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Diffstat (limited to 'plugins/MacAU/BitGlitter/BitGlitter.cpp')
| -rwxr-xr-x | plugins/MacAU/BitGlitter/BitGlitter.cpp | 316 |
1 files changed, 316 insertions, 0 deletions
diff --git a/plugins/MacAU/BitGlitter/BitGlitter.cpp b/plugins/MacAU/BitGlitter/BitGlitter.cpp new file mode 100755 index 0000000..2b56681 --- /dev/null +++ b/plugins/MacAU/BitGlitter/BitGlitter.cpp @@ -0,0 +1,316 @@ +/* +* File: BitGlitter.cpp +* +* Version: 1.0 +* +* Created: 7/15/12 +* +* Copyright: Copyright © 2012 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. +* +*/ +/*============================================================================= + BitGlitter.cpp + +=============================================================================*/ +#include "BitGlitter.h" + + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +COMPONENT_ENTRY(BitGlitter) + + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// BitGlitter::BitGlitter +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +BitGlitter::BitGlitter(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 ); + +#if AU_DEBUG_DISPATCHER + mDebugDispatcher = new AUDebugDispatcher (this); +#endif + +} + + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// BitGlitter::GetParameterValueStrings +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +ComponentResult BitGlitter::GetParameterValueStrings(AudioUnitScope inScope, + AudioUnitParameterID inParameterID, + CFArrayRef * outStrings) +{ + + return kAudioUnitErr_InvalidProperty; +} + + + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// BitGlitter::GetParameterInfo +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +ComponentResult BitGlitter::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 = -18.0; + outParameterInfo.maxValue = 18.0; + 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 = -18.0; + outParameterInfo.maxValue = 18.0; + 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; + default: + result = kAudioUnitErr_InvalidParameter; + break; + } + } else { + result = kAudioUnitErr_InvalidParameter; + } + + + + return result; +} + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// BitGlitter::GetPropertyInfo +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +ComponentResult BitGlitter::GetPropertyInfo (AudioUnitPropertyID inID, + AudioUnitScope inScope, + AudioUnitElement inElement, + UInt32 & outDataSize, + Boolean & outWritable) +{ + return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable); +} + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// BitGlitter::GetProperty +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +ComponentResult BitGlitter::GetProperty( AudioUnitPropertyID inID, + AudioUnitScope inScope, + AudioUnitElement inElement, + void * outData ) +{ + return AUEffectBase::GetProperty (inID, inScope, inElement, outData); +} + +// BitGlitter::Initialize +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +ComponentResult BitGlitter::Initialize() +{ + ComponentResult result = AUEffectBase::Initialize(); + if (result == noErr) + Reset(kAudioUnitScope_Global, 0); + return result; +} + +#pragma mark ____BitGlitterEffectKernel + + + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// BitGlitter::BitGlitterKernel::Reset() +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +void BitGlitter::BitGlitterKernel::Reset() +{ + ataLastSample = 0.0; + ataHalfwaySample = 0.0; + lastSample = 0.0; + heldSampleA = 0.0; + positionA = 0.0; + heldSampleB = 0.0; + positionB = 0.0; + lastOutputSample = 0.0; +} + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// BitGlitter::BitGlitterKernel::Process +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +void BitGlitter::BitGlitterKernel::Process( const Float32 *inSourceP, + Float32 *inDestP, + UInt32 inFramesToProcess, + UInt32 inNumChannels, + bool &ioSilence ) +{ + UInt32 nSampleFrames = inFramesToProcess; + const Float32 *sourceP = inSourceP; + Float32 *destP = inDestP; + Float64 overallscale = 1.0; + overallscale /= 44100.0; + overallscale *= GetSampleRate(); + Float64 factor = GetParameter( kParam_Two )+1.0; + factor = pow(factor,7)+2.0; + int divvy = (int)(factor*overallscale); + Float64 rateA = 1.0 / divvy; + Float64 rezA = 0.0016666666666667; //looks to be a fixed bitcrush + Float64 rateB = 1.61803398875 / divvy; + Float64 rezB = 0.0026666666666667; //looks to be a fixed bitcrush + Float64 offset; + Float64 ingain = pow(10.0,GetParameter( kParam_One )/14.0); //add adjustment factor + Float64 outgain = pow(10.0,GetParameter( kParam_Three )/14.0); //add adjustment factor + Float64 wet = GetParameter( kParam_Four ); + + + while (nSampleFrames-- > 0) { + long double inputSample = *sourceP; + long double drySample = inputSample; + //first, the distortion section + inputSample *= ingain; + + if (inputSample > 1.0) inputSample = 1.0; + if (inputSample < -1.0) inputSample = -1.0; + inputSample *= 1.2533141373155; + //clip to 1.2533141373155 to reach maximum output + inputSample = sin(inputSample * fabs(inputSample)) / ((inputSample == 0.0) ?1:fabs(inputSample)); + + ataDrySample = inputSample; + ataHalfwaySample = (inputSample + ataLastSample ) / 2.0; + ataLastSample = inputSample; + //setting up crude oversampling + + //begin raw sample + positionA += rateA; + long double outputSample = heldSampleA; + if (positionA > 1.0) + { + positionA -= 1.0; + heldSampleA = (lastSample * positionA) + (inputSample * (1-positionA)); + outputSample = (outputSample * 0.5) + (heldSampleA * 0.5); + //softens the edge of the derez + } + if (outputSample > 0) + { + offset = outputSample; + while (offset > 0) {offset -= rezA;} + outputSample -= offset; + //it's below 0 so subtracting adds the remainder + } + if (outputSample < 0) + { + offset = outputSample; + while (offset < 0) {offset += rezA;} + outputSample -= offset; + //it's above 0 so subtracting subtracts the remainder + } + outputSample *= (1.0 - rezA); + if (fabs(outputSample) < rezA) outputSample = 0.0; + inputSample = outputSample; + //end raw sample + + //begin interpolated sample + positionB += rateB; + outputSample = heldSampleB; + if (positionB > 1.0) + { + positionB -= 1.0; + heldSampleB = (lastSample * positionB) + (ataHalfwaySample * (1-positionB)); + outputSample = (outputSample * 0.5) + (heldSampleB * 0.5); + //softens the edge of the derez + } + if (outputSample > 0) + { + offset = outputSample; + while (offset > 0) {offset -= rezB;} + outputSample -= offset; + //it's below 0 so subtracting adds the remainder + } + if (outputSample < 0) + { + offset = outputSample; + while (offset < 0) {offset += rezB;} + outputSample -= offset; + //it's above 0 so subtracting subtracts the remainder + } + outputSample *= (1.0 - rezB); + if (fabs(outputSample) < rezB) outputSample = 0.0; + ataHalfwaySample = outputSample; + //end interpolated sample + + inputSample += ataHalfwaySample; + inputSample /= 2.0; + //plain old blend the two + + outputSample = (inputSample * (1.0-(wet/2))) + (lastOutputSample*(wet/2)); + //darken to extent of wet in wet/dry, maximum 50% + lastOutputSample = inputSample; + outputSample *= outgain; + + if (wet < 1.0) { + outputSample = (drySample * (1.0-wet)) + (outputSample * wet); + } + + *destP = outputSample; + + sourceP += inNumChannels; destP += inNumChannels; + } +} + |