From 337cd28d743694cf2804236096c338b3d0b3546d Mon Sep 17 00:00:00 2001 From: Chris Johnson Date: Sun, 15 Dec 2019 12:49:52 -0500 Subject: Coils --- plugins/LinuxVST/src/Coils/Coils.cpp | 135 ++++++++++++++++++++++++ plugins/LinuxVST/src/Coils/Coils.h | 67 ++++++++++++ plugins/LinuxVST/src/Coils/CoilsProc.cpp | 174 +++++++++++++++++++++++++++++++ 3 files changed, 376 insertions(+) create mode 100755 plugins/LinuxVST/src/Coils/Coils.cpp create mode 100755 plugins/LinuxVST/src/Coils/Coils.h create mode 100755 plugins/LinuxVST/src/Coils/CoilsProc.cpp (limited to 'plugins/LinuxVST/src') diff --git a/plugins/LinuxVST/src/Coils/Coils.cpp b/plugins/LinuxVST/src/Coils/Coils.cpp new file mode 100755 index 0000000..b3cc04a --- /dev/null +++ b/plugins/LinuxVST/src/Coils/Coils.cpp @@ -0,0 +1,135 @@ +/* ======================================== + * Coils - Coils.h + * Copyright (c) 2016 airwindows, All rights reserved + * ======================================== */ + +#ifndef __Coils_H +#include "Coils.h" +#endif + +AudioEffect* createEffectInstance(audioMasterCallback audioMaster) {return new Coils(audioMaster);} + +Coils::Coils(audioMasterCallback audioMaster) : + AudioEffectX(audioMaster, kNumPrograms, kNumParameters) +{ + A = 0.0; + B = 0.5; + C = 1.0; + for (int x = 0; x < 9; x++) {figureL[x] = 0.0;figureR[x] = 0.0;} + fpd = 17; + //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 +} + +Coils::~Coils() {} +VstInt32 Coils::getVendorVersion () {return 1000;} +void Coils::setProgramName(char *name) {vst_strncpy (_programName, name, kVstMaxProgNameLen);} +void Coils::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 Coils::getChunk (void** data, bool isPreset) +{ + float *chunkData = (float *)calloc(kNumParameters, sizeof(float)); + chunkData[0] = A; + chunkData[1] = B; + chunkData[2] = C; + /* 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 Coils::setChunk (void* data, VstInt32 byteSize, bool isPreset) +{ + float *chunkData = (float *)data; + A = pinParameter(chunkData[0]); + B = pinParameter(chunkData[1]); + C = pinParameter(chunkData[2]); + /* 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 Coils::setParameter(VstInt32 index, float value) { + switch (index) { + case kParamA: A = value; break; + case kParamB: B = value; break; + case kParamC: C = value; break; + default: throw; // unknown parameter, shouldn't happen! + } +} + +float Coils::getParameter(VstInt32 index) { + switch (index) { + case kParamA: return A; break; + case kParamB: return B; break; + case kParamC: return C; 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 Coils::getParameterName(VstInt32 index, char *text) { + switch (index) { + case kParamA: vst_strncpy (text, "Saturat", kVstMaxParamStrLen); break; + case kParamB: vst_strncpy (text, "Core DC", kVstMaxParamStrLen); break; + case kParamC: vst_strncpy (text, "Dry/Wet", kVstMaxParamStrLen); break; + default: break; // unknown parameter, shouldn't happen! + } //this is our labels for displaying in the VST host +} + +void Coils::getParameterDisplay(VstInt32 index, char *text) { + switch (index) { + case kParamA: float2string (A, text, kVstMaxParamStrLen); break; + case kParamB: float2string ((B*2.0)-1.0, text, kVstMaxParamStrLen); break; + case kParamC: float2string (C, text, kVstMaxParamStrLen); break; + default: break; // unknown parameter, shouldn't happen! + } //this displays the values and handles 'popups' where it's discrete choices +} + +void Coils::getParameterLabel(VstInt32 index, char *text) { + switch (index) { + case kParamA: vst_strncpy (text, "", kVstMaxParamStrLen); break; + case kParamB: vst_strncpy (text, "", kVstMaxParamStrLen); break; + case kParamC: vst_strncpy (text, "", kVstMaxParamStrLen); break; + default: