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355 lines
13 KiB
C++
Executable file
355 lines
13 KiB
C++
Executable file
/*
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* File: StudioTan.cpp
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*
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* Version: 1.0
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*
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* Created: 1/9/19
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*
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* Copyright: Copyright © 2019 Airwindows, Airwindows uses the MIT license
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*
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* Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc. ("Apple") in
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* consideration of your agreement to the following terms, and your use, installation, modification
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* or redistribution of this Apple software constitutes acceptance of these terms. If you do
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* not agree with these terms, please do not use, install, modify or redistribute this Apple
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* software.
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*
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* In consideration of your agreement to abide by the following terms, and subject to these terms,
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* Apple grants you a personal, non-exclusive license, under Apple's copyrights in this
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* original Apple software (the "Apple Software"), to use, reproduce, modify and redistribute the
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* Apple Software, with or without modifications, in source and/or binary forms; provided that if you
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* redistribute the Apple Software in its entirety and without modifications, you must retain this
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* notice and the following text and disclaimers in all such redistributions of the Apple Software.
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* Neither the name, trademarks, service marks or logos of Apple Computer, Inc. may be used to
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* endorse or promote products derived from the Apple Software without specific prior written
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* permission from Apple. Except as expressly stated in this notice, no other rights or
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* licenses, express or implied, are granted by Apple herein, including but not limited to any
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* patent rights that may be infringed by your derivative works or by other works in which the
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* Apple Software may be incorporated.
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*
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* The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO WARRANTIES, EXPRESS OR
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* IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE
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* OR IN COMBINATION WITH YOUR PRODUCTS.
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*
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* IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE,
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* REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER
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* UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN
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* IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/*=============================================================================
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StudioTan.cpp
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=============================================================================*/
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#include "StudioTan.h"
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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AUDIOCOMPONENT_ENTRY(AUBaseFactory, StudioTan)
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// StudioTan::StudioTan
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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StudioTan::StudioTan(AudioUnit component)
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: AUEffectBase(component)
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{
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CreateElements();
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Globals()->UseIndexedParameters(kNumberOfParameters);
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SetParameter(kParam_One, kDefaultValue_ParamOne );
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#if AU_DEBUG_DISPATCHER
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mDebugDispatcher = new AUDebugDispatcher (this);
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#endif
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// StudioTan::GetParameterValueStrings
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult StudioTan::GetParameterValueStrings(AudioUnitScope inScope,
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AudioUnitParameterID inParameterID,
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CFArrayRef * outStrings)
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{
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if ((inScope == kAudioUnitScope_Global) && (inParameterID == kParam_One)) //ID must be actual name of parameter identifier, not number
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{
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if (outStrings == NULL) return noErr;
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CFStringRef strings [] =
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{
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kMenuItem_ST,
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kMenuItem_DM,
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kMenuItem_NJ,
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kMenuItem_STCD,
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kMenuItem_DMCD,
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kMenuItem_NJCD,
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};
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*outStrings = CFArrayCreate (
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NULL,
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(const void **) strings,
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(sizeof (strings) / sizeof (strings [0])),
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NULL
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);
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return noErr;
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}
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return kAudioUnitErr_InvalidProperty;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// StudioTan::GetParameterInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult StudioTan::GetParameterInfo(AudioUnitScope inScope,
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AudioUnitParameterID inParameterID,
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AudioUnitParameterInfo &outParameterInfo )
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{
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ComponentResult result = noErr;
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outParameterInfo.flags = kAudioUnitParameterFlag_IsWritable
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| kAudioUnitParameterFlag_IsReadable;
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if (inScope == kAudioUnitScope_Global) {
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switch(inParameterID)
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{
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case kParam_One:
