182 lines
7.5 KiB
C++
182 lines
7.5 KiB
C++
/*
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File: CAHALAudioSystemObject.cpp
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Abstract: CAHALAudioSystemObject.h
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Version: 1.1
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Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple
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Inc. ("Apple") in consideration of your agreement to the following
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terms, and your use, installation, modification or redistribution of
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this Apple software constitutes acceptance of these terms. If you do
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not agree with these terms, please do not use, install, modify or
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redistribute this Apple software.
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In consideration of your agreement to abide by the following terms, and
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subject to these terms, Apple grants you a personal, non-exclusive
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license, under Apple's copyrights in this original Apple software (the
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"Apple Software"), to use, reproduce, modify and redistribute the Apple
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Software, with or without modifications, in source and/or binary forms;
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provided that if you redistribute the Apple Software in its entirety and
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without modifications, you must retain this notice and the following
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text and disclaimers in all such redistributions of the Apple Software.
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Neither the name, trademarks, service marks or logos of Apple Inc. may
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be used to endorse or promote products derived from the Apple Software
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without specific prior written permission from Apple. Except as
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expressly stated in this notice, no other rights or licenses, express or
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implied, are granted by Apple herein, including but not limited to any
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patent rights that may be infringed by your derivative works or by other
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works in which the Apple Software may be incorporated.
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The Apple Software is provided by Apple on an "AS IS" basis. APPLE
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MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
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THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
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FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
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OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
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IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
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MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
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AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
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STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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Copyright (C) 2014 Apple Inc. All Rights Reserved.
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*/
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//==================================================================================================
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// Includes
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//==================================================================================================
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// Self Include
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#include "CAHALAudioSystemObject.h"
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// PublicUtility Includes
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#include "CAAutoDisposer.h"
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#include "CACFString.h"
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#include "CAHALAudioDevice.h"
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#include "CAPropertyAddress.h"
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//==================================================================================================
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// CAHALAudioSystemObject
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//==================================================================================================
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CAHALAudioSystemObject::CAHALAudioSystemObject()
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:
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CAHALAudioObject(kAudioObjectSystemObject)
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{
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}
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CAHALAudioSystemObject::~CAHALAudioSystemObject()
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{
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}
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UInt32 CAHALAudioSystemObject::GetNumberAudioDevices() const
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{
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CAPropertyAddress theAddress(kAudioHardwarePropertyDevices);
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UInt32 theAnswer = GetPropertyDataSize(theAddress, 0, NULL);
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theAnswer /= SizeOf32(AudioObjectID);
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return theAnswer;
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}
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void CAHALAudioSystemObject::GetAudioDevices(UInt32& ioNumberAudioDevices, AudioObjectID* outAudioDevices) const
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{
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CAPropertyAddress theAddress(kAudioHardwarePropertyDevices);
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UInt32 theSize = ioNumberAudioDevices * SizeOf32(AudioObjectID);
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GetPropertyData(theAddress, 0, NULL, theSize, outAudioDevices);
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ioNumberAudioDevices = theSize / SizeOf32(AudioObjectID);
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}
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AudioObjectID CAHALAudioSystemObject::GetAudioDeviceAtIndex(UInt32 inIndex) const
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{
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AudioObjectID theAnswer = kAudioObjectUnknown;
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UInt32 theNumberDevices = GetNumberAudioDevices();
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if((theNumberDevices > 0) && (inIndex < theNumberDevices))
