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354 lines
15 KiB
C++
Executable file
354 lines
15 KiB
C++
Executable file
/*
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* File: Melt.cpp
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*
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* Version: 1.0
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*
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* Created: 1/12/17
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*
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* Copyright: Copyright © 2017 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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Melt.cpp
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=============================================================================*/
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#include "Melt.h"
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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AUDIOCOMPONENT_ENTRY(AUBaseFactory, Melt)
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Melt::Melt
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Melt::Melt(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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#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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// Melt::GetParameterValueStrings
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Melt::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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// Melt::GetParameterInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Melt::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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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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// Melt::GetPropertyInfo
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Melt::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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// Melt::GetProperty
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Melt::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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// Melt::Initialize
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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ComponentResult Melt::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 ____MeltEffectKernel
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// Melt::MeltKernel::Reset()
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void Melt::MeltKernel::Reset()
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{
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for(int count = 0; count < 32001; count++) {d[count] = 0;}
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for(int count = 0; count < 31; count++) {minTap[count] = 0; maxTap[count] = 0; position[count] = 1; stepTap[count] = 1;}
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combine = 0;
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scalefactor = 0.999;
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stepCount = 0;
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slowCount = 0;
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gcount = 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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// Melt::MeltKernel::Process
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//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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void Melt::MeltKernel::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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Float64 rate = 1 / (pow(GetParameter( kParam_One ),2) + 0.001);
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Float64 depthB = (GetParameter( kParam_Two ) * 139.5)+2;
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Float64 depthA = depthB * (1.0 - GetParameter( kParam_One ));
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Float64 output = GetParameter( kParam_Three ) * 0.05;
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Float64 wet = GetParameter( kParam_Four );
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Float64 dry = 1.0-wet;
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minTap[0] = floor(2 * depthA); maxTap[0] = floor(2 * depthB);
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minTap[1] = floor(3 * depthA); maxTap[1] = floor(3 * depthB);
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minTap[2] = floor(5 * depthA); maxTap[2] = floor(5 * depthB);
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minTap[3] = floor(7 * depthA); maxTap[3] = floor(7 * depthB);
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minTap[4] = floor(11 * depthA); maxTap[4] = floor(11 * depthB);
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minTap[5] = floor(13 * depthA); maxTap[5] = floor(13 * depthB);
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minTap[6] = floor(17 * depthA); maxTap[6] = floor(17 * depthB);
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minTap[7] = floor(19 * depthA); maxTap[7] = floor(19 * depthB);
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minTap[8] = floor(23 * depthA); maxTap[8] = floor(23 * depthB);
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minTap[9] = floor(29 * depthA); maxTap[9] = floor(29 * depthB);
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minTap[10] = floor(31 * depthA); maxTap[10] = floor(31 * depthB);
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minTap[11] = floor(37 * depthA); maxTap[11] = floor(37 * depthB);
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minTap[12] = floor(41 * depthA); maxTap[12] = floor(41 * depthB);
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minTap[13] = floor(43 * depthA); maxTap[13] = floor(43 * depthB);
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minTap[14] = floor(47 * depthA); maxTap[14] = floor(47 * depthB);
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minTap[15] = floor(53 * depthA); maxTap[15] = floor(53 * depthB);
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minTap[16] = floor(59 * depthA); maxTap[16] = floor(59 * depthB);
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minTap[17] = floor(61 * depthA); maxTap[17] = floor(61 * depthB);
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minTap[18] = floor(67 * depthA); maxTap[18] = floor(67 * depthB);
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minTap[19] = floor(71 * depthA); maxTap[19] = floor(71 * depthB);
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minTap[20] = floor(73 * depthA); maxTap[20] = floor(73 * depthB);
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minTap[21] = floor(79 * depthA); maxTap[21] = floor(79 * depthB);
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minTap[22] = floor(83 * depthA); maxTap[22] = floor(83 * depthB);
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minTap[23] = floor(89 * depthA); maxTap[23] = floor(89 * depthB);
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minTap[24] = floor(97 * depthA); maxTap[24] = floor(97 * depthB);
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minTap[25] = floor(101 * depthA); maxTap[25] = floor(101 * depthB);
