airwindows/plugins/WinVST/Slew2/Slew2.cpp

/* ========================================
 *  Slew2 - Slew2.h
 *  Copyright (c) 2016 airwindows, Airwindows uses the MIT license
 * ======================================== */

#ifndef __Slew2_H
#include "Slew2.h"
#endif

AudioEffect* createEffectInstance(audioMasterCallback audioMaster) {return new Slew2(audioMaster);}

Slew2::Slew2(audioMasterCallback audioMaster) :
    AudioEffectX(audioMaster, kNumPrograms, kNumParameters)
{
	A = 0.0;

	LataLast3Sample = LataLast2Sample = LataLast1Sample = 0.0;
	LataHalfwaySample = LataHalfDrySample = LataHalfDiffSample = 0.0;
	LataA = LataB = LataC = LataDrySample = LataDiffSample = LataPrevDiffSample = 0.0;
	LataUpsampleHighTweak = 0.0414213562373095048801688; //more adds treble to upsampling
	LataDecay = 0.915965594177219015; //Catalan's constant, more adds focus and clarity
	lastSampleL = 0.0;

	RataLast3Sample = RataLast2Sample = RataLast1Sample = 0.0;
	RataHalfwaySample = RataHalfDrySample = RataHalfDiffSample = 0.0;
	RataA = RataB = RataC = RataDrySample = RataDiffSample = RataPrevDiffSample = 0.0;
	RataUpsampleHighTweak = 0.0414213562373095048801688; //more adds treble to upsampling
	RataDecay = 0.915965594177219015; //CRatalan's constant, more adds focus and clarity
	LataFlip = false; //end reset of antialias parameters
	RataFlip = false; //end reset of antialias parameters
	lastSampleR = 0.0;
	//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
}

Slew2::~Slew2() {}
VstInt32 Slew2::getVendorVersion () {return 1000;}
void Slew2::setProgramName(char *name) {vst_strncpy (_programName, name, kVstMaxProgNameLen);}
void Slew2::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 Slew2::getChunk (void** data, bool isPreset)
{
	float *chunkData = (float *)calloc(kNumParameters, sizeof(float));
	chunkData[0] = A;
	/* 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 Slew2::setChunk (void* data, VstInt32 byteSize, bool isPreset)
{	
	float *chunkData = (float *)data;
	A = pinParameter(chunkData[0]);
	/* 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 Slew2::setParameter(VstInt32 index, float value) {
    switch (index) {
        case kParamA: A = value; break;
        default: throw; // unknown parameter, shouldn't happen!
    }
	//we can also set other defaults here, and do calculations that only have to happen
	//once when parameters actually change. Here is the 'popup' setting its (global) values.
	//variables can also be set in the processreplacing loop, and there they'll be set every buffersize
	//here they're set when a parameter's actually changed, which should be less frequent, but
	//you must use global variables in the Slew2.h file to do it.
}

float Slew2::getParameter(VstInt32 index) {
    switch (index) {
        case kParamA: return A; 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 Slew2::getParameterName(VstInt32 index, char *text) {
    switch (index) {
        case kParamA: vst_strncpy (text, "Clamping", kVstMaxParamStrLen); break;
        default: break; // unknown parameter, shouldn't happen!
    } //this is our labels for displaying in the VST host
}

void Slew2::getParameterDisplay(VstInt32 index, char *text) {
    switch (index) {
        case kParamA: float2string (A, text, kVstMaxParamStrLen); break;
        default: break; // unknown parameter, shouldn't happen!
	} //this displays the values and handles 'popups' where it's discrete choices
}

void Slew2::getParameterLabel(VstInt32 index, char *text) {
    switch (index) {
        case kParamA: vst_strncpy (text, " ", kVstMaxParamStrLen); break;
        default: break; // unknown parameter, shouldn't happen!
    }
}

VstInt32 Slew2::canDo(char *text) 
{ return (_canDo.find(text) == _canDo.end()) ? -1: 1; } // 1 = yes, -1 = no, 0 = don't know

bool Slew2::getEffectName(char* name) {
    vst_strncpy(name, "Slew2", kVstMaxProductStrLen); return true;
}

VstPlugCategory Slew2::getPlugCategory() {return kPlugCategEffect;}

bool Slew2::getProductString(char* text) {
  	vst_strncpy (text, "airwindows Slew2", kVstMaxProductStrLen); return true;
}

bool Slew2::getVendorString(char* text) {
  	vst_strncpy (text, "airwindows", kVstMaxVendorStrLen); return true;
}