1 /*****************************************************************************
2 * vlc_plugin.h : Macros used from within a module.
3 *****************************************************************************
4 * Copyright (C) 2001-2006 the VideoLAN team
5 * Copyright © 2007-2008 Rémi Denis-Courmont
7 * Authors: Samuel Hocevar <sam@zoy.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 #ifndef LIBVLC_MODULES_MACROS_H
25 # define LIBVLC_MODULES_MACROS_H 1
27 /*****************************************************************************
28 * If we are not within a module, assume we're in the vlc core.
29 *****************************************************************************/
30 #if !defined( __PLUGIN__ ) && !defined( __BUILTIN__ )
31 # define MODULE_NAME main
35 * Current plugin ABI version
37 # define MODULE_SYMBOL 0_9_0k
38 # define MODULE_SUFFIX "__0_9_0k"
40 /*****************************************************************************
41 * Add a few defines. You do not want to read this section. Really.
42 *****************************************************************************/
46 * if linking a module statically, we will need:
47 * #define MODULE_FUNC( zog ) module_foo_zog
49 * this can't easily be done with the C preprocessor, thus a few ugly hacks.
52 /* I need to do _this_ to change « foo bar » to « module_foo_bar » ! */
53 #define CONCATENATE( y, z ) CRUDE_HACK( y, z )
54 #define CRUDE_HACK( y, z ) y##__##z
56 /* If the module is built-in, then we need to define foo_InitModule instead
57 * of InitModule. Same for Activate- and DeactivateModule. */
59 # define E_( function ) CONCATENATE( function, MODULE_SYMBOL )
60 # define __VLC_SYMBOL( symbol ) CONCATENATE( symbol, MODULE_SYMBOL )
62 # define E_( function ) CONCATENATE( function, MODULE_NAME )
63 # define __VLC_SYMBOL( symbol ) CONCATENATE( symbol, MODULE_NAME )
66 #if defined( __PLUGIN__ ) && ( defined( WIN32 ) || defined( UNDER_CE ) )
67 # define DLL_SYMBOL __declspec(dllexport)
68 # define CDECL_SYMBOL __cdecl
74 #if defined( __cplusplus )
75 # define EXTERN_SYMBOL extern "C"
77 # define EXTERN_SYMBOL
81 * InitModule: this function is called once and only once, when the module
82 * is looked at for the first time. We get the useful data from it, for
83 * instance the module name, its shortcuts, its capabilities... we also create
84 * a copy of its config because the module can be unloaded at any time.
86 #if defined (__PLUGIN__) || defined (__BUILTIN__)
87 EXTERN_SYMBOL DLL_SYMBOL int CDECL_SYMBOL
88 E_(vlc_entry) ( module_t *p_module );
91 #define vlc_module_begin( ) \
92 EXTERN_SYMBOL DLL_SYMBOL int CDECL_SYMBOL \
93 __VLC_SYMBOL(vlc_entry) ( module_t *p_module ) \
95 module_config_t *p_config = NULL; \
96 const char *domain = NULL; \
97 if (vlc_module_set (p_module, VLC_MODULE_NAME, \
98 (const char *)(MODULE_STRING))) \
101 module_t *p_submodule = p_module;
103 #define vlc_module_end( ) \
106 return VLC_SUCCESS; \
109 return VLC_EGENERIC; \
113 #define add_submodule( ) \
114 p_submodule = vlc_submodule_create( p_module );
116 #define add_requirement( cap ) \
117 if (vlc_module_set (p_module, VLC_MODULE_CPU_REQUIREMENT, \
118 (int)(CPU_CAPABILITY_##cap))) \
121 #define add_shortcut( shortcut ) \
122 if (vlc_module_set (p_submodule, VLC_MODULE_SHORTCUT, \
123 (const char *)(shortcut))) \
126 #define set_shortname( shortname ) \
127 if (vlc_module_set (p_submodule, VLC_MODULE_SHORTNAME, domain, \
128 (const char *)(shortname))) \
131 #define set_description( desc ) \
132 if (vlc_module_set (p_submodule, VLC_MODULE_DESCRIPTION, domain, \
133 (const char *)(desc))) \
136 #define set_help( help ) \
137 if (vlc_module_set (p_submodule, VLC_MODULE_HELP, domain, \
138 (const char *)(help))) \
141 #define set_capability( cap, score ) \
142 if (vlc_module_set (p_submodule, VLC_MODULE_CAPABILITY, \
143 (const char *)(cap)) \
144 || vlc_module_set (p_submodule, VLC_MODULE_SCORE, (int)(score))) \
147 #define set_callbacks( activate, deactivate ) \
148 if (vlc_module_set (p_submodule, VLC_MODULE_CB_OPEN, activate) \
149 || vlc_module_set (p_submodule, VLC_MODULE_CB_CLOSE, deactivate)) \
152 #define linked_with_a_crap_library_which_uses_atexit( ) \
153 if (vlc_module_set (p_submodule, VLC_MODULE_NO_UNLOAD)) \
156 #define set_text_domain( dom ) domain = (dom);
158 VLC_EXPORT( module_t *, vlc_module_create, ( vlc_object_t * ) );
159 VLC_EXPORT( module_t *, vlc_submodule_create, ( module_t * ) );
160 VLC_EXPORT( int, vlc_module_set, (module_t *module, int propid, ...) );
161 VLC_EXPORT( module_config_t *, vlc_config_create, (module_t *, int type) );
162 VLC_EXPORT( int, vlc_config_set, (module_config_t *, int, ...) );
164 enum vlc_module_properties
166 /* DO NOT EVER REMOVE, INSERT OR REPLACE ANY ITEM! It would break the ABI!
