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Diffstat (limited to 'plugins/MacAU/Holt/Holt.cpp')
| -rwxr-xr-x | plugins/MacAU/Holt/Holt.cpp | 324 |
1 files changed, 324 insertions, 0 deletions
diff --git a/plugins/MacAU/Holt/Holt.cpp b/plugins/MacAU/Holt/Holt.cpp new file mode 100755 index 0000000..fb0f6d8 --- /dev/null +++ b/plugins/MacAU/Holt/Holt.cpp @@ -0,0 +1,324 @@ +/* +* File: Holt.cpp +* +* Version: 1.0 +* +* Created: 2/4/19 +* +* Copyright: Copyright © 2019 Airwindows, All Rights Reserved +* +* Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc. ("Apple") in +* consideration of your agreement to the following terms, and your use, installation, modification +* or redistribution of this Apple software constitutes acceptance of these terms. If you do +* not agree with these terms, please do not use, install, modify or redistribute this Apple +* software. +* +* In consideration of your agreement to abide by the following terms, and subject to these terms, +* Apple grants you a personal, non-exclusive license, under Apple's copyrights in this +* original Apple software (the "Apple Software"), to use, reproduce, modify and redistribute the +* Apple Software, with or without modifications, in source and/or binary forms; provided that if you +* redistribute the Apple Software in its entirety and without modifications, you must retain this +* notice and the following text and disclaimers in all such redistributions of the Apple Software. +* Neither the name, trademarks, service marks or logos of Apple Computer, Inc. may be used to +* endorse or promote products derived from the Apple Software without specific prior written +* permission from Apple. Except as expressly stated in this notice, no other rights or +* licenses, express or implied, are granted by Apple herein, including but not limited to any +* patent rights that may be infringed by your derivative works or by other works in which the +* Apple Software may be incorporated. +* +* The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO WARRANTIES, EXPRESS OR +* IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY +* AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE +* OR IN COMBINATION WITH YOUR PRODUCTS. +* +* IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL +* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS +* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, +* REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER +* UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN +* IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +* +*/ +/*============================================================================= + Holt.cpp + +=============================================================================*/ +#include "Holt.h" + + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +COMPONENT_ENTRY(Holt) + + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// Holt::Holt +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +Holt::Holt(AudioUnit component) + : AUEffectBase(component) +{ + CreateElements(); + Globals()->UseIndexedParameters(kNumberOfParameters); + SetParameter(kParam_One, kDefaultValue_ParamOne ); + SetParameter(kParam_Two, kDefaultValue_ParamTwo ); + SetParameter(kParam_Three, kDefaultValue_ParamThree ); + SetParameter(kParam_Four, kDefaultValue_ParamFour ); + SetParameter(kParam_Five, kDefaultValue_ParamFive ); + +#if AU_DEBUG_DISPATCHER + mDebugDispatcher = new AUDebugDispatcher (this); +#endif + +} + + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// Holt::GetParameterValueStrings +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +ComponentResult Holt::GetParameterValueStrings(AudioUnitScope inScope, + AudioUnitParameterID inParameterID, + CFArrayRef * outStrings) +{ + + return kAudioUnitErr_InvalidProperty; +} + + + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// Holt::GetParameterInfo +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +ComponentResult Holt::GetParameterInfo(AudioUnitScope