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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. * */ /*============================================================================= BitDualPan.cpp =============================================================================*/ #include "BitDualPan.h" //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ COMPONENT_ENTRY(BitDualPan) //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // BitDualPan::BitDualPan //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ BitDualPan::BitDualPan(AudioUnit component) : AUEffectBase(component) { CreateElements(); Globals()->UseIndexedParameters(kNumberOfParameters); SetParameter(kParam_A, kDefaultValue_ParamA ); SetParameter(kParam_B, kDefaultValue_ParamB ); SetParameter(kParam_C, kDefaultValue_ParamC ); SetParameter(kParam_D, kDefaultValue_ParamD ); #if AU_DEBUG_DISPATCHER mDebugDispatcher = new AUDebugDispatcher (this); #endif } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // BitDualPan::GetParameterValueStrings //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult BitDualPan::GetParameterValueStrings(AudioUnitScope inScope, AudioUnitParameterID inParameterID, CFArrayRef * outStrings) { return kAudioUnitErr_InvalidProperty; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // BitDualPan::GetParameterInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult BitDualPan::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; case kParam_D: AUBase::FillInParameterName (outParameterInfo, kParameterDName, false); outParameterInfo.unit = kAudioUnitParameterUnit_Generic; outParameterInfo.minValue = 0.0; outParameterInfo.maxValue = 1.0; outParameterInfo.defaultValue = kDefaultValue_ParamD; break; default: result = kAudioUnitErr_InvalidParameter; break; } } else { result = kAudioUnitErr_InvalidParameter; } return result; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // BitDualPan::GetPropertyInfo //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult BitDualPan::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 BitDualPan::SupportedNumChannels(const AUChannelInfo ** outInfo) { if (outInfo != NULL) { static AUChannelInfo info; info.inChannels = 2; info.outChannels = 2; *outInfo = &info; } return 1; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // BitDualPan::GetProperty //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult BitDualPan::GetProperty( AudioUnitPropertyID inID, AudioUnitScope inScope, AudioUnitElement inElement, void * outData ) { return AUEffectBase::GetProperty (inID, inScope, inElement, outData); } // BitDualPan::Initialize //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult BitDualPan::Initialize() { ComponentResult result = AUEffectBase::Initialize(); if (result == noErr) Reset(kAudioUnitScope_Global, 0); return result; } #pragma mark ____BitDualPanEffectKernel //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // BitDualPan::BitDualPanKernel::Reset() //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ComponentResult BitDualPan::Reset(AudioUnitScope inScope, AudioUnitElement inElement) { return noErr; } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // BitDualPan::ProcessBufferLists //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ OSStatus BitDualPan::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 gainControl = (GetParameter( kParam_A )*0.5)+0.05; //0.0 to 1.0 int gainBits = 20; //start beyond maximum attenuation if (gainControl > 0.0) gainBits = floor(1.0 / gainControl); int bitshiftL = gainBits - 3; int bitshiftR = gainBits - 3; double panControl = (GetParameter( kParam_B )*2.0)-1.0; //-1.0 to 1.0 double panAttenuation = (1.0-fabs(panControl)); int panBits = 20; //start centered if (panAttenuation > 0.0) panBits = floor(1.0 / panAttenuation); if (panControl > 0.25) bitshiftL += panBits; if (panControl < -0.25) bitshiftR += panBits; if (bitshiftL < -2) bitshiftL = -2; if (bitshiftL > 17) bitshiftL = 17; if (bitshiftR < -2) bitshiftR = -2; if (bitshiftR > 17) bitshiftR = 17; double LgainL = 1.0; double LgainR = 1.0; switch (bitshiftL) { case 17: LgainL = 0.0; break; case 16: LgainL = 0.0000152587890625; break; case 15: LgainL = 0.000030517578125; break; case 14: LgainL = 0.00006103515625; break; case 13: LgainL = 0.0001220703125; break; case 12: LgainL = 0.000244140625; break; case 11: LgainL = 0.00048828125; break; case 10: LgainL = 0.0009765625; break; case 9: LgainL = 0.001953125; break; case 8: LgainL = 0.00390625; break; case 7: LgainL = 0.0078125; break; case 6: LgainL = 0.015625; break; case 5: LgainL = 0.03125; break; case 4: LgainL = 0.0625; break; case 3: LgainL = 0.125; break; case 2: LgainL = 0.25; break; case 1: LgainL = 0.5; break; case 0: LgainL = 1.0; break; case -1: LgainL = 2.0; break; case -2: LgainL = 4.0; break; } switch (bitshiftR) { case 17: LgainR = 0.0; break; case 16: LgainR = 0.0000152587890625; break; case 15: LgainR = 0.000030517578125; break; case 14: LgainR = 0.00006103515625; break; case 13: LgainR = 0.0001220703125; break; case 12: LgainR = 0.000244140625; break; case 11: LgainR = 0.00048828125; break; case 10: LgainR = 0.0009765625; break; case 9: LgainR = 0.001953125; break; case 8: LgainR = 0.00390625; break; case 7: LgainR = 0.0078125; break; case 6: LgainR = 0.015625; break; case 5: LgainR = 0.03125; break; case 4: LgainR = 0.0625; break; case 3: LgainR = 0.125; break; case 2: LgainR = 0.25; break; case 1: LgainR = 0.5; break; case 0: LgainR = 1.0; break; case -1: LgainR = 2.0; break; case -2: LgainR = 4.0; break; } gainControl = (GetParameter( kParam_C )*0.5)+0.05; //0.0 to 1.0 gainBits = 20; //start beyond maximum attenuation if (gainControl > 0.0) gainBits = floor(1.0 / gainControl); bitshiftL = gainBits - 3; bitshiftR = gainBits - 3; panControl = (GetParameter( kParam_D )*2.0)-1.0; //-1.0 to 1.0 panAttenuation = (1.0-fabs(panControl)); panBits = 20; //start centered if (panAttenuation > 0.0) panBits = floor(1.0 / panAttenuation); if (panControl > 0.25) bitshiftL += panBits; if (panControl < -0.25) bitshiftR += panBits; if (bitshiftL < -2) bitshiftL = -2; if (bitshiftL > 17) bitshiftL = 17; if (bitshiftR < -2) bitshiftR = -2; if (bitshiftR > 17) bitshiftR = 17; double RgainL = 1.0; double RgainR = 1.0; switch (bitshiftL) { case 17: RgainL = 0.0; break; case 16: RgainL = 0.0000152587890625; break; case 15: RgainL = 0.000030517578125; break; case 14: RgainL = 0.00006103515625; break; case 13: RgainL = 0.0001220703125; break; case 12: RgainL = 0.000244140625; break; case 11: RgainL = 0.00048828125; break; case 10: RgainL = 0.0009765625; break; case 9: RgainL = 0.001953125; break; case 8: RgainL = 0.00390625; break; case 7: RgainL = 0.0078125; break; case 6: RgainL = 0.015625; break; case 5: RgainL = 0.03125; break; case 4: RgainL = 0.0625; break; case 3: RgainL = 0.125; break; case 2: RgainL = 0.25; break; case 1: RgainL = 0.5; break; case 0: RgainL = 1.0; break; case -1: RgainL = 2.0; break; case -2: RgainL = 4.0; break; } switch (bitshiftR) { case 17: RgainR = 0.0; break; case 16: RgainR = 0.0000152587890625; break; case 15: RgainR = 0.000030517578125; break; case 14: RgainR = 0.00006103515625; break; case 13: RgainR = 0.0001220703125; break; case 12: RgainR = 0.000244140625; break; case 11: RgainR = 0.00048828125; break; case 10: RgainR = 0.0009765625; break; case 9: RgainR = 0.001953125; break; case 8: RgainR = 0.00390625; break; case 7: RgainR = 0.0078125; break; case 6: RgainR = 0.015625; break; case 5: RgainR = 0.03125; break; case 4: RgainR = 0.0625; break; case 3: RgainR = 0.125; break; case 2: RgainR = 0.25; break; case 1: RgainR = 0.5; break; case 0: RgainR = 1.0; break; case -1: RgainR = 2.0; break; case -2: RgainR = 4.0; break; } while (nSampleFrames-- > 0) { double monoL = *inputL; double monoR = *inputR; *outputL = (monoL*LgainL)+(monoR*RgainL); *outputR = (monoL*LgainR)+(monoR*RgainR); inputL += 1; inputR += 1; outputL += 1; outputR += 1; } return noErr; }