/*
* File: Floor.cpp
*
* Version: 1.0
*
* Created: 12/8/10
*
* Copyright: Copyright � 2010 Airwindows, All Rights Reserved
*
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*/
/*=============================================================================
Floor.h
=============================================================================*/
#include "Floor.h"
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
COMPONENT_ENTRY(Floor)
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Floor::Floor
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Floor::Floor(AudioUnit component)
: AUEffectBase(component)
{
CreateElements();
Globals()->UseIndexedParameters(kNumberOfParameters);
SetParameter(kParam_One, kDefaultValue_ParamOne );
SetParameter(kParam_Two, kDefaultValue_ParamTwo );
SetParameter(kParam_Three, kDefaultValue_ParamThree );
#if AU_DEBUG_DISPATCHER
mDebugDispatcher = new AUDebugDispatcher (this);
#endif
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Floor::GetParameterValueStrings
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Floor::GetParameterValueStrings(AudioUnitScope inScope,
AudioUnitParameterID inParameterID,
CFArrayRef * outStrings)
{
return kAudioUnitErr_InvalidProperty;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Floor::GetParameterInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Floor::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 = 0.0;
outParameterInfo.maxValue = 1.0;
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;
default:
result = kAudioUnitErr_InvalidParameter;
break;
}
} else {
result = kAudioUnitErr_InvalidParameter;
}
return result;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Floor::GetPropertyInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Floor::GetPropertyInfo (AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
UInt32 & outDataSize,
Boolean & outWritable)
{
return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Floor::GetProperty
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Floor::GetProperty( AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
void * outData )
{
return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Floor::Initialize
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult Floor::Initialize()
{
ComponentResult result = AUEffectBase::Initialize();
if (result == noErr)
Reset(kAudioUnitScope_Global, 0);
return result;
}
#pragma mark ____FloorEffectKernel
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Floor::FloorKernel::Reset()
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void Floor::FloorKernel::Reset()
{
flip = false;
iirSample1A = 0.0;
iirSample1B = 0.0;
iirSample1C = 0.0;
iirSample1D = 0.0;
iirSample1E = 0.0;
iirSample2A = 0.0;
iirSample2B = 0.0;
iirSample2C = 0.0;
iirSample2D = 0.0;
iirSample2E = 0.0;
fpNShape = 0.0;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Floor::FloorKernel::Process
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void Floor::FloorKernel::Process( const Float32 *inSourceP,
Float32 *inDestP,
UInt32 inFramesToProcess,
UInt32 inNumChannels,
bool &ioSilence )
{
UInt32 nSampleFrames = inFramesToProcess;
const Float32 *sourceP = inSourceP;
Float32 *destP = inDestP;
Float64 overallscale = 1.0;
overallscale /= 44100.0;
overallscale *= GetSampleRate();
Float64 setting = pow(GetParameter( kParam_One ),2);
Float64 iirAmount = (setting/4.0)/overallscale;
Float64 tight = -1.0;
Float64 gaintrim = 1.0 + (setting/4.0);
Float64 offset;
Float64 lows;
Float64 density = GetParameter( kParam_Two );
Float64 bridgerectifier;
Float64 temp;
iirAmount += (iirAmount * tight * tight);
tight /= 3.0;
if (iirAmount <= 0.0) iirAmount = 0.0;
if (iirAmount > 1.0) iirAmount = 1.0;
Float64 wet = GetParameter( kParam_Three );
Float64 dry = 1.0-wet;
while (nSampleFrames-- > 0) {
long double inputSample = *sourceP;
