1 /*****************************************************************************
2 * media_player.c: Libvlc API Media Instance management functions
3 *****************************************************************************
4 * Copyright (C) 2005-2009 the VideoLAN team
7 * Authors: Clément Stenac <zorglub@videolan.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 *****************************************************************************/
30 #include <vlc/libvlc.h>
31 #include <vlc/libvlc_media.h>
32 #include <vlc/libvlc_events.h>
34 #include <vlc_demux.h>
35 #include <vlc_input.h>
40 #include "libvlc_internal.h"
41 #include "media_internal.h" // libvlc_media_set_state()
42 #include "media_player_internal.h"
45 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
46 vlc_value_t oldval, vlc_value_t newval,
49 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
50 vlc_value_t oldval, vlc_value_t newval,
53 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
54 vlc_value_t oldval, vlc_value_t newval,
58 snapshot_was_taken( vlc_object_t *p_this, char const *psz_cmd,
59 vlc_value_t oldval, vlc_value_t newval, void *p_data );
61 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi );
67 #define register_event(a, b) __register_event(a, libvlc_MediaPlayer ## b)
68 static inline void __register_event(libvlc_media_player_t *mp, libvlc_event_type_t type)
70 libvlc_event_manager_register_event_type(mp->p_event_manager, type);
73 static inline void lock(libvlc_media_player_t *mp)
75 vlc_mutex_lock(&mp->object_lock);
78 static inline void unlock(libvlc_media_player_t *mp)
80 vlc_mutex_unlock(&mp->object_lock);
84 * Release the associated input thread.
86 * Object lock is NOT held.
88 static void release_input_thread( libvlc_media_player_t *p_mi, bool b_input_abort )
90 input_thread_t * p_input_thread;
92 if( !p_mi || !p_mi->p_input_thread )
95 p_input_thread = p_mi->p_input_thread;
97 var_DelCallback( p_input_thread, "can-seek",
98 input_seekable_changed, p_mi );
99 var_DelCallback( p_input_thread, "can-pause",
100 input_pausable_changed, p_mi );
101 var_DelCallback( p_input_thread, "intf-event",
102 input_event_changed, p_mi );
104 /* We owned this one */
105 input_Stop( p_input_thread, b_input_abort );
107 vlc_thread_join( p_input_thread );
109 assert( p_mi->p_input_resource == NULL );
110 assert( p_input_thread->b_dead );
111 /* Store the input resource for future use. */
112 p_mi->p_input_resource = input_DetachResource( p_input_thread );
114 vlc_object_release( p_input_thread );
116 p_mi->p_input_thread = NULL;
120 * Retrieve the input thread. Be sure to release the object
121 * once you are done with it. (libvlc Internal)
123 * Function will lock the object.
125 input_thread_t *libvlc_get_input_thread( libvlc_media_player_t *p_mi )
127 input_thread_t *p_input_thread;
132 p_input_thread = p_mi->p_input_thread;
134 vlc_object_hold( p_input_thread );
136 libvlc_printerr( "No active input" );
139 return p_input_thread;
143 * Set the internal state of the media_player. (media player Internal)
145 * Function will lock the media_player.
147 static void set_state( libvlc_media_player_t *p_mi, libvlc_state_t state,
153 libvlc_media_t *media = p_mi->p_md;
155 libvlc_media_retain(media);
161 // Also set the state of the corresponding media
162 // This is strictly for convenience.
