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302 lines
13 KiB
C++
Executable file
302 lines
13 KiB
C++
Executable file
/*
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* File: ADClip8.cpp
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*
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* Version: 1.0
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*
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* Created: 2/6/24
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*
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* Copyright: Copyright © 2024 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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ADClip8.cpp
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=============================================================================*/
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#include "ADClip8.h"
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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COMPONENT_ENTRY(ADClip8)
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// ADClip8::ADClip8
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ADClip8::ADClip8(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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#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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// ADClip8::GetParameterValueStrings
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult ADClip8::GetParameterValueStrings(AudioUnitScope inScope,
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AudioUnitParameterID inParameterID,
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CFArrayRef * outStrings)
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{
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if ((inScope == kAudioUnitScope_Global) && (inParameterID == kParam_Three)) //ID must be actual name of parameter identifier, not number
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{
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if (outStrings == NULL) return noErr;
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CFStringRef strings [] =
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{
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kMenuItem_Normal,
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kMenuItem_Gain,
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kMenuItem_Clip,
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kMenuItem_Afterburner,
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kMenuItem_Explode,
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kMenuItem_Nuke,
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kMenuItem_Apocalypse,
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kMenuItem_Apotheosis,
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};
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*outStrings = CFArrayCreate (
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NULL,
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(const void **) strings,
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(sizeof (strings) / sizeof (strings [0])),
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NULL
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);
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return noErr;
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}
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return kAudioUnitErr_InvalidProperty;
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}
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// ADClip8::GetParameterInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult ADClip8::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_Decibels;
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outParameterInfo.minValue = 0.0;
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outParameterInfo.maxValue = 18.0;
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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_Indexed;
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outParameterInfo.minValue = kNormal;
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outParameterInfo.maxValue = kApotheosis;
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outParameterInfo.defaultValue = kDefaultValue_ParamThree;
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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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// ADClip8::GetPropertyInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult ADClip8::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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// ADClip8::GetProperty
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult ADClip8::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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// ADClip8::Initialize
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult ADClip8::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 ____ADClip8EffectKernel
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// ADClip8::ADClip8Kernel::Reset()
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void ADClip8::ADClip8Kernel::Reset()
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{
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for (int stage = 0; stage < 8; stage++) {
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lastSample[stage] = 0.0;
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wasPosClip[stage] = false;
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wasNegClip[stage] = false;
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for (int x = 0; x < 16; x++) intermediate[x][stage] = 0.0;
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}
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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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// ADClip8::ADClip8Kernel::Process
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void ADClip8::ADClip8Kernel::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;
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//double hardness = 0.618033988749894; // golden ratio
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//double softness = 0.381966011250105; // 1.0 - hardness
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//double refclip = 1.618033988749894; // -0.2dB we're making all this pure raw code
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//refclip*hardness = 1.0 to use ClipOnly as a prefab code-chunk.
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//refclip*softness = 0.618033988749894 Seven decimal places is plenty as it's
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//not related to the original sound much: it's an arbitrary position in softening.
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double inputGain = pow(10.0,(GetParameter( kParam_One ))/20.0);
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double ceiling = (1.0+(GetParameter( kParam_Two )*0.23594733))*0.5;
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int mode = (int) GetParameter( kParam_Three );
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int stageSetting = mode-2;
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if (stageSetting < 1) stageSetting = 1;
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inputGain = ((inputGain-1.0)/stageSetting)+1.0;
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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 overshoot = 0.0;
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inputSample *= 1.618033988749894;
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for (int stage = 0; stage < stageSetting; stage++) {
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if (inputGain != 1.0) {
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inputSample *= inputGain;
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}
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if (stage == 0){
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overshoot = fabs(inputSample) - 1.618033988749894;
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if (overshoot < 0.0) overshoot = 0.0;
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}
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if (inputSample > 4.0) inputSample = 4.0; if (inputSample < -4.0) inputSample = -4.0;
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if (inputSample - lastSample[stage] > 0.618033988749894) inputSample = lastSample[stage] + 0.618033988749894;
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if (inputSample - lastSample[stage] < -0.618033988749894) inputSample = lastSample[stage] - 0.618033988749894;
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//same as slew clippage
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//begin ClipOnly2 as a little, compressed chunk that can be dropped into code
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if (wasPosClip[stage] == true) { //current will be over
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if (inputSample<lastSample[stage]) lastSample[stage]=1.0+(inputSample*0.381966011250105);
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else lastSample[stage] = 0.618033988749894+(lastSample[stage]*0.618033988749894);
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} wasPosClip[stage] = false;
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if (inputSample>1.618033988749894) {wasPosClip[stage]=true;inputSample=1.0+(lastSample[stage]*0.381966011250105);}
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if (wasNegClip[stage] == true) { //current will be -over
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if (inputSample > lastSample[stage]) lastSample[stage]=-1.0+(inputSample*0.381966011250105);
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else lastSample[stage]=-0.618033988749894+(lastSample[stage]*0.618033988749894);
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} wasNegClip[stage] = false;
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if (inputSample<-1.618033988749894) {wasNegClip[stage]=true;inputSample=-1.0+(lastSample[stage]*0.381966011250105);}
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intermediate[spacing][stage] = inputSample;
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inputSample = lastSample[stage]; //Latency is however many samples equals one 44.1k sample
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for (int x = spacing; x > 0; x--) intermediate[x-1][stage] = intermediate[x][stage];
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lastSample[stage] = intermediate[0][stage]; //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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}
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switch (mode)
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{
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case 1: break; //Normal
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case 2: inputSample /= inputGain; break; //Gain Match
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case 3: inputSample = overshoot; break; //Clip Only
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case 4: break; //Afterburner
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case 5: break; //Explode
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case 6: break; //Nuke
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case 7: break; //Apocalypse
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case 8: break; //Apotheosis
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}
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//this is our output mode switch, showing the effects
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inputSample *= ceiling;
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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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