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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. * */ /*============================================================================= BeziComp.cpp =============================================================================*/ #include "BeziComp.h" //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ COMPONENT_ENTRY(BeziComp) //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // BeziComp::BeziComp //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ BeziComp::BeziComp(AudioUnit component) : AUEffectBase(component) { CreateElements(); Globals()->UseIndexedParameters(kNumberOfParameters); SetParameter(kParam_A, kDefaultValue_ParamA ); SetParameter(kParam_B, kDefaultValue_ParamB ); SetParameter(kParam_C, kDefaultValue_ParamC ); #if AU_DEBUG_DISPATCHER mDebugDispatcher = new AUDebugDispatcher (this); #endif } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // BeziComp::GetParameterValueStrings //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult BeziComp::GetParameterValueStrings(AudioUnitScope inScope, AudioUnitParameterID inParameterID, CFArrayRef * outStrings) { return kAudioUnitErr_InvalidProperty; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // BeziComp::GetParameterInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult BeziComp::GetParameterInfo(AudioUnitScope inScope, AudioUnitParameterID inParameterID, AudioUnitParameterInfo &outParameterInfo ) { ComponentResult result = noErr; outParameterInfo.flags = kAudioUnitParameterFlag_IsWritable | kAudioUnitParameterFlag_IsReadable; if (inScope == kAudioUnitScope_Global) { switch(inParameterID) { case kParam_A: AUBase::FillInParameterName (outParameterInfo, kParameterAName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamA; break; case kParam_B: AUBase::FillInParameterName (outParameterInfo, kParameterBName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamB; break; case kParam_C: AUBase::FillInParameterName (outParameterInfo, kParameterCName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamC; break; default: result = kAudioUnitErr_InvalidParameter; break; } } else { result = kAudioUnitErr_InvalidParameter; } return result; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // BeziComp::GetPropertyInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult BeziComp::GetPropertyInfo (AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, UInt32 & outDataSize, Boolean & outWritable) { return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable); } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // state that plugin supports only stereo-in/stereo-out processing UInt32 BeziComp::SupportedNumChannels(const AUChannelInfo ** outInfo) { if (outInfo != NULL) { static AUChannelInfo info; info.inChannels = 2; info.outChannels = 2; *outInfo = &info; } return 1; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // BeziComp::GetProperty //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult BeziComp::GetProperty( AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, void * outData ) { return AUEffectBase::GetProperty (inID, inScope, inElement, outData); } // BeziComp::Initialize //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult BeziComp::Initialize() { ComponentResult result = AUEffectBase::Initialize(); if (result == noErr) Reset(kAudioUnitScope_Global, 0); return result; } #pragma mark ____BeziCompEffectKernel //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // BeziComp::BeziCompKernel::Reset() //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult BeziComp::Reset(AudioUnitScope inScope, AudioUnitElement inElement) { for (int x = 0; x < bez_total; x++) {bezComp[x] = 0.0;} bezComp[bez_cycle] = 1.0; lastSampleL = 0.0; wasPosClipL = false; wasNegClipL = false; lastSampleR = 0.0; wasPosClipR = false; wasNegClipR = false; for (int x = 0; x < 16; x++) {intermediateL[x] = 0.0; intermediateR[x] = 0.0;} fpdL = 1.0; while (fpdL < 16386) fpdL = rand()*UINT32_MAX; fpdR = 1.0; while (fpdR < 16386) fpdR = rand()*UINT32_MAX; return noErr; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // BeziComp::ProcessBufferLists //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ OSStatus BeziComp::ProcessBufferLists(AudioUnitRenderActionFlags & ioActionFlags, const AudioBufferList & inBuffer, AudioBufferList & outBuffer, UInt32 