167 * Append new items at the end ONLY. */
168 VLC_MODULE_CPU_REQUIREMENT,
170 VLC_MODULE_SHORTNAME_NODOMAIN,
171 VLC_MODULE_DESCRIPTION_NODOMAIN,
172 VLC_MODULE_HELP_NODOMAIN,
173 VLC_MODULE_CAPABILITY,
175 VLC_MODULE_PROGRAM, /* obsoleted */
178 VLC_MODULE_NO_UNLOAD,
180 VLC_MODULE_SHORTNAME,
181 VLC_MODULE_DESCRIPTION,
185 enum vlc_config_properties
187 /* DO NOT EVER REMOVE, INSERT OR REPLACE ANY ITEM! It would break the ABI!
188 * Append new items at the end ONLY. */
191 /* command line name (args=const char *, vlc_callback_t) */
193 VLC_CONFIG_DESC_NODOMAIN,
194 /* description (args=const char *, const char *) */
197 /* actual value (args=int/double/const char *) */
200 /* minimum value (args=int/double/const char * twice) */
203 /* enable advanced flag (args=none) */
206 /* don't write variable to storage (args=none) */
208 VLC_CONFIG_PERSISTENT,
209 /* always write variable to storage (args=none) */
212 /* restart required to apply value change (args=none) */
215 /* hide from user (args=none) */
218 /* tag as no longer supported (args=none) */
220 VLC_CONFIG_CAPABILITY,
221 /* capability for a module or list thereof (args=const char*) */
224 /* one-character (short) command line option name (args=char) */
226 VLC_CONFIG_LIST_NODOMAIN,
227 /* possible values list
228 * (args=size_t, const <type> *, const char *const *) */
230 VLC_CONFIG_ADD_ACTION_NODOMAIN,
231 /* add value change callback (args=vlc_callback_t, const char *) */
234 /* former option name (args=const char *) */
237 /* tag as modifiable by untrusted input item "sources" (args=none) */
240 /* description (args=const char *, const char *, const char *) */
243 /* possible values list
244 * (args=const char *, size_t, const <type> *, const char *const *) */
246 VLC_CONFIG_ADD_ACTION,
247 /* add value change callback
248 * (args=const char *, vlc_callback_t, const char *) */
251 /*****************************************************************************
252 * Macros used to build the configuration structure.
254 * Note that internally we support only 3 types of config data: int, float
256 * The other types declared here just map to one of these 3 basic types but
257 * have the advantage of also providing very good hints to a configuration
258 * interface so as to make it more user friendly.
259 * The configuration structure also includes category hints. These hints can
260 * provide a configuration interface with some very useful data and again
261 * allow for a more user friendly interface.
