/* * File: Ditherbox.cpp * * Version: 1.0 * * Created: 1/1/09 * * Copyright: Copyright © 2009 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. * */ /*============================================================================= Ditherbox.h =============================================================================*/ #include "Ditherbox.h" //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ COMPONENT_ENTRY(Ditherbox) //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Ditherbox::Ditherbox //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Ditherbox::Ditherbox(AudioUnit component) : AUEffectBase(component) { CreateElements(); Globals()->UseIndexedParameters(kNumberOfParameters); SetParameter(kParam_One, kDefaultValue_ParamOne ); #if AU_DEBUG_DISPATCHER mDebugDispatcher = new AUDebugDispatcher (this); #endif } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Ditherbox::GetParameterValueStrings //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Ditherbox::GetParameterValueStrings(AudioUnitScope inScope, AudioUnitParameterID inParameterID, CFArrayRef * outStrings) { if ((inScope == kAudioUnitScope_Global) && (inParameterID == kParam_One)) //ID must be actual name of parameter identifier, not number { if (outStrings == NULL) return noErr; CFStringRef strings [] = { kMenuItem_Truncate, kMenuItem_Flat, kMenuItem_TPDF, kMenuItem_Paul, kMenuItem_DoublePaul, kMenuItem_Tape, kMenuItem_Quadratic, kMenuItem_TenNines, kMenuItem_Contingent, kMenuItem_Naturalize, kMenuItem_NJAD, kMenuItem_TruncateHR, kMenuItem_FlatHR, kMenuItem_TPDFHR, kMenuItem_PaulHR, kMenuItem_DoublePaulHR, kMenuItem_TapeHR, kMenuItem_QuadraticHR, kMenuItem_TenNinesHR, kMenuItem_ContingentHR, kMenuItem_NaturalizeHR, kMenuItem_NJADHR, kMenuItem_SlewOnly, kMenuItem_SubsOnly, kMenuItem_Silhouette, }; *outStrings = CFArrayCreate ( NULL, (const void **) strings, (sizeof (strings) / sizeof (strings [0])), NULL ); return noErr; } return kAudioUnitErr_InvalidProperty; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Ditherbox::GetParameterInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Ditherbox::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_Indexed; outParameterInfo.minValue = kTruncate; outParameterInfo.maxValue = kSilhouette; outParameterInfo.defaultValue = kDefaultValue_ParamOne; break; default: result = kAudioUnitErr_InvalidParameter; break; } } else { result = kAudioUnitErr_InvalidParameter; } return result; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Ditherbox::GetPropertyInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Ditherbox::GetPropertyInfo (AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, UInt32 & outDataSize, Boolean & outWritable) { return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable); } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Ditherbox::GetProperty //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Ditherbox::GetProperty( AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, void * outData ) { return AUEffectBase::GetProperty (inID, inScope, inElement, outData); } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Ditherbox::Initialize //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult Ditherbox::Initialize() { ComponentResult result = AUEffectBase::Initialize(); if (result == noErr) Reset(kAudioUnitScope_Global, 0); return result; } #pragma mark ____DitherboxEffectKernel //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Ditherbox::DitherboxKernel::Reset() //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ void Ditherbox::DitherboxKernel::Reset() { Position = 99999999; contingentErr = 0.0; byn[0] = 1000; byn[1] = 301; byn[2] = 176; byn[3] = 125; byn[4] = 97; byn[5] = 79; byn[6] = 67; byn[7] = 58; byn[8] = 51; byn[9] = 46; byn[10] = 1000; noiseShaping = 0.0; NSOdd = 0.0; NSEven = 0.0; prev = 0.0; ns[0] = 0; ns[1] = 0; ns[2] = 0; ns[3] = 0; ns[4] = 0; ns[5] = 0; ns[6] = 0; ns[7] = 0; ns[8] = 0; ns[9] = 0; ns[10] = 0; ns[11] = 0; ns[12] = 0; ns[13] = 0; ns[14] = 0; ns[15] = 0; lastSample = 0.0; outSample = 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; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Ditherbox::DitherboxKernel::Process //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ void Ditherbox::DitherboxKernel::Process( const Float32 *inSourceP, Float32 *inDestP, UInt32 inFramesToProcess, UInt32 inNumChannels, // for version 2 AudioUnits inNumChannels is always 1 bool &ioSilence ) { UInt32 nSampleFrames = inFramesToProcess; const Float32 *sourceP = inSourceP; Float32 *destP = inDestP; long double contingentRnd; long double absSample; long double contingent; long double overallscale = 1.0; overallscale /= 44100.0; overallscale *= GetSampleRate(); long double iirAmount = 2250/44100.0; long double gaintarget = 1.42; long double gain; iirAmount /= overallscale; long double altAmount = 1.0 - iirAmount; long double inputSample; long double outputSample; long double silhouette; long double smoother; long double bridgerectifier; long double benfordize; int hotbinA; int hotbinB; long double totalA; long double totalB; long double randyConstant = 1.61803398874989484820458683436563811772030917980576; long double omegaConstant = 0.56714329040978387299996866221035554975381578718651; long double expConstant = 0.06598803584531253707679018759684642493857704825279; long double trim = 2.302585092994045684017991; //natural logarithm of 10 int dtype = (int) GetParameter( kParam_One ); // +1 for Reaper bug workaround bool highRes = false; bool dithering = true; Float32 drySample; //should be the same as what the native DAW buss is if (dtype > 11){highRes = true; dtype -= 11;} if (dtype > 11){dithering = false; highRes = false;} //follow up by switching high res back off for the monitoring while (nSampleFrames-- > 0) { inputSample = *sourceP; if (inputSample<1.2e-38 && -inputSample<1.2e-38) { static int noisesource = 0; //this declares a variable before anything else is compiled. It won't keep assigning //it to 0 for every sample, it's as if the declaration doesn't exist in this context, //but it lets me add this denormalization fix in a single place rather than updating //it in three different locations. The variable isn't thread-safe but this is only //a random seed and we can share it with whatever. noisesource = noisesource % 1700021; noisesource++; int 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; double applyresidue = residue; applyresidue *= 0.00000001; applyresidue *= 0.00000001; inputSample = applyresidue; //this denormalization routine produces a white noise at -300 dB which the noise //shaping will interact with to produce a bipolar output, but the noise is actually //all positive. That should stop any variables from going denormal, and the routine //only kicks in if digital black is input. As a final touch, if you save to 24-bit //the silence will return to being digital black again. } drySample = inputSample; sourceP += inNumChannels; if (dtype == 8) inputSample -= noiseShaping; if (dithering) inputSample *= 32768.0; //denormalizing as way of controlling insane detail boosting if (highRes) inputSample *= 256.0; //256 for 16/24 version switch (dtype) { case 1: inputSample = floor(inputSample); //truncate