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Diffstat (limited to 'libs/appleutility/CoreAudio/AudioUnits/AUPublic/OtherBases/AUPannerBase.cpp')
| -rw-r--r-- | libs/appleutility/CoreAudio/AudioUnits/AUPublic/OtherBases/AUPannerBase.cpp | 706 |
1 files changed, 706 insertions, 0 deletions
diff --git a/libs/appleutility/CoreAudio/AudioUnits/AUPublic/OtherBases/AUPannerBase.cpp b/libs/appleutility/CoreAudio/AudioUnits/AUPublic/OtherBases/AUPannerBase.cpp new file mode 100644 index 0000000000..f1e2f248ab --- /dev/null +++ b/libs/appleutility/CoreAudio/AudioUnits/AUPublic/OtherBases/AUPannerBase.cpp @@ -0,0 +1,706 @@ +/* + File: AUPannerBase.cpp + Abstract: AUPannerBase.h + Version: 1.1 + + Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple + 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 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. + + Copyright (C) 2014 Apple Inc. All Rights Reserved. + +*/ +#include "AUPannerBase.h" +#include "CABundleLocker.h" +#include <AudioToolbox/AudioToolbox.h> +#include <Accelerate/Accelerate.h> + +static bool sLocalized = false; + +static CFStringRef kPanner_Azimuth_Name = CFSTR("azimuth"); +static CFStringRef kPanner_Elevation_Name = CFSTR("elevation"); +static CFStringRef kPanner_Distance_Name = CFSTR("distance"); + +static CFStringRef kPanner_CoordScale_Name = CFSTR("coordinate scale"); +static CFStringRef kPanner_RefDistance_Name = CFSTR("reference distance"); +static CFStringRef kPanner_Gain_Name = CFSTR("gain"); + +static Float32 kPannerParamDefault_Azimuth = 0.; +static Float32 kPannerParamDefault_Elevation = 0.; +static Float32 kPannerParamDefault_Distance = 1.; + +static Float32 kPannerParamDefault_CoordScale = 10.; +static Float32 kPannerParamDefault_RefDistance = 1.; +static Float32 kPannerParamDefault_Gain = 1.; + +//_____________________________________________________________________________ +// +AUPannerBase::AUPannerBase(AudioComponentInstance inAudioUnit) + : AUBase(inAudioUnit, 1, 1), mBypassEffect(false) +{ + { + CABundleLocker lock; + if (!sLocalized) + { + CFBundleRef bundle = CFBundleGetBundleWithIdentifier( CFSTR("com.apple.audio.units.Components") ); + if (bundle != NULL) + { + kPanner_Azimuth_Name = CFCopyLocalizedStringFromTableInBundle(kPanner_Azimuth_Name, CFSTR("AudioUnits"), bundle, CFSTR("")); + kPanner_Elevation_Name = CFCopyLocalizedStringFromTableInBundle(kPanner_Elevation_Name, CFSTR("AudioUnits"), bundle, CFSTR("")); + kPanner_Distance_Name = CFCopyLocalizedStringFromTableInBundle(kPanner_Distance_Name, CFSTR("AudioUnits"), bundle, CFSTR("")); + + kPanner_CoordScale_Name = CFCopyLocalizedStringFromTableInBundle(kPanner_CoordScale_Name, CFSTR("AudioUnits"), bundle, CFSTR("")); + kPanner_RefDistance_Name = CFCopyLocalizedStringFromTableInBundle(kPanner_RefDistance_Name, CFSTR("AudioUnits"), bundle, CFSTR("")); + kPanner_Gain_Name = CFCopyLocalizedStringFromTableInBundle(kPanner_Gain_Name, CFSTR("AudioUnits"), bundle, CFSTR("")); + + } + + sLocalized = true; + } + } + + CreateElements(); + + SetParameter(kPannerParam_Azimuth, kPannerParamDefault_Azimuth); + SetParameter(kPannerParam_Elevation, kPannerParamDefault_Elevation); + SetParameter(kPannerParam_Distance, kPannerParamDefault_Distance); + + SetParameter(kPannerParam_CoordScale, kPannerParamDefault_CoordScale); + SetParameter(kPannerParam_RefDistance, kPannerParamDefault_RefDistance); + SetParameter(kPannerParam_Gain, kPannerParamDefault_Gain); +} + +//_____________________________________________________________________________ +// +AUPannerBase::~AUPannerBase() +{ + Cleanup(); +} + +//_____________________________________________________________________________ +// +/*! @method Initialize */ +OSStatus AUPannerBase::Initialize() +{ + OSStatus err = noErr; + AllocBypassMatrix(); + err = UpdateBypassMatrix(); + return err; +} + +//_____________________________________________________________________________ +// +/*! @method AllocBypassMatrix */ +void AUPannerBase::AllocBypassMatrix() +{ + UInt32 inChannels = GetNumberOfInputChannels(); + UInt32 outChannels = GetNumberOfOutputChannels(); + mBypassMatrix.alloc(inChannels * outChannels, true); +} + +static AudioChannelLayoutTag DefaultTagForNumberOfChannels(UInt32 inNumberChannels) +{ + switch (inNumberChannels) { + case 1: return kAudioChannelLayoutTag_Mono; + case 2: return kAudioChannelLayoutTag_Stereo; + case 4: return kAudioChannelLayoutTag_Quadraphonic; + case 5: return kAudioChannelLayoutTag_AudioUnit_5_0; + case 6: return kAudioChannelLayoutTag_AudioUnit_6_0; + case 7: return kAudioChannelLayoutTag_AudioUnit_7_0; + case 8: return kAudioChannelLayoutTag_AudioUnit_8; + + default: return 0xFFFF0000 | inNumberChannels; + } +} + +//_____________________________________________________________________________ +// +/*! @method UpdateBypassMatrix */ +OSStatus AUPannerBase::SetDefaultChannelLayoutsIfNone() +{ + OSStatus err = noErr; + + // if layout has not been set, then guess layout from number of channels + UInt32 inChannels = GetNumberOfInputChannels(); + AudioChannelLayout inputLayoutSubstitute; + const AudioChannelLayout* inputLayout = &GetInputLayout(); + if (inputLayout == NULL || inputLayout->mChannelLayoutTag == 0) { + inputLayout = &inputLayoutSubstitute; + inputLayoutSubstitute.mNumberChannelDescriptions = 0; + inputLayoutSubstitute.mChannelBitmap = 0; + inputLayoutSubstitute.mChannelLayoutTag = DefaultTagForNumberOfChannels(inChannels); + + mInputLayout = &inputLayoutSubstitute; + err = SetAudioChannelLayout(kAudioUnitScope_Input, 0, &GetInputLayout()); + if (err) return err; + } + + // if layout has not been set, then guess layout from number of channels + UInt32 outChannels = GetNumberOfOutputChannels(); + AudioChannelLayout outputLayoutSubstitute; + const AudioChannelLayout* outputLayout = &GetOutputLayout(); + if (outputLayout == NULL || outputLayout->mChannelLayoutTag == 0) { + outputLayout = &outputLayoutSubstitute; + outputLayoutSubstitute.mNumberChannelDescriptions = 0; + outputLayoutSubstitute.mChannelBitmap = 0; + outputLayoutSubstitute.mChannelLayoutTag = DefaultTagForNumberOfChannels(outChannels); + + mOutputLayout = &outputLayoutSubstitute; + err = SetAudioChannelLayout(kAudioUnitScope_Output, 0, &GetOutputLayout()); + if (err) return err; + } + + return err; +} + + + +OSStatus AUPannerBase::UpdateBypassMatrix() +{ + OSStatus err = SetDefaultChannelLayoutsIfNone(); + if (err) return err; + + UInt32 inChannels = GetNumberOfInputChannels(); + UInt32 outChannels = GetNumberOfOutputChannels(); + + const AudioChannelLayout* inoutACL[2]; + + inoutACL[0] = &GetInputLayout(); + inoutACL[1] = &GetOutputLayout(); + + mBypassMatrix.alloc(inChannels * outChannels, true); + + UInt32 propSize = inChannels * outChannels * sizeof(Float32); + + err = AudioFormatGetProperty(kAudioFormatProperty_MatrixMixMap, sizeof(inoutACL), inoutACL, &propSize, mBypassMatrix()); + if (err) { + // if there is an error, use a diagonal matrix. + Float32* bypass = mBypassMatrix(); + for (UInt32 chan = 0; chan < std::min(inChannels, outChannels); ++chan) + { + float *amp = bypass + (chan * outChannels + chan); + *amp = 1.; + } + } + + return noErr; +} + +//_____________________________________________________________________________ +// +/*! @method Cleanup */ +void AUPannerBase::Cleanup() +{ + +} + + +//_____________________________________________________________________________ +// +/*! @method Reset */ +OSStatus AUPannerBase::Reset( AudioUnitScope inScope, + AudioUnitElement inElement) +{ + return AUBase::Reset(inScope, inElement); +} + +//_____________________________________________________________________________ +// +/*! @method GetParameterInfo */ +OSStatus AUPannerBase::GetParameterInfo( AudioUnitScope inScope, + AudioUnitParameterID inParameterID, + AudioUnitParameterInfo &outParameterInfo ) +{ + OSStatus result = noErr; + + outParameterInfo.flags = kAudioUnitParameterFlag_IsWritable + + kAudioUnitParameterFlag_IsReadable; + + if (inScope == kAudioUnitScope_Global) { + + switch(inParameterID) + { + case kPannerParam_Azimuth: + AUBase::FillInParameterName (outParameterInfo, kPanner_Azimuth_Name, false); + outParameterInfo.unit = kAudioUnitParameterUnit_Degrees; + outParameterInfo.minValue = -180.; + outParameterInfo.maxValue = 180; + outParameterInfo.defaultValue = kPannerParamDefault_Azimuth; + break; + + case kPannerParam_Elevation: + AUBase::FillInParameterName (outParameterInfo, kPanner_Elevation_Name, false); + outParameterInfo.unit = kAudioUnitParameterUnit_Degrees; + outParameterInfo.minValue = -90.; + outParameterInfo.maxValue = 90; + outParameterInfo.defaultValue = kPannerParamDefault_Elevation; + break; + + case kPannerParam_Distance: + AUBase::FillInParameterName (outParameterInfo, kPanner_Distance_Name, false); + outParameterInfo.unit = kAudioUnitParameterUnit_Generic; + outParameterInfo.minValue = 0.0; + outParameterInfo.maxValue = 1.; + outParameterInfo.defaultValue = kPannerParamDefault_Distance; + outParameterInfo.flags += kAudioUnitParameterFlag_IsHighResolution; + //outParameterInfo.flags += kAudioUnitParameterFlag_DisplayLogarithmic; + break; + + case kPannerParam_CoordScale: + AUBase::FillInParameterName (outParameterInfo, kPanner_CoordScale_Name, false); + outParameterInfo.unit = kAudioUnitParameterUnit_Meters; + outParameterInfo.minValue = 0.01; + outParameterInfo.maxValue = 1000.; + outParameterInfo.defaultValue = kPannerParamDefault_CoordScale; + outParameterInfo.flags += kAudioUnitParameterFlag_DisplayLogarithmic; + break; + + case kPannerParam_RefDistance: + AUBase::FillInParameterName (outParameterInfo, kPanner_RefDistance_Name, false); + outParameterInfo.unit = kAudioUnitParameterUnit_Meters; + outParameterInfo.minValue = 0.01; + outParameterInfo.maxValue = 1000.; + outParameterInfo.defaultValue = kPannerParamDefault_RefDistance; + outParameterInfo.flags += kAudioUnitParameterFlag_DisplayLogarithmic; + break; + + case kPannerParam_Gain: + AUBase::FillInParameterName (outParameterInfo, kPanner_Gain_Name, false); + outParameterInfo.unit = kAudioUnitParameterUnit_Generic; + outParameterInfo.minValue = 0.; + outParameterInfo.maxValue = 1.; + outParameterInfo.defaultValue = kPannerParamDefault_Gain; + break; + + default: + result = kAudioUnitErr_InvalidParameter; + break; + } + } else { + result = kAudioUnitErr_InvalidParameter; + } + + return result; +} + +//_____________________________________________________________________________ +// +OSStatus AUPannerBase::GetParameter( AudioUnitParameterID inParamID, + AudioUnitScope