dynamicoverlay_list.c
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
上传日期:2020-07-06
资源大小:29949k
文件大小:4k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * dynamicoverlay_list.h : dynamic overlay list
- *****************************************************************************
- * Copyright (C) 2008-2009 the VideoLAN team
- * $Id: 985d3c415fedf04141b9333574e976c069d12b05 $
- *
- * Author: Søren Bøg <avacore@videolan.org>
- * Jean-Paul Saman <jpsaman@videolan.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- #ifdef HAVE_CONFIG_H
- # include "config.h"
- #endif
- #include <vlc_common.h>
- #include <vlc_osd.h>
- #include <fcntl.h>
- #include "dynamicoverlay.h"
- /*****************************************************************************
- * list_t: Command queue
- *****************************************************************************/
- int ListInit( list_t *p_list )
- {
- p_list->pp_head = malloc( 16 * sizeof( overlay_t * ) );
- if( p_list->pp_head == NULL )
- return VLC_ENOMEM;
- p_list->pp_tail = p_list->pp_head + 16;
- memset( p_list->pp_head, 0, 16 * sizeof( overlay_t * ) );
- return VLC_SUCCESS;
- }
- int ListDestroy( list_t *p_list )
- {
- for( overlay_t **pp_cur = p_list->pp_head;
- pp_cur < p_list->pp_tail;
- ++pp_cur )
- {
- if( *pp_cur != NULL )
- {
- OverlayDestroy( *pp_cur );
- free( *pp_cur );
- }
- }
- free( p_list->pp_head );
- return VLC_SUCCESS;
- }
- ssize_t ListAdd( list_t *p_list, overlay_t *p_new )
- {
- /* Find an available slot */
- for( overlay_t **pp_cur = p_list->pp_head;
- pp_cur < p_list->pp_tail;
- ++pp_cur )
- {
- if( *pp_cur == NULL )
- {
- *pp_cur = p_new;
- return pp_cur - p_list->pp_head;
- }
- }
- /* Have to expand */
- size_t i_size = p_list->pp_tail - p_list->pp_head;
- size_t i_newsize = i_size * 2;
- p_list->pp_head = realloc( p_list->pp_head,
- i_newsize * sizeof( overlay_t * ) );
- if( p_list->pp_head == NULL )
- return VLC_ENOMEM;
- p_list->pp_tail = p_list->pp_head + i_newsize;
- memset( p_list->pp_head + i_size, 0, i_size * sizeof( overlay_t * ) );
- p_list->pp_head[i_size] = p_new;
- return i_size;
- }
- int ListRemove( list_t *p_list, size_t i_idx )
- {
- int ret;
- if( ( i_idx >= (size_t)( p_list->pp_tail - p_list->pp_head ) ) ||
- ( p_list->pp_head[i_idx] == NULL ) )
- {
- return VLC_EGENERIC;
- }
- ret = OverlayDestroy( p_list->pp_head[i_idx] );
- free( p_list->pp_head[i_idx] );
- p_list->pp_head[i_idx] = NULL;
- return ret;
- }
- overlay_t *ListGet( list_t *p_list, size_t i_idx )
- {
- if( ( i_idx >= (size_t)( p_list->pp_tail - p_list->pp_head ) ) ||
- ( p_list->pp_head[i_idx] == NULL ) )
- {
- return NULL;
- }
- return p_list->pp_head[i_idx];
- }
- overlay_t *ListWalk( list_t *p_list )
- {
- static overlay_t **pp_cur = NULL;
- if( pp_cur == NULL )
- pp_cur = p_list->pp_head;
- else
- pp_cur = pp_cur + 1;
- for( ; pp_cur < p_list->pp_tail; ++pp_cur )
- {
- if( ( *pp_cur != NULL ) &&
- ( (*pp_cur)->b_active == true )&&
- ( (*pp_cur)->format.i_chroma != VLC_FOURCC( ' ',' ',' ',' ') ) )
- {
- return *pp_cur;
- }
- }
- pp_cur = NULL;
- return NULL;
- }