inScope, + AudioUnitParameterID inParameterID, + AudioUnitParameterInfo &outParameterInfo ) +{ + ComponentResult result = noErr; + + outParameterInfo.flags = kAudioUnitParameterFlag_IsWritable + | kAudioUnitParameterFlag_IsReadable; + + if (inScope == kAudioUnitScope_Global) { + switch(inParameterID) + { + case kParam_One: + AUBase::FillInParameterName (outParameterInfo, kParameterOneName, false); + outParameterInfo.unit = kAudioUnitParameterUnit_Generic; + outParameterInfo.minValue = 0.0; + outParameterInfo.maxValue = 1.0; + outParameterInfo.defaultValue = kDefaultValue_ParamOne; + break; + case kParam_Two: + AUBase::FillInParameterName (outParameterInfo, kParameterTwoName, false); + outParameterInfo.unit = kAudioUnitParameterUnit_Generic; + outParameterInfo.minValue = 0.0; + outParameterInfo.maxValue = 1.0; + outParameterInfo.defaultValue = kDefaultValue_ParamTwo; + break; + case kParam_Three: + AUBase::FillInParameterName (outParameterInfo, kParameterThreeName, false); + outParameterInfo.unit = kAudioUnitParameterUnit_Generic; + outParameterInfo.minValue = 0.0; + outParameterInfo.maxValue = 4.0; + outParameterInfo.defaultValue = kDefaultValue_ParamThree; + break; + case kParam_Four: + AUBase::FillInParameterName (outParameterInfo, kParameterFourName, false); + outParameterInfo.unit = kAudioUnitParameterUnit_Generic; + outParameterInfo.minValue = 0.0; + outParameterInfo.maxValue = 1.0; + outParameterInfo.defaultValue = kDefaultValue_ParamFour; + break; + case kParam_Five: + AUBase::FillInParameterName (outParameterInfo, kParameterFiveName, false); + outParameterInfo.unit = kAudioUnitParameterUnit_Generic; + outParameterInfo.minValue = 0.0; + outParameterInfo.maxValue = 1.0; + outParameterInfo.defaultValue = kDefaultValue_ParamFive; + break; + default: + result = kAudioUnitErr_InvalidParameter; + break; + } + } else { + result = kAudioUnitErr_InvalidParameter; + } + + + + return result; +} + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// Holt::GetPropertyInfo +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +ComponentResult Holt::GetPropertyInfo (AudioUnitPropertyID inID, + AudioUnitScope inScope, + AudioUnitElement inElement, + UInt32 & outDataSize, + Boolean & outWritable) +{ + return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable); +} + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// Holt::GetProperty +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +ComponentResult Holt::GetProperty( AudioUnitPropertyID inID, + AudioUnitScope inScope, + AudioUnitElement inElement, + void * outData ) +{ + return AUEffectBase::GetProperty (inID, inScope, inElement, outData); +} + +// Holt::Initialize +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +ComponentResult Holt::Initialize() +{ + ComponentResult result = AUEffectBase::Initialize(); + if (result == noErr) + Reset(kAudioUnitScope_Global, 0); + return result; +} + +#pragma mark ____HoltEffectKernel + + + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// Holt::HoltKernel::Reset() +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +void Holt::HoltKernel::Reset() +{ + previousSampleA = 0.0; + previousTrendA = 0.0; + previousSampleB = 0.0; + previousTrendB = 0.0; + previousSampleC = 0.0; + previousTrendC = 0.0; + previousSampleD = 0.0; + previousTrendD = 0.0; + fpNShape = 0.0; +} + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// Holt::HoltKernel::Process +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +void Holt::HoltKernel::Process( const Float32 *inSourceP, + Float32 *inDestP, + UInt32 inFramesToProcess, + UInt32 inNumChannels, + bool &ioSilence ) +{ + UInt32 nSampleFrames = inFramesToProcess; + const Float32 *sourceP = inSourceP; + Float32 *destP = inDestP; + + Float64 alpha = pow(GetParameter( kParam_One ),4)+0.00001; + if (alpha > 1.0) alpha = 1.0; + Float64 beta = (alpha * pow(GetParameter( kParam_Two ),2))+0.00001; + alpha += ((1.0-beta)*pow(GetParameter( kParam_One ),3)); //correct for droop in frequency + if (alpha > 1.0) alpha = 1.0; + + long double trend; + long double forecast; //defining these here because we're copying the routine four times + + Float64 aWet = 1.0; + Float64 bWet = 1.0; + Float64 cWet = 1.0; + Float64 dWet = GetParameter( kParam_Three ); + //four-stage wet/dry control using progressive stages that bypass when not engaged + if (dWet < 1.0) {aWet = dWet; bWet = 0.0; cWet = 0.0; dWet = 0.0;} + else if (dWet < 2.0) {bWet = dWet - 1.0; cWet = 0.0; dWet = 0.0;} + else if (dWet < 3.0) {cWet = dWet - 2.0; dWet = 0.0;} + else {dWet -= 3.0;} + //this is one way to make a little set of dry/wet stages that are successively added to the + //output as the control is turned up. Each one independently goes from 0-1 and stays at 1 + //beyond that point: this is a way to progressively add a 'black box' sound processing + //which lets you fall through to simpler processing at lower settings. + + Float64 gain = GetParameter( kParam_Four ); + Float64 wet = GetParameter( kParam_Five ); + + while (nSampleFrames-- > 0) { + long double inputSample = *sourceP; + + static int noisesource = 0; + int residue; + double applyresidue; + noisesource = noisesource % 1700021; noisesource++; + residue = noisesource * noisesource; + residue = residue % 170003; residue *= residue; + residue = residue % 17011; residue *= residue; + residue = residue % 1709; residue *= residue; + residue = residue % 173; residue *= residue; + residue = residue % 17; + applyresidue = residue; + applyresidue *= 0.00000001; + applyresidue *= 0.00000001; + inputSample += applyresidue; + if (inputSample<1.2e-38 && -inputSample<1.2e-38) { + inputSample -= applyresidue; + } + //for live air, we always apply the dither noise. Then, if our result is + //effectively digital black, we'll subtract it again. We want a 'air' hiss + long double drySample = inputSample; + + if (aWet > 0.0) { + trend = (beta * (inputSample - previousSampleA) + ((0.999-beta) * previousTrendA)); + forecast = previousSampleA + previousTrendA; + inputSample = (alpha * inputSample) + ((0.999-alpha) * forecast); + previousSampleA = inputSample; previousTrendA = trend; + inputSample = (inputSample * aWet) + (drySample * (1.0-aWet)); + } + + if (bWet > 0.0) { + trend = (beta * (inputSample - previousSampleB) + ((0.999-beta) * previousTrendB)); + forecast = previousSampleB + previousTrendB; + inputSample = (alpha * inputSample) + ((0.999-alpha) * forecast); + previousSampleB = inputSample; previousTrendB = trend; + inputSample = (inputSample * bWet) + (previousSampleA * (1.0-bWet)); + } + + if (cWet > 0.0) { + trend = (beta * (inputSample - previousSampleC) + ((0.999-beta) * previousTrendC)); + forecast = previousSampleC + previousTrendC; + inputSample = (alpha * inputSample) + ((0.999-alpha) * forecast); + previousSampleC = inputSample; previousTrendC = trend; + inputSample = (inputSample * cWet) + (previousSampleB * (1.0-cWet)); + } + + if (dWet > 0.0) { + trend = (beta * (inputSample - previousSampleD) + ((0.999-beta) * previousTrendD)); + forecast = previousSampleD + previousTrendD; + inputSample = (alpha * inputSample) + ((0.999-alpha) * forecast); + previousSampleD = inputSample; previousTrendD = trend; + inputSample = (inputSample * dWet) + (previousSampleC * (1.0-dWet)); + } + + if (gain < 1.0) { + inputSample *= gain; + } + + //clip to 1.2533141373155 to reach maximum output + if (inputSample > 1.2533141373155) inputSample = 1.2533141373155; + if (inputSample < -1.2533141373155) inputSample = -1.2533141373155; + inputSample = sin(inputSample * fabs(inputSample)) / ((inputSample == 0.0) ?1:fabs(inputSample)); + + if (wet < 1.0) { + inputSample = (inputSample*wet)+(drySample*(1.0-wet)); + } + + + //32 bit dither, made small and tidy. + int expon; frexpf((Float32)inputSample, &expon); + long double dither = (rand()/(RAND_MAX*7.737125245533627e+25))*pow(2,expon+62); + inputSample += (dither-fpNShape); fpNShape = dither; + //end 32 bit dither + + *destP = inputSample; + + sourceP += inNumChannels; destP += inNumChannels; + } +} + |