1 /*****************************************************************************
2 * vlc_plugin.h : Macros used from within a module.
3 *****************************************************************************
4 * Copyright (C) 2001-2006 the VideoLAN team
5 * Copyright © 2007-2009 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
29 * This file implements plugin (module) macros used to define a vlc module.
32 VLC_EXPORT( module_t *, vlc_module_create, ( vlc_object_t * ) );
33 VLC_EXPORT( module_t *, vlc_submodule_create, ( module_t * ) );
34 VLC_EXPORT( int, vlc_module_set, (module_t *module, int propid, ...) );
35 VLC_EXPORT( module_config_t *, vlc_config_create, (module_t *, int type) );
36 VLC_EXPORT( int, vlc_config_set, (module_config_t *, int, ...) );
38 enum vlc_module_properties
40 /* DO NOT EVER REMOVE, INSERT OR REPLACE ANY ITEM! It would break the ABI!
41 * Append new items at the end ONLY. */
42 VLC_MODULE_CPU_REQUIREMENT,
44 VLC_MODULE_CAPABILITY,
51 VLC_MODULE_DESCRIPTION,
55 enum vlc_config_properties
57 /* DO NOT EVER REMOVE, INSERT OR REPLACE ANY ITEM! It would break the ABI!
58 * Append new items at the end ONLY. */
61 /* command line name (args=const char *, vlc_callback_t) */
64 /* actual value (args=int/double/const char *) */
67 /* minimum value (args=int/double/const char * twice) */
70 /* enable advanced flag (args=none) */
73 /* don't write variable to storage (args=none) */
75 VLC_CONFIG_PERSISTENT,
76 /* always write variable to storage (args=none) */
79 /* restart required to apply value change (args=none) */
82 /* hide from user (args=none) */
85 /* tag as no longer supported (args=none) */
87 VLC_CONFIG_CAPABILITY,
88 /* capability for a module or list thereof (args=const char*) */
91 /* one-character (short) command line option name (args=char) */
94 /* former option name (args=const char *) */
97 /* tag as modifiable by untrusted input item "sources" (args=none) */
100 /* description (args=const char *, const char *, const char *) */
103 /* possible values list
104 * (args=const char *, size_t, const <type> *, const char *const *) */
106 VLC_CONFIG_ADD_ACTION,
107 /* add value change callback
108 * (args=const char *, vlc_callback_t, const char *) */
111 /*****************************************************************************
112 * If we are not within a module, assume we're in the vlc core.
113 *****************************************************************************/
114 #if !defined( __PLUGIN__ ) && !defined( __BUILTIN__ )
115 # define MODULE_NAME main
119 * Current plugin ABI version
121 # define MODULE_SYMBOL 1_0_0d
122 # define MODULE_SUFFIX "__1_0_0d"
124 /*****************************************************************************
125 * Add a few defines. You do not want to read this section. Really.
126 *****************************************************************************/
130 * if linking a module statically, we will need:
131 * #define MODULE_FUNC( zog ) module_foo_zog
133 * this can't easily be done with the C preprocessor, thus a few ugly hacks.
136 /* I need to do _this_ to change « foo bar » to « module_foo_bar » ! */
137 #define CONCATENATE( y, z ) CRUDE_HACK( y, z )
138 #define CRUDE_HACK( y, z ) y##__##z
140 /* If the module is built-in, then we need to define foo_InitModule instead
141 * of InitModule. Same for Activate- and DeactivateModule. */
143 # define __VLC_SYMBOL( symbol ) CONCATENATE( symbol, MODULE_SYMBOL )
145 # define __VLC_SYMBOL( symbol ) CONCATENATE( symbol, MODULE_NAME )
148 #if defined( __PLUGIN__ ) && ( defined( WIN32 ) || defined( UNDER_CE ) )
149 # define DLL_SYMBOL __declspec(dllexport)
150 # define CDECL_SYMBOL __cdecl
153 # define CDECL_SYMBOL
156 #if defined( __cplusplus )
157 # define EXTERN_SYMBOL extern "C"
159 # define EXTERN_SYMBOL
163 * InitModule: this function is called once and only once, when the module
164 * is looked at for the first time. We get the useful data from it, for
165 * instance the module name, its shortcuts, its capabilities... we also create
166 * a copy of its config because the module can be unloaded at any time.
