/*
* File: NotJustAnotherCD.cpp
*
* Version: 1.0
*
* Created: 1/31/17
*
* Copyright: Copyright � 2017 Airwindows, All Rights Reserved
*
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/*=============================================================================
NotJustAnotherCD.cpp
=============================================================================*/
#include "NotJustAnotherCD.h"
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
COMPONENT_ENTRY(NotJustAnotherCD)
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// NotJustAnotherCD::NotJustAnotherCD
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
NotJustAnotherCD::NotJustAnotherCD(AudioUnit component)
: AUEffectBase(component)
{
CreateElements();
Globals()->UseIndexedParameters(kNumberOfParameters);
#if AU_DEBUG_DISPATCHER
mDebugDispatcher = new AUDebugDispatcher (this);
#endif
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// NotJustAnotherCD::GetParameterValueStrings
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult NotJustAnotherCD::GetParameterValueStrings(AudioUnitScope inScope,
AudioUnitParameterID inParameterID,
CFArrayRef * outStrings)
{
return kAudioUnitErr_InvalidProperty;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// NotJustAnotherCD::GetParameterInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult NotJustAnotherCD::GetParameterInfo(AudioUnitScope inScope,
AudioUnitParameterID inParameterID,
AudioUnitParameterInfo &outParameterInfo )
{
ComponentResult result = noErr;
outParameterInfo.flags = kAudioUnitParameterFlag_IsWritable
| kAudioUnitParameterFlag_IsReadable;
if (inScope == kAudioUnitScope_Global) {
switch(inParameterID)
{
default:
result = kAudioUnitErr_InvalidParameter;
break;
}
} else {
result = kAudioUnitErr_InvalidParameter;
}
return result;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// NotJustAnotherCD::GetPropertyInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult NotJustAnotherCD::GetPropertyInfo (AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
UInt32 & outDataSize,
Boolean & outWritable)
{
return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// NotJustAnotherCD::GetProperty
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult NotJustAnotherCD::GetProperty( AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
void * outData )
{
return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
}
// NotJustAnotherCD::Initialize
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult NotJustAnotherCD::Initialize()
{
ComponentResult result = AUEffectBase::Initialize();
if (result == noErr)
Reset(kAudioUnitScope_Global, 0);
return result;
}
#pragma mark ____NotJustAnotherCDEffectKernel
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// NotJustAnotherCD::NotJustAnotherCDKernel::Reset()
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void NotJustAnotherCD::NotJustAnotherCDKernel::Reset()
{
byn[0] = 1000;
byn[1] = 301;
byn[2] = 176;
byn[3] = 125;
byn[4] = 97;
byn[5] = 79;
byn[6] = 67;
byn[7] = 58;
byn[8] = 51;
byn[9] = 46;
byn[10] = 1000;
noiseShaping = 0.0;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// NotJustAnotherCD::NotJustAnotherCDKernel::Process
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void NotJustAnotherCD::NotJustAnotherCDKernel::Process( const Float32 *inSourceP,
Float32 *inDestP,
UInt32 inFramesToProcess,
UInt32 inNumChannels,
bool &ioSilence )
{
UInt32 nSampleFrames = inFramesToProcess;
const Float32 *sourceP = inSourceP;
Float32 *destP = inDestP;
long double inputSample;
Float64 benfordize;
int hotbinA;
int hotbinB;
Float64 totalA;
Float64 totalB;
Float32 drySample;
while (nSampleFrames-- > 0) {
inputSample = *sourceP;
if (inputSample<1.2e-38 && -inputSample<1.2e-38) {
static int noisesource = 0;
//this declares a variable before anything else is compiled. It won't keep assigning
//it to 0 for every sample, it's as if the declaration doesn't exist in this context,
//but it lets me add this denormalization fix in a single place rather than updating
//it in three different locations. The variable isn't thread-safe but this is only
//a random seed and we can share it with whatever.
noisesource = noisesource % 1700021; noisesource++;
int 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;
double applyresidue = residue;
applyresidue *= 0.00000001;
applyresidue *= 0.00000001;
inputSample = applyresidue;
//this denormalization routine produces a white noise at -300 dB which the noise
//shaping will interact with to produce a bipolar output, but the noise is actually
//all positive. That should stop any variables from going denormal, and the routine
//only kicks in if digital black is input. As a final touch, if you save to 24-bit
//the silence will return to being digital black again.
}
drySample = inputSample;
inputSample -= noiseShaping;
inputSample *= 32768.0;
//0-1 is now one bit, now we dither
benfordize = floor(inputSample);
while (benfordize >= 1.0) {benfordize /= 10;}
if (benfordize < 1.0) {benfordize *= 10;}
if (benfordize < 1.0) {benfordize *= 10;}
if (benfordize < 1.0) {benfordize *= 10;}
if (benfordize < 1.0) {benfordize *= 10;}
if (benfordize < 1.0) {benfordize *= 10;}
hotbinA = floor(benfordize);
//hotbin becomes the Benford bin value for this number floored
totalA = 0;
if ((hotbinA > 0) && (hotbinA < 10))
{
byn[hotbinA] += 1;
totalA += (301-byn[1]);
totalA += (176-byn[2]);
totalA += (125-byn[3]);
totalA += (97-byn[4]);
totalA += (79-byn[5]);
totalA += (67-byn[6]);
totalA += (58-byn[7]);
totalA += (51-byn[8]);
totalA += (46-byn[9]);
byn[hotbinA] -= 1;
} else {hotbinA = 10;}
//produce total number- smaller is closer to Benford real
benfordize = ceil(inputSample);
while (benfordize >= 1.0) {benfordize /= 10;}
if (benfordize < 1.0) {benfordize *= 10;}
if (benfordize < 1.0) {benfordize *= 10;}
hotbinB = floor(benfordize);
//hotbin becomes the Benford bin value for this number ceiled
totalB = 0;
if ((hotbinB > 0) && (hotbinB < 10))
{
byn[hotbinB] += 1;
totalB += (301-byn[1]);
totalB += (176-byn[2]);
totalB += (125-byn[3]);
totalB += (97-byn[4]);
totalB += (79-byn[5]);
totalB += (67-byn[6]);
totalB += (58-byn[7]);
totalB += (51-byn[8]);
totalB += (46-byn[9]);
byn[hotbinB] -= 1;
} else {hotbinB = 10;}
//produce total number- smaller is closer to Benford real
if (totalA < totalB)
{
byn[hotbinA] += 1;
inputSample = floor(inputSample);
}
else
{
byn[hotbinB] += 1;
inputSample = ceil(inputSample);
}
//assign the relevant one to the delay line
//and floor/ceil signal accordingly
totalA = byn[1] + byn[2] + byn[3] + byn[4] + byn[5] + byn[6] + byn[7] + byn[8] + byn[9];
totalA /= 1000;
if (totalA = 0) totalA = 1;
byn[1] /= totalA;
byn[2] /= totalA;
byn[3] /= totalA;
byn[4] /= totalA;
byn[5] /= totalA;
byn[6] /= totalA;
byn[7] /= totalA;
byn[8] /= totalA;
byn[9] /= totalA;
byn[10] /= 2; //catchall for garbage data
inputSample /= 32768.0;
noiseShaping += inputSample - drySample;
*destP = inputSample;
sourceP += inNumChannels; destP += inNumChannels;
}
}
