/*
* File: ElectroHat.cpp
*
* Version: 1.0
*
* Created: 9/15/14
*
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/*=============================================================================
ElectroHat.cpp
=============================================================================*/
#include "ElectroHat.h"
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
COMPONENT_ENTRY(ElectroHat)
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// ElectroHat::ElectroHat
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ElectroHat::ElectroHat(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 );
#if AU_DEBUG_DISPATCHER
mDebugDispatcher = new AUDebugDispatcher (this);
#endif
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// ElectroHat::GetParameterValueStrings
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult ElectroHat::GetParameterValueStrings(AudioUnitScope inScope,
AudioUnitParameterID inParameterID,
CFArrayRef * outStrings)
{
if ((inScope == kAudioUnitScope_Global) && (inParameterID == kParam_One)) //ID must be actual name of parameter identifier, not number
{
if (outStrings == NULL) return noErr;
CFStringRef strings [] =
{
kMenuItem_SynHat,
kMenuItem_ElectroHat,
kMenuItem_DenseHat,
kMenuItem_606Hat,
kMenuItem_808Hat,
kMenuItem_909Hat,
};
*outStrings = CFArrayCreate (
NULL,
(const void **) strings,
(sizeof (strings) / sizeof (strings [0])),
NULL
);
return noErr;
}
return kAudioUnitErr_InvalidProperty;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// ElectroHat::GetParameterInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult ElectroHat::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_Indexed;
outParameterInfo.minValue = kSynHat;
outParameterInfo.maxValue = k909Hat;
outParameterInfo.defaultValue = kDefaultValue_ParamOne;
break;
case kParam_Two:
AUBase::FillInParameterName (outParameterInfo, kParameterTwoName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamTwo;
break;
case kParam_Three:
AUBase::FillInParameterName (outParameterInfo, kParameterThreeName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamThree;
break;
case kParam_Four:
AUBase::FillInParameterName (outParameterInfo, kParameterFourName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamFour;
break;
case kParam_Five:
AUBase::FillInParameterName (outParameterInfo, kParameterFiveName, false);
outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
outParameterInfo.minValue = 0.0;
outParameterInfo.maxValue = 1.0;
outParameterInfo.defaultValue = kDefaultValue_ParamFive;
break;
default:
result = kAudioUnitErr_InvalidParameter;
break;
}
} else {
result = kAudioUnitErr_InvalidParameter;
}
return result;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// ElectroHat::GetPropertyInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult ElectroHat::GetPropertyInfo (AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
UInt32 & outDataSize,
Boolean & outWritable)
{
return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// ElectroHat::GetProperty
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult ElectroHat::GetProperty( AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
void * outData )
{
return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
}
// ElectroHat::Initialize
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult ElectroHat::Initialize()
{
ComponentResult result = AUEffectBase::Initialize();
if (result == noErr)
Reset(kAudioUnitScope_Global, 0);
return result;
}
#pragma mark ____ElectroHatEffectKernel
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// ElectroHat::ElectroHatKernel::Reset()
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void ElectroHat::ElectroHatKernel::Reset()
{
storedSample = 0.0;
lastSample = 0.0;
tik = 3746926;
lok = 0;
flip = true;
fpNShape = 0.0;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// ElectroHat::ElectroHatKernel::Process
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void ElectroHat::ElectroHatKernel::Process( const Float32 *inSourceP,
Float32 *inDestP,
UInt32 inFramesToProcess,
UInt32 inNumChannels,
bool &ioSilence )
{
UInt32 nSampleFrames = inFramesToProcess;
const Float32 *sourceP = inSourceP;
Float32 *destP = inDestP;
long double overallscale = 1.0;
overallscale /= 44100.0;
overallscale *= GetSampleRate();
bool highSample = false;
if (GetSampleRate() > 64000) highSample = true;
//we will go to another dither for 88 and 96K
Float64 inputSample;
Float64 tempSample;
Float64 drySample;
int deSyn = GetParameter( kParam_One );
Float64 increment = GetParameter( kParam_Two );
Float64 brighten = GetParameter( kParam_Three );
Float64 outputlevel = GetParameter( kParam_Four );
Float64 wet = GetParameter( kParam_Five );
Float64 dry = 1.0-wet;
if (deSyn == 4) {deSyn = 1; increment = 0.411; brighten = 0.87;}
//606 preset
if (deSyn == 5) {deSyn = 2; increment = 0.111; brighten = 1.0;}
//808 preset
if (deSyn == 6) {deSyn = 2; increment = 0.299; brighten = 0.359;}
//909 preset
int tok = deSyn + 1;
increment *= 0.98;
increment += 0.01;
increment += (Float64)tok;
Float64 fosA = increment;
Float64 fosB = fosA * increment;
Float64 fosC = fosB * increment;
Float64 fosD = fosC * increment;
Float64 fosE = fosD * increment;
Float64 fosF = fosE * increment;
int posA = fosA;
int posB = fosB;
int posC = fosC;
int posD = fosD;
int posE = fosE;
int posF = fosF;
int posG = posF*posE*posD*posC*posB; //factorial
while (nSampleFrames-- > 0) {
inputSample = *sourceP;
drySample = inputSample;
inputSample = fabs(inputSample)*outputlevel;
if (flip) { //will always be true unless we have high sample rate
tik++;
tik = tik % posG;
tok = tik * tik; tok = tok % posF;
tok *= tok; tok = tok % posE;
tok *= tok; tok = tok % posD;
tok *= tok; tok = tok % posC;
tok *= tok; tok = tok % posB;
tok *= tok; tok = tok % posA;
inputSample = tok*inputSample;
if ((abs(lok-tok)<abs(lok+tok))&&(deSyn == 1)) {inputSample = -tok*inputSample;}
if ((abs(lok-tok)>abs(lok+tok))&&(deSyn == 2)) {inputSample = -tok*inputSample;}
if ((abs(lok-tok)<abs(lok+tok))&&(deSyn == 3)) {inputSample = -tok*inputSample;}
lok = tok;
tempSample = inputSample;
inputSample = inputSample - (lastSample*brighten);
lastSample = tempSample;
} else { //we have high sample rate and this is an interpolate sample
inputSample = lastSample;
//not really interpolating, just sample-and-hold
}
if (highSample) {
flip = !flip;
} else {
flip = true;
}
tempSample = inputSample;
inputSample += storedSample;
storedSample = tempSample;
if (wet !=1.0) {
inputSample = (inputSample * wet) + (drySample * dry);
}
//32 bit dither, made small and tidy.
int expon; frexpf((Float32)inputSample, &expon);
long double dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62);
inputSample += (dither-fpNShape); fpNShape = dither;
//end 32 bit dither
*destP = inputSample;
//moving average combats that near-Nyquist stuff
sourceP += inNumChannels; destP += inNumChannels;
}
}
