/* * File: Deckwrecka.cpp * * Version: 1.0 * * Created: 10/23/13 * * Copyright: Copyright © 2013 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. 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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. * */ /*============================================================================= Deckwrecka.cpp =============================================================================*/ #include "Deckwrecka.h" //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ COMPONENT_ENTRY(Deckwrecka) //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Deckwrecka::Deckwrecka //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Deckwrecka::Deckwrecka(AudioUnit component) : AUEffectBase(component) { CreateElements(); Globals()->UseIndexedParameters(kNumberOfParameters); SetParameter(kParam_One, kDefaultValue_ParamOne ); #if AU_DEBUG_DISPATCHER mDebugDispatcher = new AUDebugDispatcher (this); #endif } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Deckwrecka::GetParameterValueStrings //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Deckwrecka::GetParameterValueStrings(AudioUnitScope inScope, AudioUnitParameterID inParameterID, CFArrayRef * outStrings) { return kAudioUnitErr_InvalidProperty; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Deckwrecka::GetParameterInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Deckwrecka::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; default: result = kAudioUnitErr_InvalidParameter; break; } } else { result = kAudioUnitErr_InvalidParameter; } return result; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Deckwrecka::GetPropertyInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Deckwrecka::GetPropertyInfo (AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, UInt32 & outDataSize, Boolean & outWritable) { return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable); } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Deckwrecka::GetProperty //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Deckwrecka::GetProperty( AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, void * outData ) { return AUEffectBase::GetProperty (inID, inScope, inElement, outData); } // Deckwrecka::Initialize //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Deckwrecka::Initialize() { ComponentResult result = AUEffectBase::Initialize(); if (result == noErr) Reset(kAudioUnitScope_Global, 0); return result; } #pragma mark ____DeckwreckaEffectKernel //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Deckwrecka::DeckwreckaKernel::Reset() //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ void Deckwrecka::DeckwreckaKernel::Reset() { bflip = 1; iirHeadBumpA = 0.0; iirHeadBumpB = 0.0; iirHeadBumpC = 0.0; iirSampleA = 0.0; iirSampleB = 0.0; iirSampleC = 0.0; iirSampleD = 0.0; iirSampleE = 0.0; iirSampleF = 0.0; iirSampleG = 0.0; iirSampleH = 0.0; iirSampleI = 0.0; iirSampleJ = 0.0; iirSampleK = 0.0; iirSampleL = 0.0; iirSampleM = 0.0; iirSampleN = 0.0; iirSampleO = 0.0; iirSampleP = 0.0; iirSampleQ = 0.0; iirSampleR = 0.0; iirSampleS = 0.0; iirSampleT = 0.0; iirSampleU = 0.0; iirSampleV = 0.0; iirSampleW = 0.0; iirSampleX = 0.0; iirSampleY = 0.0; iirSampleZ = 0.0; fpd = 17; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Deckwrecka::DeckwreckaKernel::Process //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ void Deckwrecka::DeckwreckaKernel::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 wreck = pow(GetParameter( kParam_One ),2); Float64 randy; Float64 HeadBump = 0.0; Float64 HeadBumpFreq = 0.01/overallscale; Float64 iirHPAmount = 0.0000014/overallscale; Float64 altHPAmount = 1.0 - iirHPAmount; Float64 inputSample; Float64 tempSample; Float64 bridgerectifier; Float64 correction; while (nSampleFrames-- > 0) { inputSample = *sourceP; if (fabs(inputSample)<1.18e-37) inputSample = fpd * 1.18e-37; randy = (rand()/(double)RAND_MAX); randy += (rand()/(double)RAND_MAX); randy += (rand()/(double)RAND_MAX); randy += (rand()/(double)RAND_MAX); randy += (rand()/(double)RAND_MAX); randy += (rand()/(double)RAND_MAX); randy /= 6.0; randy *= wreck; //0 to 1 the noise, may not be needed //set up the noise switch (bflip) { case 1: iirHeadBumpA += (inputSample * randy); iirHeadBumpA -= (iirHeadBumpA * iirHeadBumpA * iirHeadBumpA * HeadBumpFreq); break; case 2: iirHeadBumpB += (inputSample * randy); iirHeadBumpB -= (iirHeadBumpB * iirHeadBumpB * iirHeadBumpB * HeadBumpFreq); break; case 3: iirHeadBumpC += (inputSample * randy); iirHeadBumpC -= (iirHeadBumpC * iirHeadBumpC * iirHeadBumpC * HeadBumpFreq); break; } HeadBump = iirHeadBumpA + iirHeadBumpB + iirHeadBumpC; bflip++; if (bflip < 1 || bflip > 3) bflip = 1; tempSample = HeadBump; iirSampleA = (iirSampleA * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleA; correction = iirSampleA; iirSampleB = (iirSampleB * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleB; correction += iirSampleB; iirSampleC = (iirSampleC * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleC; correction += iirSampleC; iirSampleD = (iirSampleD * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleD; correction += iirSampleD; iirSampleE = (iirSampleE * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleE; correction += iirSampleE; iirSampleF = (iirSampleF * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleF; correction += iirSampleF; iirSampleG = (iirSampleG * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleG; correction += iirSampleG; iirSampleH = (iirSampleH * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleH; correction += iirSampleH; iirSampleI = (iirSampleI * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleI; correction += iirSampleI; iirSampleJ = (iirSampleJ * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleJ; correction += iirSampleJ; iirSampleK = (iirSampleK * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleK; correction += iirSampleK; iirSampleL = (iirSampleL * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleL; correction += iirSampleL; iirSampleM = (iirSampleM * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleM; correction += iirSampleM; iirSampleN = (iirSampleN * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleN; correction += iirSampleN; iirSampleO = (iirSampleO * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleO; correction += iirSampleO; iirSampleP = (iirSampleP * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleP; correction += iirSampleP; iirSampleQ = (iirSampleQ * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleQ; correction += iirSampleQ; iirSampleR = (iirSampleR * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleR; correction += iirSampleR; iirSampleS = (iirSampleS * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleS; correction += iirSampleS; iirSampleT = (iirSampleT * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleT; correction += iirSampleT; iirSampleU = (iirSampleU * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleU; correction += iirSampleU; iirSampleV = (iirSampleV * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleV; correction += iirSampleV; iirSampleW = (iirSampleW * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleW; correction += iirSampleW; iirSampleX = (iirSampleX * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleX; correction += iirSampleX; iirSampleY = (iirSampleY * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleY; correction += iirSampleY; iirSampleZ = (iirSampleZ * altHPAmount) + (tempSample * iirHPAmount); tempSample -= iirSampleZ; correction += iirSampleZ; //do the IIR on a dummy sample, and store up the correction in a variable at the same scale as the very low level //numbers being used. Don't keep doing it against the possibly high level signal number. HeadBump -= correction; //apply stored up tiny corrections HeadBump *= (1.0 - (wreck/2)); bridgerectifier = fabs(HeadBump); if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633; //max value for sine function bridgerectifier = sin(bridgerectifier); if (HeadBump > 0.0) HeadBump = bridgerectifier; else HeadBump = -bridgerectifier; //clamp HeadBump to -1 to 1 with distortion inputSample *= (1.0 - wreck); inputSample += (HeadBump * wreck); //begin 32 bit floating point dither int expon; frexpf((float)inputSample, &expon); fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5; inputSample += static_cast(fpd) * 5.960464655174751e-36L * pow(2,expon+62); //end 32 bit floating point dither *destP = inputSample; //built in output trim and dry/wet by default sourceP += inNumChannels; destP += inNumChannels; } }