/***************************************************************************** * vlc_plugin.h : Macros used from within a module. ***************************************************************************** * Copyright (C) 2001-2006 the VideoLAN team * Copyright © 2007-2009 Rémi Denis-Courmont * * Authors: Samuel Hocevar * * 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. *****************************************************************************/ #ifndef LIBVLC_MODULES_MACROS_H # define LIBVLC_MODULES_MACROS_H 1 /** * \file * This file implements plugin (module) macros used to define a vlc module. */ VLC_EXPORT( int, vlc_plugin_set, (module_t *, module_config_t *, int, ...) ); #define vlc_module_set( mod, ... ) vlc_plugin_set ((mod), NULL, __VA_ARGS__) #define vlc_config_set( cfg, ... ) vlc_plugin_set (NULL, (cfg), __VA_ARGS__) enum vlc_module_properties { VLC_SUBMODULE_CREATE, VLC_CONFIG_CREATE, /* DO NOT EVER REMOVE, INSERT OR REPLACE ANY ITEM! It would break the ABI! * Append new items at the end ONLY. */ VLC_MODULE_CPU_REQUIREMENT=0x100, VLC_MODULE_SHORTCUT, VLC_MODULE_CAPABILITY, VLC_MODULE_SCORE, VLC_MODULE_CB_OPEN, VLC_MODULE_CB_CLOSE, VLC_MODULE_NO_UNLOAD, VLC_MODULE_NAME, VLC_MODULE_SHORTNAME, VLC_MODULE_DESCRIPTION, VLC_MODULE_HELP, VLC_MODULE_TEXTDOMAIN, /* Insert new VLC_MODULE_* here */ /* DO NOT EVER REMOVE, INSERT OR REPLACE ANY ITEM! It would break the ABI! * Append new items at the end ONLY. */ VLC_CONFIG_NAME=0x1000, /* command line name (args=const char *, vlc_callback_t) */ VLC_CONFIG_VALUE, /* actual value (args=int/double/const char *) */ VLC_CONFIG_RANGE, /* minimum value (args=int/double/const char * twice) */ VLC_CONFIG_ADVANCED, /* enable advanced flag (args=none) */ VLC_CONFIG_VOLATILE, /* don't write variable to storage (args=none) */ VLC_CONFIG_PERSISTENT, /* always write variable to storage (args=none) */ VLC_CONFIG_RESTART, /* restart required to apply value change (args=none) */ VLC_CONFIG_PRIVATE, /* hide from user (args=none) */ VLC_CONFIG_REMOVED, /* tag as no longer supported (args=none) */ VLC_CONFIG_CAPABILITY, /* capability for a module or list thereof (args=const char*) */ VLC_CONFIG_SHORTCUT, /* one-character (short) command line option name (args=char) */ VLC_CONFIG_OLDNAME, /* former option name (args=const char *) */ VLC_CONFIG_SAFE, /* tag as modifiable by untrusted input item "sources" (args=none) */ VLC_CONFIG_DESC, /* description (args=const char *, const char *, const char *) */ VLC_CONFIG_LIST, /* possible values list * (args=const char *, size_t, const *, const char *const *) */ VLC_CONFIG_ADD_ACTION, /* add value change callback * (args=const char *, vlc_callback_t, const char *) */ /* Insert new VLC_CONFIG_* here */ }; /***************************************************************************** * If we are not within a module, assume we're in the vlc core. *****************************************************************************/ #if !defined( __PLUGIN__ ) && !defined( __BUILTIN__ ) # define MODULE_NAME main #endif /** * Current plugin ABI version */ # define MODULE_SYMBOL 1_1_0g # define MODULE_SUFFIX "__1_1_0g" /***************************************************************************** * Add a few defines. You do not want to read this section. Really. *****************************************************************************/ /* Explanation: * * if linking a module statically, we will need: * #define MODULE_FUNC( zog ) module_foo_zog * * this can't easily be done with the C preprocessor, thus a few ugly hacks. */ /* I need to do _this_ to change « foo bar » to « module_foo_bar » ! */ #define CONCATENATE( y, z ) CRUDE_HACK( y, z ) #define CRUDE_HACK( y, z ) y##__##z /* If the module is built-in, then we need to define foo_InitModule instead * of InitModule. Same for