168 #define vlc_module_begin( ) \
169 EXTERN_SYMBOL DLL_SYMBOL int CDECL_SYMBOL \
170 __VLC_SYMBOL(vlc_entry) ( module_t *p_module ); \
172 EXTERN_SYMBOL DLL_SYMBOL int CDECL_SYMBOL \
173 __VLC_SYMBOL(vlc_entry) ( module_t *p_module ) \
175 module_config_t *p_config = NULL; \
176 const char *domain = NULL; \
177 if (vlc_module_set (p_module, VLC_MODULE_NAME, \
178 (const char *)(MODULE_STRING))) \
181 module_t *p_submodule = p_module;
183 #define vlc_module_end( ) \
186 return VLC_SUCCESS; \
189 return VLC_EGENERIC; \
193 #define add_submodule( ) \
194 p_submodule = vlc_submodule_create( p_module );
196 #define add_requirement( cap ) \
197 if (vlc_module_set (p_module, VLC_MODULE_CPU_REQUIREMENT, \
198 (int)(CPU_CAPABILITY_##cap))) \
201 #define add_shortcut( shortcut ) \
202 if (vlc_module_set (p_submodule, VLC_MODULE_SHORTCUT, \
203 (const char *)(shortcut))) \
206 #define set_shortname( shortname ) \
207 if (vlc_module_set (p_submodule, VLC_MODULE_SHORTNAME, domain, \
208 (const char *)(shortname))) \
211 #define set_description( desc ) \
212 if (vlc_module_set (p_submodule, VLC_MODULE_DESCRIPTION, domain, \
213 (const char *)(desc))) \
216 #define set_help( help ) \
217 if (vlc_module_set (p_submodule, VLC_MODULE_HELP, domain, \
218 (const char *)(help))) \
221 #define set_capability( cap, score ) \
222 if (vlc_module_set (p_submodule, VLC_MODULE_CAPABILITY, \
223 (const char *)(cap)) \
224 || vlc_module_set (p_submodule, VLC_MODULE_SCORE, (int)(score))) \
227 #define set_callbacks( activate, deactivate ) \
228 if (vlc_module_set (p_submodule, VLC_MODULE_CB_OPEN, activate) \
229 || vlc_module_set (p_submodule, VLC_MODULE_CB_CLOSE, deactivate)) \
232 #define linked_with_a_crap_library_which_uses_atexit( ) \
233 if (vlc_module_set (p_submodule, VLC_MODULE_NO_UNLOAD)) \
236 #define set_text_domain( dom ) domain = (dom);
238 /*****************************************************************************
239 * Macros used to build the configuration structure.
241 * Note that internally we support only 3 types of config data: int, float
243 * The other types declared here just map to one of these 3 basic types but
244 * have the advantage of also providing very good hints to a configuration
245 * interface so as to make it more user friendly.
246 * The configuration structure also includes category hints. These hints can
247 * provide a configuration interface with some very useful data and again
248 * allow for a more user friendly interface.
249 *****************************************************************************/
251 #define add_type_inner( type ) \
252 p_config = vlc_config_create (p_module, type);
254 #define add_typedesc_inner( type, text, longtext ) \
255 add_type_inner( type ) \
256 vlc_config_set (p_config, VLC_CONFIG_DESC, domain, \
257 (const char *)(text), (const char *)(longtext));
259 #define add_typeadv_inner( type, text, longtext, advc ) \
260 add_typedesc_inner( type, text, longtext ) \
261 if (advc) vlc_config_set (p_config, VLC_CONFIG_ADVANCED);
263 #define add_typename_inner( type, name, text, longtext, advc, cb ) \
264 add_typeadv_inner( type, text, longtext, advc ) \
265 vlc_config_set (p_config, VLC_CONFIG_NAME, \
266 (const char *)(name), (vlc_callback_t)(cb));
268 #define add_string_inner( type, name, text, longtext, advc, cb, v ) \
269 add_typename_inner( type, name, text, longtext, advc, cb ) \
270 vlc_config_set (p_config, VLC_CONFIG_VALUE, (const char *)(v));
272 #define add_int_inner( type, name, text, longtext, advc, cb, v ) \
273 add_typename_inner( type, name, text, longtext, advc, cb ) \
274 vlc_config_set (p_config, VLC_CONFIG_VALUE, (int)(v));
277 #define set_category( i_id ) \
278 add_type_inner( CONFIG_CATEGORY ) \
279 vlc_config_set (p_config, VLC_CONFIG_VALUE, (int)(i_id));