inScope, + AudioUnitElement inElement, + Float32 & outValue) +{ + if (inScope != kAudioUnitScope_Global) + return kAudioUnitErr_InvalidScope; + + outValue = Globals()->GetParameter(inParamID); + + return noErr; +} + + +//_____________________________________________________________________________ +// +OSStatus AUPannerBase::SetParameter( AudioUnitParameterID inParamID, + AudioUnitScope inScope, + AudioUnitElement inElement, + Float32 inValue, + UInt32 inBufferOffsetInFrames) +{ + if (inScope != kAudioUnitScope_Global) + return kAudioUnitErr_InvalidScope; + + Globals()->SetParameter(inParamID, inValue); + + return noErr; +} + + + +//_____________________________________________________________________________ +// +/*! @method GetPropertyInfo */ +OSStatus AUPannerBase::GetPropertyInfo (AudioUnitPropertyID inID, + AudioUnitScope inScope, + AudioUnitElement inElement, + UInt32 & outDataSize, + Boolean & outWritable) +{ + OSStatus err = noErr; + switch (inID) { + case kAudioUnitProperty_BypassEffect: + if (inScope != kAudioUnitScope_Global) + return kAudioUnitErr_InvalidScope; + + outWritable = true; + outDataSize = sizeof (UInt32); + break; + default: + err = AUBase::GetPropertyInfo(inID, inScope, inElement, outDataSize, outWritable); + } + return err; +} + +//_____________________________________________________________________________ +// +/*! @method GetProperty */ +OSStatus AUPannerBase::GetProperty (AudioUnitPropertyID inID, + AudioUnitScope inScope, + AudioUnitElement inElement, + void * outData) +{ + OSStatus err = noErr; + switch (inID) + { + case kAudioUnitProperty_BypassEffect: + if (inScope != kAudioUnitScope_Global) + return kAudioUnitErr_InvalidScope; + + *((UInt32*)outData) = (IsBypassEffect() ? 1 : 0); + break; + default: + err = AUBase::GetProperty(inID, inScope, inElement, outData); + } + return err; +} + +//_____________________________________________________________________________ +// +/*! @method SetProperty */ +OSStatus AUPannerBase::SetProperty(AudioUnitPropertyID inID, + AudioUnitScope inScope, + AudioUnitElement inElement, + const void * inData, + UInt32 inDataSize) +{ + switch (inID) + { + case kAudioUnitProperty_BypassEffect: + if (inDataSize < sizeof(UInt32)) + return kAudioUnitErr_InvalidPropertyValue; + bool tempNewSetting = *((UInt32*)inData) != 0; + // we're changing the state of bypass + if (tempNewSetting != IsBypassEffect()) + { + if (!tempNewSetting && IsBypassEffect() && IsInitialized()) // turning bypass off and we're initialized + Reset(0, 0); + SetBypassEffect (tempNewSetting); + } + return noErr; + } + return AUBase::SetProperty(inID, inScope, inElement, inData, inDataSize); +} + + +//_____________________________________________________________________________ +// +/*! @method StreamFormatWritable */ +bool AUPannerBase::StreamFormatWritable (AudioUnitScope scope, + AudioUnitElement element) +{ + return true; +} + +//_____________________________________________________________________________ +// +/*! @method ChangeStreamFormat */ +OSStatus AUPannerBase::ChangeStreamFormat ( + AudioUnitScope inScope, + AudioUnitElement inElement, + const CAStreamBasicDescription & inPrevFormat, + const CAStreamBasicDescription & inNewFormat) +{ + if (inScope == kAudioUnitScope_Input && !InputChannelConfigIsSupported(inNewFormat.NumberChannels())) + return kAudioUnitErr_FormatNotSupported; + + if (inScope == kAudioUnitScope_Output && !OutputChannelConfigIsSupported(inNewFormat.NumberChannels())) + return