163 libvlc_media_set_state(media, state);
165 libvlc_media_release(media);
170 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
171 vlc_value_t oldval, vlc_value_t newval,
177 libvlc_media_player_t * p_mi = p_userdata;
178 libvlc_event_t event;
180 event.type = libvlc_MediaPlayerSeekableChanged;
181 event.u.media_player_seekable_changed.new_seekable = newval.b_bool;
183 libvlc_event_send( p_mi->p_event_manager, &event );
188 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
189 vlc_value_t oldval, vlc_value_t newval,
195 libvlc_media_player_t * p_mi = p_userdata;
196 libvlc_event_t event;
198 event.type = libvlc_MediaPlayerPausableChanged;
199 event.u.media_player_pausable_changed.new_pausable = newval.b_bool;
201 libvlc_event_send( p_mi->p_event_manager, &event );
206 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
207 vlc_value_t oldval, vlc_value_t newval,
211 input_thread_t * p_input = (input_thread_t *)p_this;
212 libvlc_media_player_t * p_mi = p_userdata;
213 libvlc_event_t event;
215 assert( !strcmp( psz_cmd, "intf-event" ) );
217 if( newval.i_int == INPUT_EVENT_STATE )
219 libvlc_state_t libvlc_state;
221 switch ( var_GetInteger( p_input, "state" ) )
224 libvlc_state = libvlc_NothingSpecial;
225 event.type = libvlc_MediaPlayerNothingSpecial;
228 libvlc_state = libvlc_Opening;
229 event.type = libvlc_MediaPlayerOpening;
232 libvlc_state = libvlc_Playing;
233 event.type = libvlc_MediaPlayerPlaying;
236 libvlc_state = libvlc_Paused;
237 event.type = libvlc_MediaPlayerPaused;
240 libvlc_state = libvlc_Ended;
241 event.type = libvlc_MediaPlayerEndReached;
244 libvlc_state = libvlc_Error;
245 event.type = libvlc_MediaPlayerEncounteredError;
252 set_state( p_mi, libvlc_state, false );
253 libvlc_event_send( p_mi->p_event_manager, &event );
255 else if( newval.i_int == INPUT_EVENT_ABORT )
257 libvlc_state_t libvlc_state = libvlc_Stopped;
258 event.type = libvlc_MediaPlayerStopped;
260 set_state( p_mi, libvlc_state, false );
261 libvlc_event_send( p_mi->p_event_manager, &event );
263 else if( newval.i_int == INPUT_EVENT_POSITION )
265 if( var_GetInteger( p_input, "state" ) != PLAYING_S )
266 return VLC_SUCCESS; /* Don't send the position while stopped */
269 event.type = libvlc_MediaPlayerPositionChanged;
270 event.u.media_player_position_changed.new_position =
271 var_GetFloat( p_input, "position" );
272 libvlc_event_send( p_mi->p_event_manager, &event );
275 event.type = libvlc_MediaPlayerTimeChanged;
276 event.u.media_player_time_changed.new_time =
277 from_mtime(var_GetTime( p_input, "time" ));
278 libvlc_event_send( p_mi->p_event_manager, &event );
280 else if( newval.i_int == INPUT_EVENT_LENGTH )
282 event.type = libvlc_MediaPlayerLengthChanged;
283 event.u.media_player_length_changed.new_length =
284 from_mtime(var_GetTime( p_input, "length" ));
285 libvlc_event_send( p_mi->p_event_manager, &event );
292 /**************************************************************************
293 * Snapshot Taken Event.
295 * FIXME: This snapshot API interface makes no sense in media_player.
296 *************************************************************************/
297 static int snapshot_was_taken(vlc_object_t *p_this, char const *psz_cmd,
298 vlc_value_t oldval, vlc_value_t newval, void *p_data )
300 VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED(p_this);
302 libvlc_media_player_t *mp = p_data;
303 libvlc_event_t event;
304 event.type = libvlc_MediaPlayerSnapshotTaken;
305 event.u.media_player_snapshot_taken.psz_filename = newval.psz_string;
306 libvlc_event_send(mp->p_event_manager, &event);
312 static void libvlc_media_player_destroy( libvlc_media_player_t * );
315 /**************************************************************************
316 * Create a Media Instance object.
319 * - All items created by _new start with a refcount set to 1.
320 * - Accessor _release decrease the refcount by 1, if after that
321 * operation the refcount is 0, the object is destroyed.
322 * - Accessor _retain increase the refcount by 1 (XXX: to implement)
324 * Object locking strategy:
325 * - No lock held while in constructor.