281 #define set_subcategory( i_id ) \
282 add_type_inner( CONFIG_SUBCATEGORY ) \
283 vlc_config_set (p_config, VLC_CONFIG_VALUE, (int)(i_id));
285 #define set_section( text, longtext ) \
286 add_typedesc_inner( CONFIG_SECTION, text, longtext )
288 #define add_category_hint( text, longtext, advc ) \
289 add_typeadv_inner( CONFIG_HINT_CATEGORY, text, longtext, advc )
291 #define add_subcategory_hint( text, longtext ) \
292 add_typedesc_inner( CONFIG_HINT_SUBCATEGORY, text, longtext )
294 #define end_subcategory_hint \
295 add_type_inner( CONFIG_HINT_SUBCATEGORY_END )
297 #define add_usage_hint( text ) \
298 add_typedesc_inner( CONFIG_HINT_USAGE, text, NULL )
300 #define add_string( name, value, p_callback, text, longtext, advc ) \
301 add_string_inner( CONFIG_ITEM_STRING, name, text, longtext, advc, \
304 #define add_password( name, value, p_callback, text, longtext, advc ) \
305 add_string_inner( CONFIG_ITEM_PASSWORD, name, text, longtext, advc, \
308 #define add_file( name, value, p_callback, text, longtext, advc ) \
309 add_string_inner( CONFIG_ITEM_FILE, name, text, longtext, advc, \
312 #define add_directory( name, value, p_callback, text, longtext, advc ) \
313 add_string_inner( CONFIG_ITEM_DIRECTORY, name, text, longtext, advc, \
316 #define add_module( name, psz_caps, value, p_callback, text, longtext, advc ) \
317 add_string_inner( CONFIG_ITEM_MODULE, name, text, longtext, advc, \
318 p_callback, value ) \
319 vlc_config_set (p_config, VLC_CONFIG_CAPABILITY, (const char *)(psz_caps));
321 #define add_module_list( name, psz_caps, value, p_callback, text, longtext, advc ) \
322 add_string_inner( CONFIG_ITEM_MODULE_LIST, name, text, longtext, advc, \
323 p_callback, value ) \
324 vlc_config_set (p_config, VLC_CONFIG_CAPABILITY, (const char *)(psz_caps));
327 #define add_module_cat( name, i_subcategory, value, p_callback, text, longtext, advc ) \
328 add_string_inner( CONFIG_ITEM_MODULE_CAT, name, text, longtext, advc, \
329 p_callback, value ) \
330 p_config->min.i = i_subcategory /* gruik */;
332 #define add_module_list_cat( name, i_subcategory, value, p_callback, text, longtext, advc ) \
333 add_string_inner( CONFIG_ITEM_MODULE_LIST_CAT, name, text, longtext, \
334 advc, p_callback, value ) \
335 p_config->min.i = i_subcategory /* gruik */;
338 #define add_integer( name, value, p_callback, text, longtext, advc ) \
339 add_int_inner( CONFIG_ITEM_INTEGER, name, text, longtext, advc, \
342 #if !defined(WIN32) && !defined(SYS_LINUX)
343 #define add_key( name, value, p_callback, text, longtext, advc ) \
344 add_int_inner( CONFIG_ITEM_KEY, name, text, longtext, advc, p_callback, \
347 #define add_key( name, value, p_callback, text, longtext, advc ) \
348 add_int_inner( CONFIG_ITEM_KEY, name, text, longtext, advc, \
349 p_callback, value ) \
350 add_int_inner( CONFIG_ITEM_KEY, "global-" name, text, longtext, advc, \
351 p_callback, KEY_UNSET )
354 #define add_integer_with_range( name, value, i_min, i_max, p_callback, text, longtext, advc ) \
355 add_integer( name, value, p_callback, text, longtext, advc ) \
356 change_integer_range( i_min, i_max )
358 #define add_float( name, v, p_callback, text, longtext, advc ) \
359 add_typename_inner( CONFIG_ITEM_FLOAT, name, text, longtext, advc, p_callback ) \
360 vlc_config_set (p_config, VLC_CONFIG_VALUE, (double)(v));
362 #define add_float_with_range( name, value, f_min, f_max, p_callback, text, longtext, advc ) \
363 add_float( name, value, p_callback, text, longtext, advc ) \
364 change_float_range( f_min, f_max )
366 #define add_bool( name, v, p_callback, text, longtext, advc ) \
367 add_typename_inner( CONFIG_ITEM_BOOL, name, text, longtext, advc, \
369 if (v) vlc_config_set (p_config, VLC_CONFIG_VALUE, (int)true);
371 /* For removed option */
