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 );
137 return p_input_thread;
141 * Set the internal state of the media_player. (media player Internal)
143 * Function will lock the media_player.
145 static void set_state( libvlc_media_player_t *p_mi, libvlc_state_t state,
151 libvlc_media_t *media = p_mi->p_md;
153 libvlc_media_retain(media);
159 // Also set the state of the corresponding media
160 // This is strictly for convenience.
161 libvlc_media_set_state(media, state);
163 libvlc_media_release(media);
168 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
169 vlc_value_t oldval, vlc_value_t newval,
175 libvlc_media_player_t * p_mi = p_userdata;
176 libvlc_event_t event;
178 event.type = libvlc_MediaPlayerSeekableChanged;
179 event.u.media_player_seekable_changed.new_seekable = newval.b_bool;
181 libvlc_event_send( p_mi->p_event_manager, &event );
186 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
187 vlc_value_t oldval, vlc_value_t newval,
193 libvlc_media_player_t * p_mi = p_userdata;
194 libvlc_event_t event;
196 event.type = libvlc_MediaPlayerPausableChanged;
197 event.u.media_player_pausable_changed.new_pausable = newval.b_bool;
199 libvlc_event_send( p_mi->p_event_manager, &event );
204 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
205 vlc_value_t oldval, vlc_value_t newval,
209 input_thread_t * p_input = (input_thread_t *)p_this;
210 libvlc_media_player_t * p_mi = p_userdata;
211 libvlc_event_t event;
213 assert( !strcmp( psz_cmd, "intf-event" ) );
215 if( newval.i_int == INPUT_EVENT_STATE )
217 libvlc_state_t libvlc_state;
219 switch ( var_GetInteger( p_input, "state" ) )
222 libvlc_state = libvlc_NothingSpecial;
223 event.type = libvlc_MediaPlayerNothingSpecial;
226 libvlc_state = libvlc_Opening;
227 event.type = libvlc_MediaPlayerOpening;
230 libvlc_state = libvlc_Playing;
231 event.type = libvlc_MediaPlayerPlaying;
234 libvlc_state = libvlc_Paused;
235 event.type = libvlc_MediaPlayerPaused;
238 libvlc_state = libvlc_Ended;
239 event.type = libvlc_MediaPlayerEndReached;
242 libvlc_state = libvlc_Error;
243 event.type = libvlc_MediaPlayerEncounteredError;
250 set_state( p_mi, libvlc_state, false );
251 libvlc_event_send( p_mi->p_event_manager, &event );
253 else if( newval.i_int == INPUT_EVENT_ABORT )
255 libvlc_state_t libvlc_state = libvlc_Stopped;
256 event.type = libvlc_MediaPlayerStopped;
258 set_state( p_mi, libvlc_state, false );
259 libvlc_event_send( p_mi->p_event_manager, &event );
261 else if( newval.i_int == INPUT_EVENT_POSITION )
263 if( var_GetInteger( p_input, "state" ) != PLAYING_S )
264 return VLC_SUCCESS; /* Don't send the position while stopped */
267 event.type = libvlc_MediaPlayerPositionChanged;
268 event.u.media_player_position_changed.new_position =
269 var_GetFloat( p_input, "position" );
270 libvlc_event_send( p_mi->p_event_manager, &event );
273 event.type = libvlc_MediaPlayerTimeChanged;
274 event.u.media_player_time_changed.new_time =
275 from_mtime(var_GetTime( p_input, "time" ));
276 libvlc_event_send( p_mi->p_event_manager, &event );
278 else if( newval.i_int == INPUT_EVENT_LENGTH )
280 event.type = libvlc_MediaPlayerLengthChanged;
281 event.u.media_player_length_changed.new_length =
282 from_mtime(var_GetTime( p_input, "length" ));
283 libvlc_event_send( p_mi->p_event_manager, &event );
290 /**************************************************************************
291 * Snapshot Taken Event.
293 * FIXME: This snapshot API interface makes no sense in media_player.
294 *************************************************************************/
295 static int snapshot_was_taken(vlc_object_t *p_this, char const *psz_cmd,
296 vlc_value_t oldval, vlc_value_t newval, void *p_data )
298 VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED(p_this);
300 libvlc_media_player_t *mp = p_data;
301 libvlc_event_t event;
302 event.type = libvlc_MediaPlayerSnapshotTaken;
303 event.u.media_player_snapshot_taken.psz_filename = newval.psz_string;
304 libvlc_event_send(mp->p_event_manager, &event);
310 static void libvlc_media_player_destroy( libvlc_media_player_t * );
313 /**************************************************************************
314 * Create a Media Instance object.