326 * - When accessing any member variable this lock is held. (XXX who locks?)
327 * - When attempting to destroy the object the lock is also held.
328 **************************************************************************/
329 libvlc_media_player_t *
330 libvlc_media_player_new( libvlc_instance_t *instance )
332 libvlc_media_player_t * mp;
336 mp = vlc_object_create (instance->p_libvlc_int, sizeof(*mp));
337 if (unlikely(mp == NULL))
339 libvlc_printerr("Not enough memory");
342 vlc_object_attach (mp, mp->p_libvlc);
345 var_Create (mp, "drawable-xid", VLC_VAR_INTEGER);
347 var_Create (mp, "drawable-hwnd", VLC_VAR_ADDRESS);
350 var_Create (mp, "drawable-agl", VLC_VAR_INTEGER);
351 var_Create (mp, "drawable-nsobject", VLC_VAR_ADDRESS);
354 /* Drawable input methods */
355 var_Create (mp, "keyboard-events", VLC_VAR_BOOL);
356 var_SetBool (mp, "keyboard-events", true);
357 var_Create (mp, "mouse-events", VLC_VAR_BOOL);
360 var_Create (mp, "aout", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
363 mp->state = libvlc_NothingSpecial;
364 mp->p_libvlc_instance = instance;
365 mp->p_input_thread = NULL;
366 mp->p_input_resource = NULL;
368 mp->p_event_manager = libvlc_event_manager_new(mp, instance);
369 if (unlikely(mp->p_event_manager == NULL))
371 vlc_object_release(mp);
374 vlc_mutex_init(&mp->object_lock);
376 register_event(mp, NothingSpecial);
377 register_event(mp, Opening);
378 register_event(mp, Buffering);
379 register_event(mp, Playing);
380 register_event(mp, Paused);
381 register_event(mp, Stopped);
382 register_event(mp, Forward);
383 register_event(mp, Backward);
384 register_event(mp, EndReached);
385 register_event(mp, EncounteredError);
386 register_event(mp, SeekableChanged);
388 register_event(mp, PositionChanged);
389 register_event(mp, TimeChanged);
390 register_event(mp, LengthChanged);
391 register_event(mp, TitleChanged);
392 register_event(mp, PausableChanged);
394 /* Snapshot initialization */
395 register_event(mp, SnapshotTaken);
397 register_event(mp, MediaChanged);
399 /* Attach a var callback to the global object to provide the glue between
400 * vout_thread that generates the event and media_player that re-emits it
401 * with its own event manager
403 * FIXME: It's unclear why we want to put this in public API, and why we
404 * want to expose it in such a limiting and ugly way.
406 var_AddCallback(mp->p_libvlc, "snapshot-file", snapshot_was_taken, mp);
411 /**************************************************************************
412 * Create a Media Instance object with a media descriptor.
413 **************************************************************************/
414 libvlc_media_player_t *
415 libvlc_media_player_new_from_media( libvlc_media_t * p_md )
417 libvlc_media_player_t * p_mi;
419 p_mi = libvlc_media_player_new( p_md->p_libvlc_instance );
423 libvlc_media_retain( p_md );
429 /**************************************************************************
430 * Destroy a Media Instance object (libvlc internal)
432 * Warning: No lock held here, but hey, this is internal. Caller must lock.
433 **************************************************************************/
434 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
438 /* Detach Callback from the main libvlc object */
439 var_DelCallback( p_mi->p_libvlc,
440 "snapshot-file", snapshot_was_taken, p_mi );
442 /* If the input thread hasn't been already deleted it means
443 * that the owners didn't stop the thread before releasing it. */
444 assert(!p_mi->p_input_thread);
446 /* Fallback for those who don't use NDEBUG */
447 if (p_mi->p_input_thread)
448 release_input_thread(p_mi, true);
450 if( p_mi->p_input_resource )
452 input_resource_Delete( p_mi->p_input_resource );
453 p_mi->p_input_resource = NULL;
456 libvlc_event_manager_release( p_mi->p_event_manager );
457 libvlc_media_release( p_mi->p_md );
458 vlc_mutex_destroy( &p_mi->object_lock );
459 vlc_object_release( p_mi );
462 /**************************************************************************
463 * Release a Media Instance object.
