From edea4b6aa5f570c4ddcce158a2d15bc32851de89 Mon Sep 17 00:00:00 2001 From: Chris Johnson Date: Sun, 3 May 2020 21:03:34 -0400 Subject: PurestFade --- plugins/LinuxVST/src/PurestFade/PurestFade.cpp | 130 +++++++++++++++ plugins/LinuxVST/src/PurestFade/PurestFade.h | 68 ++++++++ plugins/LinuxVST/src/PurestFade/PurestFadeProc.cpp | 185 +++++++++++++++++++++ 3 files changed, 383 insertions(+) create mode 100755 plugins/LinuxVST/src/PurestFade/PurestFade.cpp create mode 100755 plugins/LinuxVST/src/PurestFade/PurestFade.h create mode 100755 plugins/LinuxVST/src/PurestFade/PurestFadeProc.cpp (limited to 'plugins/LinuxVST/src') diff --git a/plugins/LinuxVST/src/PurestFade/PurestFade.cpp b/plugins/LinuxVST/src/PurestFade/PurestFade.cpp new file mode 100755 index 0000000..5c0fd45 --- /dev/null +++ b/plugins/LinuxVST/src/PurestFade/PurestFade.cpp @@ -0,0 +1,130 @@ +/* ======================================== + * PurestFade - PurestFade.h + * Copyright (c) 2016 airwindows, All rights reserved + * ======================================== */ + +#ifndef __PurestFade_H +#include "PurestFade.h" +#endif + +AudioEffect* createEffectInstance(audioMasterCallback audioMaster) {return new PurestFade(audioMaster);} + +PurestFade::PurestFade(audioMasterCallback audioMaster) : + AudioEffectX(audioMaster, kNumPrograms, kNumParameters) +{ + A = 0.5; + B = 1.0; + gainchase = -90.0; + settingchase = -90.0; + gainBchase = -90.0; + chasespeed = 350.0; + 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 +} + +PurestFade::~PurestFade() {} +VstInt32 PurestFade::getVendorVersion () {return 1000;} +void PurestFade::setProgramName(char *name) {vst_strncpy (_programName, name, kVstMaxProgNameLen);} +void PurestFade::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 PurestFade::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 PurestFade::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 PurestFade::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 PurestFade::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 PurestFade::getParameterName(VstInt32 index, char *text) { + switch (index) { + case kParamA: vst_strncpy (text, "Gain", kVstMaxParamStrLen); break; + case kParamB: vst_strncpy (text, "Fade", kVstMaxParamStrLen); break; + default: break; // unknown parameter, shouldn't happen! + } //this is our labels for displaying in the VST host +} + +void PurestFade::getParameterDisplay(VstInt32 index, char *text) { + switch (index) { + case kParamA: float2string ((A*80.0)-40.0, 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 PurestFade::getParameterLabel(VstInt32 index, char *text) { + switch (index) { + case kParamA: vst_strncpy (text, "dB", kVstMaxParamStrLen); break; + case kParamB: vst_strncpy (text, " ", kVstMaxParamStrLen); break; + default: break; // unknown parameter, shouldn't happen! + } +} + +VstInt32 PurestFade::canDo(char *text) +{ return (_canDo.find(text) == _canDo.end()) ? -1: 1; } // 1 = yes, -1 = no, 0 = don't know + +bool PurestFade::getEffectName(char* name) { + vst_strncpy(name, "PurestFade", kVstMaxProductStrLen); return true; +} + +VstPlugCategory PurestFade::getPlugCategory() {return kPlugCategEffect;} + +bool PurestFade::getProductString(char* text) { + vst_strncpy (text, "airwindows PurestFade", kVstMaxProductStrLen); return true; +} + +bool PurestFade::getVendorString(char* text) { + vst_strncpy (text, "airwindows", kVstMaxVendorStrLen); return true; +} diff --git a/plugins/LinuxVST/src/PurestFade/PurestFade.h b/plugins/LinuxVST/src/PurestFade/PurestFade.h new file mode 100755 index 0000000..d107d1b --- /dev/null +++ b/plugins/LinuxVST/src/PurestFade/PurestFade.h @@ -0,0 +1,68 @@ +/* ======================================== + * PurestFade - PurestFade.h + * Created 8/12/11 by SPIAdmin + * Copyright (c) 2011 __MyCompanyName__, All rights reserved + * ======================================== */ + +#ifndef __PurestFade_H +#define __PurestFade_H + +#ifndef __audioeffect__ +#include "audioeffectx.h" +#endif + +#include +#include +#include + +enum { + kParamA = 0, + kParamB = 1, + kNumParameters = 2 +}; // + +const int kNumPrograms = 0; +const int kNumInputs = 2; +const int kNumOutputs = 2; +const unsigned long kUniqueId = 'purf'; //Change this to what the AU identity is! + +class PurestFade : + public AudioEffectX +{ +public: + PurestFade(audioMasterCallback audioMaster); + ~PurestFade(); + 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; + + uint32_t fpd; + //default stuff + double gainchase; + double settingchase; + double gainBchase; + double chasespeed; + + float A; + float B; + +}; + +#endif diff --git a/plugins/LinuxVST/src/PurestFade/PurestFadeProc.cpp b/plugins/LinuxVST/src/PurestFade/PurestFadeProc.cpp