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 var_Create (mp, "keyboard-events", VLC_VAR_BOOL);
355 var_SetBool (mp, "keyboard-events", true);
356 var_Create (mp, "mouse-events", VLC_VAR_BOOL);
357 var_SetBool (mp, "mouse-events", true);
359 var_Create (mp, "fullscreen", VLC_VAR_BOOL);
360 var_Create (mp, "autoscale", VLC_VAR_BOOL);
361 var_SetBool (mp, "autoscale", true);
362 var_Create (mp, "scale", VLC_VAR_FLOAT);
363 var_SetFloat (mp, "scale", 1.);
364 var_Create (mp, "aspect-ratio", VLC_VAR_STRING);
365 var_Create (mp, "crop", VLC_VAR_STRING);
366 var_Create (mp, "deinterlace", VLC_VAR_INTEGER);
367 var_Create (mp, "deinterlace-mode", VLC_VAR_STRING);
368 var_Create (mp, "vbi-page", VLC_VAR_INTEGER);
371 var_Create (mp, "aout", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
374 mp->state = libvlc_NothingSpecial;
375 mp->p_libvlc_instance = instance;
376 mp->p_input_thread = NULL;
377 mp->p_input_resource = NULL;
379 mp->p_event_manager = libvlc_event_manager_new(mp, instance);
380 if (unlikely(mp->p_event_manager == NULL))
382 vlc_object_release(mp);
385 vlc_mutex_init(&mp->object_lock);
387 register_event(mp, NothingSpecial);
388 register_event(mp, Opening);
389 register_event(mp, Buffering);
390 register_event(mp, Playing);
391 register_event(mp, Paused);
392 register_event(mp, Stopped);
393 register_event(mp, Forward);
394 register_event(mp, Backward);
395 register_event(mp, EndReached);
396 register_event(mp, EncounteredError);
397 register_event(mp, SeekableChanged);
399 register_event(mp, PositionChanged);
400 register_event(mp, TimeChanged);
401 register_event(mp, LengthChanged);
402 register_event(mp, TitleChanged);
403 register_event(mp, PausableChanged);
405 /* Snapshot initialization */
406 register_event(mp, SnapshotTaken);
408 register_event(mp, MediaChanged);
410 /* Attach a var callback to the global object to provide the glue between
411 * vout_thread that generates the event and media_player that re-emits it
412 * with its own event manager
414 * FIXME: It's unclear why we want to put this in public API, and why we
415 * want to expose it in such a limiting and ugly way.
417 var_AddCallback(mp->p_libvlc, "snapshot-file", snapshot_was_taken, mp);
419 libvlc_retain(instance);
423 /**************************************************************************
424 * Create a Media Instance object with a media descriptor.
425 **************************************************************************/
426 libvlc_media_player_t *
427 libvlc_media_player_new_from_media( libvlc_media_t * p_md )
429 libvlc_media_player_t * p_mi;
431 p_mi = libvlc_media_player_new( p_md->p_libvlc_instance );
435 libvlc_media_retain( p_md );
441 /**************************************************************************
442 * Destroy a Media Instance object (libvlc internal)
444 * Warning: No lock held here, but hey, this is internal. Caller must lock.
445 **************************************************************************/
446 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
450 /* Detach Callback from the main libvlc object */
451 var_DelCallback( p_mi->p_libvlc,
452 "snapshot-file", snapshot_was_taken, p_mi );
454 /* If the input thread hasn't been already deleted it means
455 * that the owners didn't stop the thread before releasing it. */
456 assert(!p_mi->p_input_thread);
458 /* Fallback for those who don't use NDEBUG */
459 if (p_mi->p_input_thread)
460 release_input_thread(p_mi, true);
462 if( p_mi->p_input_resource )
464 input_resource_Delete( p_mi->p_input_resource );
465 p_mi->p_input_resource = NULL;
468 libvlc_event_manager_release( p_mi->p_event_manager );
469 libvlc_media_release( p_mi->p_md );
470 vlc_mutex_destroy( &p_mi->object_lock );
472 libvlc_instance_t *instance = p_mi->p_libvlc_instance;
473 vlc_object_release( p_mi );
474 libvlc_release(instance);
477 /**************************************************************************
478 * Release a Media Instance object.
480 * Function does the locking.
481 **************************************************************************/
482 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
488 destroy = !--p_mi->i_refcount;
492 libvlc_media_player_destroy( p_mi );
495 /**************************************************************************
496 * Retain a Media Instance object.
498 * Caller must hold the lock.
499 **************************************************************************/
500 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
509 /**************************************************************************
510 * Set the Media descriptor associated with the instance.
512 * Enter without lock -- function will lock the object.
