sin(bridgerectifierR); + + if (inputSampleL > 0) inputSampleL -= (bridgerectifierL*gaintrimL*drive); + else inputSampleL += (bridgerectifierL*gaintrimL*drive); + + if (inputSampleR > 0) inputSampleR -= (bridgerectifierR*gaintrimR*drive); + else inputSampleR += (bridgerectifierR*gaintrimR*drive); + + if (out < 1.0) { + inputSampleL *= out; + inputSampleR *= out; + } + + 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++; + } +} |