372 #define add_obsolete_inner( name, type ) \
373 add_type_inner( type ) \
374 vlc_config_set (p_config, VLC_CONFIG_NAME, \
375 (const char *)(name), (vlc_callback_t)NULL); \
376 vlc_config_set (p_config, VLC_CONFIG_REMOVED);
378 #define add_obsolete_bool( name ) \
379 add_obsolete_inner( name, CONFIG_ITEM_BOOL )
381 #define add_obsolete_integer( name ) \
382 add_obsolete_inner( name, CONFIG_ITEM_INTEGER )
384 #define add_obsolete_float( name ) \
385 add_obsolete_inner( name, CONFIG_ITEM_FLOAT )
387 #define add_obsolete_string( name ) \
388 add_obsolete_inner( name, CONFIG_ITEM_STRING )
390 /* Modifier macros for the config options (used for fine tuning) */
392 #define add_deprecated_alias( name ) \
393 vlc_config_set (p_config, VLC_CONFIG_OLDNAME, (const char *)(name));
395 #define change_short( ch ) \
396 vlc_config_set (p_config, VLC_CONFIG_SHORTCUT, (int)(ch));
398 #define change_string_list( list, list_text, list_update_func ) \
399 vlc_config_set (p_config, VLC_CONFIG_LIST, domain, \
400 (size_t)(sizeof (list) / sizeof (char *)), \
401 (const char *const *)(list), \
402 (const char *const *)(list_text), \
403 (vlc_callback_t)(list_update_func));
405 #define change_integer_list( list, list_text, list_update_func ) \
406 vlc_config_set (p_config, VLC_CONFIG_LIST, domain, \
407 (size_t)(sizeof (list) / sizeof (int)), \
408 (const int *)(list), \
409 (const char *const *)(list_text), \
410 (vlc_callback_t)(list_update_func));
412 #define change_float_list( list, list_text, list_update_func ) \
413 vlc_config_set (p_config, VLC_CONFIG_LIST, domain, \
414 (size_t)(sizeof (list) / sizeof (float)), \
415 (const float *)(list), \
416 (const char *const *)(list_text), \
417 (vlc_callback_t)(list_update_func));
419 #define change_integer_range( minv, maxv ) \
420 vlc_config_set (p_config, VLC_CONFIG_RANGE, (int)(minv), (int)(maxv));
422 #define change_float_range( minv, maxv ) \
423 vlc_config_set (p_config, VLC_CONFIG_RANGE, \
424 (double)(minv), (double)(maxv));
426 #define change_action_add( pf_action, text ) \
427 vlc_config_set (p_config, VLC_CONFIG_ADD_ACTION, domain, \
428 (vlc_callback_t)(pf_action), (const char *)(text));
430 #define change_internal() \
431 vlc_config_set (p_config, VLC_CONFIG_PRIVATE);
433 #define change_need_restart() \
434 vlc_config_set (p_config, VLC_CONFIG_RESTART);
436 #define change_autosave() \
437 vlc_config_set (p_config, VLC_CONFIG_PERSISTENT);
439 #define change_unsaveable() \
440 vlc_config_set (p_config, VLC_CONFIG_VOLATILE);
442 #define change_safe() \
443 vlc_config_set (p_config, VLC_CONFIG_SAFE);
445 /* Meta data plugin exports */
446 #define VLC_META_EXPORT( name, value ) \
447 EXTERN_SYMBOL DLL_SYMBOL const char * CDECL_SYMBOL \
448 __VLC_SYMBOL(vlc_entry_ ## name) (void); \
449 EXTERN_SYMBOL DLL_SYMBOL const char * CDECL_SYMBOL \
450 __VLC_SYMBOL(vlc_entry_ ## name) (void) \
455 #if defined (__LIBVLC__)
456 # define VLC_COPYRIGHT_EXPORT VLC_META_EXPORT (copyright, \
457 "\x43\x6f\x70\x79\x72\x69\x67\x68\x74\x20\x28\x43\x29\x20\x74\x68" \
458 "\x65\x20\x56\x69\x64\x65\x6f\x4c\x41\x4e\x20\x56\x4c\x43\x20\x6d" \
459 "\x65\x64\x69\x61\x20\x70\x6c\x61\x79\x65\x72\x20\x64\x65\x76\x65" \
460 "\x6c\x6f\x70\x70\x65\x72\x73" )
461 #elif !defined (VLC_COPYRIGHT_EXPORT)
462 # define VLC_COPYRIGHT_EXPORT
464 #define VLC_LICENSE_EXPORT VLC_META_EXPORT (license, \
465 "\x4c\x69\x63\x65\x6e\x73\x65\x64\x20\x75\x6e\x64\x65\x72\x20\x74" \
466 "\x68\x65\x20\x74\x65\x72\x6d\x73\x20\x6f\x66\x20\x74\x68\x65\x20" \
467 "\x47\x4e\x55\x20\x47\x65\x6e\x65\x72\x61\x6c\x20\x50\x75\x62\x6c" \
468 "\x69\x63\x20\x4c\x69\x63\x65\x6e\x73\x65\x2c\x20\x76\x65\x72\x73" \
469 "\x69\x6f\x6e\x20\x32\x20\x6f\x72\x20\x6c\x61\x74\x65\x72\x2e" )
471 #define VLC_METADATA_EXPORTS \
472 VLC_COPYRIGHT_EXPORT \