videoeditorengine/h263decoder/inc/list.h
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     1 /*
       
     2 * Copyright (c) 2010 Ixonos Plc.
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of the "Eclipse Public License v1.0"
       
     6 * which accompanies this distribution, and is available
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - Initial contribution
       
    11 *
       
    12 * Contributors:
       
    13 * Ixonos Plc
       
    14 *
       
    15 * Description:  
       
    16 * Header for list.cpp.
       
    17 *
       
    18 */
       
    19 
       
    20 
       
    21 #ifndef _LIST_H_
       
    22 #define _LIST_H_
       
    23 
       
    24 
       
    25 /*
       
    26  * Defines
       
    27  */
       
    28 
       
    29 #define LST_ITEM_SKELETON \
       
    30    void *next;
       
    31 
       
    32 /*
       
    33  * Typedefs
       
    34  */
       
    35 
       
    36 /* A skeleton of a list item type. 
       
    37    Each real list item type must include these definitions in the beginning 
       
    38    of the structure. This structure has no use as such outside this module. */
       
    39 typedef struct lstListItem_s {
       
    40    void *next;
       
    41 } lstListItem_t;
       
    42 
       
    43 /* FIFO list */
       
    44 typedef struct {
       
    45    lstListItem_t *head;
       
    46    lstListItem_t *tail;
       
    47    int numItems;
       
    48 } fifo_t;
       
    49 
       
    50 /* LIFO list (stack) */
       
    51 typedef struct {
       
    52    lstListItem_t *head;
       
    53 } lifo_t;
       
    54 
       
    55 /* General linked list */
       
    56 typedef struct {
       
    57    lstListItem_t *head;
       
    58    lstListItem_t *prev;
       
    59    lstListItem_t *curr;
       
    60    int numItems;
       
    61 } lst_t;
       
    62 
       
    63 
       
    64 /*
       
    65  * Function prototypes
       
    66  */
       
    67 
       
    68 /* FIFO list functions */
       
    69 int fifoOpen(fifo_t *list);
       
    70 int fifoClose(fifo_t *list);
       
    71 int fifoPut(fifo_t *list, void *item);
       
    72 int fifoGet(fifo_t *list, void **item);
       
    73 int fifoPeek(fifo_t *list, void **item);
       
    74 #define fifoNumItems(list) ((list)->numItems)
       
    75 
       
    76 /* LIFO list functions */
       
    77 int lifoOpen(lifo_t *list);
       
    78 int lifoClose(lifo_t *list);
       
    79 int lifoPut(lifo_t *list, void *item);
       
    80 int lifoGet(lifo_t *list, void **item);
       
    81 
       
    82 /* General linked list functions */
       
    83 int lstOpen(lst_t *list);
       
    84 int lstClose(lst_t *list);
       
    85 int lstHead(lst_t *list, void **item);
       
    86 int lstTail(lst_t *list, void **item);
       
    87 int lstEnd(lst_t *list);
       
    88 int lstCurr(lst_t *list, void **item);
       
    89 int lstNext(lst_t *list, void **item);
       
    90 int lstNextExists(lst_t *list);
       
    91 int lstAdd(lst_t *list, void *item);
       
    92 int lstRemove(lst_t *list, void **item);
       
    93 #define lstNumItems(list) ((list)->numItems)
       
    94 
       
    95 #endif
       
    96 // End of File