465 * Function does the locking.
466 **************************************************************************/
467 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
473 destroy = !--p_mi->i_refcount;
477 libvlc_media_player_destroy( p_mi );
480 /**************************************************************************
481 * Retain a Media Instance object.
483 * Caller must hold the lock.
484 **************************************************************************/
485 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
494 /**************************************************************************
495 * Set the Media descriptor associated with the instance.
497 * Enter without lock -- function will lock the object.
498 **************************************************************************/
499 void libvlc_media_player_set_media(
500 libvlc_media_player_t *p_mi,
501 libvlc_media_t *p_md )
505 /* FIXME I am not sure if it is a user request or on die(eof/error)
507 release_input_thread( p_mi,
508 p_mi->p_input_thread &&
509 !p_mi->p_input_thread->b_eof &&
510 !p_mi->p_input_thread->b_error );
512 set_state( p_mi, libvlc_NothingSpecial, true );
514 libvlc_media_release( p_mi->p_md );
520 return; /* It is ok to pass a NULL md */
523 libvlc_media_retain( p_md );
526 /* The policy here is to ignore that we were created using a different
527 * libvlc_instance, because we don't really care */
528 p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
532 /* Send an event for the newly available media */
533 libvlc_event_t event;
534 event.type = libvlc_MediaPlayerMediaChanged;
535 event.u.media_player_media_changed.new_media = p_md;
536 libvlc_event_send( p_mi->p_event_manager, &event );
540 /**************************************************************************
541 * Get the Media descriptor associated with the instance.
542 **************************************************************************/
544 libvlc_media_player_get_media( libvlc_media_player_t *p_mi )
551 libvlc_media_retain( p_mi->p_md );
556 /**************************************************************************
557 * Get the event Manager.
558 **************************************************************************/
559 libvlc_event_manager_t *
560 libvlc_media_player_event_manager( libvlc_media_player_t *p_mi )
562 return p_mi->p_event_manager;
565 /**************************************************************************
566 * Tell media player to start playing.
567 **************************************************************************/
568 int libvlc_media_player_play( libvlc_media_player_t *p_mi )
570 input_thread_t * p_input_thread;
572 if( (p_input_thread = libvlc_get_input_thread( p_mi )) )
574 /* A thread already exists, send it a play message */
575 input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
576 vlc_object_release( p_input_thread );
580 /* Ignore previous exception */
586 libvlc_printerr( "No associated media descriptor" );
590 p_mi->p_input_thread = input_Create( p_mi,
591 p_mi->p_md->p_input_item, NULL,
592 p_mi->p_input_resource );
593 if( !p_mi->p_input_thread )
596 libvlc_printerr( "Not enough memory" );
600 p_mi->p_input_resource = NULL;
601 p_input_thread = p_mi->p_input_thread;
603 var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
604 var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
605 var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
607 if( input_Start( p_input_thread ) )
609 vlc_object_release( p_input_thread );
610 p_mi->p_input_thread = NULL;
617 /**************************************************************************
619 **************************************************************************/
620 void libvlc_media_player_pause( libvlc_media_player_t *p_mi )
622 input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi );
623 if( !p_input_thread )
626 libvlc_state_t state = libvlc_media_player_get_state( p_mi );
627 if( state == libvlc_Playing || state == libvlc_Buffering )
629 if( libvlc_media_player_can_pause( p_mi ) )
630 input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
632 libvlc_media_player_stop( p_mi );
635 input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
637 vlc_object_release( p_input_thread );
640 /**************************************************************************
641 * Tells whether the media player is currently playing.
643 * Enter with lock held.