317 * - All items created by _new start with a refcount set to 1.
318 * - Accessor _release decrease the refcount by 1, if after that
319 * operation the refcount is 0, the object is destroyed.
320 * - Accessor _retain increase the refcount by 1 (XXX: to implement)
322 * Object locking strategy:
323 * - No lock held while in constructor.
324 * - When accessing any member variable this lock is held. (XXX who locks?)
325 * - When attempting to destroy the object the lock is also held.
326 **************************************************************************/
327 libvlc_media_player_t *
328 libvlc_media_player_new( libvlc_instance_t *instance )
330 libvlc_media_player_t * mp;
334 mp = vlc_object_create (instance->p_libvlc_int, sizeof(*mp));
335 if (unlikely(mp == NULL))
337 libvlc_printerr("Not enough memory");
340 vlc_object_attach (mp, mp->p_libvlc);
343 var_Create (mp, "drawable-xid", VLC_VAR_INTEGER);
345 var_Create (mp, "drawable-hwnd", VLC_VAR_ADDRESS);
348 var_Create (mp, "drawable-agl", VLC_VAR_INTEGER);
349 var_Create (mp, "drawable-nsobject", VLC_VAR_ADDRESS);
352 /* Drawable input methods */
353 var_Create (mp, "keyboard-events", VLC_VAR_BOOL);
354 var_SetBool (mp, "keyboard-events", true);
355 var_Create (mp, "mouse-events", VLC_VAR_BOOL);
358 mp->state = libvlc_NothingSpecial;
359 mp->p_libvlc_instance = instance;
360 mp->p_input_thread = NULL;
361 mp->p_input_resource = NULL;
363 mp->p_event_manager = libvlc_event_manager_new(mp, instance);
364 if (unlikely(mp->p_event_manager == NULL))
366 vlc_object_release(mp);
369 vlc_mutex_init(&mp->object_lock);
371 register_event(mp, NothingSpecial);
372 register_event(mp, Opening);
373 register_event(mp, Buffering);
374 register_event(mp, Playing);
375 register_event(mp, Paused);
376 register_event(mp, Stopped);
377 register_event(mp, Forward);
378 register_event(mp, Backward);
379 register_event(mp, EndReached);
380 register_event(mp, EncounteredError);
381 register_event(mp, SeekableChanged);
383 register_event(mp, PositionChanged);
384 register_event(mp, TimeChanged);
385 register_event(mp, LengthChanged);
386 register_event(mp, TitleChanged);
387 register_event(mp, PausableChanged);
389 /* Snapshot initialization */
390 register_event(mp, SnapshotTaken);
392 register_event(mp, MediaChanged);
394 /* Attach a var callback to the global object to provide the glue between
395 * vout_thread that generates the event and media_player that re-emits it
396 * with its own event manager
398 * FIXME: It's unclear why we want to put this in public API, and why we
399 * want to expose it in such a limiting and ugly way.
401 var_AddCallback(mp->p_libvlc, "snapshot-file", snapshot_was_taken, mp);
406 /**************************************************************************
407 * Create a Media Instance object with a media descriptor.
408 **************************************************************************/
409 libvlc_media_player_t *
410 libvlc_media_player_new_from_media( libvlc_media_t * p_md )
412 libvlc_media_player_t * p_mi;
414 p_mi = libvlc_media_player_new( p_md->p_libvlc_instance );
418 libvlc_media_retain( p_md );
424 /**************************************************************************
425 * Destroy a Media Instance object (libvlc internal)
427 * Warning: No lock held here, but hey, this is internal. Caller must lock.
428 **************************************************************************/
429 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
433 /* Detach Callback from the main libvlc object */
434 var_DelCallback( p_mi->p_libvlc,
435 "snapshot-file", snapshot_was_taken, p_mi );
437 /* If the input thread hasn't been already deleted it means
438 * that the owners didn't stop the thread before releasing it. */
439 assert(!p_mi->p_input_thread);
441 /* Fallback for those who don't use NDEBUG */
442 if (p_mi->p_input_thread)
443 release_input_thread(p_mi, true);
445 if( p_mi->p_input_resource )
447 input_resource_Delete( p_mi->p_input_resource );
448 p_mi->p_input_resource = NULL;
451 libvlc_event_manager_release( p_mi->p_event_manager );
452 libvlc_media_release( p_mi->p_md );
453 vlc_mutex_destroy( &p_mi->object_lock );
454 vlc_object_release( p_mi );
457 /**************************************************************************
458 * Release a Media Instance object.