Activate- and DeactivateModule. */ #ifdef __PLUGIN__ # define __VLC_SYMBOL( symbol ) CONCATENATE( symbol, MODULE_SYMBOL ) #else # define __VLC_SYMBOL( symbol ) CONCATENATE( symbol, MODULE_NAME ) #endif #if defined( __PLUGIN__ ) && ( defined( WIN32 ) || defined( UNDER_CE ) ) # define DLL_SYMBOL __declspec(dllexport) # define CDECL_SYMBOL __cdecl #else # define DLL_SYMBOL # define CDECL_SYMBOL #endif #if defined( __cplusplus ) # define EXTERN_SYMBOL extern "C" #else # define EXTERN_SYMBOL #endif /* * InitModule: this function is called once and only once, when the module * is looked at for the first time. We get the useful data from it, for * instance the module name, its shortcuts, its capabilities... we also create * a copy of its config because the module can be unloaded at any time. */ #define vlc_module_begin( ) \ EXTERN_SYMBOL DLL_SYMBOL int CDECL_SYMBOL \ __VLC_SYMBOL(vlc_entry) ( module_t *p_module ); \ \ EXTERN_SYMBOL DLL_SYMBOL int CDECL_SYMBOL \ __VLC_SYMBOL(vlc_entry) ( module_t *p_module ) \ { \ module_config_t *p_config = NULL; \ if (vlc_module_set (p_module, VLC_MODULE_NAME, \ (const char *)(MODULE_STRING))) \ goto error; \ { \ module_t *p_submodule = p_module; #define vlc_module_end( ) \ } \ (void)p_config; \ return VLC_SUCCESS; \ \ error: \ return VLC_EGENERIC; \ } \ VLC_METADATA_EXPORTS #define add_submodule( ) \ if (vlc_plugin_set (p_module, NULL, VLC_SUBMODULE_CREATE, &p_submodule)) \ goto error; #define add_shortcut( shortcut ) \ if (vlc_module_set (p_submodule, VLC_MODULE_SHORTCUT, \ (const char *)(shortcut))) \ goto error; #define set_shortname( shortname ) \ if (vlc_module_set (p_submodule, VLC_MODULE_SHORTNAME, \ (const char *)(shortname))) \ goto error; #define set_description( desc ) \ if (vlc_module_set (p_submodule, VLC_MODULE_DESCRIPTION, \ (const char *)(desc))) \ goto error; #define set_help( help ) \ if (vlc_module_set (p_submodule, VLC_MODULE_HELP, \ (const char *)(help))) \ goto error; #define set_capability( cap, score ) \ if (vlc_module_set (p_submodule, VLC_MODULE_CAPABILITY, \ (const char *)(cap)) \ || vlc_module_set (p_submodule, VLC_MODULE_SCORE, (int)(score))) \ goto error; #define set_callbacks( activate, deactivate ) \ if (vlc_module_set (p_submodule, VLC_MODULE_CB_OPEN, activate) \ || vlc_module_set (p_submodule, VLC_MODULE_CB_CLOSE, deactivate)) \ goto error; #define cannot_unload_broken_library( ) \ if (vlc_module_set (p_submodule, VLC_MODULE_NO_UNLOAD)) \ goto error; #define set_text_domain( dom ) \ if (vlc_module_set (p_module, VLC_MODULE_TEXTDOMAIN, (dom))) \ goto error; /***************************************************************************** * Macros used to build the configuration structure. * * Note that internally we support only 3 types of config data: int, float * and string. * The other types declared here just map to one of these 3 basic types but * have the advantage of also providing very good hints to a configuration * interface so as to make it more user friendly. * The configuration structure also includes category hints. These hints can * provide a configuration interface with some very useful data and again * allow for a more user friendly interface. *****************************************************************************/ #define add_type_inner( type ) \ vlc_plugin_set (p_module, NULL, VLC_CONFIG_CREATE, (type), &p_config); #define add_typedesc_inner( type, text, longtext ) \ add_type_inner( type ) \ vlc_config_set (p_config, VLC_CONFIG_DESC, \ (const char *)(text), (const char *)(longtext)); #define add_typeadv_inner( type, text, longtext, advc ) \ add_typedesc_inner( type, text, longtext ) \ if (advc) vlc_config_set (p_config, VLC_CONFIG_ADVANCED); #define add_typename_inner( type, name, text, longtext, advc, cb ) \ add_typeadv_inner( type, text, longtext, advc ) \ vlc_config_set (p_config, VLC_CONFIG_NAME, \ (const char *)(name), (vlc_callback_t)(cb)); #define add_string_inner( type, name, text, longtext, advc, cb, v ) \ add_typename_inner( type, name, text, longtext, advc, cb ) \ vlc_config_set (p_config, VLC_CONFIG_VALUE, (const char *)(v)); #define add_int_inner( type, name, text, longtext, advc, cb, v ) \ add_typename_inner( type, name, text, longtext, advc, cb ) \ vlc_config_set (p_config, VLC_CONFIG_VALUE, (int)(v)); #define set_category( i_id ) \ add_type_inner( CONFIG_CATEGORY ) \ vlc_config_set (p_config, VLC_CONFIG_VALUE, (int)(i_id)); #define set_subcategory( i_id ) \ add_type_inner( CONFIG_SUBCATEGORY ) \ vlc_config_set (p_config, VLC_CONFIG_VALUE, (int)(i_id)); #define set_section( text, longtext ) \ add_typedesc_inner( CONFIG_SECTION, text, longtext ) #define add_category_hint( text, longtext, advc ) \ add_typeadv_inner( CONFIG_HINT_CATEGORY, text, longtext, advc ) #define add_subcategory_hint( text, longtext ) \ add_typedesc_inner( CONFIG_HINT_SUBCATEGORY, text, longtext ) #define end_subcategory_hint \ add_type_inner( CONFIG_HINT_SUBCATEGORY_END ) #define add_usage_hint( text ) \ add_typedesc_inner( CONFIG_HINT_USAGE, text, NULL ) #define add_string( name, value, p_callback, text, longtext, advc ) \ add_string_inner( CONFIG_ITEM_STRING, name, text, longtext, advc, \ p_callback, value ) #define add_password( name, value, p_callback, text, longtext, advc ) \ add_string_inner( CONFIG_ITEM_PASSWORD, name, text, longtext, advc, \ p_callback, value ) #define add_file( name, value, p_callback, text, longtext, advc ) \ add_string_inner( CONFIG_ITEM_FILE, name, text, longtext, advc, \ p_callback, value ) #define add_directory( name, value, p_callback, text, longtext, advc ) \ add_string_inner( CONFIG_ITEM_DIRECTORY, name, text, longtext, advc, \ p_callback, value ) #define add_font( name, value, p_callback, text, longtext, advc )\ add_string_inner( CONFIG_ITEM_FONT, name, text, longtext, advc, \ p_callback, value ) #define add_module( name, psz_caps, value, p_callback, text, longtext, advc ) \ add_string_inner( CONFIG_ITEM_MODULE, name, text, longtext, advc, \ p_callback, value ) \ vlc_config_set (p_config, VLC_CONFIG_CAPABILITY, (const char *)(psz_caps)); #define add_module_list( name, psz_caps, value, p_callback, text, longtext, advc ) \ add_string_inner( CONFIG_ITEM_MODULE_LIST, name, text, longtext, advc, \ p_callback, value ) \ vlc_config_set (p_config, VLC_CONFIG_CAPABILITY, (const char *)(psz_caps)); #ifndef __PLUGIN__ #define add_module_cat( name, i_subcategory, value, p_callback, text, longtext, advc ) \ add_string_inner( CONFIG_ITEM_MODULE_CAT, name, text, longtext, advc, \ p_callback, value ) \ change_integer_range (i_subcategory /* gruik */, 0); #define add_module_list_cat( name, i_subcategory, value, p_callback, text, longtext, advc ) \ add_string_inner( CONFIG_ITEM_MODULE_LIST_CAT, name, text, longtext, \ advc, p_callback, value ) \ change_integer_range (i_subcategory /* gruik */, 0); #endif #define add_integer( name, value, p_callback, text, longtext, advc ) \ add_int_inner( CONFIG_ITEM_INTEGER, name, text, longtext, advc, \ p_callback, value ) #define add_key( name, value, p_callback, text, longtext, advc ) \ add_int_inner( CONFIG_ITEM_KEY, name, text, longtext, advc, \ p_callback, value ) \ add_int_inner( CONFIG_ITEM_KEY, "global-" name, text, longtext, advc, \ p_callback, KEY_UNSET ) #define add_integer_with_range( name, value, i_min, i_max, p_callback, text, longtext, advc ) \ add_integer( name, value, p_callback, text, longtext, advc ) \ change_integer_range( i_min, i_max ) #define add_float( name, v, p_callback, text, longtext, advc ) \ add_typename_inner( CONFIG_ITEM_FLOAT, name, text, longtext, advc, p_callback ) \ vlc_config_set (p_config, VLC_CONFIG_VALUE, (double)(v)); #define