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00001 /********************************************************************* 00002 * Software License Agreement (BSD License) 00003 * 00004 * Copyright (c) 2009, 2010 Willow Garage, Inc. 00005 * All rights reserved. 00006 * 00007 * Redistribution and use in source and binary forms, with or without 00008 * modification, are permitted provided that the following conditions 00009 * are met: 00010 * 00011 * * Redistributions of source code must retain the above copyright 00012 * notice, this list of conditions and the following disclaimer. 00013 * * Redistributions in binary form must reproduce the above 00014 * copyright notice, this list of conditions and the following 00015 * disclaimer in the documentation and/or other materials provided 00016 * with the distribution. 00017 * * Neither the name of the Willow Garage nor the names of its 00018 * contributors may be used to endorse or promote products derived 00019 * from this software without specific prior written permission. 00020 * 00021 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00022 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00023 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 00024 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 00025 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 00026 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 00027 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 00028 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 00029 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00030 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 00031 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00032 * POSSIBILITY OF SUCH DAMAGE. 00033 *********************************************************************/ 00034 00035 /* 00036 * @file list.c 00037 * 00038 */ 00039 #include <stdlib.h> 00040 #include "wge100_camera/list.h" 00041 #include "wge100_camera/host_netutil.h" 00042 00050 int wge100CamListInit( IpCamList *ipCamList ) { 00051 INIT_LIST_HEAD(&ipCamList->list); 00052 return 0; 00053 } 00054 00055 00065 int wge100CamListAdd( IpCamList *ipCamList, IpCamList *newItem) { 00066 IpCamList *listIterator; 00067 00068 int isInList = 0; 00069 00070 // Scan through the list, looking for a serial number that matches the one we're trying to add 00071 list_for_each_entry(listIterator, &(ipCamList->list), list) { 00072 if( newItem->serial == listIterator->serial) { 00073 // This camera is already in the list 00074 isInList = 1; 00075 break; 00076 } 00077 } 00078 00079 if(isInList == 1) { 00080 wge100_debug("Serial number %d already exists in list, dropping.\n", newItem->serial); 00081 return CAMLIST_ADD_DUP; 00082 } else { 00083 wge100_debug("Serial number %d is new, adding to list.\n", newItem->serial); 00084 list_add_tail( &(newItem->list), &(ipCamList->list) ); 00085 return CAMLIST_ADD_OK; 00086 } 00087 00088 } 00089 00096 int wge100CamListFind( IpCamList *ipCamList, uint32_t serial ) { 00097 int count; 00098 00099 IpCamList *listIterator; 00100 count = 0; 00101 00102 list_for_each_entry(listIterator, &(ipCamList->list), list) { 00103 if(listIterator->serial == serial) { 00104 return count; 00105 } 00106 count++; 00107 } 00108 00109 return -1; 00110 } 00111 00123 IpCamList *wge100CamListGetEntry( const IpCamList *ipCamList, int index ) { 00124 IpCamList *listIterator; 00125 00126 // Iterate through the list until we have counted off 'index' entries 00127 list_for_each_entry(listIterator, &(ipCamList->list), list) { 00128 if(index-- == 0) { 00129 break; 00130 } 00131 } 00132 00133 return listIterator; 00134 } 00135 00146 int wge100CamListDelEntry( IpCamList *ipCamList, int index ) { 00147 int count; 00148 00149 IpCamList *tmpListItem; 00150 struct list_head *pos, *q; 00151 count = 0; 00152 00153 list_for_each_safe(pos, q,&(ipCamList->list)) { 00154 if(count++ == index) { 00155 tmpListItem = list_entry(pos, IpCamList, list); 00156 list_del(pos); 00157 free(tmpListItem); 00158 return 0; 00159 } 00160 } 00161 return -1; 00162 } 00163 00171 int wge100CamListNumEntries( const IpCamList *ipCamList ) { 00172 int count; 00173 00174 IpCamList *listIterator; 00175 count = 0; 00176 00177 list_for_each_entry(listIterator, &(ipCamList->list), list) { 00178 count++; 00179 } 00180 00181 return count; 00182 } 00183 00191 void wge100CamListDelAll( IpCamList *ipCamList ) { 00192 int count; 00193 00194 IpCamList *tmpListItem; 00195 struct list_head *pos, *q; 00196 count = 0; 00197 00198 list_for_each_safe(pos, q,&(ipCamList->list)) { 00199 tmpListItem = list_entry(pos, IpCamList, list); 00200 list_del(pos); 00201 free(tmpListItem); 00202 } 00203 }