kAudioUnitErr_FormatNotSupported; + + if (inNewFormat.NumberChannels() != inPrevFormat.NumberChannels()) + RemoveAudioChannelLayout(inScope, inElement); + + return AUBase::ChangeStreamFormat(inScope, inElement, inPrevFormat, inNewFormat); +} + +//_____________________________________________________________________________ +// +/*! @method Render */ +OSStatus AUPannerBase::Render(AudioUnitRenderActionFlags & ioActionFlags, + const AudioTimeStamp & inTimeStamp, + UInt32 inNumberFrames) +{ + if (IsBypassEffect()) + return BypassRender(ioActionFlags, inTimeStamp, inNumberFrames); + else + return PannerRender(ioActionFlags, inTimeStamp, inNumberFrames); +} + +//_____________________________________________________________________________ +// +/*! @method Render */ +OSStatus AUPannerBase::BypassRender(AudioUnitRenderActionFlags & ioActionFlags, + const AudioTimeStamp & inTimeStamp, + UInt32 inNumberFrames) +{ + AudioUnitRenderActionFlags xflags = 0; + OSStatus result = PullInput(0, xflags, inTimeStamp, inNumberFrames); + if (result) return false; + bool isSilent = xflags & kAudioUnitRenderAction_OutputIsSilence; + + AudioBufferList& outputBufferList = GetOutput(0)->GetBufferList(); + AUBufferList::ZeroBuffer(outputBufferList); + + if (!isSilent) + { + UInt32 inChannels = GetNumberOfInputChannels(); + UInt32 outChannels = GetNumberOfOutputChannels(); + Float32* bypass = mBypassMatrix(); + for (UInt32 outChan = 0; outChan < outChannels; ++outChan) + { + float* outData = GetOutput(0)->GetChannelData(outChan); + + for (UInt32 inChan = 0; inChan < inChannels; ++inChan) + { + float* inData = GetInput(0)->GetChannelData(inChan); + float *amp = bypass + (inChan * outChannels + outChan); + vDSP_vsma(inData, 1, amp, outData, 1, outData, 1, inNumberFrames); + } + } + } + return noErr; +} + +//_____________________________________________________________________________ +// +UInt32 AUPannerBase::GetAudioChannelLayout( AudioUnitScope inScope, + AudioUnitElement inElement, + AudioChannelLayout * outLayoutPtr, + Boolean & outWritable) +{ + SetDefaultChannelLayoutsIfNone(); + + outWritable = true; + + CAAudioChannelLayout* caacl = NULL; + switch (inScope) + { + case kAudioUnitScope_Input: + caacl = &mInputLayout; + break; + case kAudioUnitScope_Output: + caacl = &mOutputLayout; + break; + default: + COMPONENT_THROW(kAudioUnitErr_InvalidScope); + } + + if (inElement != 0) + COMPONENT_THROW(kAudioUnitErr_InvalidElement); + + UInt32 size = caacl->IsValid() ? caacl->Size() : 0; + if (size > 0 && outLayoutPtr) + memcpy(outLayoutPtr, &caacl->Layout(), size); + + return size; +} + +//_____________________________________________________________________________ +// +OSStatus AUPannerBase::RemoveAudioChannelLayout( AudioUnitScope inScope, + AudioUnitElement inElement) +{ + CAAudioChannelLayout* caacl = NULL; + switch (inScope) + { + case kAudioUnitScope_Input: + caacl = &mInputLayout; + break; + case kAudioUnitScope_Output: + caacl = &mOutputLayout; + break; + default: + return kAudioUnitErr_InvalidScope; + } + + if (inElement != 0) + return kAudioUnitErr_InvalidElement; + + *caacl = NULL; + return noErr; +} + +//_____________________________________________________________________________ +// +OSStatus AUPannerBase::SetAudioChannelLayout( AudioUnitScope inScope, + AudioUnitElement inElement, + const AudioChannelLayout * inLayout) +{ + if (!inLayout) + return RemoveAudioChannelLayout(inScope, inElement); + + if (!ChannelLayoutTagIsSupported(inScope, inElement, inLayout->mChannelLayoutTag)) + return