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315 lines
14 KiB
C++
Executable file
315 lines
14 KiB
C++
Executable file
/*
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* File: BezEQ3.cpp
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*
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* Version: 1.0
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*
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* Created: 3/30/26
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*
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* Copyright: Copyright © 2026 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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BezEQ3.cpp
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=============================================================================*/
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#include "BezEQ3.h"
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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AUDIOCOMPONENT_ENTRY(AUBaseFactory, BezEQ3)
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// BezEQ3::BezEQ3
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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BezEQ3::BezEQ3(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_A, kDefaultValue_ParamA );
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SetParameter(kParam_B, kDefaultValue_ParamB );
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SetParameter(kParam_C, kDefaultValue_ParamC );
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SetParameter(kParam_D, kDefaultValue_ParamD );
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SetParameter(kParam_E, kDefaultValue_ParamE );
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SetParameter(kParam_F, kDefaultValue_ParamF );
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SetParameter(kParam_G, kDefaultValue_ParamG );
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SetParameter(kParam_H, kDefaultValue_ParamH );
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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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// BezEQ3::GetParameterValueStrings
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult BezEQ3::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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// BezEQ3::GetParameterInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult BezEQ3::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_A:
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AUBase::FillInParameterName (outParameterInfo, kParameterAName, 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_ParamA;
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break;
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case kParam_B:
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AUBase::FillInParameterName (outParameterInfo, kParameterBName, 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_ParamB;
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break;
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case kParam_C:
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AUBase::FillInParameterName (outParameterInfo, kParameterCName, 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_ParamC;
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break;
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case kParam_D:
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AUBase::FillInParameterName (outParameterInfo, kParameterDName, 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_ParamD;
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break;
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case kParam_E:
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AUBase::FillInParameterName (outParameterInfo, kParameterEName, 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_ParamE;
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break;
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case kParam_F:
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AUBase::FillInParameterName (outParameterInfo, kParameterFName, 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_ParamF;
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break;
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case kParam_G:
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AUBase::FillInParameterName (outParameterInfo, kParameterGName, 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_ParamG;
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break;
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case kParam_H:
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AUBase::FillInParameterName (outParameterInfo, kParameterHName, 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_ParamH;
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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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// BezEQ3::GetPropertyInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult BezEQ3::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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// BezEQ3::GetProperty
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult BezEQ3::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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// BezEQ3::Initialize
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult BezEQ3::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 ____BezEQ3EffectKernel
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// BezEQ3::BezEQ3Kernel::Reset()
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void BezEQ3::BezEQ3Kernel::Reset()
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{
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for (int x = 0; x < bez_total; x++) {for (int y = 0; y < 3; y++) bezEQ[x][y] = 0.0;}
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fpd = 1.0; while (fpd < 16386) fpd = rand()*UINT32_MAX;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// BezEQ3::BezEQ3Kernel::Process
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void BezEQ3::BezEQ3Kernel::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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double overallscale = 1.0;
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overallscale /= 44100.0;
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overallscale *= GetSampleRate();
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//begin BezEQ3 control setup
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double highGain = (pow(GetParameter( kParam_A )+0.5,3.0)+3.0)*0.25;
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double hmidGain = (pow(GetParameter( kParam_B )+0.5,3.0)+3.0)*0.25;
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double lmidGain = (pow(GetParameter( kParam_C )+0.5,3.0)+3.0)*0.25;
