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author | Chris Johnson <jinx6568@sover.net> | 2018-07-01 17:47:00 -0400 |
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committer | Chris Johnson <jinx6568@sover.net> | 2018-07-01 17:47:00 -0400 |
commit | 31d06ef1a29836dbc357a004cb422563c698c88e (patch) | |
tree | aa40949297bc07fd8c9b99bb2890174a80f2a0bc /plugins/MacVST/DeRez/source | |
parent | b2fd95ce19536fc3dcc073e7dee9d8c782d306f2 (diff) | |
download | airwindows-lv2-port-31d06ef1a29836dbc357a004cb422563c698c88e.tar.gz airwindows-lv2-port-31d06ef1a29836dbc357a004cb422563c698c88e.tar.bz2 airwindows-lv2-port-31d06ef1a29836dbc357a004cb422563c698c88e.zip |
DeRez
Diffstat (limited to 'plugins/MacVST/DeRez/source')
-rwxr-xr-x | plugins/MacVST/DeRez/source/DeRez.cpp | 139 | ||||
-rwxr-xr-x | plugins/MacVST/DeRez/source/DeRez.h | 75 | ||||
-rwxr-xr-x | plugins/MacVST/DeRez/source/DeRezProc.cpp | 320 |
3 files changed, 534 insertions, 0 deletions
diff --git a/plugins/MacVST/DeRez/source/DeRez.cpp b/plugins/MacVST/DeRez/source/DeRez.cpp new file mode 100755 index 0000000..3bf36eb --- /dev/null +++ b/plugins/MacVST/DeRez/source/DeRez.cpp @@ -0,0 +1,139 @@ +/* ======================================== + * DeRez - DeRez.h + * Copyright (c) 2016 airwindows, All rights reserved + * ======================================== */ + +#ifndef __DeRez_H +#include "DeRez.h" +#endif + +AudioEffect* createEffectInstance(audioMasterCallback audioMaster) {return new DeRez(audioMaster);} + +DeRez::DeRez(audioMasterCallback audioMaster) : + AudioEffectX(audioMaster, kNumPrograms, kNumParameters) +{ + A = 1.0; + B = 1.0; + + lastSampleL = 0.0; + heldSampleL = 0.0; + lastSampleR = 0.0; + heldSampleR = 0.0; + position = 0.0; + incrementA = 0.0; + incrementB = 0.0; + + fpNShapeLA = 0.0; + fpNShapeLB = 0.0; + fpNShapeRA = 0.0; + fpNShapeRB = 0.0; + fpFlip = true; + //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 +} + +DeRez::~DeRez() {} +VstInt32 DeRez::getVendorVersion () {return 1000;} +void DeRez::setProgramName(char *name) {vst_strncpy (_programName, name, kVstMaxProgNameLen);} +void DeRez::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! + +static float pinParameter(float data) +{ + if (data < 0.0f) return 0.0f; + if (data > 1.0f) return 1.0f; + return data; +} + +VstInt32 DeRez::getChunk (void** data, bool isPreset) +{ + float *chunkData = (float *)calloc(kNumParameters, sizeof(float)); + chunkData[0] = A; + chunkData[1] = B; + /* Note: The way this is set up, it will break if you manage to save settings on an Intel + machine and load them on a PPC Mac. However, it's fine if you stick to the machine you + started with. */ + + *data = chunkData; + return kNumParameters * sizeof(float); +} + +VstInt32 DeRez::setChunk (void* data, VstInt32 byteSize, bool isPreset) +{ + float *chunkData = (float *)data; + A = pinParameter(chunkData[0]); + B = pinParameter(chunkData[1]); + /* We're ignoring byteSize as we found it to be a filthy liar */ + + /* calculate any other fields you need here - you could copy in + code from setParameter() here. */ + return 0; +} + +void DeRez::setParameter(VstInt32 index, float value) { + switch (index) { + case kParamA: A = value; break; + case kParamB: B = value; break; + default: throw; // unknown parameter, shouldn't happen! + } +} + +float DeRez::getParameter(VstInt32 