644 **************************************************************************/
645 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi )
647 libvlc_state_t state = libvlc_media_player_get_state( p_mi );
648 return (libvlc_Playing == state) || (libvlc_Buffering == state);
651 /**************************************************************************
653 **************************************************************************/
654 void libvlc_media_player_stop( libvlc_media_player_t *p_mi )
656 libvlc_state_t state = libvlc_media_player_get_state( p_mi );
659 release_input_thread( p_mi, true ); /* This will stop the input thread */
662 /* Force to go to stopped state, in case we were in Ended, or Error
664 if( state != libvlc_Stopped )
666 set_state( p_mi, libvlc_Stopped, false );
668 /* Construct and send the event */
669 libvlc_event_t event;
670 event.type = libvlc_MediaPlayerStopped;
671 libvlc_event_send( p_mi->p_event_manager, &event );
675 /**************************************************************************
677 **************************************************************************/
678 void libvlc_media_player_set_nsobject( libvlc_media_player_t *p_mi,
681 assert (p_mi != NULL);
683 var_SetAddress (p_mi, "drawable-nsobject", drawable);
685 (void) p_mi; (void)drawable;
689 /**************************************************************************
691 **************************************************************************/
692 void * libvlc_media_player_get_nsobject( libvlc_media_player_t *p_mi )
694 assert (p_mi != NULL);
696 return var_GetAddress (p_mi, "drawable-nsobject");
702 /**************************************************************************
704 **************************************************************************/
705 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
709 var_SetInteger (p_mi, "drawable-agl", drawable);
711 (void) p_mi; (void)drawable;
715 /**************************************************************************
717 **************************************************************************/
718 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
720 assert (p_mi != NULL);
722 return var_GetInteger (p_mi, "drawable-agl");
728 /**************************************************************************
730 **************************************************************************/
731 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
734 assert (p_mi != NULL);
735 var_SetInteger (p_mi, "drawable-xid", drawable);
738 /**************************************************************************
740 **************************************************************************/
741 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
743 return var_GetInteger (p_mi, "drawable-xid");
746 /**************************************************************************
748 **************************************************************************/
749 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
752 assert (p_mi != NULL);
754 var_SetAddress (p_mi, "drawable-hwnd", drawable);
756 (void) p_mi; (void) drawable;
760 /**************************************************************************
762 **************************************************************************/
763 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
765 assert (p_mi != NULL);
767 return var_GetAddress (p_mi, "drawable-hwnd");
773 /**************************************************************************
774 * Getters for stream information
775 **************************************************************************/
776 libvlc_time_t libvlc_media_player_get_length(
777 libvlc_media_player_t *p_mi )
779 input_thread_t *p_input_thread;
780 libvlc_time_t i_time;
782 p_input_thread = libvlc_get_input_thread ( p_mi );
783 if( !p_input_thread )
786 i_time = from_mtime(var_GetTime( p_input_thread, "length" ));
787 vlc_object_release( p_input_thread );
792 libvlc_time_t libvlc_media_player_get_time( libvlc_media_player_t *p_mi )
794 input_thread_t *p_input_thread;
795 libvlc_time_t i_time;