513 **************************************************************************/
514 void libvlc_media_player_set_media(
515 libvlc_media_player_t *p_mi,
516 libvlc_media_t *p_md )
520 /* FIXME I am not sure if it is a user request or on die(eof/error)
522 release_input_thread( p_mi,
523 p_mi->p_input_thread &&
524 !p_mi->p_input_thread->b_eof &&
525 !p_mi->p_input_thread->b_error );
527 set_state( p_mi, libvlc_NothingSpecial, true );
529 libvlc_media_release( p_mi->p_md );
535 return; /* It is ok to pass a NULL md */
538 libvlc_media_retain( p_md );
541 /* The policy here is to ignore that we were created using a different
542 * libvlc_instance, because we don't really care */
543 p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
547 /* Send an event for the newly available media */
548 libvlc_event_t event;
549 event.type = libvlc_MediaPlayerMediaChanged;
550 event.u.media_player_media_changed.new_media = p_md;
551 libvlc_event_send( p_mi->p_event_manager, &event );
555 /**************************************************************************
556 * Get the Media descriptor associated with the instance.
557 **************************************************************************/
559 libvlc_media_player_get_media( libvlc_media_player_t *p_mi )
566 libvlc_media_retain( p_mi->p_md );
571 /**************************************************************************
572 * Get the event Manager.
573 **************************************************************************/
574 libvlc_event_manager_t *
575 libvlc_media_player_event_manager( libvlc_media_player_t *p_mi )
577 return p_mi->p_event_manager;
580 /**************************************************************************
581 * Tell media player to start playing.
582 **************************************************************************/
583 int libvlc_media_player_play( libvlc_media_player_t *p_mi )
585 input_thread_t * p_input_thread;
587 if( (p_input_thread = libvlc_get_input_thread( p_mi )) )
589 /* A thread already exists, send it a play message */
590 input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
591 vlc_object_release( p_input_thread );
595 /* Ignore previous exception */
601 libvlc_printerr( "No associated media descriptor" );
605 p_mi->p_input_thread = input_Create( p_mi,
606 p_mi->p_md->p_input_item, NULL,
607 p_mi->p_input_resource );
608 if( !p_mi->p_input_thread )
611 libvlc_printerr( "Not enough memory" );
615 p_mi->p_input_resource = NULL;
616 p_input_thread = p_mi->p_input_thread;
618 var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
619 var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
620 var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
622 if( input_Start( p_input_thread ) )
624 vlc_object_release( p_input_thread );
625 p_mi->p_input_thread = NULL;
632 /**************************************************************************
634 **************************************************************************/
635 void libvlc_media_player_pause( libvlc_media_player_t *p_mi )
637 input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi );
638 if( !p_input_thread )
641 libvlc_state_t state = libvlc_media_player_get_state( p_mi );
642 if( state == libvlc_Playing || state == libvlc_Buffering )
644 if( libvlc_media_player_can_pause( p_mi ) )
645 input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
647 libvlc_media_player_stop( p_mi );
650 input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
652 vlc_object_release( p_input_thread );
655 /**************************************************************************
656 * Tells whether the media player is currently playing.
658 * Enter with lock held.
659 **************************************************************************/
660 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi )
662 libvlc_state_t state = libvlc_media_player_get_state( p_mi );
663 return (libvlc_Playing == state) || (libvlc_Buffering == state);
666 /**************************************************************************
668 **************************************************************************/
669 void libvlc_media_player_stop( libvlc_media_player_t *p_mi )
671 libvlc_state_t state = libvlc_media_player_get_state( p_mi );
674 release_input_thread( p_mi, true ); /* This will stop the input thread */
677 /* Force to go to stopped state, in case we were in Ended, or Error
679 if( state != libvlc_Stopped )
681 set_state( p_mi, libvlc_Stopped, false );
683 /* Construct and send the event */
684 libvlc_event_t event;
685 event.type = libvlc_MediaPlayerStopped;
686 libvlc_event_send( p_mi->p_event_manager, &event );
690 /**************************************************************************
692 **************************************************************************/
693 void libvlc_media_player_set_nsobject( libvlc_media_player_t *p_mi,
696 assert (p_mi != NULL);
698 var_SetAddress (p_mi, "drawable-nsobject", drawable);
700 (void) p_mi; (void)drawable;
704 /**************************************************************************
706 **************************************************************************/