add_float_with_range( name, value, f_min, f_max, p_callback, text, longtext, advc ) \ add_float( name, value, p_callback, text, longtext, advc ) \ change_float_range( f_min, f_max ) #define add_bool( name, v, p_callback, text, longtext, advc ) \ add_typename_inner( CONFIG_ITEM_BOOL, name, text, longtext, advc, \ p_callback ) \ if (v) vlc_config_set (p_config, VLC_CONFIG_VALUE, (int)true); /* For removed option */ #define add_obsolete_inner( name, type ) \ add_type_inner( type ) \ vlc_config_set (p_config, VLC_CONFIG_NAME, \ (const char *)(name), (vlc_callback_t)NULL); \ vlc_config_set (p_config, VLC_CONFIG_REMOVED); #define add_obsolete_bool( name ) \ add_obsolete_inner( name, CONFIG_ITEM_BOOL ) #define add_obsolete_integer( name ) \ add_obsolete_inner( name, CONFIG_ITEM_INTEGER ) #define add_obsolete_float( name ) \ add_obsolete_inner( name, CONFIG_ITEM_FLOAT ) #define add_obsolete_string( name ) \ add_obsolete_inner( name, CONFIG_ITEM_STRING ) /* Modifier macros for the config options (used for fine tuning) */ #define add_deprecated_alias( name ) \ vlc_config_set (p_config, VLC_CONFIG_OLDNAME, (const char *)(name)); #define change_short( ch ) \ vlc_config_set (p_config, VLC_CONFIG_SHORTCUT, (int)(ch)); #define change_string_list( list, list_text, list_update_func ) \ vlc_config_set (p_config, VLC_CONFIG_LIST, \ (size_t)(sizeof (list) / sizeof (char *)), \ (const char *const *)(list), \ (const char *const *)(list_text), \ (vlc_callback_t)(list_update_func)); #define change_integer_list( list, list_text, list_update_func ) \ vlc_config_set (p_config, VLC_CONFIG_LIST, \ (size_t)(sizeof (list) / sizeof (int)), \ (const int *)(list), \ (const char *const *)(list_text), \ (vlc_callback_t)(list_update_func)); #define change_integer_range( minv, maxv ) \ vlc_config_set (p_config, VLC_CONFIG_RANGE, (int)(minv), (int)(maxv)); #define change_float_range( minv, maxv ) \ vlc_config_set (p_config, VLC_CONFIG_RANGE, \ (double)(minv), (double)(maxv)); #define change_action_add( pf_action, text ) \ vlc_config_set (p_config, VLC_CONFIG_ADD_ACTION, \ (vlc_callback_t)(pf_action), (const char *)(text)); #define change_need_restart() \ vlc_config_set (p_config, VLC_CONFIG_RESTART); #define change_autosave() \ vlc_config_set (p_config, VLC_CONFIG_PERSISTENT); /* For options that are saved but hidden from the preferences panel */ #define change_private() \ vlc_config_set (p_config, VLC_CONFIG_PRIVATE); /* For options that cannot be saved in the configuration */ #define change_volatile() \ change_private() \ vlc_config_set (p_config, VLC_CONFIG_VOLATILE); #define change_safe() \ vlc_config_set (p_config, VLC_CONFIG_SAFE); /* Meta data plugin exports */ #define VLC_META_EXPORT( name, value ) \ EXTERN_SYMBOL DLL_SYMBOL const char * CDECL_SYMBOL \ __VLC_SYMBOL(vlc_entry_ ## name) (void); \ EXTERN_SYMBOL DLL_SYMBOL const char * CDECL_SYMBOL \ __VLC_SYMBOL(vlc_entry_ ## name) (void) \ { \ return value; \ } #if defined (__LIBVLC__) # define VLC_COPYRIGHT_EXPORT VLC_META_EXPORT (copyright, \ "\x43\x6f\x70\x79\x72\x69\x67\x68\x74\x20\x28\x43\x29\x20\x74\x68" \ "\x65\x20\x56\x69\x64\x65\x6f\x4c\x41\x4e\x20\x56\x4c\x43\x20\x6d" \ "\x65\x64\x69\x61\x20\x70\x6c\x61\x79\x65\x72\x20\x64\x65\x76\x65" \ "\x6c\x6f\x70\x65\x72\x73" ) #elif !defined (VLC_COPYRIGHT_EXPORT) # define VLC_COPYRIGHT_EXPORT #endif #define VLC_LICENSE_EXPORT VLC_META_EXPORT (license, \ "\x4c\x69\x63\x65\x6e\x73\x65\x64\x20\x75\x6e\x64\x65\x72\x20\x74" \ "\x68\x65\x20\x74\x65\x72\x6d\x73\x20\x6f\x66\x20\x74\x68\x65\x20" \ "\x47\x4e\x55\x20\x47\x65\x6e\x65\x72\x61\x6c\x20\x50\x75\x62\x6c" \ "\x69\x63\x20\x4c\x69\x63\x65\x6e\x73\x65\x2c\x20\x76\x65\x72\x73" \ "\x69\x6f\x6e\x20\x32\x20\x6f\x72\x20\x6c\x61\x74\x65\x72\x2e" ) #define VLC_METADATA_EXPORTS \ VLC_COPYRIGHT_EXPORT \ VLC_LICENSE_EXPORT #endif