1 /*****************************************************************************
2 * dynamicoverlay_list.c : dynamic overlay list
3 *****************************************************************************
4 * Copyright (C) 2008-2009 VLC authors and VideoLAN
7 * Author: Søren Bøg <avacore@videolan.org>
8 * Jean-Paul Saman <jpsaman@videolan.org>
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU Lesser General Public License as published by
12 * the Free Software Foundation; either version 2.1 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU Lesser General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public License
21 * along with this program; if not, write to the Free Software Foundation,
22 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
29 #include <vlc_common.h>
30 #include <vlc_memory.h>
32 #include "dynamicoverlay.h"
34 /*****************************************************************************
35 * list_t: Command queue
36 *****************************************************************************/
38 int do_ListInit( list_t *p_list )
40 p_list->pp_head = calloc( 16, sizeof( overlay_t * ) );
41 if( p_list->pp_head == NULL )
44 p_list->pp_tail = p_list->pp_head + 16;
48 int do_ListDestroy( list_t *p_list )
50 for( overlay_t **pp_cur = p_list->pp_head;
51 pp_cur < p_list->pp_tail;
56 OverlayDestroy( *pp_cur );
60 free( p_list->pp_head );
65 ssize_t ListAdd( list_t *p_list, overlay_t *p_new )
67 /* Find an available slot */
68 for( overlay_t **pp_cur = p_list->pp_head;
69 pp_cur < p_list->pp_tail;
75 return pp_cur - p_list->pp_head;
80 size_t i_size = p_list->pp_tail - p_list->pp_head;
81 size_t i_newsize = i_size * 2;
82 p_list->pp_head = realloc_or_free( p_list->pp_head,
83 i_newsize * sizeof( overlay_t * ) );
84 if( p_list->pp_head == NULL )
87 p_list->pp_tail = p_list->pp_head + i_newsize;
88 memset( p_list->pp_head + i_size, 0, i_size * sizeof( overlay_t * ) );
89 p_list->pp_head[i_size] = p_new;
93 int ListRemove( list_t *p_list, size_t i_idx )
97 if( ( i_idx >= (size_t)( p_list->pp_tail - p_list->pp_head ) ) ||
98 ( p_list->pp_head[i_idx] == NULL ) )
103 ret = OverlayDestroy( p_list->pp_head[i_idx] );
104 free( p_list->pp_head[i_idx] );
105 p_list->pp_head[i_idx] = NULL;
110 overlay_t *ListGet( list_t *p_list, size_t i_idx )
112 if( ( i_idx >= (size_t)( p_list->pp_tail - p_list->pp_head ) ) ||
113 ( p_list->pp_head[i_idx] == NULL ) )
117 return p_list->pp_head[i_idx];
120 overlay_t *ListWalk( list_t *p_list )
122 static overlay_t **pp_cur = NULL;
125 pp_cur = p_list->pp_head;
129 for( ; pp_cur < p_list->pp_tail; ++pp_cur )
131 if( ( *pp_cur != NULL ) &&
132 ( (*pp_cur)->b_active )&&
133 ( (*pp_cur)->format.i_chroma != VLC_FOURCC( '\0','\0','\0','\0') ) )