/* * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * The contents of this file constitute Original Code as defined in and * are subject to the Apple Public Source License Version 1.1 (the * "License"). You may not use this file except in compliance with the * License. Please obtain a copy of the License at * http://www.apple.com/publicsource and read it before using this file. * * This 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 OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* File: HIDPostProcessRIValue.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> 4/7/99 BWS first checked in */ #include "HIDLib.h" /* *------------------------------------------------------------------------------ * * HIDPostProcessRIValue - performs any post-processing necessary for data * retrieved _from_ a report for the specified report * item. Currently, the only post-processing done * is reversing when appropriate * * Input: * reportItem - The report item * value - the value, from HIDGetData * Output: * value - The processed value * Returns: * kHIDSuccess - Success * *------------------------------------------------------------------------------ */ OSStatus HIDPostProcessRIValue (HIDReportItem * reportItem, SInt32 * value) { // if isReversed, returnValue = ((min - returnValue) + max) if (reportItem->flags & kHIDReportItemFlag_Reversed) *value = ((reportItem->globals.logicalMinimum - (*value)) + reportItem->globals.logicalMaximum); return kHIDSuccess; } /* *------------------------------------------------------------------------------ * * HIDPreProcessRIValue - performs any pre-processing necessary for data * ouput _to_ a report for the specified report * item. Currently, the only pre-processing done * is reversing when appropriate * * Input: * reportItem - The report item * value - the value, destined for HIDPutData * Output: * value - The processed value * Returns: * kHIDSuccess - Success * *------------------------------------------------------------------------------ */ OSStatus HIDPreProcessRIValue (HIDReportItem * reportItem, SInt32 * value) { // if isReversed, returnValue = ((min - returnValue) + max) if (reportItem->flags & kHIDReportItemFlag_Reversed) *value = ((reportItem->globals.logicalMinimum - (*value)) + reportItem->globals.logicalMaximum); return kHIDSuccess; }