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410 lines
18 KiB
C++
Executable file
410 lines
18 KiB
C++
Executable file
/*
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* File: MultiBandDistortion.cpp
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*
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* Version: 1.0
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*
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* Created: 4/24/11
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*
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* Copyright: Copyright © 2011 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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MultiBandDistortion.h
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=============================================================================*/
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#include "MultiBandDistortion.h"
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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COMPONENT_ENTRY(MultiBandDistortion)
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// MultiBandDistortion::MultiBandDistortion
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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MultiBandDistortion::MultiBandDistortion(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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SetParameter(kParam_Two, kDefaultValue_ParamTwo );
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SetParameter(kParam_Three, kDefaultValue_ParamThree );
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SetParameter(kParam_Four, kDefaultValue_ParamFour );
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SetParameter(kParam_Five, kDefaultValue_ParamFive );
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SetParameter(kParam_Six, kDefaultValue_ParamSix );
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SetParameter(kParam_Seven, kDefaultValue_ParamSeven );
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SetParameter(kParam_Eight, kDefaultValue_ParamEight );
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SetParameter(kParam_Nine, kDefaultValue_ParamNine );
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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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// MultiBandDistortion::GetParameterValueStrings
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult MultiBandDistortion::GetParameterValueStrings(AudioUnitScope inScope,
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AudioUnitParameterID inParameterID,
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CFArrayRef * outStrings)
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{
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return kAudioUnitErr_InvalidProperty;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// MultiBandDistortion::GetParameterInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult MultiBandDistortion::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_Generic;
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outParameterInfo.minValue = 0.0;
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outParameterInfo.maxValue = 1.0;
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outParameterInfo.defaultValue = kDefaultValue_ParamOne;
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break;
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case kParam_Two:
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AUBase::FillInParameterName (outParameterInfo, kParameterTwoName, false);
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outParameterInfo.unit = kAudioUnitParameterUnit_Decibels;
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outParameterInfo.minValue = 0.0;
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outParameterInfo.maxValue = 48.0;
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outParameterInfo.defaultValue = kDefaultValue_ParamTwo;
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break;
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case kParam_Three:
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AUBase::FillInParameterName (outParameterInfo, kParameterThreeName, false);
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outParameterInfo.unit = kAudioUnitParameterUnit_Decibels;
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outParameterInfo.minValue = 0.0;
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outParameterInfo.maxValue = 48.0;
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outParameterInfo.defaultValue = kDefaultValue_ParamThree;
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break;
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case kParam_Four:
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AUBase::FillInParameterName (outParameterInfo, kParameterFourName, false);
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outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
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outParameterInfo.minValue = 0.0;
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outParameterInfo.maxValue = 1.0;
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outParameterInfo.defaultValue = kDefaultValue_ParamFour;
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break;
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case kParam_Five:
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AUBase::FillInParameterName (outParameterInfo, kParameterFiveName, false);
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outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
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outParameterInfo.minValue = 0.0;
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outParameterInfo.maxValue = 1.0;
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outParameterInfo.defaultValue = kDefaultValue_ParamFive;
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break;
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case kParam_Six:
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AUBase::FillInParameterName (outParameterInfo, kParameterSixName, false);
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outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
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outParameterInfo.minValue = 0.0;
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outParameterInfo.maxValue = 1.0;
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outParameterInfo.defaultValue = kDefaultValue_ParamSix;
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break;
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case kParam_Seven:
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AUBase::FillInParameterName (outParameterInfo, kParameterSevenName, false);
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outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
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outParameterInfo.minValue = 0.0;
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outParameterInfo.maxValue = 1.0;
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outParameterInfo.defaultValue = kDefaultValue_ParamSeven;
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break;
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case kParam_Eight:
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AUBase::FillInParameterName (outParameterInfo, kParameterEightName, false);
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outParameterInfo.unit = kAudioUnitParameterUnit_Generic;
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outParameterInfo.minValue = 0.0;
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outParameterInfo.maxValue = 1.0;
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outParameterInfo.defaultValue = kDefaultValue_ParamEight;
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break;
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case kParam_Nine:
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AUBase::FillInParameterName (outParameterInfo, kParameterNineName, false);
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outParameterInfo.unit = kAudioUnitParameterUnit_Decibels;
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outParameterInfo.minValue = -48.0;
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outParameterInfo.maxValue = 0.0;
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outParameterInfo.defaultValue = kDefaultValue_ParamNine;
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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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// MultiBandDistortion::GetPropertyInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult MultiBandDistortion::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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// MultiBandDistortion::GetProperty
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult MultiBandDistortion::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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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// MultiBandDistortion::Initialize
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult MultiBandDistortion::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 ____MultiBandDistortionEffectKernel
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// MultiBandDistortion::MultiBandDistortionKernel::Reset()
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void MultiBandDistortion::MultiBandDistortionKernel::Reset()
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{
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ataLast3Sample = ataLast2Sample = ataLast1Sample = 0.0;
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ataHalfwaySample = ataHalfDrySample = ataHalfDiffSample = 0.0;
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ataA = ataB = ataC = ataDrySample = ataDiffSample = ataPrevDiffSample = 0.0;
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ataUpsampleHighTweak = 0.0414213562373095048801688; //more adds treble to upsampling
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ataDecay = 0.915965594177219015; //Catalan's constant, more adds focus and clarity
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ataFlip = false; //end reset of antialias parameters
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iirSampleA = 0; iirSampleB = 0;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// MultiBandDistortion::MultiBandDistortionKernel::Process
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void MultiBandDistortion::MultiBandDistortionKernel::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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Float64 overallscale = 1.0;
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overallscale /= 44100.0;
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overallscale *= GetSampleRate();
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Float64 iirAmount = pow(GetParameter( kParam_One ),3)/overallscale;
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Float64 gainH = pow(10.0,GetParameter( kParam_Two )/20);
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Float64 thresholdH = GetParameter( kParam_Four );
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Float64 hardnessH;
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if (thresholdH < 1.0) hardnessH = 1.0 / (1.0-thresholdH);
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else hardnessH = 999999999999999999999.0;
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Float64 gainL = pow(10.0,GetParameter( kParam_Three )/20);
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Float64 thresholdL = GetParameter( kParam_Five );
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Float64 hardnessL;
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if (thresholdL < 1.0) hardnessL = 1.0 / (1.0-thresholdL);
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else hardnessL = 999999999999999999999.0;
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Float64 breakup = 1.5707963267949;
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Float64 bridgerectifier;
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Float64 outputH = GetParameter( kParam_Six );
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Float64 outputL = GetParameter( kParam_Seven );
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Float64 outputD = GetParameter( kParam_Eight )*0.597;
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Float64 outtrim = outputH + outputL + outputD;
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outputH *= outtrim;
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outputL *= outtrim;
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outputD *= outtrim;
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Float64 outputGlobal = pow(10.0,GetParameter( kParam_Nine )/20);
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Float64 inputSample;
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Float64 tempH;
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Float64 tempL;
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while (nSampleFrames-- > 0) {
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ataDrySample = inputSample = *sourceP;
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ataHalfDrySample = ataHalfwaySample = (inputSample + ataLast1Sample + ((-ataLast2Sample + ataLast3Sample) * ataUpsampleHighTweak)) / 2.0;
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ataLast3Sample = ataLast2Sample; ataLast2Sample = ataLast1Sample; ataLast1Sample = inputSample;
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//setting up oversampled special antialiasing
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//pre-center code on inputSample and halfwaySample in parallel
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//begin interpolated sample- change inputSample -> ataHalfwaySample, ataDrySample -> ataHalfDrySample
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tempL = iirSampleA = (iirSampleA * (1 - iirAmount)) + (ataHalfwaySample * iirAmount);
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tempH = ataHalfwaySample - iirSampleA;
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//highpass section
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tempH *= gainH;
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if (fabs(tempH) > thresholdH)
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{
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bridgerectifier = (fabs(tempH)-thresholdH)*hardnessH;
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//skip flat area if any, scale to distortion limit
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if (bridgerectifier > breakup) bridgerectifier = breakup;
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//max value for sine function, 'breakup' modeling for trashed console tone
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//more hardness = more solidness behind breakup modeling. more softness, more 'grunge' and sag
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bridgerectifier = sin(bridgerectifier)/hardnessH;
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//do the sine factor, scale back to proper amount
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if (tempH > 0) tempH = bridgerectifier+thresholdH;
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else tempH = -(bridgerectifier+thresholdH);
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}
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//ADClip
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tempL *= gainL;
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if (fabs(tempL) > thresholdL)
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{
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bridgerectifier = (fabs(tempL)-thresholdL)*hardnessL;