index) { + switch (index) { + case kParamA: return A; break; + case kParamB: return B; break; + default: break; // unknown parameter, shouldn't happen! + } return 0.0; //we only need to update the relevant name, this is simple to manage +} + +void DeRez::getParameterName(VstInt32 index, char *text) { + switch (index) { + case kParamA: vst_strncpy (text, "Freq", kVstMaxParamStrLen); break; + case kParamB: vst_strncpy (text, "Reso", kVstMaxParamStrLen); break; + default: break; // unknown parameter, shouldn't happen! + } //this is our labels for displaying in the VST host +} + +void DeRez::getParameterDisplay(VstInt32 index, char *text) { + switch (index) { + case kParamA: float2string (A, text, kVstMaxParamStrLen); break; + case kParamB: float2string (B, text, kVstMaxParamStrLen); break; + default: break; // unknown parameter, shouldn't happen! + } //this displays the values and handles 'popups' where it's discrete choices +} + +void DeRez::getParameterLabel(VstInt32 index, char *text) { + switch (index) { + case kParamA: vst_strncpy (text, "", kVstMaxParamStrLen); break; + case kParamB: vst_strncpy (text, "", kVstMaxParamStrLen); break; + default: break; // unknown parameter, shouldn't happen! + } +} + +VstInt32 DeRez::canDo(char *text) +{ return (_canDo.find(text) == _canDo.end()) ? -1: 1; } // 1 = yes, -1 = no, 0 = don't know + +bool DeRez::getEffectName(char* name) { + vst_strncpy(name, "DeRez", kVstMaxProductStrLen); return true; +} + +VstPlugCategory DeRez::getPlugCategory() {return kPlugCategEffect;} + +bool DeRez::getProductString(char* text) { + vst_strncpy (text, "airwindows DeRez", kVstMaxProductStrLen); return true; +} + +bool DeRez::getVendorString(char* text) { + vst_strncpy (text, "airwindows", kVstMaxVendorStrLen); return true; +} diff --git a/plugins/MacVST/DeRez/source/DeRez.h b/plugins/MacVST/DeRez/source/DeRez.h new file mode 100755 index 0000000..89338e8 --- /dev/null +++ b/plugins/MacVST/DeRez/source/DeRez.h @@ -0,0 +1,75 @@ +/* ======================================== + * DeRez - DeRez.h + * Created 8/12/11 by SPIAdmin + * Copyright (c) 2011 __MyCompanyName__, All rights reserved + * ======================================== */ + +#ifndef __DeRez_H +#define __DeRez_H + +#ifndef __audioeffect__ +#include "audioeffectx.h" +#endif + +#include <set> +#include <string> +#include <math.h> + +enum { + kParamA = 0, + kParamB = 1, + kNumParameters = 2 +}; // + +const int kNumPrograms = 0; +const int kNumInputs = 2; +const int kNumOutputs = 2; +const unsigned long kUniqueId = 'derz'; //Change this to what the AU identity is! + +class DeRez : + public AudioEffectX +{ +public: + DeRez(audioMasterCallback audioMaster); + ~DeRez(); + 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; + + long double fpNShapeLA; + long double fpNShapeLB; + long double fpNShapeRA; + long double fpNShapeRB; + bool fpFlip; + //default stuff + + double lastSampleL; + double heldSampleL; + double lastSampleR; + double heldSampleR; + double position; + double incrementA; + double incrementB; + + float A; + float B; +}; + +#endif diff --git a/plugins/MacVST/DeRez/source/DeRezProc.cpp b/plugins/MacVST/DeRez/source/DeRezProc.cpp new file mode 100755 index 0000000..0fed9b4 --- /dev/null +++ b/plugins/MacVST/DeRez/source/DeRezProc.cpp @@ -0,0 +1,320 @@ +/* ======================================== + * DeRez - DeRez.h + * Copyright (c) 2016 airwindows, All rights reserved + * ======================================== */ + +#ifndef __DeRez_H +#include "DeRez.h" +#endif + +void DeRez::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames) +{ + float* in1 = inputs[0]; + float* in2 = inputs[1]; + float* out1 = outputs[0]; + float* out2 = outputs[1]; + + double overallscale = 1.0; + overallscale /= 44100.0; + overallscale *= getSampleRate(); + long double fpOld = 0.618033988749894848204586; //golden ratio! + long double fpNew = 1.0 - fpOld; + + double targetA = pow(A,3)+0.0005; + if (targetA > 1.0) targetA = 1.0; + double soften = (1.0 + targetA)/2; + double targetB = pow(1.0-B,3) / 3; + targetA /= overallscale; + + while (--sampleFrames >= 0) + { + long double inputSampleL = *in1; + long double 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. + } + long double drySampleL = inputSampleL; + long double drySampleR = inputSampleR; + + incrementA = ((incrementA*999.0)+targetA)/1000.0; + incrementB = ((incrementB*999.0)+targetB)/1000.0; + //incrementA is the frequency derez + //incrementB is the bit depth derez + position += incrementA; + + long double outputSampleL = heldSampleL; + long double outputSampleR = heldSampleR; + if (position > 1.0) + { + position -= 1.0; + heldSampleL = (lastSampleL * position) + (inputSampleL * (1.0-position)); + outputSampleL = (outputSampleL * (1.0-soften)) + (heldSampleL * soften); + //softens the edge of the derez + heldSampleR = (lastSampleR * position) + (inputSampleR * (1.0-position)); + outputSampleR = (outputSampleR * (1.0-soften)) + (heldSampleR * soften); + //softens the edge of the derez + } + inputSampleL = outputSampleL; + inputSampleR = outputSampleR; + + long double offset; + if (incrementB > 0.0005) + { + if (inputSampleL > 0) + { + offset = inputSampleL; + while (offset > 0) {offset -= incrementB;} + inputSampleL -= offset; + //it's below 0 so subtracting adds the remainder + } + if (inputSampleR > 0) + { + offset = inputSampleR; + while (offset > 0) {offset -= incrementB;} + inputSampleR -= offset; + //it's below 0 so subtracting adds the remainder + } + + if (inputSampleL < 0) + { + offset = inputSampleL; + while (offset < 0) {offset += incrementB;} + inputSampleL -= offset; + //it's above 0 so subtracting subtracts the remainder + } + if (inputSampleR < 0) + { + offset = inputSampleR; + while (offset < 0) {offset += incrementB;} + inputSampleR -= offset; + //it's above 0 so subtracting subtracts the remainder + } + + inputSampleL *= (1.0 - incrementB); + inputSampleR *= (1.0 - incrementB); + } + + lastSampleL = drySampleL; + lastSampleR = drySampleR; + + //noise shaping to 32-bit floating point + float fpTemp; + if (fpFlip) { + fpTemp = inputSampleL; + fpNShapeLA = (fpNShapeLA*fpOld)+((inputSampleL-fpTemp)*fpNew); + inputSampleL += fpNShapeLA; + fpTemp = inputSampleR; + fpNShapeRA = (fpNShapeRA*fpOld)+((inputSampleR-fpTemp)*fpNew); + inputSampleR += fpNShapeRA; + } + else { + fpTemp = inputSampleL; + fpNShapeLB = (fpNShapeLB*fpOld)+((inputSampleL-fpTemp)*fpNew); + inputSampleL += fpNShapeLB; + fpTemp = inputSampleR; + fpNShapeRB = (fpNShapeRB*fpOld)+((inputSampleR-fpTemp)*fpNew); + inputSampleR += fpNShapeRB; + } + fpFlip = !fpFlip; + //end noise shaping on 32 bit output + + *out1 = inputSampleL; + *out2 = inputSampleR; + + *in1++; + *in2++; + *out1++; + *out2++; + } +} + +void DeRez::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames) +{ + double* in1 = inputs[0]; + double* in2 = inputs[1]; + double* out1 = outputs[0]; + double* out2 = outputs[1]; + + double overallscale = 1.0; + overallscale /= 44100.0; + overallscale *= getSampleRate(); + long double fpOld = 0.618033988749894848204586; //golden ratio! + long double fpNew = 1.0 - fpOld; + + double targetA = pow(A,3)+0.0005; + if (targetA > 1.0) targetA = 1.0; + double soften = (1.0 + targetA)/2; + double targetB = pow(1.0-B,3) / 3; + targetA /= overallscale; + + while (--sampleFrames >= 0) + { + long double inputSampleL = *in1; + long double 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. + } + long double drySampleL = inputSampleL; + long double drySampleR = inputSampleR; + + incrementA = ((incrementA*999.0)+targetA)/1000.0; + incrementB = ((incrementB*999.0)+targetB)/1000.0; + //incrementA is the frequency derez + //incrementB is the bit depth derez + position += incrementA; + + long double outputSampleL = heldSampleL; + long double outputSampleR = heldSampleR; + if (position > 1.0) + { + position -= 1.0; + heldSampleL = (lastSampleL * position) + (inputSampleL * (1.0-position)); + outputSampleL = (outputSampleL * (1.0-soften)) + (heldSampleL * soften); + //softens the edge of the derez + heldSampleR = (lastSampleR * position) + (inputSampleR * (1.0-position)); + outputSampleR = (outputSampleR * (1.0-soften)) + (heldSampleR * soften); + //softens the edge of the derez + } + inputSampleL = outputSampleL; + inputSampleR = outputSampleR; + + long double offset; + if (incrementB > 0.0005) + { + if (inputSampleL > 0) + { + offset = inputSampleL; + while (offset > 0) {offset -= incrementB;} + inputSampleL -= offset; + //it's below 0 so subtracting adds the remainder + } + if (inputSampleR > 0) + { + offset = inputSampleR; + while (offset > 0) {offset -= incrementB;} + inputSampleR -= offset; + //it's below 0 so subtracting adds the remainder + } + + if (inputSampleL < 0) + { + offset = inputSampleL; + while (offset < 0) {offset += incrementB;} + inputSampleL -= offset; + //it's above 0 so subtracting subtracts the remainder + } + if (inputSampleR < 0) + { + offset = inputSampleR; + while (offset < 0) {offset += incrementB;} + inputSampleR -= offset; + //it's above 0 so subtracting subtracts the remainder + } + + inputSampleL *= (1.0 - incrementB); + inputSampleR *= (1.0 - incrementB); + } + + lastSampleL = drySampleL; + lastSampleR = drySampleR; + + //noise shaping to 64-bit floating point + double fpTemp; + if (fpFlip) { + fpTemp = inputSampleL; + fpNShapeLA = (fpNShapeLA*fpOld)+((inputSampleL-fpTemp)*fpNew); + inputSampleL += fpNShapeLA; + fpTemp = inputSampleR; + fpNShapeRA = (fpNShapeRA*fpOld)+((inputSampleR-fpTemp)*fpNew); + inputSampleR += fpNShapeRA; + } + else { + fpTemp = inputSampleL; + fpNShapeLB = (fpNShapeLB*fpOld)+((inputSampleL-fpTemp)*fpNew); + inputSampleL += fpNShapeLB; + fpTemp = inputSampleR; + fpNShapeRB = (fpNShapeRB*fpOld)+((inputSampleR-fpTemp)*fpNew); + inputSampleR += fpNShapeRB; + } + fpFlip = !fpFlip; + //end noise shaping on 64 bit output + + *out1 = inputSampleL; + *out2 = inputSampleR; + + *in1++; + *in2++; + *out1++; + *out2++; + } +}
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