1 /*****************************************************************************
2 * libvlc.h: libvlc external API
3 *****************************************************************************
4 * Copyright (C) 1998-2009 the VideoLAN team
7 * Authors: Clément Stenac <zorglub@videolan.org>
8 * Jean-Paul Saman <jpsaman@videolan.org>
9 * Pierre d'Herbemont <pdherbemont@videolan.org>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
24 *****************************************************************************/
28 * This file defines libvlc external API
32 * \defgroup libvlc libvlc
33 * This is libvlc, the base library of the VLC program.
39 #define VLC_LIBVLC_H 1
41 #if defined (WIN32) && defined (DLL_EXPORT)
42 # define VLC_PUBLIC_API __declspec(dllexport)
44 # define VLC_PUBLIC_API
48 /* Avoid unuseful warnings from libvlc with our deprecated APIs */
49 # define VLC_DEPRECATED_API VLC_PUBLIC_API
50 #elif defined(__GNUC__) && \
51 (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
52 # define VLC_DEPRECATED_API VLC_PUBLIC_API __attribute__((deprecated))
54 # define VLC_DEPRECATED_API VLC_PUBLIC_API
62 #include <vlc/libvlc_structures.h>
64 /*****************************************************************************
66 *****************************************************************************/
67 /** \defgroup libvlc_exception libvlc_exception
68 * \ingroup libvlc_core
69 * LibVLC Exceptions handling
74 * Initialize an exception structure. This can be called several times to
75 * reuse an exception structure.
77 * \param p_exception the exception to initialize
79 VLC_PUBLIC_API void libvlc_exception_init( libvlc_exception_t *p_exception );
82 * Has an exception been raised?
84 * \param p_exception the exception to query
85 * \return 0 if the exception was raised, 1 otherwise
88 libvlc_exception_raised( const libvlc_exception_t *p_exception );
93 * \param p_exception the exception to raise
96 libvlc_exception_raise( libvlc_exception_t *p_exception );
99 * Clear an exception object so it can be reused.
100 * The exception object must have be initialized.
102 * \param p_exception the exception to clear
104 VLC_PUBLIC_API void libvlc_exception_clear( libvlc_exception_t * );
108 /*****************************************************************************
110 *****************************************************************************/
111 /** \defgroup libvlc_error libvlc_error
112 * \ingroup libvlc_core
113 * LibVLC error handling
118 * A human-readable error message for the last LibVLC error in the calling
119 * thread. The resulting string is valid until another error occurs (at least
120 * until the next LibVLC call).
123 * This will be NULL if there was no error.
125 VLC_PUBLIC_API const char *libvlc_errmsg (void);
128 * Clears the LibVLC error status for the current thread. This is optional.
129 * By default, the error status is automatically overriden when a new error
130 * occurs, and destroyed when the thread exits.
132 VLC_PUBLIC_API void libvlc_clearerr (void);
135 * Sets the LibVLC error status and message for the current thread.
136 * Any previous error is overriden.
137 * @return a nul terminated string in any case
139 const char *libvlc_vprinterr (const char *fmt, va_list ap);
142 * Sets the LibVLC error status and message for the current thread.
143 * Any previous error is overriden.
144 * @return a nul terminated string in any case
146 const char *libvlc_printerr (const char *fmt, ...);
151 /*****************************************************************************
153 *****************************************************************************/
155 /** \defgroup libvlc_core libvlc_core
162 * Create and initialize a libvlc instance.
164 * \param argc the number of arguments
165 * \param argv command-line-type arguments
166 * \return the libvlc instance or NULL in case of error
168 VLC_PUBLIC_API libvlc_instance_t *
169 libvlc_new( int , const char *const * );
172 * Decrement the reference count of a libvlc instance, and destroy it
173 * if it reaches zero.
175 * \param p_instance the instance to destroy
177 VLC_PUBLIC_API void libvlc_release( libvlc_instance_t * );
180 * Increments the reference count of a libvlc instance.
181 * The initial reference count is 1 after libvlc_new() returns.
183 * \param p_instance the instance to reference
185 VLC_PUBLIC_API void libvlc_retain( libvlc_instance_t * );
188 * Try to start a user interface for the libvlc instance.
190 * \param p_instance the instance
191 * \param name interface name, or NULL for default
192 * \return 0 on success, -1 on error.
195 int libvlc_add_intf( libvlc_instance_t *p_instance, const char *name );
198 * Waits until an interface causes the instance to exit.
199 * You should start at least one interface first, using libvlc_add_intf().
201 * \param p_instance the instance
204 void libvlc_wait( libvlc_instance_t *p_instance );
207 * Retrieve libvlc version.
209 * Example: "0.9.0-git Grishenko"
211 * \return a string containing the libvlc version
213 VLC_PUBLIC_API const char * libvlc_get_version(void);
216 * Retrieve libvlc compiler version.
218 * Example: "gcc version 4.2.3 (Ubuntu 4.2.3-2ubuntu6)"
220 * \return a string containing the libvlc compiler version
222 VLC_PUBLIC_API const char * libvlc_get_compiler(void);
225 * Retrieve libvlc changeset.