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double bassGain = (pow(GetParameter( kParam_D )+0.5,3.0)+3.0)*0.25;
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double trebleRef = (1.0-pow(1.0-GetParameter( kParam_E ),2.0))-0.5;
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double highmidRef = GetParameter( kParam_F )-0.5;
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double lowmidRef = GetParameter( kParam_G )-0.5;
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double bassRef = pow(GetParameter( kParam_H ),2.0)-0.5;
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double HMderez = pow(0.75 + ((trebleRef+trebleRef+trebleRef+highmidRef)*0.125),1.618) /overallscale;
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double LMderez = pow(0.25 + ((lowmidRef+bassRef+bassRef+bassRef)*0.125),1.618) /overallscale;
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double Mderez = pow((HMderez*0.5)+(LMderez*0.5)+((highmidRef+lowmidRef)*0.125),1.618) /overallscale;
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int stepped = 999999; if (HMderez > 0.000001) stepped = (int)(1.0/HMderez);
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HMderez = 1.0 / stepped;
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double HMtrim = 1.0-(HMderez*((double)stepped/(stepped+1.0)));
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stepped = 999999; if (Mderez > 0.000001) stepped = (int)(1.0/Mderez);
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Mderez = 1.0 / stepped;
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double Mtrim = 1.0-(Mderez*((double)stepped/(stepped+1.0)));
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stepped = 999999; if (LMderez > 0.000001) stepped = (int)(1.0/LMderez);
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LMderez = 1.0 / stepped;
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double LMtrim = 1.0-(LMderez*((double)stepped/(stepped+1.0)));
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//end BezEQ3 control setup
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while (nSampleFrames-- > 0) {
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double inputSampleL = *sourceP;
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if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpd * 1.18e-17;
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//begin BezEQ3
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for (int p = 0; p < 3; p++) {
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double high = inputSampleL;
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bezEQ[bez_HMcycle][p] += HMderez;
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bezEQ[bez_HMAL][p] += (high * HMderez);
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if (bezEQ[bez_HMcycle][p] > 1.0) {
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bezEQ[bez_HMDL][p] = bezEQ[bez_HMCL][p]; bezEQ[bez_HMCL][p] = bezEQ[bez_HMBL][p];
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bezEQ[bez_HMBL][p] = bezEQ[bez_HMAL][p]*(0.5-(HMderez*0.082));
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bezEQ[bez_HMAL][p] = 0.0; bezEQ[bez_HMcycle][p] = 0.0;
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}
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double X = bezEQ[bez_HMcycle][p]*HMtrim;
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double hmid = bezEQ[bez_HMCL][p]+(bezEQ[bez_HMDL][p]*(1.0-X)*(1.0-X));
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hmid += (bezEQ[bez_HMCL][p]*2.0*(1.0-X)*X)+(bezEQ[bez_HMBL][p]*X*X);
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high -= hmid; //final high and hmid
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bezEQ[bez_Mcycle][p] += Mderez;
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bezEQ[bez_MAL][p] += (hmid * Mderez);
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if (bezEQ[bez_Mcycle][p] > 1.0) {
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bezEQ[bez_MDL][p] = bezEQ[bez_MCL][p]; bezEQ[bez_MCL][p] = bezEQ[bez_MBL][p];
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bezEQ[bez_MBL][p] = bezEQ[bez_MAL][p]*(0.5-(Mderez*0.082));
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bezEQ[bez_MAL][p] = 0.0; bezEQ[bez_Mcycle][p] = 0.0;
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}
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X = bezEQ[bez_Mcycle][p]*Mtrim;
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double lmid = bezEQ[bez_MCL][p]+(bezEQ[bez_MDL][p]*(1.0-X)*(1.0-X));
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lmid += (bezEQ[bez_MCL][p]*2.0*(1.0-X)*X)+(bezEQ[bez_MBL][p]*X*X);
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hmid -= lmid; //final hmid and lmid
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bezEQ[bez_LMcycle][p] += LMderez;
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bezEQ[bez_LMAL][p] += (lmid * LMderez);
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if (bezEQ[bez_LMcycle][p] > 1.0) {
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bezEQ[bez_LMDL][p] = bezEQ[bez_LMCL][p]; bezEQ[bez_LMCL][p] = bezEQ[bez_LMBL][p];
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bezEQ[bez_LMBL][p] = bezEQ[bez_LMAL][p]*(0.5-(LMderez*0.082));
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bezEQ[bez_LMAL][p] = 0.0; bezEQ[bez_LMcycle][p] = 0.0;
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}
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X = bezEQ[bez_LMcycle][p]*LMtrim;
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double bass = bezEQ[bez_LMCL][p]+(bezEQ[bez_LMDL][p]*(1.0-X)*(1.0-X));
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bass += (bezEQ[bez_LMCL][p]*2.0*(1.0-X)*X)+(bezEQ[bez_LMBL][p]*X*X);
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lmid -= bass; //final lmid and bass
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inputSampleL = (high*highGain)+(hmid*hmidGain)+(lmid*lmidGain)+(bass*bassGain);
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}
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//end BezEQ3
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//begin 32 bit floating point dither
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int expon; frexpf((float)inputSampleL, &expon);
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fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5;
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inputSampleL += ((double(fpd)-uint32_t(0x7fffffff)) * 3.553e-44l * pow(2,expon+62));
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//end 32 bit floating point dither
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*destP = inputSampleL;
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sourceP += inNumChannels; destP += inNumChannels;
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}
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}
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