diff options
Diffstat (limited to 'libs/appleutility/CoreAudio/PublicUtility/AUParamInfo.cpp')
-rw-r--r-- | libs/appleutility/CoreAudio/PublicUtility/AUParamInfo.cpp | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/libs/appleutility/CoreAudio/PublicUtility/AUParamInfo.cpp b/libs/appleutility/CoreAudio/PublicUtility/AUParamInfo.cpp new file mode 100644 index 0000000000..87d7848790 --- /dev/null +++ b/libs/appleutility/CoreAudio/PublicUtility/AUParamInfo.cpp @@ -0,0 +1,139 @@ +/* + File: AUParamInfo.cpp + Abstract: AUParamInfo.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 "AUParamInfo.h" +#include "CAXException.h" + +AUParamInfo::AUParamInfo (AudioUnit inAU, + bool inIncludeExpert, + bool inIncludeReadOnly, + AudioUnitScope inScope, + AudioUnitElement inElement) + : mAU (inAU), + mNumParams (0), + mParamListID(NULL), + mScope (inScope), + mElement (inElement) +{ + UInt32 size; + OSStatus result = AudioUnitGetPropertyInfo(mAU, kAudioUnitProperty_ParameterList, inScope, mElement, &size, NULL); + if (size == 0 || result) return; + + int nparams = size / sizeof(AudioUnitPropertyID); + mParamListID = new AudioUnitParameterID[nparams]; + + memset (mParamListID, 0xFF, size); + + AudioUnitParameterID *paramList = new AudioUnitParameterID[nparams]; + + result = AudioUnitGetProperty(mAU, kAudioUnitProperty_ParameterList, mScope, mElement, paramList, &size); + if (result) { + delete [] mParamListID; + delete [] paramList; + mParamListID = NULL; + return; + } + + ParameterMap params; + for (int i = 0; i < nparams; ++i) + { + CAAUParameter auvp (mAU, paramList[i], mScope, mElement); // took out only using global scope in CAAUParameter creation + const AudioUnitParameterInfo ¶mInfo = auvp.ParamInfo(); + + // don't include if parameter can't be read or written + if (!(paramInfo.flags & kAudioUnitParameterFlag_IsWritable) + && !(paramInfo.flags & kAudioUnitParameterFlag_IsReadable)) + continue; + + // only include if expert params wanted + if (!inIncludeExpert && auvp.IsExpert()) + continue; + + // only include if read only params are wanted + if (!(paramInfo.flags & kAudioUnitParameterFlag_IsWritable) + && (paramInfo.flags & kAudioUnitParameterFlag_IsReadable)) + { + if (!inIncludeReadOnly) + continue; + } + + mParamListID[mNumParams] = paramList[i]; + mNumParams++; + + // ok - if we're here, then we have a parameter we are going to display. + UInt32 clump = 0; + auvp.GetClumpID (clump); + mParams[clump].push_back (auvp); + } + + delete [] paramList; +} + +AUParamInfo::~AUParamInfo() +{ + delete [] mParamListID; +} + +UInt32 AUParamInfo::NumParamsForClump (UInt32 inClump) const +{ + ParameterMap::const_iterator it = mParams.find(inClump); + if (it != mParams.end()) + return static_cast<UInt32>((*it).second.size()); + return 0; +} + +const CAAUParameter* AUParamInfo::GetParamInfo (AudioUnitParameterID inParamID) const +{ + for (ParameterMap::const_iterator it = mParams.begin(); it != mParams.end(); ++it) { + const ParameterList &list = (*it).second; + for (ParameterList::const_iterator iter = list.begin(); iter != list.end(); ++iter) { + if (inParamID == (*iter).mParameterID) { + return &(*iter); + } + } + } + return NULL; +} |