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AUBase::FillInParameterName (outParameterInfo, kParameterOneName, false);
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outParameterInfo.unit = kAudioUnitParameterUnit_Indexed;
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outParameterInfo.minValue = kST;
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outParameterInfo.maxValue = kNJCD;
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outParameterInfo.defaultValue = kDefaultValue_ParamOne;
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break;
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default:
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result = kAudioUnitErr_InvalidParameter;
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break;
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}
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} else {
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result = kAudioUnitErr_InvalidParameter;
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}
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return result;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// StudioTan::GetPropertyInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult StudioTan::GetPropertyInfo (AudioUnitPropertyID inID,
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AudioUnitScope inScope,
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AudioUnitElement inElement,
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UInt32 & outDataSize,
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Boolean & outWritable)
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{
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return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// StudioTan::GetProperty
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult StudioTan::GetProperty( AudioUnitPropertyID inID,
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AudioUnitScope inScope,
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AudioUnitElement inElement,
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void * outData )
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{
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return AUEffectBase::GetProperty (inID, inScope, inElement, outData);
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}
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// StudioTan::Initialize
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult StudioTan::Initialize()
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{
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ComponentResult result = AUEffectBase::Initialize();
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if (result == noErr)
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Reset(kAudioUnitScope_Global, 0);
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return result;
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}
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#pragma mark ____StudioTanEffectKernel
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// StudioTan::StudioTanKernel::Reset()
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void StudioTan::StudioTanKernel::Reset()
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{
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byn[0] = 1000.0;
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byn[1] = 301.0;
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byn[2] = 176.0;
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byn[3] = 125.0;
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byn[4] = 97.0;
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byn[5] = 79.0;
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byn[6] = 67.0;
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byn[7] = 58.0;
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byn[8] = 51.0;
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byn[9] = 46.0;
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byn[10] = 1000.0;
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noiseShaping = 0.0;
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lastSample = 0.0;
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lastSample2 = 0.0;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// StudioTan::StudioTanKernel::Process
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void StudioTan::StudioTanKernel::Process( const Float32 *inSourceP,
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Float32 *inDestP,
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UInt32 inFramesToProcess,
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UInt32 inNumChannels,
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bool &ioSilence )
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{
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UInt32 nSampleFrames = inFramesToProcess;
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const Float32 *sourceP = inSourceP;
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Float32 *destP = inDestP;
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int processing = (int) GetParameter( kParam_One );
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bool highres = true; //for 24 bit: false for 16 bit
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bool brightfloor = true; //for Studio Tan: false for Dither Me Timbers
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bool benford = true; //for Not Just Another Dither: false for newer two
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bool cutbins = false; //for NJAD: only attenuate bins if one gets very full
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switch (processing)
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{
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case 0: benford = false; break; //Studio Tan 24
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case 1: benford = false; brightfloor = false; break; //Dither Me Timbers 24
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case 2: break; //Not Just Another Dither 24
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case 3: benford = false; highres = false; break; //Studio Tan 16
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case 4: benford = false; brightfloor = false; highres = false; break; //Dither Me Timbers 16
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case 5: highres = false; break; //Not Just Another Dither 16
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}
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while (nSampleFrames-- > 0) {
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double inputSample;
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double outputSample;
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double drySample;
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if (highres) inputSample = *sourceP * 8388608.0;
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else inputSample = *sourceP * 32768.0;
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//shared input stage
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if (benford) {
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//begin Not Just Another Dither
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cutbins = false;
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drySample = inputSample;
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inputSample -= noiseShaping;
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double benfordize = floor(inputSample);
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while (benfordize >= 1.0) {benfordize /= 10;}
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if (benfordize < 1.0) {benfordize *= 10;}
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if (benfordize < 1.0) {benfordize *= 10;}
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if (benfordize < 1.0) {benfordize *= 10;}
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if (benfordize < 1.0) {benfordize *= 10;}
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if (benfordize < 1.0) {benfordize *= 10;}
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int hotbinA = floor(benfordize);
