/*
*	File:		Pafnuty2.cpp
*	
*	Version:	1.0
* 
*	Created:	1/20/23
*	
*	Copyright:  Copyright © 2023 Airwindows, Airwindows uses the MIT license
* 
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/*=============================================================================
	Pafnuty2.cpp
	
=============================================================================*/
#include "Pafnuty2.h"


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

COMPONENT_ENTRY(Pafnuty2)


//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//	Pafnuty2::Pafnuty2
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Pafnuty2::Pafnuty2(AudioUnit component)
	: AUEffectBase(component)
{
	CreateElements();
	Globals()->UseIndexedParameters(kNumberOfParameters);
	SetParameter(kParam_One, kDefaultValue_ParamOne );
	SetParameter(kParam_Two, kDefaultValue_ParamTwo );
	SetParameter(kParam_Three, kDefaultValue_ParamThree );
	SetParameter(kParam_Four, kDefaultValue_ParamFour );
	SetParameter(kParam_Five, kDefaultValue_ParamFive );
	SetParameter(kParam_Six, kDefaultValue_ParamSix );
	SetParameter(kParam_Seven, kDefaultValue_ParamSeven );
	SetParameter(kParam_Eight, kDefaultValue_ParamEight );
	SetParameter(kParam_Nine, kDefaultValue_ParamNine );
	SetParameter(kParam_Ten, kDefaultValue_ParamTen );
         
#if AU_DEBUG_DISPATCHER
	mDebugDispatcher = new AUDebugDispatcher (this);
#endif
	
}


//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//	Pafnuty2::GetParameterValueStrings
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult			Pafnuty2::GetParameterValueStrings(AudioUnitScope		inScope,
                                                                AudioUnitParameterID	inParameterID,
                                                                CFArrayRef *		outStrings)
{
        
    return kAudioUnitErr_InvalidProperty;
}



//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//	Pafnuty2::GetParameterInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult			Pafnuty2::GetParameterInfo(AudioUnitScope		inScope,
                                                        AudioUnitParameterID	inParameterID,
                                                        AudioUnitParameterInfo	&outParameterInfo )
{
	ComponentResult result = noErr;

	outParameterInfo.flags = 	kAudioUnitParameterFlag_IsWritable
						|		kAudioUnitParameterFlag_IsReadable;
    
    if (inScope == kAudioUnitScope_Global) {
        switch(inParameterID)
        {
           case kParam_One:
                AUBase::FillInParameterName (outParameterInfo, kParameterOneName, false);
                outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
                outParameterInfo.minValue = -1.0;
                outParameterInfo.maxValue = 1.0;
                outParameterInfo.defaultValue = kDefaultValue_ParamOne;
                break;
            case kParam_Two:
                AUBase::FillInParameterName (outParameterInfo, kParameterTwoName, false);
                outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
                outParameterInfo.minValue = -1.0;
                outParameterInfo.maxValue = 1.0;
                outParameterInfo.defaultValue = kDefaultValue_ParamTwo;
                break;
            case kParam_Three:
                AUBase::FillInParameterName (outParameterInfo, kParameterThreeName, false);
                outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
                outParameterInfo.minValue = -1.0;
                outParameterInfo.maxValue = 1.0;
                outParameterInfo.defaultValue = kDefaultValue_ParamThree;
                break;
           case kParam_Four:
                AUBase::FillInParameterName (outParameterInfo, kParameterFourName, false);
                outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
                outParameterInfo.minValue = -1.0;
                outParameterInfo.maxValue = 1.0;
                outParameterInfo.defaultValue = kDefaultValue_ParamFour;
                break;
           case kParam_Five:
                AUBase::FillInParameterName (outParameterInfo, kParameterFiveName, false);
                outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
                outParameterInfo.minValue = -1.0;
                outParameterInfo.maxValue = 1.0;
                outParameterInfo.defaultValue = kDefaultValue_ParamFive;
                break;
           case kParam_Six:
                AUBase::FillInParameterName (outParameterInfo, kParameterSixName, false);
                outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
                outParameterInfo.minValue = -1.0;
                outParameterInfo.maxValue = 1.0;
                outParameterInfo.defaultValue = kDefaultValue_ParamSix;
                break;
           case kParam_Seven:
                AUBase::FillInParameterName (outParameterInfo, kParameterSevenName, false);
                outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
                outParameterInfo.minValue = -1.0;
                outParameterInfo.maxValue = 1.0;
                outParameterInfo.defaultValue = kDefaultValue_ParamSeven;
                break;
           case kParam_Eight:
                AUBase::FillInParameterName (outParameterInfo, kParameterEightName, false);
                outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
                outParameterInfo.minValue = -1.0;
                outParameterInfo.maxValue = 1.0;
                outParameterInfo.defaultValue = kDefaultValue_ParamEight;
                break;
           case kParam_Nine:
                AUBase::FillInParameterName (outParameterInfo, kParameterNineName, false);
                outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
                outParameterInfo.minValue = -1.0;
                outParameterInfo.maxValue = 1.0;
                outParameterInfo.defaultValue = kDefaultValue_ParamNine;
                break;
           case kParam_Ten:
                AUBase::FillInParameterName (outParameterInfo, kParameterTenName, false);
                outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
                outParameterInfo.minValue = -1.0;
                outParameterInfo.maxValue = 1.0;
                outParameterInfo.defaultValue = kDefaultValue_ParamTen;
                break;
           default:
                result = kAudioUnitErr_InvalidParameter;
                break;
            }
	} else {
        result = kAudioUnitErr_InvalidParameter;
    }
    


	return result;
}

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//	Pafnuty2::GetPropertyInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult			Pafnuty2::GetPropertyInfo (AudioUnitPropertyID	inID,
                                                        AudioUnitScope		inScope,
                                                        AudioUnitElement	inElement,
                                                        UInt32 &		outDataSize,
                                                        Boolean &		outWritable)
{
	return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
}

