/*
* File: StudioTan.cpp
*
* Version: 1.0
*
* Created: 1/9/19
*
* Copyright: Copyright � 2019 Airwindows, All Rights Reserved
*
* Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc. ("Apple") in
* consideration of your agreement to the following terms, and your use, installation, modification
* or redistribution of this Apple software constitutes acceptance of these terms. If you do
* not agree with these terms, please do not use, install, modify or redistribute this Apple
* software.
*
* In consideration of your agreement to abide by the following terms, and subject to these terms,
* Apple grants you a personal, non-exclusive license, under Apple's copyrights in this
* original Apple software (the "Apple Software"), to use, reproduce, modify and redistribute the
* Apple Software, with or without modifications, in source and/or binary forms; provided that if you
* redistribute the Apple Software in its entirety and without modifications, you must retain this
* notice and the following text and disclaimers in all such redistributions of the Apple Software.
* Neither the name, trademarks, service marks or logos of Apple Computer, Inc. may be used to
* endorse or promote products derived from the Apple Software without specific prior written
* permission from Apple. Except as expressly stated in this notice, no other rights or
* licenses, express or implied, are granted by Apple herein, including but not limited to any
* patent rights that may be infringed by your derivative works or by other works in which the
* Apple Software may be incorporated.
*
* The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO WARRANTIES, EXPRESS OR
* IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE
* OR IN COMBINATION WITH YOUR PRODUCTS.
*
* IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE,
* REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER
* UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN
* IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/*=============================================================================
StudioTan.cpp
=============================================================================*/
#include "StudioTan.h"
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
COMPONENT_ENTRY(StudioTan)
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// StudioTan::StudioTan
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
StudioTan::StudioTan(AudioUnit component)
: AUEffectBase(component)
{
CreateElements();
Globals()->UseIndexedParameters(kNumberOfParameters);
SetParameter(kParam_One, kDefaultValue_ParamOne );
#if AU_DEBUG_DISPATCHER
mDebugDispatcher = new AUDebugDispatcher (this);
#endif
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// StudioTan::GetParameterValueStrings
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult StudioTan::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_ST,
kMenuItem_DM,
kMenuItem_NJ,
kMenuItem_STCD,
kMenuItem_DMCD,
kMenuItem_NJCD,
};
*outStrings = CFArrayCreate (
NULL,
(const void **) strings,
(sizeof (strings) / sizeof (strings [0])),
NULL
);
return noErr;
}
return kAudioUnitErr_InvalidProperty;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// StudioTan::GetParameterInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult StudioTan::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 = kST;
outParameterInfo.maxValue = kNJCD;
outParameterInfo.defaultValue = kDefaultValue_ParamOne;
break;
default:
result = kAudioUnitErr_InvalidParameter;
break;
}
} else {
result = kAudioUnitErr_InvalidParameter;
}
return result;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// StudioTan::GetPropertyInfo
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult StudioTan::GetPropertyInfo (AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
UInt32 & outDataSize,
Boolean & outWritable)
{
return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// StudioTan::GetProperty
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult StudioTan::GetProperty( AudioUnitPropertyID inID,
AudioUnitScope inScope,
AudioUnitElement inElement,
void * outData )
{
return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
}
// StudioTan::Initialize
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ComponentResult StudioTan::Initialize()
{
ComponentResult result = AUEffectBase::Initialize();
if (result == noErr)
Reset(kAudioUnitScope_Global, 0);