227 * Example: "aa9bce0bc4"
229 * \return a string containing the libvlc changeset
231 VLC_PUBLIC_API const char * libvlc_get_changeset(void);
236 * Frees an heap allocation (char *) returned by a LibVLC API.
237 * If you know you're using the same underlying C run-time as the LibVLC
238 * implementation, then you can call ANSI C free() directly instead.
240 * \param ptr the pointer
242 VLC_PUBLIC_API void libvlc_free( void *ptr );
246 /*****************************************************************************
248 *****************************************************************************/
250 /** \defgroup libvlc_event libvlc_event
251 * \ingroup libvlc_core
257 * Event manager that belongs to a libvlc object, and from whom events can
261 typedef struct libvlc_event_manager_t libvlc_event_manager_t;
262 typedef struct libvlc_event_t libvlc_event_t;
263 typedef uint32_t libvlc_event_type_t;
266 * Callback function notification
267 * \param p_event the event triggering the callback
270 typedef void ( *libvlc_callback_t )( const libvlc_event_t *, void * );
273 * Register for an event notification.
275 * \param p_event_manager the event manager to which you want to attach to.
276 * Generally it is obtained by vlc_my_object_event_manager() where
277 * my_object is the object you want to listen to.
278 * \param i_event_type the desired event to which we want to listen
279 * \param f_callback the function to call when i_event_type occurs
280 * \param user_data user provided data to carry with the event
281 * \return 0 on success, ENOMEM on error
283 VLC_PUBLIC_API int libvlc_event_attach( libvlc_event_manager_t *p_event_manager,
284 libvlc_event_type_t i_event_type,
285 libvlc_callback_t f_callback,
289 * Unregister an event notification.
291 * \param p_event_manager the event manager
292 * \param i_event_type the desired event to which we want to unregister
293 * \param f_callback the function to call when i_event_type occurs
294 * \param p_user_data user provided data to carry with the event
296 VLC_PUBLIC_API void libvlc_event_detach( libvlc_event_manager_t *p_event_manager,
297 libvlc_event_type_t i_event_type,
298 libvlc_callback_t f_callback,
302 * Get an event's type name.
304 * \param i_event_type the desired event
306 VLC_PUBLIC_API const char * libvlc_event_type_name( libvlc_event_type_t event_type );
310 /*****************************************************************************
311 * Message log handling
312 *****************************************************************************/
314 /** \defgroup libvlc_log libvlc_log
315 * \ingroup libvlc_core
316 * LibVLC Message Logging
321 * Return the VLC messaging verbosity level.
323 * \param p_instance libvlc instance
324 * \return verbosity level for messages
326 VLC_PUBLIC_API unsigned libvlc_get_log_verbosity( const libvlc_instance_t *p_instance );
329 * Set the VLC messaging verbosity level.
331 * \param p_instance libvlc log instance
332 * \param level log level
334 VLC_PUBLIC_API void libvlc_set_log_verbosity( libvlc_instance_t *p_instance, unsigned level );
337 * Open a VLC message log instance.
339 * \param p_instance libvlc instance
340 * \return log message instance or NULL on error
342 VLC_PUBLIC_API libvlc_log_t *libvlc_log_open( libvlc_instance_t *);
345 * Close a VLC message log instance.
347 * \param p_log libvlc log instance or NULL
349 VLC_PUBLIC_API void libvlc_log_close( libvlc_log_t *p_log );
352 * Returns the number of messages in a log instance.
354 * \param p_log libvlc log instance or NULL
355 * \return number of log messages, 0 if p_log is NULL
357 VLC_PUBLIC_API unsigned libvlc_log_count( const libvlc_log_t *p_log );
360 * Clear a log instance.
362 * All messages in the log are removed. The log should be cleared on a
363 * regular basis to avoid clogging.
365 * \param p_log libvlc log instance or NULL
367 VLC_PUBLIC_API void libvlc_log_clear( libvlc_log_t *p_log );
370 * Allocate and returns a new iterator to messages in log.
372 * \param p_log libvlc log instance
373 * \return log iterator object or NULL on error
375 VLC_PUBLIC_API libvlc_log_iterator_t *libvlc_log_get_iterator( const libvlc_log_t * );
378 * Release a previoulsy allocated iterator.
380 * \param p_iter libvlc log iterator or NULL
382 VLC_PUBLIC_API void libvlc_log_iterator_free( libvlc_log_iterator_t *p_iter );
385 * Return whether log iterator has more messages.
387 * \param p_iter libvlc log iterator or NULL
388 * \return true if iterator has more message objects, else false
390 VLC_PUBLIC_API int libvlc_log_iterator_has_next( const libvlc_log_iterator_t *p_iter );
393 * Return the next log message.
395 * The message contents must not be freed
397 * \param p_iter libvlc log iterator or NULL
398 * \param p_buffer log buffer
399 * \return log message object or NULL if none left
401 VLC_PUBLIC_API libvlc_log_message_t *libvlc_log_iterator_next( libvlc_log_iterator_t *p_iter,
402 libvlc_log_message_t *p_buffer );
410 #endif /* <vlc/libvlc.h> */