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//skip flat area if any, scale to distortion limit
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if (bridgerectifier > breakup) bridgerectifier = breakup;
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//max value for sine function, 'breakup' modeling for trashed console tone
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//more hardness = more solidness behind breakup modeling. more softness, more 'grunge' and sag
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bridgerectifier = sin(bridgerectifier)/hardnessL;
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//do the sine factor, scale back to proper amount
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if (tempL > 0) tempL = bridgerectifier+thresholdL;
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else tempL = -(bridgerectifier+thresholdL);
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}
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//ADClip
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ataHalfwaySample = (tempL * outputL) + (tempH * outputH);
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//end interpolated sample
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//begin raw sample- inputSample and ataDrySample handled separately here
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tempL = iirSampleB = (iirSampleB * (1 - iirAmount)) + (inputSample * iirAmount);
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tempH = inputSample - iirSampleB;
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//highpass section
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tempH *= gainH;
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if (fabs(tempH) > thresholdH)
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{
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bridgerectifier = (fabs(tempH)-thresholdH)*hardnessH;
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//skip flat area if any, scale to distortion limit
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if (bridgerectifier > breakup) bridgerectifier = breakup;
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//max value for sine function, 'breakup' modeling for trashed console tone
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//more hardness = more solidness behind breakup modeling. more softness, more 'grunge' and sag
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bridgerectifier = sin(bridgerectifier)/hardnessH;
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//do the sine factor, scale back to proper amount
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if (tempH > 0) tempH = bridgerectifier+thresholdH;
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else tempH = -(bridgerectifier+thresholdH);
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}
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//ADClip
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tempL *= gainL;
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if (fabs(tempL) > thresholdL)
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{
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bridgerectifier = (fabs(tempL)-thresholdL)*hardnessL;
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//skip flat area if any, scale to distortion limit
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if (bridgerectifier > breakup) bridgerectifier = breakup;
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//max value for sine function, 'breakup' modeling for trashed console tone
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//more hardness = more solidness behind breakup modeling. more softness, more 'grunge' and sag
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bridgerectifier = sin(bridgerectifier)/hardnessL;
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//do the sine factor, scale back to proper amount
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if (tempL > 0) tempL = bridgerectifier+thresholdL;
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else tempL = -(bridgerectifier+thresholdL);
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}
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//ADClip
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inputSample = (tempL * outputL) + (tempH * outputH);
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//end raw sample
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//begin center code handling conv stuff tied to 44.1K, or stuff in time domain like delays
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//ataHalfwaySample -= inputSample;
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//retain only difference with raw signal
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//inputSample += convolutionstuff[count];
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//ataHalfwaySample += inputSample;
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//restore interpolated signal including time domain stuff now
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//end center code for handling timedomain/conv stuff
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//post-center code on inputSample and halfwaySample in parallel
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//begin raw sample- inputSample and ataDrySample handled separately here
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//inputSample *= gain;
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//end raw sample
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//begin interpolated sample- change inputSample -> ataHalfwaySample, ataDrySample -> ataHalfDrySample
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//ataHalfwaySample *= gain;
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//end interpolated sample
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//begin antialiasing section for halfway sample
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ataC = ataHalfwaySample - ataHalfDrySample;
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if (ataFlip) {ataA *= ataDecay; ataB *= ataDecay; ataA += ataC; ataB -= ataC; ataC = ataA;}
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else {ataB *= ataDecay; ataA *= ataDecay; ataB += ataC; ataA -= ataC; ataC = ataB;}
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ataHalfDiffSample = (ataC * ataDecay);
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//end antialiasing section for halfway sample
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//begin antialiasing section for raw sample
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ataC = inputSample - ataDrySample;
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if (ataFlip) {ataA *= ataDecay; ataB *= ataDecay; ataA += ataC; ataB -= ataC; ataC = ataA;}
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else {ataB *= ataDecay; ataA *= ataDecay; ataB += ataC; ataA -= ataC; ataC = ataB;}
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ataDiffSample = (ataC * ataDecay);
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//end antialiasing section for input sample
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ataFlip = !ataFlip;
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inputSample = ataDrySample*outputD; inputSample += (ataDiffSample + ataHalfDiffSample);
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//apply processing as difference to non-oversampled raw input
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//inputSample *= output; *destP = (ataDrySample*dry)+(inputSample*wet);
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//built in output trim and dry/wet if desired
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*destP = inputSample*outputGlobal;
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sourceP += inNumChannels; destP += inNumChannels;
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}
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}
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