return result;
}
#pragma mark ____StudioTanEffectKernel
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// StudioTan::StudioTanKernel::Reset()
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void StudioTan::StudioTanKernel::Reset()
{
byn[0] = 1000.0;
byn[1] = 301.0;
byn[2] = 176.0;
byn[3] = 125.0;
byn[4] = 97.0;
byn[5] = 79.0;
byn[6] = 67.0;
byn[7] = 58.0;
byn[8] = 51.0;
byn[9] = 46.0;
byn[10] = 1000.0;
noiseShaping = 0.0;
lastSample = 0.0;
lastSample2 = 0.0;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// StudioTan::StudioTanKernel::Process
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
void StudioTan::StudioTanKernel::Process( const Float32 *inSourceP,
Float32 *inDestP,
UInt32 inFramesToProcess,
UInt32 inNumChannels,
bool &ioSilence )
{
UInt32 nSampleFrames = inFramesToProcess;
const Float32 *sourceP = inSourceP;
Float32 *destP = inDestP;
int processing = (int) GetParameter( kParam_One );
bool highres = true; //for 24 bit: false for 16 bit
bool brightfloor = true; //for Studio Tan: false for Dither Me Timbers
bool benford = true; //for Not Just Another Dither: false for newer two
bool cutbins = false; //for NJAD: only attenuate bins if one gets very full
switch (processing)
{
case 0: benford = false; break; //Studio Tan 24
case 1: benford = false; brightfloor = false; break; //Dither Me Timbers 24
case 2: break; //Not Just Another Dither 24
case 3: benford = false; highres = false; break; //Studio Tan 16
case 4: benford = false; brightfloor = false; highres = false; break; //Dither Me Timbers 16
case 5: highres = false; break; //Not Just Another Dither 16
}
while (nSampleFrames-- > 0) {
long double inputSample;
long double outputSample;
long double drySample;
if (highres) inputSample = *sourceP * 8388608.0;
else inputSample = *sourceP * 32768.0;
//shared input stage
if (benford) {
//begin Not Just Another Dither
cutbins = false;
drySample = inputSample;
inputSample -= noiseShaping;
long double 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;}
int hotbinA = floor(benfordize);
//hotbin becomes the Benford bin value for this number floored
long double totalA = 0;
if ((hotbinA > 0) && (hotbinA < 10))
{
byn[hotbinA] += 1;
if (byn[hotbinA] > 982) cutbins = true;
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;}
if (benfordize < 1.0) {benfordize *= 10;}
if (benfordize < 1.0) {benfordize *= 10;}
if (benfordize < 1.0) {benfordize *= 10;}
int hotbinB = floor(benfordize);
//hotbin becomes the Benford bin value for this number ceiled
long double totalB = 0;
if ((hotbinB > 0) && (hotbinB < 10))
{
byn[hotbinB] += 1;
if (byn[hotbinB] > 982) cutbins = true;
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;
outputSample = floor(inputSample);
}
else
{
byn[hotbinB] += 1;
outputSample = floor(inputSample+1);
}
//assign the relevant one to the delay line
//and floor/ceil signal accordingly
if (cutbins) {
byn[1] *= 0.99;
byn[2] *= 0.99;
byn[3] *= 0.99;
byn[4] *= 0.99;
byn[5] *= 0.99;
byn[6] *= 0.99;
byn[7] *= 0.99;
byn[8] *= 0.99;
byn[9] *= 0.99;
byn[10] *= 0.99; //catchall for garbage data
}
noiseShaping += outputSample - drySample;
//end Not Just Another Dither
} else {
//begin StudioTan or Dither Me Timbers
if (brightfloor) {
lastSample -= (noiseShaping*0.8);
if ((lastSample+lastSample) <= (inputSample+lastSample2)) outputSample = floor(lastSample); //StudioTan
else outputSample = floor(lastSample+1.0); //round down or up based on whether it softens treble angles
} else {
lastSample -= (noiseShaping*0.11);
if ((lastSample+lastSample) >= (inputSample+lastSample2)) outputSample = floor(lastSample); //DitherMeTimbers
else outputSample = floor(lastSample+1.0); //round down or up based on whether it softens treble angles
}
noiseShaping += outputSample;
noiseShaping -= lastSample; //apply noise shaping
lastSample2 = lastSample;
lastSample = inputSample; //we retain three samples in a row
//end StudioTan or Dither Me Timbers
}
//shared output stage
long double noiseSuppress = fabs(inputSample);
if (noiseShaping > noiseSuppress) noiseShaping = noiseSuppress;
if (noiseShaping < -noiseSuppress) noiseShaping = -noiseSuppress;
Float32 ironBar;
if (highres) ironBar = outputSample / 8388608.0;
else ironBar = outputSample / 32768.0;
if (ironBar > 1.0) ironBar = 1.0;
if (ironBar < -1.0) ironBar = -1.0;
*destP = ironBar;
sourceP += inNumChannels;
destP += inNumChannels;
}
}