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//	Pafnuty2::GetProperty
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult			Pafnuty2::GetProperty(	AudioUnitPropertyID inID,
                                                        AudioUnitScope 		inScope,
                                                        AudioUnitElement 	inElement,
                                                        void *			outData )
{
	return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
}

//	Pafnuty2::Initialize
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Pafnuty2::Initialize()
{
    ComponentResult result = AUEffectBase::Initialize();
    if (result == noErr)
        Reset(kAudioUnitScope_Global, 0);
    return result;
}

#pragma mark ____Pafnuty2EffectKernel



//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//	Pafnuty2::Pafnuty2Kernel::Reset()
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void		Pafnuty2::Pafnuty2Kernel::Reset()
{
	fpd = 1.0; while (fpd < 16386) fpd = rand()*UINT32_MAX;
}

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//	Pafnuty2::Pafnuty2Kernel::Process
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void		Pafnuty2::Pafnuty2Kernel::Process(	const Float32 	*inSourceP,
                                                    Float32		 	*inDestP,
                                                    UInt32 			inFramesToProcess,
                                                    UInt32			inNumChannels, 
                                                    bool			&ioSilence )
{
	UInt32 nSampleFrames = inFramesToProcess;
	const Float32 *sourceP = inSourceP;
	Float32 *destP = inDestP;
	double chebyshev;
	double effect;
	double inP2;
	double inP3;
	double inP4;
	double inP5;
	double inP6;
	double inP7;
	double inP8;
	double inP9;
	double inP10;
	double second = (GetParameter( kParam_One )*1.0);
	second = second * fabs(second);
	double third = -(GetParameter( kParam_Two )*0.60);
	third = third * fabs(third);
	double fourth = -(GetParameter( kParam_Three )*0.60);
	fourth = fourth * fabs(fourth);
	double fifth = (GetParameter( kParam_Four )*0.45);
	fifth = fifth * fabs(fifth);
	double sixth = (GetParameter( kParam_Five )*0.45);
	sixth = sixth * fabs(sixth);
	double seventh = -(GetParameter( kParam_Six )*0.38);
	seventh = seventh * fabs(seventh);
	double eighth = -(GetParameter( kParam_Seven )*0.38);
	eighth = eighth * fabs(eighth);
	double ninth = (GetParameter( kParam_Eight )*0.35);
	ninth = ninth * fabs(ninth);
	double tenth = (GetParameter( kParam_Nine )*0.35);
	tenth = tenth * fabs(tenth);
	double amount = GetParameter( kParam_Ten );
	amount = amount * fabs(amount);
	//setting up 
	
	while (nSampleFrames-- > 0) {
		double inputSample = *sourceP;
		if (fabs(inputSample)<1.18e-23) inputSample = fpd * 1.18e-17;
		
		effect = 0.0;
		inP2 = inputSample * inputSample;
		inP3 = inP2 * inputSample;
		inP4 = inP3 * inputSample;
		inP5 = inP4 * inputSample;
		inP6 = inP5 * inputSample;
		inP7 = inP6 * inputSample;
		inP8 = inP7 * inputSample;
		inP9 = inP8 * inputSample;
		inP10 = inP9 * inputSample;
		//let's do the powers ahead of time and see how we do.
		if (second != 0.0)
		{
			chebyshev = (2 * inP2);
			effect += (chebyshev * second);
		}
		if (third != 0.0)
		{
			chebyshev = (4 * inP3) - (3*inputSample);
			effect += (chebyshev * third);
		}
		if (fourth != 0.0)
		{
			chebyshev = (8 * inP4) - (8 * inP2);
			effect += (chebyshev * fourth);
		}
		if (fifth != 0.0)
		{
			chebyshev = (16 * inP5) - (20 * inP3) + (5*inputSample);
			effect += (chebyshev * fifth);
		}
		if (sixth != 0.0)
		{
			chebyshev = (32 * inP6) - (48 * inP4) + (18 * inP2);
			effect += (chebyshev * sixth);
		}
		if (seventh != 0.0)
		{
			chebyshev = (64 * inP7) - (112 * inP5) + (56 * inP3) - (7*inputSample);
			effect += (chebyshev * seventh);
		}
		if (eighth != 0.0)
		{
			chebyshev = (128 * inP8) - (256 * inP6) + (160 * inP4) - (32 * inP2);
			effect += (chebyshev * eighth);
		}
		if (ninth != 0.0)
		{
			chebyshev = (256 * inP9) - (576 * inP7) + (432 * inP5) - (120 * inP3) + (9*inputSample);
			effect += (chebyshev * ninth);
		}
		if (tenth != 0.0)
		{
			chebyshev = (512 * inP10) - (1280 * inP8) + (1120 * inP6) - (400 * inP4) + (50 * inP2);
			effect += (chebyshev * tenth);
		}
		//Yowza! Aren't we glad we're testing to see if we can skip these little bastards?
		inputSample += (effect * amount);
		//You too can make a horrible graunch and then SUBTRACT it leaving only the refreshing smell of pine...
		
		//begin 32 bit floating point dither
		int expon; frexpf((float)inputSample, &expon);
		fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5;
		inputSample += ((double(fpd)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
		//end 32 bit floating point dither
		
		*destP = inputSample;
		
		sourceP += inNumChannels; destP += inNumChannels;
	}
}

