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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 | /* * 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: HIDProcessCollection.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" /* *------------------------------------------------------------------------------ * * HIDProcessCollection - Process a Collection MainItem * * Input: * ptDescriptor - The Descriptor Structure * ptPreparsedData - The PreParsedData Structure * Output: * ptDescriptor - The Descriptor Structure * ptPreparsedData - The PreParsedData Structure * Returns: * kHIDSuccess - Success * kHIDNullPointerErr - Argument, Pointer was Null * *------------------------------------------------------------------------------ */ OSStatus HIDProcessCollection(HIDReportDescriptor *ptDescriptor, HIDPreparsedDataPtr ptPreparsedData) { HIDCollection *collections; HIDCollection *ptCollection; int parent; int iCollection; /* * Disallow NULL Pointers */ if ((ptDescriptor == NULL) || (ptPreparsedData == NULL)) return kHIDNullPointerErr; /* * Initialize the new Collection Structure */ iCollection = ptPreparsedData->collectionCount++; collections = ptPreparsedData->collections; ptCollection = &collections[iCollection]; ptCollection->data = ptDescriptor->item.unsignedValue; ptCollection->firstUsageItem = ptDescriptor->firstUsageItem; ptCollection->usageItemCount = ptPreparsedData->usageItemCount - ptDescriptor->firstUsageItem; ptDescriptor->firstUsageItem = ptPreparsedData->usageItemCount; ptCollection->children = 0; ptCollection->nextSibling = ptDescriptor->sibling; ptDescriptor->sibling = 0; ptCollection->firstChild = 0; ptCollection->usagePage = ptDescriptor->globals.usagePage; ptCollection->firstReportItem = ptPreparsedData->reportItemCount; /* * Set up the relationship with the parent Collection */ parent = ptDescriptor->parent; ptCollection->parent = parent; collections[parent].firstChild = iCollection; collections[parent].children++; ptDescriptor->parent = iCollection; /* * Save the parent Collection Information on the stack */ ptDescriptor->collectionStack[ptDescriptor->collectionNesting++] = parent; return kHIDSuccess; } /* *------------------------------------------------------------------------------ * * HIDProcessEndCollection - Process an EndCollection MainItem * * Input: * ptDescriptor - The Descriptor Structure * ptPreparsedData - The PreParsedData Structure * Output: * ptPreparsedData - The PreParsedData Structure * Returns: * kHIDSuccess - Success * kHIDNullPointerErr - Argument, Pointer was Null * *------------------------------------------------------------------------------ */ OSStatus HIDProcessEndCollection(HIDReportDescriptor *ptDescriptor, HIDPreparsedDataPtr ptPreparsedData) { HIDCollection *ptCollection; int iCollection; /* * Remember the number of ReportItem MainItems in this Collection */ ptCollection = &ptPreparsedData->collections[ptDescriptor->parent]; ptCollection->reportItemCount = ptPreparsedData->reportItemCount - ptCollection->firstReportItem; /* * Restore the parent Collection Data */ iCollection = ptDescriptor->collectionStack[--ptDescriptor->collectionNesting]; ptDescriptor->sibling = ptDescriptor->parent; ptDescriptor->parent = iCollection; return kHIDSuccess; } |