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//hotbin becomes the Benford bin value for this number floored
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double totalA = 0;
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if ((hotbinA > 0) && (hotbinA < 10))
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{
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byn[hotbinA] += 1;
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if (byn[hotbinA] > 982) cutbins = true;
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totalA += (301-byn[1]);
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totalA += (176-byn[2]);
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totalA += (125-byn[3]);
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totalA += (97-byn[4]);
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totalA += (79-byn[5]);
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totalA += (67-byn[6]);
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totalA += (58-byn[7]);
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totalA += (51-byn[8]);
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totalA += (46-byn[9]);
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byn[hotbinA] -= 1;
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} else {hotbinA = 10;}
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//produce total number- smaller is closer to Benford real
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benfordize = ceil(inputSample);
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while (benfordize >= 1.0) {benfordize /= 10;}
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if (benfordize < 1.0) {benfordize *= 10;}
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if (benfordize < 1.0) {benfordize *= 10;}
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if (benfordize < 1.0) {benfordize *= 10;}
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if (benfordize < 1.0) {benfordize *= 10;}
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if (benfordize < 1.0) {benfordize *= 10;}
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int hotbinB = floor(benfordize);
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//hotbin becomes the Benford bin value for this number ceiled
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double totalB = 0;
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if ((hotbinB > 0) && (hotbinB < 10))
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{
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byn[hotbinB] += 1;
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if (byn[hotbinB] > 982) cutbins = true;
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totalB += (301-byn[1]);
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totalB += (176-byn[2]);
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totalB += (125-byn[3]);
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totalB += (97-byn[4]);
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totalB += (79-byn[5]);
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totalB += (67-byn[6]);
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totalB += (58-byn[7]);
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totalB += (51-byn[8]);
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totalB += (46-byn[9]);
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byn[hotbinB] -= 1;
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} else {hotbinB = 10;}
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//produce total number- smaller is closer to Benford real
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if (totalA < totalB)
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{
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byn[hotbinA] += 1;
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outputSample = floor(inputSample);
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}
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else
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{
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byn[hotbinB] += 1;
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outputSample = floor(inputSample+1);
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}
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//assign the relevant one to the delay line
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//and floor/ceil signal accordingly
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if (cutbins) {
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byn[1] *= 0.99;
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byn[2] *= 0.99;
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byn[3] *= 0.99;
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byn[4] *= 0.99;
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byn[5] *= 0.99;
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byn[6] *= 0.99;
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byn[7] *= 0.99;
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byn[8] *= 0.99;
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byn[9] *= 0.99;
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byn[10] *= 0.99; //catchall for garbage data
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}
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noiseShaping += outputSample - drySample;
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//end Not Just Another Dither
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} else {
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//begin StudioTan or Dither Me Timbers
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if (brightfloor) {
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lastSample -= (noiseShaping*0.8);
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if ((lastSample+lastSample) <= (inputSample+lastSample2)) outputSample = floor(lastSample); //StudioTan
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else outputSample = floor(lastSample+1.0); //round down or up based on whether it softens treble angles
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} else {
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lastSample -= (noiseShaping*0.11);
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if ((lastSample+lastSample) >= (inputSample+lastSample2)) outputSample = floor(lastSample); //DitherMeTimbers
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else outputSample = floor(lastSample+1.0); //round down or up based on whether it softens treble angles
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}
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noiseShaping += outputSample;
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noiseShaping -= lastSample; //apply noise shaping
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lastSample2 = lastSample;
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lastSample = inputSample; //we retain three samples in a row
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//end StudioTan or Dither Me Timbers
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}
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//shared output stage
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double noiseSuppress = fabs(inputSample);
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if (noiseShaping > noiseSuppress) noiseShaping = noiseSuppress;
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if (noiseShaping < -noiseSuppress) noiseShaping = -noiseSuppress;
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Float32 ironBar;
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if (highres) ironBar = outputSample / 8388608.0;
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else ironBar = outputSample / 32768.0;
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if (ironBar > 1.0) ironBar = 1.0;
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if (ironBar < -1.0) ironBar = -1.0;
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*destP = ironBar;
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sourceP += inNumChannels;
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destP += inNumChannels;
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}
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}
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