new file mode 100755 index 0000000..ef2f9fc --- /dev/null +++ b/plugins/LinuxVST/src/PurestFade/PurestFadeProc.cpp @@ -0,0 +1,185 @@ +/* ======================================== + * PurestFade - PurestFade.h + * Copyright (c) 2016 airwindows, All rights reserved + * ======================================== */ + +#ifndef __PurestFade_H +#include "PurestFade.h" +#endif + +void PurestFade::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames) +{ + float* in1 = inputs[0]; + float* in2 = inputs[1]; + float* out1 = outputs[0]; + float* out2 = outputs[1]; + + double inputgain = (A * 80.0)-40.0; + if (settingchase != inputgain) { + chasespeed *= 2.0; + settingchase = inputgain; + //increment the slowness for each fader movement + //continuous alteration makes it react smoother + //sudden jump to setting, not so much + } + if (chasespeed > 2500.0) chasespeed = 2500.0; + //bail out if it's too extreme + if (gainchase < -60.0) { + gainchase = pow(10.0,inputgain/20.0); + //shouldn't even be a negative number + //this is about starting at whatever's set, when + //plugin is instantiated. + //Otherwise it's the target, in dB. + } + long double targetgain; + //done with top controller + long double targetBgain = B; + if (gainBchase < 0.0) gainBchase = targetBgain; + //this one is not a dB value, but straight multiplication + //done with slow fade controller + + long double fadeSpeed = targetBgain; + if (fadeSpeed < 0.0027) fadeSpeed = 0.0027; //minimum fade speed + fadeSpeed = ((getSampleRate()*0.004) / fadeSpeed); + //this will tend to be much slower than PurestGain, and also adapt to sample rates + + long double outputgain; + + 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; + + targetgain = pow(10.0,settingchase/20.0); + //now we have the target in our temp variable + + chasespeed *= 0.9999; + chasespeed -= 0.01; + if (chasespeed < 350.0) chasespeed = 350.0; + //we have our chase speed compensated for recent fader activity + + gainchase = (((gainchase*chasespeed)+targetgain)/(chasespeed+1.0)); + //gainchase is chasing the target, as a simple multiply gain factor + + gainBchase = (((gainBchase*fadeSpeed)+targetBgain)/(fadeSpeed+1.0)); + //gainchase is chasing the target, as a simple multiply gain factor + + outputgain = gainchase * gainBchase; + //directly multiply the dB gain by the straight multiply gain + + if (1.0 == outputgain) + { + *out1 = *in1; + *out2 = *in2; + } else { + inputSampleL *= outputgain; + inputSampleR *= outputgain; + + //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 PurestFade::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames) +{ + double* in1 = inputs[0]; + double* in2 = inputs[1]; + double* out1 = outputs[0]; + double* out2 = outputs[1]; + + double inputgain = (A * 80.0)-40.0; + if (settingchase != inputgain) { + chasespeed *= 2.0; + settingchase = inputgain; + //increment the slowness for each fader movement + //continuous alteration makes it react smoother + //sudden jump to setting, not so much + } + if (chasespeed > 2500.0) chasespeed = 2500.0; + //bail out if it's too extreme + if (gainchase < -60.0) { + gainchase = pow(10.0,inputgain/20.0); + //shouldn't even be a negative number + //this is about starting at whatever's set, when + //plugin is instantiated. + //Otherwise it's the target, in dB. + } + long double targetgain; + //done with top controller + long double targetBgain = B; + if (gainBchase < 0.0) gainBchase = targetBgain; + //this one is not a dB value, but straight multiplication + //done with slow fade controller + + long double fadeSpeed = targetBgain; + if (fadeSpeed < 0.0027) fadeSpeed = 0.0027; //minimum fade speed + fadeSpeed = ((getSampleRate()*0.004) / fadeSpeed); + //this will tend to be much slower than PurestGain, and also adapt to sample rates + + long double outputgain; + + 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; + + targetgain = pow(10.0,settingchase/20.0); + //now we have the target in our temp variable + + chasespeed *= 0.9999; + chasespeed -= 0.01; + if (chasespeed < 350.0) chasespeed = 350.0; + //we have our chase speed compensated for recent fader activity + + gainchase = (((gainchase*chasespeed)+targetgain)/(chasespeed+1.0)); + //gainchase is chasing the target, as a simple multiply gain factor + + gainBchase = (((gainBchase*fadeSpeed)+targetBgain)/(fadeSpeed+1.0)); + //gainchase is chasing the target, as a simple multiply gain factor + + outputgain = gainchase * gainBchase; + //directly multiply the dB gain by the straight multiply gain + + if (1.0 == outputgain) + { + *out1 = *in1; + *out2 = *in2; + } else { + inputSampleL *= outputgain; + inputSampleR *= outputgain; + + //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