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108 lines
4.8 KiB
C
108 lines
4.8 KiB
C
// File: ImmrHIDUtilAddOn.c
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// Abstract: Glue code to convert IOHIDDeviceRef's to (FFB) io_object_t's
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// Version: 2.0
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//
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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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//
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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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//
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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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//
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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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//
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// Copyright (C) 2009 Apple Inc. All Rights Reserved.
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//
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//*****************************************************
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#include <AvailabilityMacros.h>
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#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1050
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#include <mach/mach.h>
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#include <mach/mach_error.h>
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#include "ImmrHIDUtilAddOn.h"
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//---------------------------------------------------------------------------------
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//
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// AllocateHIDObjectFromIOHIDDeviceRef( )
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//
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// returns:
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// NULL, or acceptable io_object_t
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//
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//---------------------------------------------------------------------------------
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io_service_t AllocateHIDObjectFromIOHIDDeviceRef(IOHIDDeviceRef inIOHIDDeviceRef) {
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io_service_t result = 0L;
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if ( inIOHIDDeviceRef ) {
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// Set up the matching criteria for the devices we're interested in.
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// We are interested in instances of class IOHIDDevice.
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// matchingDict is consumed below( in IOServiceGetMatchingService )
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// so we have no leak here.
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CFMutableDictionaryRef matchingDict = IOServiceMatching(kIOHIDDeviceKey);
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if ( matchingDict ) {
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// Add a key for locationID to our matching dictionary. This works for matching to
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// IOHIDDevices, so we will only look for a device attached to that particular port
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// on the machine.
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CFTypeRef tCFTypeRef = IOHIDDeviceGetProperty( inIOHIDDeviceRef, CFSTR(kIOHIDLocationIDKey) );
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if ( tCFTypeRef ) {
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CFDictionaryAddValue(matchingDict, CFSTR(kIOHIDLocationIDKey), tCFTypeRef);
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// CFRelease( tCFTypeRef ); // don't release objects that we "Get".
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// IOServiceGetMatchingService assumes that we already know that there is only one device
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// that matches. This way we don't have to do the whole iteration dance to look at each
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// device that matches. This is a new API in 10.2
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result = IOServiceGetMatchingService(kIOMasterPortDefault, matchingDict);
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}
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// Note: We're not leaking the matchingDict.
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// One reference is consumed by IOServiceGetMatchingServices
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}
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}
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return (result);
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} // AllocateHIDObjectFromIOHIDDeviceRef
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//---------------------------------------------------------------------------------
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//
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// FreeHIDObject( )
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//
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//---------------------------------------------------------------------------------
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bool FreeHIDObject(io_service_t inHIDObject) {
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kern_return_t kr;
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kr = IOObjectRelease(inHIDObject);
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return (kIOReturnSuccess == kr);
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} // FreeHIDObject
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#endif // MAC_OS_X_VERSION_MAX_ALLOWED >= 1050
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