inFramesToProcess) { Float32 * inputL = (Float32*)(inBuffer.mBuffers[0].mData); Float32 * inputR = (Float32*)(inBuffer.mBuffers[1].mData); Float32 * outputL = (Float32*)(outBuffer.mBuffers[0].mData); Float32 * outputR = (Float32*)(outBuffer.mBuffers[1].mData); UInt32 nSampleFrames = inFramesToProcess; double overallscale = 1.0; overallscale /= 44100.0; overallscale *= GetSampleRate(); int spacing = floor(overallscale); //should give us working basic scaling, usually 2 or 4 if (spacing < 1) spacing = 1; if (spacing > 16) spacing = 16; double bezCThresh = pow(GetParameter( kParam_A ),2.0) * 64.0; double bezMakeUp = sqrt(bezCThresh+1.0); double bezRez = (pow(GetParameter( kParam_B ),6.0)+0.0001)/overallscale; if (bezRez > 1.0) bezRez = 1.0; double wet = GetParameter( kParam_C ); while (nSampleFrames-- > 0) { double inputSampleL = *inputL; double inputSampleR = *inputR; if (fabs(inputSampleL)<1.18e-23) inputSampleL = fpdL * 1.18e-17; if (fabs(inputSampleR)<1.18e-23) inputSampleR = fpdR * 1.18e-17; double drySampleL = inputSampleL; double drySampleR = inputSampleR; bezComp[bez_cycle] += bezRez; bezComp[bez_SampL] += (fmax(fabs(inputSampleL),fabs(inputSampleR)) * bezRez); if (bezComp[bez_cycle] > 1.0) { bezComp[bez_cycle] -= 1.0; bezComp[bez_CL] = bezComp[bez_BL]; bezComp[bez_BL] = bezComp[bez_AL]; bezComp[bez_AL] = bezComp[bez_SampL]; bezComp[bez_SampL] = 0.0; } double CBL = (bezComp[bez_CL]*(1.0-bezComp[bez_cycle]))+(bezComp[bez_BL]*bezComp[bez_cycle]); double BAL = (bezComp[bez_BL]*(1.0-bezComp[bez_cycle]))+(bezComp[bez_AL]*bezComp[bez_cycle]); double CBAL = (bezComp[bez_BL]+(CBL*(1.0-bezComp[bez_cycle]))+(BAL*bezComp[bez_cycle]))*0.5; inputSampleL *= 1.0-(fmin(CBAL*bezCThresh,1.0)); inputSampleL *= bezMakeUp; inputSampleR *= 1.0-(fmin(CBAL*bezCThresh,1.0)); inputSampleR *= bezMakeUp; if (wet < 1.0) { inputSampleL = (inputSampleL * wet) + (drySampleL * (1.0-wet)); inputSampleR = (inputSampleR * wet) + (drySampleR * (1.0-wet)); } //begin ClipOnly2 stereo as a little, compressed chunk that can be dropped into code if (inputSampleL > 4.0) inputSampleL = 4.0; if (inputSampleL < -4.0) inputSampleL = -4.0; if (wasPosClipL == true) { //current will be over if (inputSampleL0.9549925859) {wasPosClipL=true;inputSampleL=0.7058208+(lastSampleL*0.2609148);} if (wasNegClipL == true) { //current will be -over if (inputSampleL > lastSampleL) lastSampleL=-0.7058208+(inputSampleL*0.2609148); else lastSampleL=-0.2491717+(lastSampleL*0.7390851); } wasNegClipL = false; if (inputSampleL<-0.9549925859) {wasNegClipL=true;inputSampleL=-0.7058208+(lastSampleL*0.2609148);} intermediateL[spacing] = inputSampleL; inputSampleL = lastSampleL; //Latency is however many samples equals one 44.1k sample for (int x = spacing; x > 0; x--) intermediateL[x-1] = intermediateL[x]; lastSampleL = intermediateL[0]; //run a little buffer to handle this if (inputSampleR > 4.0) inputSampleR = 4.0; if (inputSampleR < -4.0) inputSampleR = -4.0; if (wasPosClipR == true) { //current will be over if (inputSampleR0.9549925859) {wasPosClipR=true;inputSampleR=0.7058208+(lastSampleR*0.2609148);} if (wasNegClipR == true) { //current will be -over if (inputSampleR > lastSampleR) lastSampleR=-0.7058208+(inputSampleR*0.2609148); else lastSampleR=-0.2491717+(lastSampleR*0.7390851); } wasNegClipR = false; if (inputSampleR<-0.9549925859) {wasNegClipR=true;inputSampleR=-0.7058208+(lastSampleR*0.2609148);} intermediateR[spacing] = inputSampleR; inputSampleR = lastSampleR; //Latency is however many samples equals one 44.1k sample for (int x = spacing; x > 0; x--) intermediateR[x-1] = intermediateR[x]; lastSampleR = intermediateR[0]; //run a little buffer to handle this //end ClipOnly2 stereo as a little, compressed chunk that can be dropped into code //begin 32 bit stereo floating point dither int expon; frexpf((float)inputSampleL, &expon); fpdL ^= fpdL << 13; fpdL ^= fpdL >> 17; fpdL ^= fpdL << 5; inputSampleL += ((double(fpdL)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62)); frexpf((float)inputSampleR, &expon); fpdR ^= fpdR << 13; fpdR ^= fpdR >> 17; fpdR ^= fpdR << 5; inputSampleR += ((double(fpdR)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62)); //end 32 bit stereo floating point dither *outputL = inputSampleL; *outputR = inputSampleR; //direct stereo out inputL += 1; inputR += 1; outputL += 1; outputR += 1; } return noErr; }