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minTap[26] = floor(103 * depthA); maxTap[26] = floor(103 * depthB);
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minTap[27] = floor(107 * depthA); maxTap[27] = floor(107 * depthB);
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minTap[28] = floor(109 * depthA); maxTap[28] = floor(109 * depthB);
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minTap[29] = floor(113 * depthA); maxTap[29] = floor(113 * depthB);
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minTap[30] = floor(117 * depthA); maxTap[30] = floor(117 * depthB);
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double drySample;
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double inputSample;
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while (nSampleFrames-- > 0) {
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inputSample = *sourceP;
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if (fabs(inputSample)<1.18e-23) inputSample = fpd * 1.18e-17;
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drySample = inputSample;
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if (gcount < 0 || gcount > 16000) {gcount = 16000;}
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d[gcount+16000] = d[gcount] = inputSample;
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if (slowCount > rate || slowCount < 0) {
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slowCount = 0;
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stepCount++;
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if (stepCount > 29 || stepCount < 0) {stepCount = 0;}
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position[stepCount] += stepTap[stepCount];
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if (position[stepCount] < minTap[stepCount]) {
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position[stepCount] = minTap[stepCount];
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stepTap[stepCount] = 1;
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}
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if (position[stepCount] > maxTap[stepCount]) {
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position[stepCount] = maxTap[stepCount];
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stepTap[stepCount] = -1;
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}
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}
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scalefactor *= 0.9999;
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scalefactor += (100.0 - fabs(combine)) * 0.000001;
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combine *= scalefactor;
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combine -= (d[gcount+position[29]]);
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combine += (d[gcount+position[28]]);
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combine *= scalefactor;
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combine -= (d[gcount+position[27]]);
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combine += (d[gcount+position[26]]);
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combine *= scalefactor;
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combine -= (d[gcount+position[25]]);
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combine += (d[gcount+position[24]]);
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combine *= scalefactor;
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combine -= (d[gcount+position[23]]);
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combine += (d[gcount+position[22]]);
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combine *= scalefactor;
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combine -= (d[gcount+position[21]]);
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combine += (d[gcount+position[20]]);
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combine *= scalefactor;
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combine -= (d[gcount+position[19]]);
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combine += (d[gcount+position[18]]);
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combine *= scalefactor;
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combine -= (d[gcount+position[17]]);
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combine += (d[gcount+position[16]]);
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combine *= scalefactor;
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combine -= (d[gcount+position[15]]);
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combine += (d[gcount+position[14]]);
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combine *= scalefactor;
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combine -= (d[gcount+position[13]]);
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combine += (d[gcount+position[12]]);
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combine *= scalefactor;
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combine -= (d[gcount+position[11]]);
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combine += (d[gcount+position[10]]);
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combine *= scalefactor;
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combine -= (d[gcount+position[9]]);
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combine += (d[gcount+position[8]]);
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combine *= scalefactor;
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combine -= (d[gcount+position[7]]);
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combine += (d[gcount+position[6]]);
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combine *= scalefactor;
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combine -= (d[gcount+position[5]]);
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combine += (d[gcount+position[4]]);
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combine *= scalefactor;
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combine -= (d[gcount+position[3]]);
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combine += (d[gcount+position[2]]);
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combine *= scalefactor;
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combine -= (d[gcount+position[1]]);
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combine += (d[gcount+position[0]]);
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gcount--;
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slowCount++;
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inputSample = combine;
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if (output < 1.0) inputSample *= output;
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if (wet < 1.0) inputSample = (drySample * dry)+(inputSample*wet);
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//nice little output stage template: if we have another scale of floating point
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//number, we really don't want to meaninglessly multiply that by 1.0.
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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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