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{
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CAAutoArrayDelete<AudioObjectID> theDeviceList(theNumberDevices);
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GetAudioDevices(theNumberDevices, theDeviceList);
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if((theNumberDevices > 0) && (inIndex < theNumberDevices))
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{
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theAnswer = theDeviceList[inIndex];
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}
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}
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return theAnswer;
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}
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AudioObjectID CAHALAudioSystemObject::GetAudioDeviceForUID(CFStringRef inUID) const
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{
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AudioObjectID theAnswer = kAudioObjectUnknown;
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AudioValueTranslation theValue = { &inUID, sizeof(CFStringRef), &theAnswer, sizeof(AudioObjectID) };
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CAPropertyAddress theAddress(kAudioHardwarePropertyDeviceForUID);
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UInt32 theSize = sizeof(AudioValueTranslation);
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GetPropertyData(theAddress, 0, NULL, theSize, &theValue);
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return theAnswer;
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}
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void CAHALAudioSystemObject::LogBasicDeviceInfo()
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{
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UInt32 theNumberDevices = GetNumberAudioDevices();
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CAAutoArrayDelete<AudioObjectID> theDeviceList(theNumberDevices);
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GetAudioDevices(theNumberDevices, theDeviceList);
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DebugMessageN1("CAHALAudioSystemObject::LogBasicDeviceInfo: %d devices", (int)theNumberDevices);
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for(UInt32 theDeviceIndex = 0; theDeviceIndex < theNumberDevices; ++theDeviceIndex)
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{
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char theCString[256];
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UInt32 theCStringSize = sizeof(theCString);
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DebugMessageN1("CAHALAudioSystemObject::LogBasicDeviceInfo: Device %d", (int)theDeviceIndex);
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CAHALAudioDevice theDevice(theDeviceList[theDeviceIndex]);
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DebugMessageN1("CAHALAudioSystemObject::LogBasicDeviceInfo: Object ID: %d", (int)theDeviceList[theDeviceIndex]);
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CACFString theDeviceName(theDevice.CopyName());
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theCStringSize = sizeof(theCString);
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theDeviceName.GetCString(theCString, theCStringSize);
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DebugMessageN1("CAHALAudioSystemObject::LogBasicDeviceInfo: Name: %s", theCString);
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CACFString theDeviceUID(theDevice.CopyDeviceUID());
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theCStringSize = sizeof(theCString);
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theDeviceUID.GetCString(theCString, theCStringSize);
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DebugMessageN1("CAHALAudioSystemObject::LogBasicDeviceInfo: UID: %s", theCString);
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}
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}
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static inline AudioObjectPropertySelector CAHALAudioSystemObject_CalculateDefaultDeviceProperySelector(bool inIsInput, bool inIsSystem)
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{
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AudioObjectPropertySelector theAnswer = kAudioHardwarePropertyDefaultOutputDevice;
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if(inIsInput)
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{
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theAnswer = kAudioHardwarePropertyDefaultInputDevice;
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}
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else if(inIsSystem)
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{
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theAnswer = kAudioHardwarePropertyDefaultSystemOutputDevice;
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}
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return theAnswer;
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}
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AudioObjectID CAHALAudioSystemObject::GetDefaultAudioDevice(bool inIsInput, bool inIsSystem) const
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{
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AudioObjectID theAnswer = kAudioObjectUnknown;
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CAPropertyAddress theAddress(CAHALAudioSystemObject_CalculateDefaultDeviceProperySelector(inIsInput, inIsSystem));
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UInt32 theSize = sizeof(AudioObjectID);
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GetPropertyData(theAddress, 0, NULL, theSize, &theAnswer);
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return theAnswer;
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}
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void CAHALAudioSystemObject::SetDefaultAudioDevice(bool inIsInput, bool inIsSystem, AudioObjectID inNewDefaultDevice)
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{
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CAPropertyAddress theAddress(CAHALAudioSystemObject_CalculateDefaultDeviceProperySelector(inIsInput, inIsSystem));
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UInt32 theSize = sizeof(AudioObjectID);
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SetPropertyData(theAddress, 0, NULL, theSize, &inNewDefaultDevice);
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}
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AudioObjectID CAHALAudioSystemObject::GetAudioPlugInForBundleID(CFStringRef inUID) const
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{
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AudioObjectID theAnswer = kAudioObjectUnknown;
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AudioValueTranslation theValue = { &inUID, sizeof(CFStringRef), &theAnswer, sizeof(AudioObjectID) };
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CAPropertyAddress theAddress(kAudioHardwarePropertyPlugInForBundleID);
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UInt32 theSize = sizeof(AudioValueTranslation);
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GetPropertyData(theAddress, 0, NULL, theSize, &theValue);
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return theAnswer;
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}
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