262 *****************************************************************************/
264 #define add_type_inner( type ) \
265 p_config = vlc_config_create (p_module, type);
267 #define add_typedesc_inner( type, text, longtext ) \
268 add_type_inner( type ) \
269 vlc_config_set (p_config, VLC_CONFIG_DESC, domain, \
270 (const char *)(text), (const char *)(longtext));
272 #define add_typeadv_inner( type, text, longtext, advc ) \
273 add_typedesc_inner( type, text, longtext ) \
274 if (advc) vlc_config_set (p_config, VLC_CONFIG_ADVANCED);
276 #define add_typename_inner( type, name, text, longtext, advc, cb ) \
277 add_typeadv_inner( type, text, longtext, advc ) \
278 vlc_config_set (p_config, VLC_CONFIG_NAME, \
279 (const char *)(name), (vlc_callback_t)(cb));
281 #define add_string_inner( type, name, text, longtext, advc, cb, v ) \
282 add_typename_inner( type, name, text, longtext, advc, cb ) \
283 vlc_config_set (p_config, VLC_CONFIG_VALUE, (const char *)(v));
285 #define add_int_inner( type, name, text, longtext, advc, cb, v ) \
286 add_typename_inner( type, name, text, longtext, advc, cb ) \
287 vlc_config_set (p_config, VLC_CONFIG_VALUE, (int)(v));
290 #define set_category( i_id ) \
291 add_type_inner( CONFIG_CATEGORY ) \
292 vlc_config_set (p_config, VLC_CONFIG_VALUE, (int)(i_id));
294 #define set_subcategory( i_id ) \
295 add_type_inner( CONFIG_SUBCATEGORY ) \
296 vlc_config_set (p_config, VLC_CONFIG_VALUE, (int)(i_id));
298 #define set_section( text, longtext ) \
299 add_typedesc_inner( CONFIG_SECTION, text, longtext )
301 #define add_category_hint( text, longtext, advc ) \
302 add_typeadv_inner( CONFIG_HINT_CATEGORY, text, longtext, advc )
304 #define add_subcategory_hint( text, longtext ) \
305 add_typedesc_inner( CONFIG_HINT_SUBCATEGORY, text, longtext )
307 #define end_subcategory_hint \
308 add_type_inner( CONFIG_HINT_SUBCATEGORY_END )
310 #define add_usage_hint( text ) \
311 add_typedesc_inner( CONFIG_HINT_USAGE, text, NULL )
313 #define add_string( name, value, p_callback, text, longtext, advc ) \
314 add_string_inner( CONFIG_ITEM_STRING, name, text, longtext, advc, \
317 #define add_password( name, value, p_callback, text, longtext, advc ) \
318 add_string_inner( CONFIG_ITEM_PASSWORD, name, text, longtext, advc, \
321 #define add_file( name, value, p_callback, text, longtext, advc ) \
322 add_string_inner( CONFIG_ITEM_FILE, name, text, longtext, advc, \
325 #define add_directory( name, value, p_callback, text, longtext, advc ) \
326 add_string_inner( CONFIG_ITEM_DIRECTORY, name, text, longtext, advc, \
329 #define add_module( name, psz_caps, value, p_callback, text, longtext, advc ) \
330 add_string_inner( CONFIG_ITEM_MODULE, name, text, longtext, advc, \
331 p_callback, value ) \
332 vlc_config_set (p_config, VLC_CONFIG_CAPABILITY, (const char *)(psz_caps));
334 #define add_module_list( name, psz_caps, value, p_callback, text, longtext, advc ) \
335 add_string_inner( CONFIG_ITEM_MODULE_LIST, name, text, longtext, advc, \
336 p_callback, value ) \
337 vlc_config_set (p_config, VLC_CONFIG_CAPABILITY, (const char *)(psz_caps));
340 #define add_module_cat( name, i_subcategory, value, p_callback, text, longtext, advc ) \
341 add_string_inner( CONFIG_ITEM_MODULE_CAT, name, text, longtext, advc, \
342 p_callback, value ) \
343 p_config->min.i = i_subcategory /* gruik */;
345 #define add_module_list_cat( name, i_subcategory, value, p_callback, text, longtext, advc ) \
346 add_string_inner( CONFIG_ITEM_MODULE_LIST_CAT, name, text, longtext, \
347 advc, p_callback, value ) \
348 p_config->min.i = i_subcategory /* gruik */;
351 #define add_integer( name, value, p_callback, text, longtext, advc ) \
352 add_int_inner( CONFIG_ITEM_INTEGER, name, text, longtext, advc, \
355 #define add_key( name, value, p_callback, text, longtext, advc ) \
356 add_int_inner( CONFIG_ITEM_KEY, name, text, longtext, advc, p_callback, \