797 p_input_thread = libvlc_get_input_thread ( p_mi );
798 if( !p_input_thread )
801 i_time = from_mtime(var_GetTime( p_input_thread , "time" ));
802 vlc_object_release( p_input_thread );
806 void libvlc_media_player_set_time( libvlc_media_player_t *p_mi,
807 libvlc_time_t i_time )
809 input_thread_t *p_input_thread;
811 p_input_thread = libvlc_get_input_thread ( p_mi );
812 if( !p_input_thread )
815 var_SetTime( p_input_thread, "time", to_mtime(i_time) );
816 vlc_object_release( p_input_thread );
819 void libvlc_media_player_set_position( libvlc_media_player_t *p_mi,
822 input_thread_t *p_input_thread;
824 p_input_thread = libvlc_get_input_thread ( p_mi );
825 if( !p_input_thread )
828 var_SetFloat( p_input_thread, "position", position );
829 vlc_object_release( p_input_thread );
832 float libvlc_media_player_get_position( libvlc_media_player_t *p_mi )
834 input_thread_t *p_input_thread;
837 p_input_thread = libvlc_get_input_thread ( p_mi );
838 if( !p_input_thread )
841 f_position = var_GetFloat( p_input_thread, "position" );
842 vlc_object_release( p_input_thread );
847 void libvlc_media_player_set_chapter( libvlc_media_player_t *p_mi,
850 input_thread_t *p_input_thread;
852 p_input_thread = libvlc_get_input_thread ( p_mi );
853 if( !p_input_thread )
856 var_SetInteger( p_input_thread, "chapter", chapter );
857 vlc_object_release( p_input_thread );
860 int libvlc_media_player_get_chapter( libvlc_media_player_t *p_mi )
862 input_thread_t *p_input_thread;
865 p_input_thread = libvlc_get_input_thread ( p_mi );
866 if( !p_input_thread )
869 i_chapter = var_GetInteger( p_input_thread, "chapter" );
870 vlc_object_release( p_input_thread );
875 int libvlc_media_player_get_chapter_count( libvlc_media_player_t *p_mi )
877 input_thread_t *p_input_thread;
880 p_input_thread = libvlc_get_input_thread ( p_mi );
881 if( !p_input_thread )
884 var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
885 vlc_object_release( p_input_thread );
890 int libvlc_media_player_get_chapter_count_for_title(
891 libvlc_media_player_t *p_mi,
894 input_thread_t *p_input_thread;
897 p_input_thread = libvlc_get_input_thread ( p_mi );
898 if( !p_input_thread )
902 if( asprintf( &psz_name, "title %2i", i_title ) == -1 )
904 vlc_object_release( p_input_thread );
907 var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
908 vlc_object_release( p_input_thread );
914 void libvlc_media_player_set_title( libvlc_media_player_t *p_mi,
917 input_thread_t *p_input_thread;
919 p_input_thread = libvlc_get_input_thread ( p_mi );
920 if( !p_input_thread )
923 var_SetInteger( p_input_thread, "title", i_title );
924 vlc_object_release( p_input_thread );
927 libvlc_event_t event;
928 event.type = libvlc_MediaPlayerTitleChanged;
929 event.u.media_player_title_changed.new_title = i_title;
930 libvlc_event_send( p_mi->p_event_manager, &event );
933 int libvlc_media_player_get_title( libvlc_media_player_t *p_mi )
935 input_thread_t *p_input_thread;
938 p_input_thread = libvlc_get_input_thread ( p_mi );
939 if( !p_input_thread )
942 i_title = var_GetInteger( p_input_thread, "title" );
943 vlc_object_release( p_input_thread );
948 int libvlc_media_player_get_title_count( libvlc_media_player_t *p_mi )
950 input_thread_t *p_input_thread;
953 p_input_thread = libvlc_get_input_thread ( p_mi );
954 if( !p_input_thread )
957 var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
958 vlc_object_release( p_input_thread );
963 void libvlc_media_player_next_chapter( libvlc_media_player_t *p_mi )
965 input_thread_t *p_input_thread;
967 p_input_thread = libvlc_get_input_thread ( p_mi );
968 if( !p_input_thread )
971 int i_type = var_Type( p_input_thread, "next-chapter" );
972 var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
973 "next-chapter":"next-title", true );
975 vlc_object_release( p_input_thread );
978 void libvlc_media_player_previous_chapter( libvlc_media_player_t *p_mi )
980 input_thread_t *p_input_thread;
982 p_input_thread = libvlc_get_input_thread ( p_mi );
983 if( !p_input_thread )
986 int i_type = var_Type( p_input_thread, "next-chapter" );
987 var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