707 void * libvlc_media_player_get_nsobject( libvlc_media_player_t *p_mi )
709 assert (p_mi != NULL);
711 return var_GetAddress (p_mi, "drawable-nsobject");
717 /**************************************************************************
719 **************************************************************************/
720 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
724 var_SetInteger (p_mi, "drawable-agl", drawable);
726 (void) p_mi; (void)drawable;
730 /**************************************************************************
732 **************************************************************************/
733 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
735 assert (p_mi != NULL);
737 return var_GetInteger (p_mi, "drawable-agl");
743 /**************************************************************************
745 **************************************************************************/
746 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
749 assert (p_mi != NULL);
750 var_SetInteger (p_mi, "drawable-xid", drawable);
753 /**************************************************************************
755 **************************************************************************/
756 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
758 return var_GetInteger (p_mi, "drawable-xid");
761 /**************************************************************************
763 **************************************************************************/
764 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
767 assert (p_mi != NULL);
769 var_SetAddress (p_mi, "drawable-hwnd", drawable);
771 (void) p_mi; (void) drawable;
775 /**************************************************************************
777 **************************************************************************/
778 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
780 assert (p_mi != NULL);
782 return var_GetAddress (p_mi, "drawable-hwnd");
788 /**************************************************************************
789 * Getters for stream information
790 **************************************************************************/
791 libvlc_time_t libvlc_media_player_get_length(
792 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, "length" ));
802 vlc_object_release( p_input_thread );
807 libvlc_time_t libvlc_media_player_get_time( libvlc_media_player_t *p_mi )
809 input_thread_t *p_input_thread;
810 libvlc_time_t i_time;
812 p_input_thread = libvlc_get_input_thread ( p_mi );
813 if( !p_input_thread )
816 i_time = from_mtime(var_GetTime( p_input_thread , "time" ));
817 vlc_object_release( p_input_thread );
821 void libvlc_media_player_set_time( libvlc_media_player_t *p_mi,
822 libvlc_time_t i_time )
824 input_thread_t *p_input_thread;
826 p_input_thread = libvlc_get_input_thread ( p_mi );
827 if( !p_input_thread )
830 var_SetTime( p_input_thread, "time", to_mtime(i_time) );
831 vlc_object_release( p_input_thread );
834 void libvlc_media_player_set_position( libvlc_media_player_t *p_mi,
837 input_thread_t *p_input_thread;
839 p_input_thread = libvlc_get_input_thread ( p_mi );
840 if( !p_input_thread )
843 var_SetFloat( p_input_thread, "position", position );
844 vlc_object_release( p_input_thread );
847 float libvlc_media_player_get_position( libvlc_media_player_t *p_mi )
849 input_thread_t *p_input_thread;
852 p_input_thread = libvlc_get_input_thread ( p_mi );
853 if( !p_input_thread )
856 f_position = var_GetFloat( p_input_thread, "position" );
857 vlc_object_release( p_input_thread );
862 void libvlc_media_player_set_chapter( libvlc_media_player_t *p_mi,
865 input_thread_t *p_input_thread;
867 p_input_thread = libvlc_get_input_thread ( p_mi );
868 if( !p_input_thread )
871 var_SetInteger( p_input_thread, "chapter", chapter );
872 vlc_object_release( p_input_thread );
875 int libvlc_media_player_get_chapter( 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 i_chapter = var_GetInteger( p_input_thread, "chapter" );
885 vlc_object_release( p_input_thread );
890 int libvlc_media_player_get_chapter_count( libvlc_media_player_t *p_mi )
892 input_thread_t *p_input_thread;
895 p_input_thread = libvlc_get_input_thread ( p_mi );
896 if( !p_input_thread )
899 var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
900 vlc_object_release( p_input_thread );
905 int libvlc_media_player_get_chapter_count_for_title(
906 libvlc_media_player_t *p_mi,
909 input_thread_t *p_input_thread;
912 p_input_thread = libvlc_get_input_thread ( p_mi );
913 if( !p_input_thread )
917 if( asprintf( &psz_name, "title %2i", i_title ) == -1 )
919 vlc_object_release( p_input_thread );
922 var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
923 vlc_object_release( p_input_thread );
929 void libvlc_media_player_set_title( libvlc_media_player_t *p_mi,
932 input_thread_t *p_input_thread;
934 p_input_thread = libvlc_get_input_thread ( p_mi );
935 if( !p_input_thread )
938 var_SetInteger( p_input_thread, "title", i_title );
939 vlc_object_release( p_input_thread );
942 libvlc_event_t event;
943 event.type = libvlc_MediaPlayerTitleChanged;
944 event.u.media_player_title_changed.new_title = i_title;
