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author | Chris Johnson <jinx6568@sover.net> | 2018-09-02 22:35:13 -0400 |
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committer | Chris Johnson <jinx6568@sover.net> | 2018-09-02 22:35:13 -0400 |
commit | b4f55328448d087a68e6f658638fb3d38d86be12 (patch) | |
tree | 217a6d4c9ecc1c34e15e3f9e3774cc9858e39bfa /plugins/MacVST/SpatializeDither/source | |
parent | dea49efc0e05cdd55c00ce701aecef2bd742fc8c (diff) | |
download | airwindows-lv2-port-b4f55328448d087a68e6f658638fb3d38d86be12.tar.gz airwindows-lv2-port-b4f55328448d087a68e6f658638fb3d38d86be12.tar.bz2 airwindows-lv2-port-b4f55328448d087a68e6f658638fb3d38d86be12.zip |
Ditherbox… and individual dithers
Diffstat (limited to 'plugins/MacVST/SpatializeDither/source')
3 files changed, 383 insertions, 0 deletions
diff --git a/plugins/MacVST/SpatializeDither/source/SpatializeDither.cpp b/plugins/MacVST/SpatializeDither/source/SpatializeDither.cpp new file mode 100755 index 0000000..c265704 --- /dev/null +++ b/plugins/MacVST/SpatializeDither/source/SpatializeDither.cpp @@ -0,0 +1,80 @@ +/* ======================================== + * SpatializeDither - SpatializeDither.h + * Copyright (c) 2016 airwindows, All rights reserved + * ======================================== */ + +#ifndef __SpatializeDither_H +#include "SpatializeDither.h" +#endif + +AudioEffect* createEffectInstance(audioMasterCallback audioMaster) {return new SpatializeDither(audioMaster);} + +SpatializeDither::SpatializeDither(audioMasterCallback audioMaster) : + AudioEffectX(audioMaster, kNumPrograms, kNumParameters) +{ + contingentErrL = 0.0; + contingentErrR = 0.0; + flip = false; + //this is reset: values being initialized only once. Startup values, whatever they are. + + _canDo.insert("plugAsChannelInsert"); // plug-in can be used as a channel insert effect. + _canDo.insert("plugAsSend"); // plug-in can be used as a send effect. + _canDo.insert("x2in2out"); + setNumInputs(kNumInputs); + setNumOutputs(kNumOutputs); + setUniqueID(kUniqueId); + canProcessReplacing(); // supports output replacing + canDoubleReplacing(); // supports double precision processing + programsAreChunks(true); + vst_strncpy (_programName, "Default", kVstMaxProgNameLen); // default program name +} + +SpatializeDither::~SpatializeDither() {} +VstInt32 SpatializeDither::getVendorVersion () {return 1000;} +void SpatializeDither::setProgramName(char *name) {vst_strncpy (_programName, name, kVstMaxProgNameLen);} +void SpatializeDither::getProgramName(char *name) {vst_strncpy (name, _programName, kVstMaxProgNameLen);} +//airwindows likes to ignore this stuff. Make your own programs, and make a different plugin rather than +//trying to do versioning and preventing people from using older versions. Maybe they like the old one! + +VstInt32 SpatializeDither::getChunk (void** data, bool isPreset) +{ + return kNumParameters * sizeof(float); +} + +VstInt32 SpatializeDither::setChunk (void* data, VstInt32 byteSize, bool isPreset) +{ + return 0; +} + +void SpatializeDither::setParameter(VstInt32 index, float value) { + } + +float SpatializeDither::getParameter(VstInt32 index) { + return 0.0; //we only need to update the relevant name, this is simple to manage +} + +void SpatializeDither::getParameterName(VstInt32 index, char *text) { +} + +void SpatializeDither::getParameterDisplay(VstInt32 index, char *text) { +} + +void SpatializeDither::getParameterLabel(VstInt32 index, char *text) { +} + +VstInt32 SpatializeDither::canDo(char *text) +{ return (_canDo.find(text) == _canDo.end()) ? -1: 1; } // 1 = yes, -1 = no, 0 = don't know + +bool SpatializeDither::getEffectName(char* name) { + vst_strncpy(name, "SpatializeDither", kVstMaxProductStrLen); return true; +} + +VstPlugCategory SpatializeDither::getPlugCategory() {return kPlugCategEffect;} + +bool SpatializeDither::getProductString(char* text) { + vst_strncpy (text, "airwindows SpatializeDither", kVstMaxProductStrLen); return true; +} + +bool SpatializeDither::getVendorString(char* text) { + vst_strncpy (text, "airwindows", kVstMaxVendorStrLen); return true; +} diff --git a/plugins/MacVST/SpatializeDither/source/SpatializeDither.h b/plugins/MacVST/SpatializeDither/source/SpatializeDither.h new file mode 100755 index 0000000..1a5213a --- /dev/null +++ b/plugins/MacVST/SpatializeDither/source/SpatializeDither.h @@ -0,0 +1,59 @@ +/* ======================================== + * SpatializeDither - SpatializeDither.h + * Created 8/12/11 by SPIAdmin + * Copyright (c) 2011 __MyCompanyName__, All rights reserved + * ======================================== */ + +#ifndef __SpatializeDither_H +#define __SpatializeDither_H + +#ifndef __audioeffect__ +#include "audioeffectx.h" +#endif + +#include <set> +#include <string> +#include <math.h> + +enum { + kNumParameters = 0 +}; // + +const int kNumPrograms = 0; +const int kNumInputs = 2; +const int kNumOutputs = 2; +const unsigned long kUniqueId = 'sdtr'; //Change this to what the AU identity is! + +class SpatializeDither : + public AudioEffectX +{ +public: + SpatializeDither(audioMasterCallback audioMaster); + ~SpatializeDither(); + virtual bool getEffectName(char* name); // The plug-in name + virtual VstPlugCategory getPlugCategory(); // The general category for the plug-in + virtual bool getProductString(char* text); // This is a unique plug-in string provided by Steinberg + virtual bool getVendorString(char* text); // Vendor info + virtual VstInt32 getVendorVersion(); // Version number + virtual void processReplacing (float** inputs, float** outputs, VstInt32 sampleFrames); + virtual void processDoubleReplacing (double** inputs, double** outputs, VstInt32 sampleFrames); + virtual void getProgramName(char *name); // read the name from the host + virtual void setProgramName(char *name); // changes the name of the preset displayed in the host + virtual VstInt32 getChunk (void** data, bool isPreset); + virtual VstInt32 setChunk (void* data, VstInt32 byteSize, bool isPreset); + virtual float getParameter(VstInt32 index); // get the parameter value at the specified index + virtual void setParameter(VstInt32 index, float value); // set the parameter at index to value + virtual void getParameterLabel(VstInt32 index, char *text); // label for the parameter (eg dB) + virtual void getParameterName(VstInt32 index, char *text); // name of the parameter + virtual void getParameterDisplay(VstInt32 index, char *text); // text description of the current value + virtual VstInt32 canDo(char *text); +private: + char _programName[kVstMaxProgNameLen + 1]; + std::set< std::string > _canDo; + + double contingentErrL; + double contingentErrR; + bool flip; +}; + +#endif diff --git a/plugins/MacVST/SpatializeDither/source/SpatializeDitherProc.cpp b/plugins/MacVST/SpatializeDither/source/SpatializeDitherProc.cpp new file mode 100755 index 0000000..aa092f0 --- /dev/null +++ b/plugins/MacVST/SpatializeDither/source/SpatializeDitherProc.cpp @@ -0,0 +1,244 @@ +/* ======================================== + * SpatializeDither - SpatializeDither.h + * Copyright (c) 2016 airwindows, All rights reserved + * ======================================== */ + +#ifndef __SpatializeDither_H +#include "SpatializeDither.h" +#endif + +void SpatializeDither::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames) +{ + float* in1 = inputs[0]; + float* in2 = inputs[1]; + float* out1 = outputs[0]; + float* out2 = outputs[1]; + + long double inputSampleL; + long double inputSampleR; + + double contingentRnd; + double absSample; + double contingent; + double randyConstant = 1.61803398874989484820458683436563811772030917980576; + double omegaConstant = 0.56714329040978387299996866221035554975381578718651; + double expConstant = 0.06598803584531253707679018759684642493857704825279; + + + 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 + + if (inputSampleL > 0) inputSampleL += 0.383; + if (inputSampleL < 0) inputSampleL -= 0.383; + if (inputSampleR > 0) inputSampleR += 0.383; + if (inputSampleR < 0) inputSampleR -= 0.383; + //adjusting to permit more information drug outta the noisefloor + + contingentRnd = (((rand()/(double)RAND_MAX)+(rand()/(double)RAND_MAX))-1.0) * randyConstant; //produce TPDF dist, scale + contingentRnd -= contingentErrL*omegaConstant; //include err + absSample = fabs(inputSampleL); + contingentErrL = absSample - floor(absSample); //get next err + contingent = contingentErrL * 2.0; //scale of quantization levels + if (contingent > 1.0) contingent = ((-contingent+2.0)*omegaConstant) + expConstant; + else contingent = (contingent * omegaConstant) + expConstant; + //zero is next to a quantization level, one is exactly between them + if (flip) contingentRnd = (contingentRnd * (1.0-contingent)) + contingent + 0.5; + else contingentRnd = (contingentRnd * (1.0-contingent)) - contingent + 0.5; + inputSampleL += (contingentRnd * contingent); + //Contingent Dither + inputSampleL = floor(inputSampleL); + + contingentRnd = (((rand()/(double)RAND_MAX)+(rand()/(double)RAND_MAX))-1.0) * randyConstant; //produce TPDF dist, scale + contingentRnd -= contingentErrR*omegaConstant; //include err + absSample = fabs(inputSampleR); + contingentErrR = absSample - floor(absSample); //get next err + contingent = contingentErrR * 2.0; //scale of quantization levels + if (contingent > 1.0) contingent = ((-contingent+2.0)*omegaConstant) + expConstant; + else contingent = (contingent * omegaConstant) + expConstant; + //zero is next to a quantization level, one is exactly between them + if (flip) contingentRnd = (contingentRnd * (1.0-contingent)) + contingent + 0.5; + else contingentRnd = (contingentRnd * (1.0-contingent)) - contingent + 0.5; + inputSampleR += (contingentRnd * contingent); + //Contingent Dither + inputSampleR = floor(inputSampleR); + + //note: this does not dither for values exactly the same as 16 bit values- + //which forces the dither to gate at 0.0. It goes to digital black, + //and does a teeny parallel-compression thing when almost at digital black. + flip = !flip; + + + inputSampleL /= 8388608.0; + inputSampleR /= 8388608.0; + + *out1 = inputSampleL; + *out2 = inputSampleR; + + *in1++; + *in2++; + *out1++; + *out2++; + } +} + +void SpatializeDither::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames) +{ + double* in1 = inputs[0]; + double* in2 = inputs[1]; + double* out1 = outputs[0]; + double* out2 = outputs[1]; + + long double inputSampleL; + long double inputSampleR; + + double contingentRnd; + double absSample; + double contingent; + double randyConstant = 1.61803398874989484820458683436563811772030917980576; + double omegaConstant = 0.56714329040978387299996866221035554975381578718651; + double expConstant = 0.06598803584531253707679018759684642493857704825279; + + + 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 + + if (inputSampleL > 0) inputSampleL += 0.383; + if (inputSampleL < 0) inputSampleL -= 0.383; + if (inputSampleR > 0) inputSampleR += 0.383; + if (inputSampleR < 0) inputSampleR -= 0.383; + //adjusting to permit more information drug outta the noisefloor + + contingentRnd = (((rand()/(double)RAND_MAX)+(rand()/(double)RAND_MAX))-1.0) * randyConstant; //produce TPDF dist, scale + contingentRnd -= contingentErrL*omegaConstant; //include err + absSample = fabs(inputSampleL); + contingentErrL = absSample - floor(absSample); //get next err + contingent = contingentErrL * 2.0; //scale of quantization levels + if (contingent > 1.0) contingent = ((-contingent+2.0)*omegaConstant) + expConstant; + else contingent = (contingent * omegaConstant) + expConstant; + //zero is next to a quantization level, one is exactly between them + if (flip) contingentRnd = (contingentRnd * (1.0-contingent)) + contingent + 0.5; + else contingentRnd = (contingentRnd * (1.0-contingent)) - contingent + 0.5; + inputSampleL += (contingentRnd * contingent); + //Contingent Dither + inputSampleL = floor(inputSampleL); + + contingentRnd = (((rand()/(double)RAND_MAX)+(rand()/(double)RAND_MAX))-1.0) * randyConstant; //produce TPDF dist, scale + contingentRnd -= contingentErrR*omegaConstant; //include err + absSample = fabs(inputSampleR); + contingentErrR = absSample - floor(absSample); //get next err + contingent = contingentErrR * 2.0; //scale of quantization levels + if (contingent > 1.0) contingent = ((-contingent+2.0)*omegaConstant) + expConstant; + else contingent = (contingent * omegaConstant) + expConstant; + //zero is next to a quantization level, one is exactly between them + if (flip) contingentRnd = (contingentRnd * (1.0-contingent)) + contingent + 0.5; + else contingentRnd = (contingentRnd * (1.0-contingent)) - contingent + 0.5; + inputSampleR += (contingentRnd * contingent); + //Contingent Dither + inputSampleR = floor(inputSampleR); + + //note: this does not dither for values exactly the same as 16 bit values- + //which forces the dither to gate at 0.0. It goes to digital black, + //and does a teeny parallel-compression thing when almost at digital black. + flip = !flip; + + + inputSampleL /= 8388608.0; + inputSampleR /= 8388608.0; + + *out1 = inputSampleL; + *out2 = inputSampleR; + + *in1++; + *in2++; + *out1++; + *out2++; + } +}
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