kAudioUnitErr_FormatNotSupported; + + CAAudioChannelLayout* caacl = NULL; + UInt32 currentChannels; + switch (inScope) + { + case kAudioUnitScope_Input: + caacl = &mInputLayout; + currentChannels = GetNumberOfInputChannels(); + break; + case kAudioUnitScope_Output: + caacl = &mOutputLayout; + currentChannels = GetNumberOfOutputChannels(); + break; + default: + return kAudioUnitErr_InvalidScope; + } + + if (inElement != 0) + return kAudioUnitErr_InvalidElement; + + UInt32 numChannelsInLayout = CAAudioChannelLayout::NumberChannels(*inLayout); + if (currentChannels != numChannelsInLayout) + return kAudioUnitErr_InvalidPropertyValue; + + *caacl = inLayout; + if (IsInitialized()) + UpdateBypassMatrix(); + + return noErr; +} + +//_____________________________________________________________________________ +// +UInt32 AUPannerBase::GetChannelLayoutTags( AudioUnitScope inScope, + AudioUnitElement inElement, + AudioChannelLayoutTag* outTags) +{ + switch (inScope) + { + case kAudioUnitScope_Input: + if (outTags) { + outTags[0] = kAudioChannelLayoutTag_Mono; + outTags[1] = kAudioChannelLayoutTag_Stereo; + outTags[2] = kAudioChannelLayoutTag_Ambisonic_B_Format; + } + return 3; + case kAudioUnitScope_Output: + if (outTags) { + outTags[0] = kAudioChannelLayoutTag_Stereo; + outTags[1] = kAudioChannelLayoutTag_Quadraphonic; + outTags[2] = kAudioChannelLayoutTag_AudioUnit_5_0; + outTags[3] = kAudioChannelLayoutTag_AudioUnit_6_0; + outTags[4] = kAudioChannelLayoutTag_AudioUnit_7_0; + outTags[5] = kAudioChannelLayoutTag_AudioUnit_7_0_Front; + outTags[6] = kAudioChannelLayoutTag_AudioUnit_8; + } + return 7; + default: { + OSStatus err = kAudioUnitErr_InvalidScope; + throw err; + } + } +} + + + +//_____________________________________________________________________________ +// +bool AUPannerBase::ChannelConfigIsSupported() +{ + UInt32 inChannels = GetNumberOfInputChannels(); + UInt32 outChannels = GetNumberOfOutputChannels(); + const AUChannelInfo* cinfo = NULL; + UInt32 numConfigs = SupportedNumChannels(&cinfo); + for (UInt32 i = 0; i < numConfigs; ++i) + { + if (cinfo[i].inChannels == (SInt16)inChannels && cinfo[i].outChannels == (SInt16)outChannels) + return true; + } + return false; +} + + +//_____________________________________________________________________________ +// +bool AUPannerBase::InputChannelConfigIsSupported(UInt32 inNumberChannels) +{ + const AUChannelInfo* cinfo = NULL; + UInt32 numConfigs = SupportedNumChannels(&cinfo); + for (UInt32 i = 0; i < numConfigs; ++i) + { + if (cinfo[i].inChannels == (SInt16)inNumberChannels) + return true; + } + return false; +} + +//_____________________________________________________________________________ +// +bool AUPannerBase::OutputChannelConfigIsSupported(UInt32 inNumberChannels) +{ + const AUChannelInfo* cinfo = NULL; + UInt32 numConfigs = SupportedNumChannels(&cinfo); + for (UInt32 i = 0; i < numConfigs; ++i) + { + if (cinfo[i].outChannels == (SInt16)inNumberChannels) + return true; + } + return false; +} + +//_____________________________________________________________________________ +// +bool AUPannerBase::ChannelLayoutTagIsSupported( AudioUnitScope inScope, + AudioUnitElement inElement, + AudioChannelLayoutTag inTag) +{ + UInt32 numTags = GetChannelLayoutTags(inScope, inElement, NULL); + CAAutoFree<AudioChannelLayoutTag> tags(numTags); + GetChannelLayoutTags(inScope, inElement, tags()); + + for (UInt32 i = 0; i < numTags; ++i) + { + if (tags[i] == inTag) + return true; + } + + return false; +} + |