1 /*****************************************************************************
2 * dynamicoverlay_list.h : dynamic overlay list
3 *****************************************************************************
4 * Copyright (C) 2008-2009 the VideoLAN team
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
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 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 General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
29 #include <vlc_common.h>
31 #include <vlc_memory.h>
33 #include "dynamicoverlay.h"
35 /*****************************************************************************
36 * list_t: Command queue
37 *****************************************************************************/
39 int ListInit( list_t *p_list )
41 p_list->pp_head = calloc( 16, sizeof( overlay_t * ) );
42 if( p_list->pp_head == NULL )
45 p_list->pp_tail = p_list->pp_head + 16;
49 int ListDestroy( list_t *p_list )
51 for( overlay_t **pp_cur = p_list->pp_head;
52 pp_cur < p_list->pp_tail;
57 OverlayDestroy( *pp_cur );
61 free( p_list->pp_head );
66 ssize_t ListAdd( list_t *p_list, overlay_t *p_new )
68 /* Find an available slot */
69 for( overlay_t **pp_cur = p_list->pp_head;
70 pp_cur < p_list->pp_tail;
76 return pp_cur - p_list->pp_head;
81 size_t i_size = p_list->pp_tail - p_list->pp_head;
82 size_t i_newsize = i_size * 2;
83 p_list->pp_head = realloc_or_free( p_list->pp_head,
84 i_newsize * sizeof( overlay_t * ) );
85 if( p_list->pp_head == NULL )
88 p_list->pp_tail = p_list->pp_head + i_newsize;
89 memset( p_list->pp_head + i_size, 0, i_size * sizeof( overlay_t * ) );
90 p_list->pp_head[i_size] = p_new;
94 int ListRemove( list_t *p_list, size_t i_idx )
98 if( ( i_idx >= (size_t)( p_list->pp_tail - p_list->pp_head ) ) ||
99 ( p_list->pp_head[i_idx] == NULL ) )
104 ret = OverlayDestroy( p_list->pp_head[i_idx] );
105 free( p_list->pp_head[i_idx] );
106 p_list->pp_head[i_idx] = NULL;
111 overlay_t *ListGet( list_t *p_list, size_t i_idx )
113 if( ( i_idx >= (size_t)( p_list->pp_tail - p_list->pp_head ) ) ||
114 ( p_list->pp_head[i_idx] == NULL ) )
118 return p_list->pp_head[i_idx];
121 overlay_t *ListWalk( list_t *p_list )
123 static overlay_t **pp_cur = NULL;
126 pp_cur = p_list->pp_head;
130 for( ; pp_cur < p_list->pp_tail; ++pp_cur )
132 if( ( *pp_cur != NULL ) &&
133 ( (*pp_cur)->b_active == true )&&
134 ( (*pp_cur)->format.i_chroma != VLC_FOURCC( '\0','\0','\0','\0') ) )