modules.h
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上传日期:2009-03-27
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- /*****************************************************************************
- * modules.h : Module management functions.
- *****************************************************************************
- * Copyright (C) 2001 VideoLAN
- * $Id: modules.h 7857 2004-06-01 15:45:07Z gbazin $
- *
- * Authors: Samuel Hocevar <sam@zoy.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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- *****************************************************************************/
- /*****************************************************************************
- * Module #defines.
- *****************************************************************************/
- /* Number of tries before we unload an unused module */
- #define MODULE_HIDE_DELAY 50
- #define MODULE_SHORTCUT_MAX 50
- /* The module handle type. */
- #if defined(HAVE_DL_DYLD)
- # if defined (HAVE_MACH_O_DYLD_H)
- # include <mach-o/dyld.h>
- # endif
- typedef NSModule module_handle_t;
- #elif defined(HAVE_IMAGE_H)
- typedef int module_handle_t;
- #elif defined(WIN32) || defined(UNDER_CE)
- typedef void * module_handle_t;
- #elif defined(HAVE_DL_DLOPEN)
- typedef void * module_handle_t;
- #elif defined(HAVE_DL_SHL_LOAD)
- typedef shl_t module_handle_t;
- #endif
- /*****************************************************************************
- * module_bank_t: the module bank
- *****************************************************************************
- * This variable is accessed by any function using modules.
- *****************************************************************************/
- struct module_bank_t
- {
- VLC_COMMON_MEMBERS
- int i_usage;
- module_symbols_t symbols;
- /* Plugins cache */
- vlc_bool_t b_cache;
- vlc_bool_t b_cache_dirty;
- vlc_bool_t b_cache_delete;
- int i_cache;
- module_cache_t **pp_cache;
- int i_loaded_cache;
- module_cache_t **pp_loaded_cache;
- };
- /*****************************************************************************
- * Module description structure
- *****************************************************************************/
- struct module_t
- {
- VLC_COMMON_MEMBERS
- /*
- * Variables set by the module to identify itself
- */
- char *psz_shortname; /* Module name */
- char *psz_longname; /* Module descriptive name */
- /*
- * Variables set by the module to tell us what it can do
- */
- char *psz_program; /* Program name which will activate the module */
- char *pp_shortcuts[ MODULE_SHORTCUT_MAX ]; /* Shortcuts to the module */
- char *psz_capability; /* Capability */
- int i_score; /* Score for each capability */
- uint32_t i_cpu; /* Required CPU capabilities */
- vlc_bool_t b_unloadable; /* Can we be dlclosed? */
- vlc_bool_t b_reentrant; /* Are we reentrant? */
- vlc_bool_t b_submodule; /* Is this a submodule? */
- /* Callbacks */
- int ( * pf_activate ) ( vlc_object_t * );
- void ( * pf_deactivate ) ( vlc_object_t * );
- /*
- * Variables set by the module to store its config options
- */
- module_config_t *p_config; /* Module configuration structure */
- unsigned int i_config_items; /* number of configuration items */
- unsigned int i_bool_items; /* number of bool config items */
- /*
- * Variables used internally by the module manager
- */
- /* Plugin-specific stuff */
- module_handle_t handle; /* Unique handle */
- char * psz_filename; /* Module filename */
- vlc_bool_t b_builtin; /* Set to true if the module is built in */
- vlc_bool_t b_loaded; /* Set to true if the dll is loaded */
- /*
- * Symbol table we send to the module so that it can access vlc symbols
- */
- module_symbols_t *p_symbols;
- };
- /*****************************************************************************
- * Module cache description structure
- *****************************************************************************/
- struct module_cache_t
- {
- /* Mandatory cache entry header */
- char *psz_file;
- int64_t i_time;
- int64_t i_size;
- vlc_bool_t b_junk;
- /* Optional extra data */
- module_t *p_module;
- };
- /*****************************************************************************
- * Exported functions.
- *****************************************************************************/
- #define module_InitBank(a) __module_InitBank(VLC_OBJECT(a))
- void __module_InitBank ( vlc_object_t * );
- #define module_LoadMain(a) __module_LoadMain(VLC_OBJECT(a))
- void __module_LoadMain ( vlc_object_t * );
- #define module_LoadBuiltins(a) __module_LoadBuiltins(VLC_OBJECT(a))
- void __module_LoadBuiltins ( vlc_object_t * );
- #define module_LoadPlugins(a) __module_LoadPlugins(VLC_OBJECT(a))
- void __module_LoadPlugins ( vlc_object_t * );
- #define module_EndBank(a) __module_EndBank(VLC_OBJECT(a))
- void __module_EndBank ( vlc_object_t * );
- #define module_ResetBank(a) __module_ResetBank(VLC_OBJECT(a))
- void __module_ResetBank ( vlc_object_t * );
- #define module_Need(a,b,c,d) __module_Need(VLC_OBJECT(a),b,c,d)
- VLC_EXPORT( module_t *, __module_Need, ( vlc_object_t *, const char *, const char *, vlc_bool_t ) );
- #define module_Unneed(a,b) __module_Unneed(VLC_OBJECT(a),b)
- VLC_EXPORT( void, __module_Unneed, ( vlc_object_t *, module_t * ) );