break; // unknown parameter, shouldn't happen! + } +} + +VstInt32 Coils::canDo(char *text) +{ return (_canDo.find(text) == _canDo.end()) ? -1: 1; } // 1 = yes, -1 = no, 0 = don't know + +bool Coils::getEffectName(char* name) { + vst_strncpy(name, "Coils", kVstMaxProductStrLen); return true; +} + +VstPlugCategory Coils::getPlugCategory() {return kPlugCategEffect;} + +bool Coils::getProductString(char* text) { + vst_strncpy (text, "airwindows Coils", kVstMaxProductStrLen); return true; +} + +bool Coils::getVendorString(char* text) { + vst_strncpy (text, "airwindows", kVstMaxVendorStrLen); return true; +} diff --git a/plugins/LinuxVST/src/Coils/Coils.h b/plugins/LinuxVST/src/Coils/Coils.h new file mode 100755 index 0000000..08171fb --- /dev/null +++ b/plugins/LinuxVST/src/Coils/Coils.h @@ -0,0 +1,67 @@ +/* ======================================== + * Coils - Coils.h + * Created 8/12/11 by SPIAdmin + * Copyright (c) 2011 __MyCompanyName__, All rights reserved + * ======================================== */ + +#ifndef __Coils_H +#define __Coils_H + +#ifndef __audioeffect__ +#include "audioeffectx.h" +#endif + +#include +#include +#include + +enum { + kParamA = 0, + kParamB = 1, + kParamC = 2, + kNumParameters = 3 +}; // + +const int kNumPrograms = 0; +const int kNumInputs = 2; +const int kNumOutputs = 2; +const unsigned long kUniqueId = 'coil'; //Change this to what the AU identity is! + +class Coils : + public AudioEffectX +{ +public: + Coils(audioMasterCallback audioMaster); + ~Coils(); + 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 figureL[9]; + long double figureR[9]; + uint32_t fpd; + //default stuff + + float A; + float B; + float C; +}; + +#endif diff --git a/plugins/LinuxVST/src/Coils/CoilsProc.cpp b/plugins/LinuxVST/src/Coils/CoilsProc.cpp new file mode 100755 index 0000000..cc0456a --- /dev/null +++ b/plugins/LinuxVST/src/Coils/CoilsProc.cpp @@ -0,0 +1,174 @@ +/* ======================================== + * Coils - Coils.h + * Copyright (c) 2016 airwindows, All rights reserved + * ======================================== */ + +#ifndef __Coils_H +#include "Coils.h" +#endif + +void Coils::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames) +{ + float* in1 = inputs[0]; + float* in2 = inputs[1]; + float* out1 = outputs[0]; + float* out2 = outputs[1]; + + //[0] is frequency: 0.000001 to 0.499999 is near-zero to near-Nyquist + //[1] is resonance, 0.7071 is Butterworth. Also can't be zero + double boost = 1.0-pow(A,2); + if (boost < 0.001) boost = 0.001; //there's a divide, we can't have this be zero + figureL[0] = figureR[0] = 600.0/getSampleRate(); //fixed frequency, 600hz + figureL[1] = figureR[1] = 0.023; //resonance + double offset = B; + double wet = C; + double K = tan(M_PI * figureR[0]); + double norm = 1.0 / (1.0 + K / figureR[1] + K * K); + figureL[2] = figureR[2] = K / figureR[1] * norm; + figureL[4] = figureR[4] = -figureR[2]; + figureL[5] = figureR[5] = 2.0 * (K * K - 1.0) * norm; + figureL[6] = figureR[6] = (1.0 - K / figureR[1] + K * K) * norm; + + 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 tempSample = (inputSample * figure[2]) + figure[7]; + //figure[7] = -(tempSample * figure[5]) + figure[8]; + //figure[8] = (inputSample * figure[4]) - (tempSample * figure[6]); + //inputSample = tempSample + sin(drySample-tempSample); + //or + //inputSample = tempSample + ((sin(((drySample-tempSample)/boost)+offset)-offset)*boost); + // + //given a bandlimited inputSample, freq 600hz and Q of 0.023, this restores a lot of + //the full frequencies but distorts like a real transformer. Purest case, and since + //we are not using a high Q we can remove the extra sin/asin on the biquad. + + + long double tempSample = (inputSampleL * figureL[2]) + figureL[7]; + figureL[7] = -(tempSample * figureL[5]) + figureL[8]; + figureL[8] = (inputSampleL * figureL[4]) - (tempSample * figureL[6]); + inputSampleL = tempSample + ((sin(((drySampleL-tempSample)/boost)+offset)-offset)*boost); + //given a bandlimited inputSample, freq 600hz and Q of 0.023, this restores a lot of + //the full frequencies but distorts like a real transformer. Since + //we are not using a high Q we can remove the extra sin/asin on the biquad. + + tempSample = (inputSampleR * figureR[2]) + figureR[7]; + figureR[7] = -(tempSample * figureR[5]) + figureR[8]; + figureR[8] = (inputSampleR * figureR[4]) - (tempSample * figureR[6]); + inputSampleR = tempSample + ((sin(((drySampleR-tempSample)/boost)+offset)-offset)*boost); + //given a bandlimited inputSample, freq 600hz and Q of 0.023, this restores a lot of + //the full frequencies but distorts like a real transformer. Since + //we are not using a high Q we can remove the extra sin/asin on the biquad. + + 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 Coils::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames) +{ + double* in1 = inputs[0]; + double* in2 = inputs[1]; + double* out1 = outputs[0]; + double* out2 = outputs[1]; + + //[0] is frequency: 0.000001 to 0.499999 is near-zero to near-Nyquist + //[1] is resonance, 0.7071 is Butterworth. Also can't be zero + double boost = 1.0-pow(A,2); + if (boost < 0.001) boost = 0.001; //there's a divide, we can't have this be zero + figureL[0] = figureR[0] = 600.0/getSampleRate(); //fixed frequency, 600hz + figureL[1] = figureR[1] = 0.023; //resonance + double offset = B; + double wet = C; + double K = tan(M_PI * figureR[0]); + double norm = 1.0 / (1.0 + K / figureR[1] + K * K); + figureL[2] = figureR[2] = K / figureR[1] * norm; + figureL[4] = figureR[4] = -figureR[2]; + figureL[5] = figureR[5] = 2.0 * (K * K - 1.0) * norm; + figureL[6] = figureR[6] = (1.0 - K / figureR[1] + K * K) * norm; + + 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 tempSample = (inputSample * figure[2]) + figure[7]; + //figure[7] = -(tempSample * figure[5]) + figure[8]; + //figure[8] = (inputSample * figure[4]) - (tempSample * figure[6]); + //inputSample = tempSample + sin(drySample-tempSample); + //or + //inputSample = tempSample + ((sin(((drySample-tempSample)/boost)+offset)-offset)*boost); + // + //given a bandlimited inputSample, freq 600hz and Q of 0.023, this restores a lot of + //the full frequencies but distorts like a real transformer. Purest case, and since + //we are not using a high Q we can remove the extra sin/asin on the biquad. + + + long double tempSample = (inputSampleL * figureL[2]) + figureL[7]; + figureL[7] = -(tempSample * figureL[5]) + figureL[8]; + figureL[8] = (inputSampleL * figureL[4]) - (tempSample * figureL[6]); + inputSampleL = tempSample + ((sin(((drySampleL-tempSample)/boost)+offset)-offset)*boost); + //given a bandlimited inputSample, freq 600hz and Q of 0.023, this restores a lot of + //the full frequencies but distorts like a real transformer. Since + //we are not using a high Q we can remove the extra sin/asin on the biquad. + + tempSample = (inputSampleR * figureR[2]) + figureR[7]; + figureR[7] = -(tempSample * figureR[5]) + figureR[8]; + figureR[8] = (inputSampleR * figureR[4]) - (tempSample * figureR[6]); + inputSampleR = tempSample + ((sin(((drySampleR-tempSample)/boost)+offset)-offset)*boost); + //given a bandlimited inputSample, freq 600hz and Q of 0.023, this restores a lot of + //the full frequencies but distorts like a real transformer. Since + //we are not using a high Q we can remove the extra sin/asin on the biquad. + + 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++; + } +} -- cgit v1.2.3