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302 lines
12 KiB
C++
Executable file
302 lines
12 KiB
C++
Executable file
/*
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* File: BezEQ2.cpp
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*
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* Version: 1.0
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*
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* Created: 2/10/26
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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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BezEQ2.cpp
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=============================================================================*/
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#include "BezEQ2.h"
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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COMPONENT_ENTRY(BezEQ2)
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// BezEQ2::BezEQ2
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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BezEQ2::BezEQ2(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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#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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// BezEQ2::GetParameterValueStrings
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult BezEQ2::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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// BezEQ2::GetParameterInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult BezEQ2::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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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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// BezEQ2::GetPropertyInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult BezEQ2::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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// BezEQ2::GetProperty
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult BezEQ2::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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// BezEQ2::Initialize
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult BezEQ2::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 ____BezEQ2EffectKernel
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// BezEQ2::BezEQ2Kernel::Reset()
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void BezEQ2::BezEQ2Kernel::Reset()
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{
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for (int x = 0; x < bez_total; x++) {bezA[x] = 0.0; bezB[x] = 0.0;}
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bezA[bez_cycle] = 1.0; bezB[bez_cycle] = 1.0;
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for(int count = 0; count < predelay+2; count++) {aL[count] = 0.0; bL[count] = 0.0;}
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countA = 1; countB = 1;
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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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// BezEQ2::BezEQ2Kernel::Process
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void BezEQ2::BezEQ2Kernel::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 trebleGain = (GetParameter( kParam_A ) * 2.0);
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double derezA = GetParameter( kParam_B )/overallscale;
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if (derezA < 0.00001) derezA = 0.00001; if (derezA > 1.0) derezA = 1.0;
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int midDelay = (int)(1.0/derezA);
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if (midDelay > 4096) midDelay = 4096;
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derezA = 1.0 / midDelay;
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double midTrim = (double)midDelay/(midDelay+1.0);
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midTrim = 1.0-(derezA*midTrim);
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midDelay = (int)(midDelay*0.5*midTrim);
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double midGain = (GetParameter( kParam_C ) * 2.0);
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double derezB = pow(GetParameter( kParam_D ),2.0)/overallscale;
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if (derezB < 0.00001) derezB = 0.00001; if (derezB > 1.0) derezB = 1.0;
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int bassDelay = (int)(1.0/derezB);
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if (bassDelay > 4096) bassDelay = 4096;
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derezB = 1.0 / bassDelay;
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double bassTrim = (double)bassDelay/(bassDelay+1.0);
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bassTrim = 1.0-(derezB*bassTrim);
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bassDelay = (int)(bassDelay*0.5*bassTrim);
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double bassGain = (GetParameter( kParam_E ) * 2.0);
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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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bezA[bez_cycle] += derezA;
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bezA[bez_SampL] += (inputSampleL * derezA);
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if (bezA[bez_cycle] > 1.0) {
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bezA[bez_cycle] = 0.0;
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bezA[bez_CL] = bezA[bez_BL];
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bezA[bez_BL] = bezA[bez_AL];
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bezA[bez_AL] = bezA[bez_SampL];
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bezA[bez_SampL] = 0.0;
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}
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double X = bezA[bez_cycle]*midTrim;
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double CBL = (bezA[bez_CL]*(1.0-X))+(bezA[bez_BL]*X);
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double BAL = (bezA[bez_BL]*(1.0-X))+(bezA[bez_AL]*X);
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double midL = (bezA[bez_BL]+(CBL*(1.0-X))+(BAL*X))*0.25;
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//predelay
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aL[countA] = inputSampleL;
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countA++; if (countA < 0 || countA > midDelay) countA = 0;
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inputSampleL = aL[countA-((countA > midDelay)?midDelay+1:0)];
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//end predelay
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double trebleL = inputSampleL - midL;
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bezB[bez_cycle] += derezB;
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bezB[bez_SampL] += (midL * derezB);
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if (bezB[bez_cycle] > 1.0) {
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bezB[bez_cycle] = 0.0;
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bezB[bez_CL] = bezB[bez_BL];
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bezB[bez_BL] = bezB[bez_AL];
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bezB[bez_AL] = bezB[bez_SampL];
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bezB[bez_SampL] = 0.0;
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}
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X = bezB[bez_cycle]*bassTrim;
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CBL = (bezB[bez_CL]*(1.0-X))+(bezB[bez_BL]*X);
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BAL = (bezB[bez_BL]*(1.0-X))+(bezB[bez_AL]*X);
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double bassL = (bezB[bez_BL]+(CBL*(1.0-X))+(BAL*X))*0.25;
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if (midGain > 0.0001) midL += (trebleL*(trebleGain/midGain));
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//predelay
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bL[countB] = midL;
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countB++; if (countB < 0 || countB > bassDelay) countB = 0;
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midL = bL[countB-((countB > bassDelay)?bassDelay+1:0)];
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//end predelay
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midL -= bassL;
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inputSampleL = (bassL*bassGain) + (midL*midGain);
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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)) * 5.5e-36l * 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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