988 "prev-chapter":"prev-title", true );
990 vlc_object_release( p_input_thread );
993 float libvlc_media_player_get_fps( libvlc_media_player_t *p_mi )
995 input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1000 if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1002 vlc_object_release( p_input_thread );
1007 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi )
1010 input_thread_t *p_input_thread =
1011 libvlc_get_input_thread ( p_mi );
1012 if ( !p_input_thread )
1015 b_will_play = !p_input_thread->b_die && !p_input_thread->b_dead;
1016 vlc_object_release( p_input_thread );
1021 int libvlc_media_player_set_rate( libvlc_media_player_t *p_mi, float rate )
1023 input_thread_t *p_input_thread;
1026 p_input_thread = libvlc_get_input_thread ( p_mi );
1027 if( !p_input_thread )
1030 b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1031 if( (rate < 0.0) && !b_can_rewind )
1033 vlc_object_release( p_input_thread );
1034 libvlc_printerr( "Invalid playback rate" );
1038 var_SetFloat( p_input_thread, "rate", rate );
1039 vlc_object_release( p_input_thread );
1043 float libvlc_media_player_get_rate( libvlc_media_player_t *p_mi )
1045 input_thread_t *p_input_thread;
1049 p_input_thread = libvlc_get_input_thread ( p_mi );
1050 if( !p_input_thread )
1051 return 0.0; /* rate < 0 indicates rewind */
1053 f_rate = var_GetFloat( p_input_thread, "rate" );
1054 b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1055 /* FIXME: why are negative values forbidden ?? (rewinding) */
1056 if( f_rate < 0 && !b_can_rewind )
1058 vlc_object_release( p_input_thread );
1061 vlc_object_release( p_input_thread );
1066 libvlc_state_t libvlc_media_player_get_state( libvlc_media_player_t *p_mi )
1069 libvlc_state_t state = p_mi->state;
1074 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi )
1076 input_thread_t *p_input_thread;
1079 p_input_thread = libvlc_get_input_thread ( p_mi );
1080 if ( !p_input_thread )
1082 b_seekable = var_GetBool( p_input_thread, "can-seek" );
1083 vlc_object_release( p_input_thread );
1088 /* internal function, used by audio, video */
1089 libvlc_track_description_t *
1090 libvlc_get_track_description( libvlc_media_player_t *p_mi,
1091 const char *psz_variable )
1093 input_thread_t *p_input = libvlc_get_input_thread( p_mi );
1094 libvlc_track_description_t *p_track_description = NULL,
1095 *p_actual, *p_previous;
1100 vlc_value_t val_list, text_list;
1101 var_Change( p_input, psz_variable, VLC_VAR_GETLIST, &val_list, &text_list);
1104 if( val_list.p_list->i_count <= 0 )
1107 p_track_description = ( libvlc_track_description_t * )
1108 malloc( sizeof( libvlc_track_description_t ) );
1109 if ( !p_track_description )
1111 libvlc_printerr( "Not enough memory" );
1114 p_actual = p_track_description;
1116 for( int i = 0; i < val_list.p_list->i_count; i++ )
1120 p_actual = ( libvlc_track_description_t * )
1121 malloc( sizeof( libvlc_track_description_t ) );
1124 libvlc_track_description_release( p_track_description );
1125 libvlc_printerr( "Not enough memory" );
1129 p_actual->i_id = val_list.p_list->p_values[i].i_int;
1130 p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1131 p_actual->p_next = NULL;
1133 p_previous->p_next = p_actual;
1134 p_previous = p_actual;
1139 var_FreeList( &val_list, &text_list );
1140 vlc_object_release( p_input );
1142 return p_track_description;
1145 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1147 libvlc_track_description_t *p_actual, *p_before;
1152 free( p_actual->psz_name );
1153 p_before = p_actual;
1154 p_actual = p_before->p_next;
1159 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi )
1161 input_thread_t *p_input_thread;
1164 p_input_thread = libvlc_get_input_thread ( p_mi );
1165 if ( !p_input_thread )
1167 b_can_pause = var_GetBool( p_input_thread, "can-pause" );
1168 vlc_object_release( p_input_thread );
1173 void libvlc_media_player_next_frame( libvlc_media_player_t *p_mi )
1175 input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1176 if( p_input_thread != NULL )
1178 var_TriggerCallback( p_input_thread, "frame-next" );
1179 vlc_object_release( p_input_thread );