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Diffstat (limited to 'distrho/src/CoreAudio106/PublicUtility/CAHALAudioSystemObject.cpp')
| -rwxr-xr-x | distrho/src/CoreAudio106/PublicUtility/CAHALAudioSystemObject.cpp | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/distrho/src/CoreAudio106/PublicUtility/CAHALAudioSystemObject.cpp b/distrho/src/CoreAudio106/PublicUtility/CAHALAudioSystemObject.cpp new file mode 100755 index 00000000..f92c8cb6 --- /dev/null +++ b/distrho/src/CoreAudio106/PublicUtility/CAHALAudioSystemObject.cpp @@ -0,0 +1,146 @@ +/* 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. +*/ +//================================================================================================== +// Includes +//================================================================================================== + +// Self Include +#include "CAHALAudioSystemObject.h" + +// PublicUtility Includes +#include "CAAutoDisposer.h" +#include "CAPropertyAddress.h" + +//================================================================================================== +// CAHALAudioSystemObject +//================================================================================================== + +CAHALAudioSystemObject::CAHALAudioSystemObject() +: + CAHALAudioObject(kAudioObjectSystemObject) +{ +} + +CAHALAudioSystemObject::~CAHALAudioSystemObject() +{ +} + +UInt32 CAHALAudioSystemObject::GetNumberAudioDevices() const +{ + CAPropertyAddress theAddress(kAudioHardwarePropertyDevices); + UInt32 theAnswer = GetPropertyDataSize(theAddress, 0, NULL); + theAnswer /= sizeof(AudioObjectID); + return theAnswer; +} + +void CAHALAudioSystemObject::GetAudioDevices(UInt32& ioNumberAudioDevices, AudioObjectID* outAudioDevices) const +{ + CAPropertyAddress theAddress(kAudioHardwarePropertyDevices); + UInt32 theSize = ioNumberAudioDevices * sizeof(AudioObjectID); + GetPropertyData(theAddress, 0, NULL, theSize, outAudioDevices); + ioNumberAudioDevices = theSize / sizeof(AudioObjectID); +} + +AudioObjectID CAHALAudioSystemObject::GetAudioDeviceAtIndex(UInt32 inIndex) const +{ + AudioObjectID theAnswer = kAudioObjectUnknown; + UInt32 theNumberDevices = GetNumberAudioDevices(); + if((theNumberDevices > 0) && (inIndex < theNumberDevices)) + { + CAAutoArrayDelete<AudioObjectID> theDeviceList(theNumberDevices); + GetAudioDevices(theNumberDevices, theDeviceList); + if((theNumberDevices > 0) && (inIndex < theNumberDevices)) + { + theAnswer = theDeviceList[inIndex]; + } + } + return theAnswer; +} + +AudioObjectID CAHALAudioSystemObject::GetAudioDeviceForUID(CFStringRef inUID) const +{ + AudioObjectID theAnswer = kAudioObjectUnknown; + AudioValueTranslation theValue = { &inUID, sizeof(CFStringRef), &theAnswer, sizeof(AudioObjectID) }; + CAPropertyAddress theAddress(kAudioHardwarePropertyDeviceForUID); + UInt32 theSize = sizeof(AudioValueTranslation); + GetPropertyData(theAddress, 0, NULL, theSize, &theValue); + return theAnswer; +} + +static inline AudioObjectPropertySelector CAHALAudioSystemObject_CalculateDefaultDeviceProperySelector(bool inIsInput, bool inIsSystem) +{ + AudioObjectPropertySelector theAnswer = kAudioHardwarePropertyDefaultOutputDevice; + if(inIsInput) + { + theAnswer = kAudioHardwarePropertyDefaultInputDevice; + } + else if(inIsSystem) + { + theAnswer = kAudioHardwarePropertyDefaultSystemOutputDevice; + } + return theAnswer; +} + +AudioObjectID CAHALAudioSystemObject::GetDefaultAudioDevice(bool inIsInput, bool inIsSystem) const +{ + AudioObjectID theAnswer = kAudioObjectUnknown; + CAPropertyAddress theAddress(CAHALAudioSystemObject_CalculateDefaultDeviceProperySelector(inIsInput, inIsSystem)); + UInt32 theSize = sizeof(AudioObjectID); + GetPropertyData(theAddress, 0, NULL, theSize, &theAnswer); + return theAnswer; +} + +void CAHALAudioSystemObject::SetDefaultAudioDevice(bool inIsInput, bool inIsSystem, AudioObjectID inNewDefaultDevice) +{ + CAPropertyAddress theAddress(CAHALAudioSystemObject_CalculateDefaultDeviceProperySelector(inIsInput, inIsSystem)); + UInt32 theSize = sizeof(AudioObjectID); + SetPropertyData(theAddress, 0, NULL, theSize, &inNewDefaultDevice); +} + +AudioObjectID CAHALAudioSystemObject::GetAudioPlugInForBundleID(CFStringRef inUID) const +{ + AudioObjectID theAnswer = kAudioObjectUnknown; + AudioValueTranslation theValue = { &inUID, sizeof(CFStringRef), &theAnswer, sizeof(AudioObjectID) }; + CAPropertyAddress theAddress(kAudioHardwarePropertyPlugInForBundleID); + UInt32 theSize = sizeof(AudioValueTranslation); + GetPropertyData(theAddress, 0, NULL, theSize, &theValue); + return theAnswer; +} |