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Diffstat (limited to 'distrho/src/CoreAudio106/AudioUnits/AUPublic/AUBase/ComponentBase.cpp')
| -rwxr-xr-x | distrho/src/CoreAudio106/AudioUnits/AUPublic/AUBase/ComponentBase.cpp | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/distrho/src/CoreAudio106/AudioUnits/AUPublic/AUBase/ComponentBase.cpp b/distrho/src/CoreAudio106/AudioUnits/AUPublic/AUBase/ComponentBase.cpp new file mode 100755 index 00000000..38e2f064 --- /dev/null +++ b/distrho/src/CoreAudio106/AudioUnits/AUPublic/AUBase/ComponentBase.cpp @@ -0,0 +1,189 @@ +/* Copyright © 2007 Apple Inc. All Rights Reserved. + + 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. +*/ +#include "ComponentBase.h" +#include "CAXException.h" + +#if TARGET_OS_MAC +pthread_mutex_t ComponentInitLocker::sComponentOpenMutex = PTHREAD_MUTEX_INITIALIZER; +#elif TARGET_OS_WIN32 +CAGuard ComponentInitLocker::sComponentOpenGuard("sComponentOpenGuard"); +#endif + +#if CA_DO_NOT_USE_AUDIO_COMPONENT + #include <dlfcn.h> +#endif + +ComponentBase::~ComponentBase() +{ +} + +void ComponentBase::PostConstructor() +{ +} + +void ComponentBase::PreDestructor() +{ +} + +#if !TARGET_OS_IPHONE +OSStatus ComponentBase::Version() +{ + return 0x00000001; +} + +OSStatus ComponentBase::ComponentEntryDispatch(ComponentParameters *p, ComponentBase *This) +{ + if (This == NULL) return paramErr; + + OSStatus result = noErr; + + switch (p->what) { + case kComponentCloseSelect: + This->PreDestructor(); + delete This; + break; + + case kComponentVersionSelect: + result = This->Version(); + break; + + case kComponentCanDoSelect: + switch (p->params[0]) { + case kComponentOpenSelect: + case kComponentCloseSelect: + case kComponentVersionSelect: + case kComponentCanDoSelect: + return 1; + default: + return 0; + } + + default: + result = badComponentSelector; + break; + } + return result; +} +#endif + +#if CA_DO_NOT_USE_AUDIO_COMPONENT +static OSStatus ComponentBase_GetComponentDescription (const AudioComponentInstance & inInstance, AudioComponentDescription &outDesc); +#endif + +AudioComponentDescription ComponentBase::GetComponentDescription() const +{ + AudioComponentDescription desc; + OSStatus result; + +#if CA_DO_NOT_USE_AUDIO_COMPONENT + ca_require_noerr (result = ComponentBase_GetComponentDescription (mComponentInstance, desc), home); +#else + AudioComponent comp = AudioComponentInstanceGetComponent(mComponentInstance); + XAssert (comp); + if (comp) { + ca_require_noerr(result = AudioComponentGetDescription(comp, &desc), home); + } else + ca_require_noerr(result = -1, home); +#endif + +home: + if (result) + memset (&desc, 0, sizeof(AudioComponentDescription)); + return desc; +} + + +#if CA_DO_NOT_USE_AUDIO_COMPONENT +OSStatus ComponentBase_GetComponentDescription (const AudioComponentInstance & inInstance, AudioComponentDescription & outDesc) +{ + // we prefer to use the new API. If it is not available however, we have to go back to using the ComponentMgr one. + typedef AudioComponent (*AudioComponentInstanceGetComponentProc) (AudioComponentInstance); + static AudioComponentInstanceGetComponentProc aciGCProc = NULL; + + typedef OSStatus (*AudioComponentGetDescriptionProc)(AudioComponent, AudioComponentDescription *); + static AudioComponentGetDescriptionProc acGDProc = NULL; + + typedef OSErr (*GetComponentInfoProc)(Component, ComponentDescription *, void*, void*, void*); + static GetComponentInfoProc gciProc = NULL; + + static int doneInit = 0; + if (doneInit == 0) { + doneInit = 1; + bool loadCMgr = true; + + void* theImage = dlopen("/System/Library/Frameworks/AudioUnit.framework/AudioUnit", RTLD_LAZY); + if (theImage != NULL) + { + // we assume that all routine names passed here have a leading underscore which gets shaved + // off when passed to dlsym + aciGCProc = (AudioComponentInstanceGetComponentProc)dlsym (theImage, "AudioComponentInstanceGetComponent"); + if (aciGCProc) { + acGDProc = (AudioComponentGetDescriptionProc)dlsym (theImage, "AudioComponentGetDescription"); + if (acGDProc) + loadCMgr = false; + } + } + if (loadCMgr) { + theImage = dlopen("/System/Library/Frameworks/CoreServices.framework/CoreServices", RTLD_LAZY); + if (theImage != NULL) + { + gciProc = (GetComponentInfoProc)dlsym (theImage, "GetComponentInfo"); + } + } + } + + OSStatus result = noErr; + if (acGDProc && aciGCProc) { + AudioComponent comp = (*aciGCProc)(inInstance); + XAssert (comp); + if (comp) { + ca_require_noerr(result = (*acGDProc)(comp, &outDesc), home); + } else + ca_require_noerr(result = -1, home); + + } else if (gciProc) { + // in this case we know that inInstance is directly castable to a Component + ca_require_noerr(result = (*gciProc)((Component)inInstance, (ComponentDescription*)&outDesc, NULL, NULL, NULL), home); + } +home: + return result; +} +#endif //CA_DO_NOT_USE_AUDIO_COMPONENT |