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/* ========================================
* Lowpass - Lowpass.h
* Copyright (c) 2016 airwindows, All rights reserved
* ======================================== */
#ifndef __Lowpass_H
#include "Lowpass.h"
#endif
AudioEffect* createEffectInstance(audioMasterCallback audioMaster) {return new Lowpass(audioMaster);}
Lowpass::Lowpass(audioMasterCallback audioMaster) :
AudioEffectX(audioMaster, kNumPrograms, kNumParameters)
{
A = 1.0;
B = 0.5;
C = 1.0;
iirSampleAL = 0.0;
iirSampleBL = 0.0;
iirSampleAR = 0.0;
iirSampleBR = 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
}
Lowpass::~Lowpass() {}
VstInt32 Lowpass::getVendorVersion () {return 1000;}
void Lowpass::setProgramName(char *name) {vst_strncpy (_programName, name, kVstMaxProgNameLen);}
void Lowpass::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 Lowpass::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 Lowpass::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 Lowpass::setParameter(VstInt32 index, float value) {
switch (index) {
case kParamA: A = value; break;
case kParamB: B = value; break; //percent. Using this value, it'll be 0-100 everywhere
case kParamC: C = value; break;
default: throw; // unknown parameter, shouldn't happen!
}
}
float Lowpass::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 Lowpass::getParameterName(VstInt32 index, char *text) {
switch (index) {
case kParamA: vst_strncpy (text, "Lowpass", kVstMaxParamStrLen); break;
case kParamB: vst_strncpy (text, "Soft/Hard", 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 Lowpass::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; //also display 0-1 as percent
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 Lowpass::getParameterLabel(VstInt32 index, char *text) {
switch (index) {
case kParamA: vst_strncpy (text, " ", kVstMaxParamStrLen); break;
case kParamB: vst_strncpy (text, " ", kVstMaxParamStrLen); break; //the percent
case kParamC: vst_strncpy (text, " ", kVstMaxParamStrLen); break;
default: break; // unknown parameter, shouldn't happen!
}
}
VstInt32 Lowpass::canDo(char *text)
{ return (_canDo.find(text) == _canDo.end()) ? -1: 1; } // 1 = yes, -1 = no, 0 = don't know
bool Lowpass::getEffectName(char* name) {
vst_strncpy(name, "Lowpass", kVstMaxProductStrLen); return true;
}
VstPlugCategory Lowpass::getPlugCategory() {return kPlugCategEffect;}
bool Lowpass::getProductString(char* text) {
vst_strncpy (text, "airwindows Lowpass", kVstMaxProductStrLen); return true;
}
bool Lowpass::getVendorString(char* text) {
vst_strncpy (text, "airwindows", kVstMaxVendorStrLen); return true;
}
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