359 #define add_integer_with_range( name, value, i_min, i_max, p_callback, text, longtext, advc ) \
360 add_integer( name, value, p_callback, text, longtext, advc ) \
361 change_integer_range( i_min, i_max )
363 #define add_float( name, v, p_callback, text, longtext, advc ) \
364 add_typename_inner( CONFIG_ITEM_FLOAT, name, text, longtext, advc, p_callback ) \
365 vlc_config_set (p_config, VLC_CONFIG_VALUE, (double)(v));
367 #define add_float_with_range( name, value, f_min, f_max, p_callback, text, longtext, advc ) \
368 add_float( name, value, p_callback, text, longtext, advc ) \
369 change_float_range( f_min, f_max )
371 #define add_bool( name, v, p_callback, text, longtext, advc ) \
372 add_typename_inner( CONFIG_ITEM_BOOL, name, text, longtext, advc, \
374 if (v) vlc_config_set (p_config, VLC_CONFIG_VALUE, (int)true);
376 /* For removed option */
377 #define add_obsolete_inner( name, type ) \
378 add_type_inner( type ) \
379 vlc_config_set (p_config, VLC_CONFIG_NAME, \
380 (const char *)(name), (vlc_callback_t)NULL); \
381 vlc_config_set (p_config, VLC_CONFIG_REMOVED);
383 #define add_obsolete_bool( name ) \
384 add_obsolete_inner( name, CONFIG_ITEM_BOOL )
386 #define add_obsolete_integer( name ) \
387 add_obsolete_inner( name, CONFIG_ITEM_INTEGER )
389 #define add_obsolete_float( name ) \
390 add_obsolete_inner( name, CONFIG_ITEM_FLOAT )
392 #define add_obsolete_string( name ) \
393 add_obsolete_inner( name, CONFIG_ITEM_STRING )
395 /* Modifier macros for the config options (used for fine tuning) */
397 #define add_deprecated_alias( name ) \
398 vlc_config_set (p_config, VLC_CONFIG_OLDNAME, (const char *)(name))
400 #define change_short( ch ) \
401 vlc_config_set (p_config, VLC_CONFIG_SHORTCUT, (int)(ch));
403 #define change_string_list( list, list_text, list_update_func ) \
404 vlc_config_set (p_config, VLC_CONFIG_LIST, domain, \
405 (size_t)(sizeof (list) / sizeof (char *)), \
406 (const char *const *)(list), \
407 (const char *const *)(list_text), \
410 #define change_integer_list( list, list_text, list_update_func ) \
411 vlc_config_set (p_config, VLC_CONFIG_LIST, domain, \
412 (size_t)(sizeof (list) / sizeof (int)), \
413 (const int *)(list), \
414 (const char *const *)(list_text), \
417 #define change_float_list( list, list_text, list_update_func ) \
418 vlc_config_set (p_config, VLC_CONFIG_LIST, domain, \
419 (size_t)(sizeof (list) / sizeof (float)), \
420 (const float *)(list), \
421 (const char *const *)(list_text), \
424 #define change_integer_range( minv, maxv ) \
425 vlc_config_set (p_config, VLC_CONFIG_RANGE, (int)(minv), (int)(maxv));
427 #define change_float_range( minv, maxv ) \
428 vlc_config_set (p_config, VLC_CONFIG_RANGE, \
429 (double)(minv), (double)(maxv));
431 #define change_action_add( pf_action, text ) \
432 vlc_config_set (p_config, VLC_CONFIG_ADD_ACTION, domain, \
433 (vlc_callback_t)(pf_action), (const char *)(text));
435 #define change_internal() \
436 vlc_config_set (p_config, VLC_CONFIG_PRIVATE);
438 #define change_need_restart() \
439 vlc_config_set (p_config, VLC_CONFIG_RESTART);
441 #define change_autosave() \
442 vlc_config_set (p_config, VLC_CONFIG_PERSISTENT);
444 #define change_unsaveable() \
445 vlc_config_set (p_config, VLC_CONFIG_VOLATILE);
447 #define change_unsafe() (void)0; /* no-op */
449 #define change_safe() \
450 vlc_config_set (p_config, VLC_CONFIG_SAFE);
452 /* Meta data plugin exports */
453 #define VLC_META_EXPORT( name, value ) \
454 EXTERN_SYMBOL DLL_SYMBOL const char * CDECL_SYMBOL \
455 __VLC_SYMBOL(vlc_entry_ ## name) (void) \
460 #if defined (__LIBVLC__)
461 # define VLC_COPYRIGHT_EXPORT VLC_META_EXPORT (copyright, COPYRIGHT_MESSAGE)
462 #elif !defined (VLC_COPYRIGHT_EXPORT)
463 # define VLC_COPYRIGHT_EXPORT
465 #define VLC_LICENSE_EXPORT VLC_META_EXPORT (license, \
466 "Licensed under the terms of the GNU General Public License, " \
467 "version 2 or later.")
469 #define VLC_METADATA_EXPORTS \
470 VLC_COPYRIGHT_EXPORT \