/*
*	File:		YLowpass.h
*	
*	Version:	1.0
* 
*	Created:	5/1/21
*	
*	Copyright:  Copyright © 2021 Airwindows, Airwindows uses the MIT license
* 
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#include "AUEffectBase.h"
#include "YLowpassVersion.h"

#if AU_DEBUG_DISPATCHER
	#include "AUDebugDispatcher.h"
#endif


#ifndef __YLowpass_h__
#define __YLowpass_h__


#pragma mark ____YLowpass Parameters

// parameters
static const float kDefaultValue_ParamOne = 0.1;
static const float kDefaultValue_ParamTwo = 0.5;
static const float kDefaultValue_ParamThree = 0.1;
static const float kDefaultValue_ParamFour = 0.1;
static const float kDefaultValue_ParamFive = 1.0;
static const float kDefaultValue_ParamSix = 1.0;

static CFStringRef kParameterOneName = CFSTR("Gain");
static CFStringRef kParameterTwoName = CFSTR("Freq");
static CFStringRef kParameterThreeName = CFSTR("Reson8");
static CFStringRef kParameterFourName = CFSTR("ResEdge");
static CFStringRef kParameterFiveName = CFSTR("Output");
static CFStringRef kParameterSixName = CFSTR("Dry/Wet");
//Alter the name if desired, but using the plugin name is a start

enum {
	kParam_One =0,
	kParam_Two =1,
	kParam_Three =2,
	kParam_Four =3,
	kParam_Five =4,
	kParam_Six =5,
	//Add your parameters here...
	kNumberOfParameters=6
};

#pragma mark ____YLowpass
class YLowpass : public AUEffectBase
{
public:
	YLowpass(AudioUnit component);
#if AU_DEBUG_DISPATCHER
	virtual ~YLowpass () { delete mDebugDispatcher; }
#endif
	
	virtual AUKernelBase *		NewKernel() { return new YLowpassKernel(this); }
	
	virtual	ComponentResult		GetParameterValueStrings(AudioUnitScope			inScope,
														 AudioUnitParameterID		inParameterID,
														 CFArrayRef *			outStrings);
    
	virtual	ComponentResult		GetParameterInfo(AudioUnitScope			inScope,
												 AudioUnitParameterID	inParameterID,
												 AudioUnitParameterInfo	&outParameterInfo);
    
	virtual ComponentResult		GetPropertyInfo(AudioUnitPropertyID		inID,
												AudioUnitScope			inScope,
												AudioUnitElement		inElement,
												UInt32 &			outDataSize,
												Boolean	&			outWritable );
	
	virtual ComponentResult		GetProperty(AudioUnitPropertyID inID,
											AudioUnitScope 		inScope,
											AudioUnitElement 		inElement,
											void *			outData);
	
	virtual ComponentResult    Initialize();
	virtual bool				SupportsTail () { return true; }
    virtual Float64				GetTailTime() {return (1.0/GetSampleRate())*0.0;} //in SECONDS! gsr * a number = in samples
    virtual Float64				GetLatency() {return (1.0/GetSampleRate())*0.0;}	// in SECONDS! gsr * a number = in samples
	
	/*! @method Version */
	virtual ComponentResult		Version() { return kYLowpassVersion; }
	
    
	
protected:
		class YLowpassKernel : public AUKernelBase		// most of the real work happens here
	{
public:
		YLowpassKernel(AUEffectBase *inAudioUnit )
		: AUKernelBase(inAudioUnit)
	{
	}
		
		// *Required* overides for the process method for this effect
		// processes one channel of interleaved samples
        virtual void 		Process(	const Float32 	*inSourceP,
										Float32		 	*inDestP,
										UInt32 			inFramesToProcess,
										UInt32			inNumChannels,
										bool			&ioSilence);
		
        virtual void		Reset();
		
		private:
		
		enum {
			biq_freq,
			biq_reso,
			biq_a0,
			biq_a1,
			biq_a2,
			biq_b1,
			biq_b2,
			biq_aA0,
			biq_aA1,
			biq_aA2,
			biq_bA1,
			biq_bA2,
			biq_aB0,
			biq_aB1,
			biq_aB2,
			biq_bB1,
			biq_bB2,
			biq_sL1,
			biq_sL2,
			biq_sR1,
			biq_sR2,
			biq_total
		}; //coefficient interpolating biquad filter, stereo
		double biquad[biq_total];
		//double biquadC[biq_total];
		//double biquadD[biq_total];
		double powFactorA;
		double powFactorB;
		double inTrimA;
		double inTrimB;
		double outTrimA;
		double outTrimB;
		
		enum {
			fix_freq,
			fix_reso,
			fix_a0,
			fix_a1,
			fix_a2,
			fix_b1,
			fix_b2,
			fix_sL1,
			fix_sL2,
			fix_sR1,
			fix_sR2,
			fix_total
		}; //fixed frequency biquad filter for ultrasonics, stereo
		double fixA[fix_total];
		double fixB[fix_total];
		
		uint32_t fpd;
	};
};

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


#endif