945 libvlc_event_send( p_mi->p_event_manager, &event );
948 int libvlc_media_player_get_title( 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 i_title = var_GetInteger( p_input_thread, "title" );
958 vlc_object_release( p_input_thread );
963 int libvlc_media_player_get_title_count( libvlc_media_player_t *p_mi )
965 input_thread_t *p_input_thread;
968 p_input_thread = libvlc_get_input_thread ( p_mi );
969 if( !p_input_thread )
972 var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
973 vlc_object_release( p_input_thread );
978 void libvlc_media_player_next_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 "next-chapter":"next-title", true );
990 vlc_object_release( p_input_thread );
993 void libvlc_media_player_previous_chapter( libvlc_media_player_t *p_mi )
995 input_thread_t *p_input_thread;
997 p_input_thread = libvlc_get_input_thread ( p_mi );
998 if( !p_input_thread )
1001 int i_type = var_Type( p_input_thread, "next-chapter" );
1002 var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1003 "prev-chapter":"prev-title", true );
1005 vlc_object_release( p_input_thread );
1008 float libvlc_media_player_get_fps( libvlc_media_player_t *p_mi )
1010 input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1013 if( p_input_thread )
1015 if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1017 vlc_object_release( p_input_thread );
1022 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi )
1025 input_thread_t *p_input_thread =
1026 libvlc_get_input_thread ( p_mi );
1027 if ( !p_input_thread )
1030 b_will_play = !p_input_thread->b_die && !p_input_thread->b_dead;
1031 vlc_object_release( p_input_thread );
1036 int libvlc_media_player_set_rate( libvlc_media_player_t *p_mi, float rate )
1038 input_thread_t *p_input_thread;
1041 p_input_thread = libvlc_get_input_thread ( p_mi );
1042 if( !p_input_thread )
1045 b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1046 if( (rate < 0.0) && !b_can_rewind )
1048 vlc_object_release( p_input_thread );
1049 libvlc_printerr( "Invalid playback rate" );
1053 var_SetFloat( p_input_thread, "rate", rate );
1054 vlc_object_release( p_input_thread );
1058 float libvlc_media_player_get_rate( libvlc_media_player_t *p_mi )
1060 input_thread_t *p_input_thread;
1064 p_input_thread = libvlc_get_input_thread ( p_mi );
1065 if( !p_input_thread )
1066 return 0.0; /* rate < 0 indicates rewind */
1068 f_rate = var_GetFloat( p_input_thread, "rate" );
1069 b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1070 /* FIXME: why are negative values forbidden ?? (rewinding) */
1071 if( f_rate < 0 && !b_can_rewind )
1073 vlc_object_release( p_input_thread );
1076 vlc_object_release( p_input_thread );
1081 libvlc_state_t libvlc_media_player_get_state( libvlc_media_player_t *p_mi )
1084 libvlc_state_t state = p_mi->state;
1089 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi )
1091 input_thread_t *p_input_thread;
1094 p_input_thread = libvlc_get_input_thread ( p_mi );
1095 if ( !p_input_thread )
1097 b_seekable = var_GetBool( p_input_thread, "can-seek" );
1098 vlc_object_release( p_input_thread );
1103 /* internal function, used by audio, video */
1104 libvlc_track_description_t *
1105 libvlc_get_track_description( libvlc_media_player_t *p_mi,
1106 const char *psz_variable )
1108 input_thread_t *p_input = libvlc_get_input_thread( p_mi );
1109 libvlc_track_description_t *p_track_description = NULL,
1110 *p_actual, *p_previous;
1115 vlc_value_t val_list, text_list;
1116 var_Change( p_input, psz_variable, VLC_VAR_GETLIST, &val_list, &text_list);
1119 if( val_list.p_list->i_count <= 0 )
1122 p_track_description = ( libvlc_track_description_t * )
1123 malloc( sizeof( libvlc_track_description_t ) );
1124 if ( !p_track_description )
1126 libvlc_printerr( "Not enough memory" );
1129 p_actual = p_track_description;
1131 for( int i = 0; i < val_list.p_list->i_count; i++ )
1135 p_actual = ( libvlc_track_description_t * )
1136 malloc( sizeof( libvlc_track_description_t ) );
1139 libvlc_track_description_release( p_track_description );
1140 libvlc_printerr( "Not enough memory" );
1144 p_actual->i_id = val_list.p_list->p_values[i].i_int;
1145 p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1146 p_actual->p_next = NULL;
1148 p_previous->p_next = p_actual;
1149 p_previous = p_actual;
1154 var_FreeList( &val_list, &text_list );
1155 vlc_object_release( p_input );
1157 return p_track_description;
1160 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1162 libvlc_track_description_t *p_actual, *p_before;
1167 free( p_actual->psz_name );
1168 p_before = p_actual;
1169 p_actual = p_before->p_next;
1174 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi )
1176 input_thread_t *p_input_thread;
1179 p_input_thread = libvlc_get_input_thread ( p_mi );
1180 if ( !p_input_thread )
1182 b_can_pause = var_GetBool( p_input_thread, "can-pause" );
1183 vlc_object_release( p_input_thread );
1188 void libvlc_media_player_next_frame( libvlc_media_player_t *p_mi )
1190 input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1191 if( p_input_thread != NULL )
1193 var_TriggerCallback( p_input_thread, "frame-next" );
1194 vlc_object_release( p_input_thread );