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325 lines
14 KiB
C++
Executable file
325 lines
14 KiB
C++
Executable file
/*
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* File: Pop2.cpp
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*
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* Version: 1.0
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*
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* Created: 9/19/22
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*
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* Copyright: Copyright © 2022 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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Pop2.cpp
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=============================================================================*/
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#include "Pop2.h"
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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COMPONENT_ENTRY(Pop2)
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Pop2::Pop2
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Pop2::Pop2(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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#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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// Pop2::GetParameterValueStrings
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Pop2::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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// Pop2::GetParameterInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Pop2::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_Generic;
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outParameterInfo.minValue = 0.0;
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outParameterInfo.maxValue = 1.0;
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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_Generic;
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outParameterInfo.minValue = 0.0;
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outParameterInfo.maxValue = 1.0;
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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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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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// Pop2::GetPropertyInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Pop2::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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// Pop2::GetProperty
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Pop2::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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// Pop2::Initialize
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Pop2::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 ____Pop2EffectKernel
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Pop2::Pop2Kernel::Reset()
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void Pop2::Pop2Kernel::Reset()
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{
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muVary = 0.0;
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muAttack = 0.0;
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muNewSpeed = 1000.0;
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muSpeedA = 1000.0;
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muSpeedB = 1000.0;
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muCoefficientA = 1.0;
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muCoefficientB = 1.0;
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flip = false;
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lastSample = 0.0;
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wasPosClip = false;
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wasNegClip = false;
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for (int x = 0; x < 16; x++) intermediate[x] = 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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// Pop2::Pop2Kernel::Process
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void Pop2::Pop2Kernel::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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int spacing = floor(overallscale); //should give us working basic scaling, usually 2 or 4
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if (spacing < 1) spacing = 1; if (spacing > 16) spacing = 16; //for ClipOnly2
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Float64 threshold = 1.0 - ((1.0-pow(1.0-GetParameter( kParam_One ),2))*0.9);
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Float64 attack = ((pow(GetParameter( kParam_Two ),4)*100000.0)+10.0)*overallscale;
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Float64 release = ((pow(GetParameter( kParam_Three ),5)*2000000.0)+20.0)*overallscale;
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Float64 maxRelease = release * 4.0;
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Float64 muPreGain = 1.0/threshold;
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Float64 muMakeupGain = sqrt(1.0 / threshold)*GetParameter( kParam_Four );
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Float64 wet = GetParameter( kParam_Five );
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//compressor section
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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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double drySample = inputSample;
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//begin compressor section
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inputSample *= muPreGain;
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if (flip) {
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if (fabs(inputSample) > threshold) {
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muVary = threshold / fabs(inputSample);
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muAttack = sqrt(fabs(muSpeedA));
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muCoefficientA = muCoefficientA * (muAttack-1.0);
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if (muVary < threshold) muCoefficientA = muCoefficientA + threshold;
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else muCoefficientA = muCoefficientA + muVary;
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muCoefficientA = muCoefficientA / muAttack;
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muNewSpeed = muSpeedA * (muSpeedA-1.0);
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muNewSpeed = muNewSpeed + release;
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muSpeedA = muNewSpeed / muSpeedA;
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if (muSpeedA > maxRelease) muSpeedA = maxRelease;
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} else {
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muCoefficientA = muCoefficientA * ((muSpeedA * muSpeedA)-1.0);
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muCoefficientA = muCoefficientA + 1.0;
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muCoefficientA = muCoefficientA / (muSpeedA * muSpeedA);
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muNewSpeed = muSpeedA * (muSpeedA-1.0);
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muNewSpeed = muNewSpeed + attack;
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muSpeedA = muNewSpeed / muSpeedA;}
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} else {
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if (fabs(inputSample) > threshold) {
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muVary = threshold / fabs(inputSample);
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muAttack = sqrt(fabs(muSpeedB));
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muCoefficientB = muCoefficientB * (muAttack-1.0);
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if (muVary < threshold) muCoefficientB = muCoefficientB + threshold;
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else muCoefficientB = muCoefficientB + muVary;
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muCoefficientB = muCoefficientB / muAttack;
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muNewSpeed = muSpeedB * (muSpeedB-1.0);
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muNewSpeed = muNewSpeed + release;
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muSpeedB = muNewSpeed / muSpeedB;
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if (muSpeedB > maxRelease) muSpeedB = maxRelease;
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} else {
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muCoefficientB = muCoefficientB * ((muSpeedB * muSpeedB)-1.0);
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muCoefficientB = muCoefficientB + 1.0;
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muCoefficientB = muCoefficientB / (muSpeedB * muSpeedB);
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muNewSpeed = muSpeedB * (muSpeedB-1.0);
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muNewSpeed = muNewSpeed + attack;
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muSpeedB = muNewSpeed / muSpeedB;}
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}
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//got coefficients, adjusted speeds
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if (flip) inputSample *= pow(muCoefficientA,2);
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else inputSample *= pow(muCoefficientB,2);
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inputSample *= muMakeupGain;
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flip = !flip;
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//end compressor section
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//begin ClipOnly2 as a little, compressed chunk that can be dropped into code
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if (inputSample > 4.0) inputSample = 4.0; if (inputSample < -4.0) inputSample = -4.0;
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if (wasPosClip == true) { //current will be over
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if (inputSample<lastSample) lastSample=0.7058208+(inputSample*0.2609148);
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else lastSample = 0.2491717+(lastSample*0.7390851);
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} wasPosClip = false;
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if (inputSample>0.9549925859) {wasPosClip=true;inputSample=0.7058208+(lastSample*0.2609148);}
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if (wasNegClip == true) { //current will be -over
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if (inputSample > lastSample) lastSample=-0.7058208+(inputSample*0.2609148);
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else lastSample=-0.2491717+(lastSample*0.7390851);
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} wasNegClip = false;
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if (inputSample<-0.9549925859) {wasNegClip=true;inputSample=-0.7058208+(lastSample*0.2609148);}
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intermediate[spacing] = inputSample;
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inputSample = lastSample; //Latency is however many samples equals one 44.1k sample
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for (int x = spacing; x > 0; x--) intermediate[x-1] = intermediate[x];
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lastSample = intermediate[0]; //run a little buffer to handle this
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//end ClipOnly2 as a little, compressed chunk that can be dropped into code
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if (wet !=1.0) {
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inputSample = (inputSample * wet) + (drySample * (1.0-wet));
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}
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//Dry/Wet control, defaults to the last slider
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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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