mirror of
https://github.com/airwindows/airwindows.git
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375 lines
16 KiB
C++
Executable file
375 lines
16 KiB
C++
Executable file
/*
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* File: PunchyGuitar.cpp
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*
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* Version: 1.0
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*
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* Created: 5/19/25
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*
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* Copyright: Copyright © 2025 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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PunchyGuitar.cpp
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=============================================================================*/
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#include "PunchyGuitar.h"
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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COMPONENT_ENTRY(PunchyGuitar)
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// PunchyGuitar::PunchyGuitar
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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PunchyGuitar::PunchyGuitar(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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SetParameter(kParam_I, kDefaultValue_ParamI );
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SetParameter(kParam_J, kDefaultValue_ParamJ );
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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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// PunchyGuitar::GetParameterValueStrings
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult PunchyGuitar::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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// PunchyGuitar::GetParameterInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult PunchyGuitar::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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case kParam_I:
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AUBase::FillInParameterName (outParameterInfo, kParameterIName, 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_ParamI;
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break;
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case kParam_J:
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AUBase::FillInParameterName (outParameterInfo, kParameterJName, 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_ParamJ;
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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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// PunchyGuitar::GetPropertyInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult PunchyGuitar::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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// PunchyGuitar::GetProperty
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult PunchyGuitar::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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// PunchyGuitar::Initialize
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult PunchyGuitar::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 ____PunchyGuitarEffectKernel
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// PunchyGuitar::PunchyGuitarKernel::Reset()
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void PunchyGuitar::PunchyGuitarKernel::Reset()
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{
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for(int x=0; x<17; x++) {
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for(int y=0; y<11; y++) {
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angS[x][y] = 0.0;angA[x][y] = 0.0;
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}
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}
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for(int y=0; y<11; y++) angG[y] = 0.0;
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for(int count = 0; count < 36; count++) {
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iirHPosition[count] = 0.0;
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iirHAngle[count] = 0.0;
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iirBPosition[count] = 0.0;
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iirBAngle[count] = 0.0;
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}
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WasNegative = false;
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ZeroCross = 0;
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gateroller = 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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// PunchyGuitar::PunchyGuitarKernel::Process
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void PunchyGuitar::PunchyGuitarKernel::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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double drive = GetParameter( kParam_A )+0.618033988749894;
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angG[0] = sqrt(GetParameter( kParam_B )*2.0);
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angG[2] = sqrt(GetParameter( kParam_C )*2.0);
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angG[4] = sqrt(GetParameter( kParam_D )*2.0);
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angG[6] = sqrt(GetParameter( kParam_E )*2.0);
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angG[8] = sqrt(GetParameter( kParam_F )*2.0);
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angG[1] = (angG[0]+angG[2])*0.5;
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angG[3] = (angG[2]+angG[4])*0.5;
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angG[5] = (angG[4]+angG[6])*0.5;
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angG[7] = (angG[6]+angG[8])*0.5;
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angG[9] = angG[8];
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int poles = (int)(drive*10.0);
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double hFreq = pow(GetParameter( kParam_G ),overallscale);
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double lFreq = pow(GetParameter( kParam_H ),overallscale+3.0);
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//begin Gate
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double onthreshold = (pow(GetParameter( kParam_I ),3)/3)+0.00018;
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double offthreshold = onthreshold * 1.1;
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double release = 0.028331119964586;
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double absmax = 220.9;
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//end Gate
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double output = GetParameter( kParam_J );
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while (nSampleFrames-- > 0) {
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double inputSample = *sourceP;
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if (fabs(inputSample)<1.18e-23) inputSample = fpd * 1.18e-17;
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//begin Gate
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if (inputSample > 0.0)
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{
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if (WasNegative == true) ZeroCross = absmax * 0.3;
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WasNegative = false;
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} else {
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ZeroCross += 1; WasNegative = true;
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}
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if (ZeroCross > absmax) ZeroCross = absmax;
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if (gate == 0.0)
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{
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//if gate is totally silent
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if (fabs(inputSample) > onthreshold)
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{
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if (gateroller == 0.0) gateroller = ZeroCross;
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else gateroller -= release;
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// trigger from total silence only- if we're active then signal must clear offthreshold
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}
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else gateroller -= release;
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} else {
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//gate is not silent but closing
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if (fabs(inputSample) > offthreshold)
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{
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if (gateroller < ZeroCross) gateroller = ZeroCross;
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else gateroller -= release;
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//always trigger if gate is over offthreshold, otherwise close anyway
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}
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else gateroller -= release;
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}
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if (gateroller < 0.0) gateroller = 0.0;
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for (int x = 0; x < poles; x++) {
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double fr = 0.9/overallscale;
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double band = inputSample; inputSample = 0.0;
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for (int y = 0; y < 9; y++) {
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angA[x][y] = (angA[x][y]*(1.0-fr)) + ((band-angS[x][y])*fr);
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double temp = band; band = ((angS[x][y]+(angA[x][y]*fr)) * (1.0-fr))+(band*fr);
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angS[x][y] = ((angS[x][y]+(angA[x][y]*fr)) * (1.0-fr))+(band*fr);
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inputSample += ((temp-band)*angG[y]);
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fr *= 0.618033988749894;
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}
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inputSample += (band*angG[9]);
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inputSample *= drive;
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inputSample = sin(fmin(fmax(inputSample,-M_PI),M_PI));
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}
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if (gateroller < 1.0)
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{
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gate = gateroller;
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double bridgerectifier = 1-cos(fabs(inputSample));
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if (inputSample > 0) inputSample = (inputSample*gate)+(bridgerectifier*(1.0-gate));
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else inputSample = (inputSample*gate)-(bridgerectifier*(1.0-gate));
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if (gate == 0.0) inputSample = 0.0;
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} else gate = 1.0;
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//end Gate
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double lowSample = inputSample;
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for(int count = 0; count < (3.0+(lFreq*32.0)); count++) {
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iirBAngle[count] = (iirBAngle[count]*(1.0-lFreq))+((lowSample-iirBPosition[count])*lFreq);
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lowSample = ((iirBPosition[count]+(iirBAngle[count]*lFreq))*(1.0-lFreq))+(lowSample*lFreq);
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iirBPosition[count] = ((iirBPosition[count]+(iirBAngle[count]*lFreq))*(1.0-lFreq))+(lowSample*lFreq);
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inputSample -= (lowSample * (1.0/(3.0+(lFreq*32.0))) );
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}
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for(int count = 0; count < (3.0+(hFreq*32.0)); count++) {
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iirHAngle[count] = (iirHAngle[count]*(1.0-hFreq))+((inputSample-iirHPosition[count])*hFreq);
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inputSample = ((iirHPosition[count]+(iirHAngle[count]*hFreq))*(1.0-hFreq))+(inputSample*hFreq);
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iirHPosition[count] = ((iirHPosition[count]+(iirHAngle[count]*hFreq))*(1.0-hFreq))+(inputSample*hFreq);
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} //the lowpass
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inputSample *= output;
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//begin 32 bit floating point dither
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int expon; frexpf((float)inputSample, &expon);
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fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5;
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inputSample += ((double(fpd)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
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//end 32 bit floating point dither
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*destP = inputSample;
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sourceP += inNumChannels; destP += inNumChannels;
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}
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}
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