diff options
Diffstat (limited to 'plugins/MacAU/ButterComp2/ButterComp2.cpp')
| -rwxr-xr-x | plugins/MacAU/ButterComp2/ButterComp2.cpp | 339 |
1 files changed, 339 insertions, 0 deletions
diff --git a/plugins/MacAU/ButterComp2/ButterComp2.cpp b/plugins/MacAU/ButterComp2/ButterComp2.cpp new file mode 100755 index 0000000..e85626f --- /dev/null +++ b/plugins/MacAU/ButterComp2/ButterComp2.cpp @@ -0,0 +1,339 @@ +/* +* File: ButterComp2.cpp +* +* Version: 1.0 +* +* Created: 9/22/18 +* +* Copyright: Copyright © 2018 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. +* +*/ +/*============================================================================= + ButterComp2.cpp + +=============================================================================*/ +#include "ButterComp2.h" + + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +COMPONENT_ENTRY(ButterComp2) + + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// ButterComp2::ButterComp2 +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +ButterComp2::ButterComp2(AudioUnit component) + : AUEffectBase(component) +{ + CreateElements(); + Globals()->UseIndexedParameters(kNumberOfParameters); + SetParameter(kParam_One, kDefaultValue_ParamOne ); + SetParameter(kParam_Two, kDefaultValue_ParamTwo ); + SetParameter(kParam_Three, kDefaultValue_ParamThree ); + +#if AU_DEBUG_DISPATCHER + mDebugDispatcher = new AUDebugDispatcher (this); +#endif + +} + + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// ButterComp2::GetParameterValueStrings +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +ComponentResult ButterComp2::GetParameterValueStrings(AudioUnitScope inScope, + AudioUnitParameterID inParameterID, + CFArrayRef * outStrings) +{ + + return kAudioUnitErr_InvalidProperty; +} + + + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// ButterComp2::GetParameterInfo +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +ComponentResult ButterComp2::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 = 2.0; + outParameterInfo.defaultValue = kDefaultValue_ParamTwo; + break; + case kParam_Three: + AUBase::FillInParameterName (outParameterInfo, kParameterThreeName, false); + outParameterInfo.unit = kAudioUnitParameterUnit_Generic; + outParameterInfo.minValue = 0.0; + outParameterInfo.maxValue = 1.0; + outParameterInfo.defaultValue = kDefaultValue_ParamThree; + break; + default: + result = kAudioUnitErr_InvalidParameter; + break; + } + } else { + result = kAudioUnitErr_InvalidParameter; + } + + + + return result; +} + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// ButterComp2::GetPropertyInfo +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +ComponentResult ButterComp2::GetPropertyInfo (AudioUnitPropertyID inID, + AudioUnitScope inScope, + AudioUnitElement inElement, + UInt32 & outDataSize, + Boolean & outWritable) +{ + return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable); +} + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// ButterComp2::GetProperty +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +ComponentResult ButterComp2::GetProperty( AudioUnitPropertyID inID, + AudioUnitScope inScope, + AudioUnitElement inElement, + void * outData ) +{ + return AUEffectBase::GetProperty (inID, inScope, inElement, outData); +} + +// ButterComp2::Initialize +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +ComponentResult ButterComp2::Initialize() +{ + ComponentResult result = AUEffectBase::Initialize(); + if (result == noErr) + Reset(kAudioUnitScope_Global, 0); + return result; +} + +#pragma mark ____ButterComp2EffectKernel + + + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// ButterComp2::ButterComp2Kernel::Reset() +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +void ButterComp2::ButterComp2Kernel::Reset() +{ + controlApos = 1.0; + controlAneg = 1.0; + controlBpos = 1.0; + controlBneg = 1.0; + targetpos = 1.0; + targetneg = 1.0; + flip = false; + lastOutput = 0.0; + fpNShape = 0.0; +} + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// ButterComp2::ButterComp2Kernel::Process +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +void ButterComp2::ButterComp2Kernel::Process( const Float32 *inSourceP, + Float32 *inDestP, + UInt32 inFramesToProcess, + UInt32 inNumChannels, + bool &ioSilence ) +{ + UInt32 nSampleFrames = inFramesToProcess; + const Float32 *sourceP = inSourceP; + Float32 *destP = inDestP; + Float64 overallscale = 2.0; + overallscale /= 44100.0; + overallscale *= GetSampleRate(); + + Float64 inputgain = pow(10.0,(GetParameter( kParam_One )*14.0)/20.0); + Float64 compfactor = 0.012 * (GetParameter( kParam_One ) / 135.0); + Float64 output = GetParameter( kParam_Two ); + Float64 wet = GetParameter( kParam_Three ); + Float64 dry = 1.0 - wet; + Float64 outputgain = inputgain; + outputgain -= 1.0; + outputgain /= 1.5; + outputgain += 1.0; + + 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 + double drySample = inputSample; + + inputSample *= inputgain; + + long double divisor = compfactor / (1.0+fabs(lastOutput)); + //this is slowing compressor recovery while output waveforms were high + divisor /= overallscale; + long double remainder = divisor; + divisor = 1.0 - divisor; + //recalculate divisor every sample + + long double inputpos = inputSample + 1.0; + if (inputpos < 0.0) inputpos = 0.0; + long double outputpos = inputpos / 2.0; + if (outputpos > 1.0) outputpos = 1.0; + inputpos *= inputpos; + targetpos *= divisor; + targetpos += (inputpos * remainder); + long double calcpos = pow((1.0/targetpos),2); + + long double inputneg = (-inputSample) + 1.0; + if (inputneg < 0.0) inputneg = 0.0; + long double outputneg = inputneg / 2.0; + if (outputneg > 1.0) outputneg = 1.0; + inputneg *= inputneg; + targetneg *= divisor; + targetneg += (inputneg * remainder); + long double calcneg = pow((1.0/targetneg),2); + //now we have mirrored targets for comp + //outputpos and outputneg go from 0 to 1 + + if (inputSample > 0) + { //working on pos + if (flip) + { + controlApos *= divisor; + controlApos += (calcpos*remainder); + + } + else + { + controlBpos *= divisor; + controlBpos += (calcpos*remainder); + } + } + else + { //working on neg + if (flip) + { + controlAneg *= divisor; + controlAneg += (calcneg*remainder); + } + else + { + controlBneg *= divisor; + controlBneg += (calcneg*remainder); + } + } + //this causes each of the four to update only when active and in the correct 'flip' + + long double totalmultiplier; + if (flip) + {totalmultiplier = (controlApos * outputpos) + (controlAneg * outputneg);} + else + {totalmultiplier = (controlBpos * outputpos) + (controlBneg * outputneg);} + //this combines the sides according to flip, blending relative to the input value + + inputSample *= totalmultiplier; + inputSample /= outputgain; + + if (output != 1.0) { + inputSample *= output; + } + + if (wet !=1.0) { + inputSample = (inputSample * wet) + (drySample * dry); + } + //Dry/Wet control, defaults to the last slider + + lastOutput = inputSample; + //we will make this factor respond to use of dry/wet + + flip = !flip; + + //noise shaping to 32-bit floating point + Float32 fpTemp = inputSample; + fpNShape += (inputSample-fpTemp); + inputSample += fpNShape; + //for deeper space and warmth, we try a non-oscillating noise shaping + //that is kind of ruthless: it will forever retain the rounding errors + //except we'll dial it back a hair at the end of every buffer processed + //end noise shaping on 32 bit output + + *destP = inputSample; + + sourceP += inNumChannels; destP += inNumChannels; + } + fpNShape *= 0.999999; + //we will just delicately dial back the FP noise shaping, not even every sample + //this is a good place to put subtle 'no runaway' calculations, though bear in mind + //that it will be called more often when you use shorter sample buffers in the DAW. + //So, very low latency operation will call these calculations more often. +} + |