/* * @APPLE_LICENSE_HEADER_START@ * * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* File: HIDUsageInRange.c Contains: xxx put contents here xxx Version: xxx put version here xxx Copyright: � 1999 by Apple Computer, Inc., all rights reserved. File Ownership: DRI: xxx put dri here xxx Other Contact: xxx put other contact here xxx Technology: xxx put technology here xxx Writers: (BWS) Brent Schorsch Change History (most recent first): <USB1> 3/5/99 BWS first checked in */ #include "HIDLib.h" /* *------------------------------------------------------------------------------ * * HIDUsageInRange * * Input: * ptUsage - The usage/UsageRange Item * usagePage - The usagePage of the Item - or zero * usage - The usage of the Item * Output: * Returns: * true - usagePage/usage is in usage/UsageRange * false - usagePage/usage is not in usage/UsageRange * *------------------------------------------------------------------------------ */ Boolean HIDUsageInRange (HIDP_UsageItem *ptUsage, HIDUsage usagePage, HIDUsage usage) { /* * Disallow Null Pointers */ if (ptUsage == NULL) return false; /* * Check for the proper Page, 0 means don't care */ if ((usagePage != 0) && (ptUsage->usagePage != usagePage)) return false; /* * usage = 0 means don't care */ if (usage == 0) return true; /* * The requested usage must match or be in the range */ if (ptUsage->isRange) { if ((ptUsage->usageMinimum > (SInt32)usage) || (ptUsage->usageMaximum < (SInt32)usage)) return false; } else { if (ptUsage->usage != usage) return false; } return true; }