static int noisesource = 0;
int residue;
double applyresidue;
noisesource = noisesource % 1700021; noisesource++;
residue = noisesource * noisesource;
residue = residue % 170003; residue *= residue;
residue = residue % 17011; residue *= residue;
residue = residue % 1709; residue *= residue;
residue = residue % 173; residue *= residue;
residue = residue % 17;
applyresidue = residue;
applyresidue *= 0.00000001;
applyresidue *= 0.00000001;
inputSample += applyresidue;
if (inputSample<1.2e-38 && -inputSample<1.2e-38) {
inputSample -= applyresidue;
}
//for live air, we always apply the dither noise. Then, if our result is
//effectively digital black, we'll subtract it again. We want a 'air' hiss
long double drySample = inputSample;
if (tight > 0) offset = (1 - tight) + (fabs(inputSample)*tight);
else offset = (1 + tight) + ((1-fabs(inputSample))*tight);
if (offset < 0) offset = 0;
if (offset > 1) offset = 1;
iirSample1A = (iirSample1A * (1 - (offset * iirAmount))) + (inputSample * (offset * iirAmount));
lows = iirSample1A;
inputSample -= lows;
temp = lows;
if (lows < 0) {lows = -sin(-lows*1.5707963267949);}
if (lows > 0) {lows = sin(lows*1.5707963267949);}
lows -= temp;
inputSample += lows;
inputSample *= gaintrim;
if (tight > 0) offset = (1 - tight) + (fabs(inputSample)*tight);
else offset = (1 + tight) + ((1-fabs(inputSample))*tight);
if (offset < 0) offset = 0;
if (offset > 1) offset = 1;
iirSample1B = (iirSample1B * (1 - (offset * iirAmount))) + (inputSample * (offset * iirAmount));
lows = iirSample1B;
inputSample -= lows;
temp = lows;
if (lows < 0) {lows = -sin(-lows*1.5707963267949);}
if (lows > 0) {lows = sin(lows*1.5707963267949);}
lows -= temp;
inputSample += lows;
inputSample *= gaintrim;
if (tight > 0) offset = (1 - tight) + (fabs(inputSample)*tight);
else offset = (1 + tight) + ((1-fabs(inputSample))*tight);
if (offset < 0) offset = 0;
if (offset > 1) offset = 1;
iirSample1C = (iirSample1C * (1 - (offset * iirAmount))) + (inputSample * (offset * iirAmount));
lows = iirSample1C;
inputSample -= lows;
temp = lows;
if (lows < 0) {lows = -sin(-lows*1.5707963267949);}
if (lows > 0) {lows = sin(lows*1.5707963267949);}
lows -= temp;
inputSample += lows;
inputSample *= gaintrim;
if (tight > 0) offset = (1 - tight) + (fabs(inputSample)*tight);
else offset = (1 + tight) + ((1-fabs(inputSample))*tight);
if (offset < 0) offset = 0;
if (offset > 1) offset = 1;
iirSample1D = (iirSample1D * (1 - (offset * iirAmount))) + (inputSample * (offset * iirAmount));
lows = iirSample1D;
inputSample -= lows;
temp = lows;
if (lows < 0) {lows = -sin(-lows*1.5707963267949);}
if (lows > 0) {lows = sin(lows*1.5707963267949);}
lows -= temp;
inputSample += lows;
inputSample *= gaintrim;
if (tight > 0) offset = (1 - tight) + (fabs(inputSample)*tight);
else offset = (1 + tight) + ((1-fabs(inputSample))*tight);
if (offset < 0) offset = 0;
if (offset > 1) offset = 1;
iirSample1E = (iirSample1E * (1 - (offset * iirAmount))) + (inputSample * (offset * iirAmount));
lows = iirSample1E;
inputSample -= lows;
temp = lows;
if (lows < 0) {lows = -sin(-lows*1.5707963267949);}
if (lows > 0) {lows = sin(lows*1.5707963267949);}
lows -= temp;
inputSample += lows;
inputSample *= gaintrim;
if (inputSample > 1.0) inputSample = 1.0;
if (inputSample < -1.0) inputSample = -1.0;
bridgerectifier = fabs(inputSample)*1.57079633;
bridgerectifier = sin(bridgerectifier)*1.57079633;
bridgerectifier = (fabs(inputSample)*(1-density))+(bridgerectifier*density);
bridgerectifier = sin(bridgerectifier);
if (inputSample > 0) inputSample = (inputSample*(1-density))+(bridgerectifier*density);
else inputSample = (inputSample*(1-density))-(bridgerectifier*density);
//drive section
if (wet < 1.0) inputSample = (drySample * dry)+(inputSample*wet);
//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;
sourceP += inNumChannels; destP += inNumChannels;
}
}