break; case 2: inputSample += (rand()/(double)RAND_MAX); inputSample -= 0.5; inputSample = floor(inputSample); //flat dither break; case 3: inputSample += (rand()/(double)RAND_MAX); inputSample += (rand()/(double)RAND_MAX); inputSample -= 1.0; inputSample = floor(inputSample); //TPDF dither break; case 4: currentDither = (rand()/(double)RAND_MAX); inputSample += currentDither; inputSample -= lastSample; inputSample = floor(inputSample); lastSample = currentDither; //Paul dither break; case 5: ns[9] = ns[8]; ns[8] = ns[7]; ns[7] = ns[6]; ns[6] = ns[5]; ns[5] = ns[4]; ns[4] = ns[3]; ns[3] = ns[2]; ns[2] = ns[1]; ns[1] = ns[0]; ns[0] = (rand()/(double)RAND_MAX); currentDither = (ns[0] * 0.061); currentDither -= (ns[1] * 0.11); currentDither += (ns[8] * 0.126); currentDither -= (ns[7] * 0.23); currentDither += (ns[2] * 0.25); currentDither -= (ns[3] * 0.43); currentDither += (ns[6] * 0.5); currentDither -= ns[5]; currentDither += ns[4]; //this sounds different from doing it in order of sample position //cumulative tiny errors seem to build up even at this buss depth //considerably more pronounced at 32 bit float. //Therefore we add the most significant components LAST. //trying to keep values on like exponents of the floating point value. inputSample += currentDither; inputSample = floor(inputSample); //DoublePaul dither break; case 6: currentDither = (rand()/(double)RAND_MAX); inputSample += currentDither; inputSample -= ns[4]; inputSample = floor(inputSample); ns[4] = ns[3]; ns[3] = ns[2]; ns[2] = ns[1]; ns[1] = currentDither; //Tape dither break; case 7: Position += 1; //Note- uses integer overflow as a 'mod' operator hotbinA = Position * Position; hotbinA = hotbinA % 170003; //% is C++ mod operator hotbinA *= hotbinA; hotbinA = hotbinA % 17011; //% is C++ mod operator hotbinA *= hotbinA; hotbinA = hotbinA % 1709; //% is C++ mod operator hotbinA *= hotbinA; hotbinA = hotbinA % 173; //% is C++ mod operator hotbinA *= hotbinA; hotbinA = hotbinA % 17; hotbinA *= 0.0635; if (flip) hotbinA = -hotbinA; inputSample += hotbinA; inputSample = floor(inputSample); //Quadratic dither break; case 8: absSample = ((rand()/(double)RAND_MAX) - 0.5); ns[0] += absSample; ns[0] /= 2; absSample -= ns[0]; absSample += ((rand()/(double)RAND_MAX) - 0.5); ns[1] += absSample; ns[1] /= 2; absSample -= ns[1]; absSample += ((rand()/(double)RAND_MAX) - 0.5); ns[2] += absSample; ns[2] /= 2; absSample -= ns[2]; absSample += ((rand()/(double)RAND_MAX) - 0.5); ns[3] += absSample; ns[3] /= 2; absSample -= ns[3]; absSample += ((rand()/(double)RAND_MAX) - 0.5); ns[4] += absSample; ns[4] /= 2; absSample -= ns[4]; absSample += ((rand()/(double)RAND_MAX) - 0.5); ns[5] += absSample; ns[5] /= 2; absSample -= ns[5]; absSample += ((rand()/(double)RAND_MAX) - 0.5); ns[6] += absSample; ns[6] /= 2; absSample -= ns[6]; absSample += ((rand()/(double)RAND_MAX) - 0.5); ns[7] += absSample; ns[7] /= 2; absSample -= ns[7]; absSample += ((rand()/(double)RAND_MAX) - 0.5); ns[8] += absSample; ns[8] /= 2; absSample -= ns[8]; absSample += ((rand()/(double)RAND_MAX) - 0.5); ns[9] += absSample; ns[9] /= 2; absSample -= ns[9]; absSample += ((rand()/(double)RAND_MAX) - 0.5); ns[10] += absSample; ns[10] /= 2; absSample -= ns[10]; absSample += ((rand()/(double)RAND_MAX) - 0.5); ns[11] += absSample; ns[11] /= 2; absSample -= ns[11]; absSample += ((rand()/(double)RAND_MAX) - 0.5); ns[12] += absSample; ns[12] /= 2; absSample -= ns[12]; absSample += ((rand()/(double)RAND_MAX) - 0.5); ns[13] += absSample; ns[13] /= 2; absSample -= ns[13]; absSample += ((rand()/(double)RAND_MAX) - 0.5); ns[14] += absSample; ns[14] /= 2; absSample -= ns[14]; absSample += ((rand()/(double)RAND_MAX) - 0.5); ns[15] += absSample; ns[15] /= 2; absSample -= ns[15]; //install noise and then shape it absSample += inputSample; //NSOdd /= 1.0001; //NSDensity if (NSOdd > 0) NSOdd -= 0.97; if (NSOdd < 0) NSOdd += 0.97; NSOdd -= (NSOdd * NSOdd * NSOdd * 0.475); NSOdd += prev; absSample += (NSOdd*0.475); prev = floor(absSample) - inputSample; inputSample = floor(absSample); //TenNines dither break; case 9: if (inputSample > 0) inputSample += 0.383; if (inputSample < 0) inputSample -= 0.383; //adjusting to permit more information drug outta the noisefloor contingentRnd = (((rand()/(double)RAND_MAX)+(rand()/(double)RAND_MAX))-1.0) * randyConstant; //produce TPDF dist, scale contingentRnd -= contingentErr*omegaConstant; //include err absSample = fabs(inputSample); contingentErr = absSample - floor(absSample); //get next err contingent = contingentErr * 2.0; //scale of quantization levels if (contingent > 1.0) contingent = ((-contingent+2.0)*omegaConstant) + expConstant; else contingent = (contingent * omegaConstant) + expConstant; //zero is next to a quantization level, one is exactly between them if (flip) contingentRnd = (contingentRnd * (1.0-contingent)) + contingent + 0.5; else contingentRnd = (contingentRnd * (1.0-contingent)) - contingent + 0.5; inputSample += (contingentRnd * contingent); //Contingent Dither inputSample = floor(inputSample); //note: this does not dither for values exactly the same as 16 bit values- //which forces the dither to gate at 0.0. It goes to digital black, //and does a teeny parallel-compression thing when almost at digital black. break; case 10: if (inputSample > 0) inputSample += (0.3333333333); if (inputSample < 0) inputSample -= (0.3333333333); inputSample += (rand()/(double)RAND_MAX)*0.6666666666; benfordize = floor(inputSample); while (benfordize >= 1.0) {benfordize /= 10;} if (benfordize < 1.0) {benfordize *= 10;} if (benfordize < 1.0) {benfordize *= 10;} hotbinA = floor(benfordize); //hotbin becomes the Benford bin value for this number floored totalA = 0; if ((hotbinA > 0) && (hotbinA < 10)) { byn[hotbinA] += 1; totalA += (301-byn[1]); totalA += (176-byn[2]); totalA += (125-byn[3]); totalA += (97-byn[4]); totalA += (79-byn[5]); totalA += (67-byn[6]); totalA += (58-byn[7]); totalA += (51-byn[8]); totalA += (46-byn[9]); byn[hotbinA] -= 1; } else {hotbinA = 10;} //produce total number- smaller is closer to Benford real benfordize = ceil(inputSample); while (benfordize >= 1.0) {benfordize /= 10;} if (benfordize < 1.0) {benfordize *= 10;} if (benfordize < 1.0) {benfordize *= 10;} hotbinB = floor(benfordize); //hotbin becomes the Benford bin value for this number ceiled totalB = 0; if ((hotbinB > 0) && (hotbinB < 10)) { byn[hotbinB] += 1; totalB += (301-byn[1]); totalB += (176-byn[2]); totalB += (125-byn[3]); totalB += (97-byn[4]); totalB += (79-byn[5]); totalB += (67-byn[6]); totalB += (58-byn[7]); totalB += (51-byn[8]); totalB += (46-byn[9]); byn[hotbinB] -= 1; } else {hotbinB = 10;} //produce total number- smaller is closer to Benford real if (totalA < totalB) { byn[hotbinA] += 1; inputSample = floor(inputSample); } else { byn[hotbinB] += 1; inputSample = ceil(inputSample); } //assign the relevant one to the delay line //and floor/ceil signal accordingly totalA = byn[1] + byn[2] + byn[3] + byn[4] + byn[5] + byn[6] + byn[7] + byn[8] + byn[9]; totalA /= 1000; if (totalA = 0) totalA = 1; byn[1] /= totalA; byn[2] /= totalA; byn[3] /= totalA; byn[4] /= totalA; byn[5] /= totalA; byn[6] /= totalA; byn[7] /= totalA; byn[8] /= totalA; byn[9] /= totalA; byn[10] /= 2; //catchall for garbage data break; case 11: //this one is the Not Just Another Dither benfordize = floor(inputSample); while (benfordize >= 1.0) {benfordize /= 10;} if (benfordize < 1.0) {benfordize *= 10;} if (benfordize < 1.0) {benfordize *= 10;} if (benfordize < 1.0) {benfordize *= 10;} if (benfordize < 1.0) {benfordize *= 10;} if (benfordize < 1.0) {benfordize *= 10;} hotbinA = floor(benfordize); //hotbin becomes the Benford bin value for this number floored totalA = 0; if ((hotbinA > 0) && (hotbinA < 10)) { byn[hotbinA] += 1; totalA += (301-byn[1]); totalA += (176-byn[2]); totalA += (125-byn[3]); totalA += (97-byn[4]); totalA += (79-byn[5]); totalA += (67-byn[6]); totalA += (58-byn[7]); totalA += (51-byn[8]); totalA += (46-byn[9]); byn[hotbinA] -= 1; } else {hotbinA = 10;} //produce total number- smaller is closer to Benford real benfordize = ceil(inputSample); while (benfordize >= 1.0) {benfordize /= 10;} if (benfordize < 1.0) {benfordize *= 10;} if (benfordize < 1.0) {benfordize *= 10;} if (benfordize < 1.0) {benfordize *= 10;} if (benfordize < 1.0) {benfordize *= 10;} if (benfordize < 1.0) {benfordize *= 10;} hotbinB = floor(benfordize); //hotbin becomes the Benford bin value for this number ceiled totalB = 0; if ((hotbinB > 0) && (hotbinB < 10)) { byn[hotbinB] += 1; totalB += (301-byn[1]); totalB += (176-byn[2]); totalB += (125-byn[3]); totalB += (97-byn[4]); totalB += (79-byn[5]); totalB += (67-byn[6]); totalB += (58-byn[7]); totalB += (51-byn[8]); totalB += (46-byn[9]); byn[hotbinB] -= 1; } else {hotbinB = 10;} //produce total number- smaller is closer to Benford real if (totalA < totalB) { byn[hotbinA] += 1; inputSample = floor(inputSample); } else { byn[hotbinB] += 1; inputSample = ceil(inputSample); } //assign the relevant one to the delay line //and floor/ceil signal accordingly totalA = byn[1] + byn[2] + byn[3] + byn[4] + byn[5] + byn[6] + byn[7] + byn[8] + byn[9]; totalA /= 1000; if (totalA = 0) totalA = 1; byn[1] /= totalA; byn[2] /= totalA; byn[3] /= totalA; byn[4] /= totalA; byn[5] /= totalA; byn[6] /= totalA; byn[7] /= totalA; byn[8] /= totalA; byn[9] /= totalA; byn[10] /= 2; //catchall for garbage data break; case 12: //slew only outputSample = (inputSample - lastSample)*trim; lastSample = inputSample; if (outputSample > 1.0) outputSample = 1.0; if (outputSample < -1.0) outputSample = -1.0; inputSample = outputSample; break; case 13: //subs only gain = gaintarget; inputSample *= gain; gain = ((gain-1)*0.75)+1; iirSampleA = (iirSampleA * altAmount) + (inputSample * iirAmount); inputSample = iirSampleA; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleB = (iirSampleB * altAmount) + (inputSample * iirAmount); inputSample = iirSampleB; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleC = (iirSampleC * altAmount) + (inputSample * iirAmount); inputSample = iirSampleC; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleD = (iirSampleD * altAmount) + (inputSample * iirAmount); inputSample = iirSampleD; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleE = (iirSampleE * altAmount) + (inputSample * iirAmount); inputSample = iirSampleE; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleF = (iirSampleF * altAmount) + (inputSample * iirAmount); inputSample = iirSampleF; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleG = (iirSampleG * altAmount) + (inputSample * iirAmount); inputSample = iirSampleG; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleH = (iirSampleH * altAmount) + (inputSample * iirAmount); inputSample = iirSampleH; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleI = (iirSampleI * altAmount) + (inputSample * iirAmount); inputSample = iirSampleI; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleJ = (iirSampleJ * altAmount) + (inputSample * iirAmount); inputSample = iirSampleJ; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleK = (iirSampleK * altAmount) + (inputSample * iirAmount); inputSample = iirSampleK; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleL = (iirSampleL * altAmount) + (inputSample * iirAmount); inputSample = iirSampleL; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleM = (iirSampleM * altAmount) + (inputSample * iirAmount); inputSample = iirSampleM; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleN = (iirSampleN * altAmount) + (inputSample * iirAmount); inputSample = iirSampleN; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleO = (iirSampleO * altAmount) + (inputSample * iirAmount); inputSample = iirSampleO; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleP = (iirSampleP * altAmount) + (inputSample * iirAmount); inputSample = iirSampleP; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleQ = (iirSampleQ * altAmount) + (inputSample * iirAmount); inputSample = iirSampleQ; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleR = (iirSampleR * altAmount) + (inputSample * iirAmount); inputSample = iirSampleR; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleS = (iirSampleS * altAmount) + (inputSample * iirAmount); inputSample = iirSampleS; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleT = (iirSampleT * altAmount) + (inputSample * iirAmount); inputSample = iirSampleT; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleU = (iirSampleU * altAmount) + (inputSample * iirAmount); inputSample = iirSampleU; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleV = (iirSampleV * altAmount) + (inputSample * iirAmount); inputSample = iirSampleV; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleW = (iirSampleW * altAmount) + (inputSample * iirAmount); inputSample = iirSampleW; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleX = (iirSampleX * altAmount) + (inputSample * iirAmount); inputSample = iirSampleX; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleY = (iirSampleY * altAmount) + (inputSample * iirAmount); inputSample = iirSampleY; inputSample *= gain; gain = ((gain-1)*0.75)+1; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; iirSampleZ = (iirSampleZ * altAmount) + (inputSample * iirAmount); inputSample = iirSampleZ; if (inputSample > 1.0) inputSample = 1.0; if (inputSample < -1.0) inputSample = -1.0; break; case 14: //silhouette bridgerectifier = fabs(inputSample)*1.57079633; if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633; bridgerectifier = 1.0-cos(bridgerectifier); if (inputSample > 0.0) inputSample = bridgerectifier; else inputSample = -bridgerectifier; silhouette = rand()/(double)RAND_MAX; silhouette -= 0.5; silhouette *= 2.0; silhouette *= fabs(inputSample); smoother = rand()/(double)RAND_MAX; smoother -= 0.5; smoother *= 2.0; smoother *= fabs(lastSample); lastSample = inputSample; silhouette += smoother; bridgerectifier = fabs(silhouette)*1.57079633; if (bridgerectifier > 1.57079633) bridgerectifier = 1.57079633; bridgerectifier = sin(bridgerectifier); if (silhouette > 0.0) silhouette = bridgerectifier; else silhouette = -bridgerectifier; inputSample = (silhouette + outSample) / 2.0; outSample = silhouette; break; } flip = !flip; //several dithers use this if (highRes) inputSample /= 256.0; //256 for 16/24 version if (dithering) inputSample /= 32768.0; if (dtype == 8) noiseShaping += inputSample - drySample; *destP = inputSample; destP += inNumChannels; } }