460 * Function does the locking.
461 **************************************************************************/
462 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
468 destroy = !--p_mi->i_refcount;
472 libvlc_media_player_destroy( p_mi );
475 /**************************************************************************
476 * Retain a Media Instance object.
478 * Caller must hold the lock.
479 **************************************************************************/
480 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
489 /**************************************************************************
490 * Set the Media descriptor associated with the instance.
492 * Enter without lock -- function will lock the object.
493 **************************************************************************/
494 void libvlc_media_player_set_media(
495 libvlc_media_player_t *p_mi,
496 libvlc_media_t *p_md )
500 /* FIXME I am not sure if it is a user request or on die(eof/error)
502 release_input_thread( p_mi,
503 p_mi->p_input_thread &&
504 !p_mi->p_input_thread->b_eof &&
505 !p_mi->p_input_thread->b_error );
507 set_state( p_mi, libvlc_NothingSpecial, true );
509 libvlc_media_release( p_mi->p_md );
515 return; /* It is ok to pass a NULL md */
518 libvlc_media_retain( p_md );
521 /* The policy here is to ignore that we were created using a different
522 * libvlc_instance, because we don't really care */
523 p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
527 /* Send an event for the newly available media */
528 libvlc_event_t event;
529 event.type = libvlc_MediaPlayerMediaChanged;
530 event.u.media_player_media_changed.new_media = p_md;
531 libvlc_event_send( p_mi->p_event_manager, &event );
535 /**************************************************************************
536 * Get the Media descriptor associated with the instance.
537 **************************************************************************/
539 libvlc_media_player_get_media( libvlc_media_player_t *p_mi )
546 libvlc_media_retain( p_mi->p_md );
551 /**************************************************************************
552 * Get the event Manager.
553 **************************************************************************/
554 libvlc_event_manager_t *
555 libvlc_media_player_event_manager( libvlc_media_player_t *p_mi )
557 return p_mi->p_event_manager;
560 /**************************************************************************
561 * Tell media player to start playing.
562 **************************************************************************/
563 int libvlc_media_player_play( libvlc_media_player_t *p_mi )
565 input_thread_t * p_input_thread;
567 if( (p_input_thread = libvlc_get_input_thread( p_mi )) )
569 /* A thread already exists, send it a play message */
570 input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
571 vlc_object_release( p_input_thread );
575 /* Ignore previous exception */
581 libvlc_printerr( "No associated media descriptor" );
585 p_mi->p_input_thread = input_Create( p_mi,
586 p_mi->p_md->p_input_item, NULL,
587 p_mi->p_input_resource );
588 if( !p_mi->p_input_thread )
591 libvlc_printerr( "Not enough memory" );
595 p_mi->p_input_resource = NULL;
596 p_input_thread = p_mi->p_input_thread;
598 var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
599 var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
600 var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
602 if( input_Start( p_input_thread ) )
604 vlc_object_release( p_input_thread );
605 p_mi->p_input_thread = NULL;
612 /**************************************************************************
614 **************************************************************************/
615 void libvlc_media_player_pause( libvlc_media_player_t *p_mi )
617 input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi );
618 if( !p_input_thread )
621 libvlc_state_t state = libvlc_media_player_get_state( p_mi );
622 if( state == libvlc_Playing || state == libvlc_Buffering )
624 if( libvlc_media_player_can_pause( p_mi ) )
625 input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
627 libvlc_media_player_stop( p_mi );
630 input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
632 vlc_object_release( p_input_thread );
635 /**************************************************************************
636 * Tells whether the media player is currently playing.
638 * Enter with lock held.
639 **************************************************************************/
640 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi )
642 libvlc_state_t state = libvlc_media_player_get_state( p_mi );
643 return (libvlc_Playing == state) || (libvlc_Buffering == state);
646 /**************************************************************************
648 **************************************************************************/
649 void libvlc_media_player_stop( libvlc_media_player_t *p_mi )
651 libvlc_state_t state = libvlc_media_player_get_state( p_mi );
654 release_input_thread( p_mi, true ); /* This will stop the input thread */
657 /* Force to go to stopped state, in case we were in Ended, or Error
659 if( state != libvlc_Stopped )
661 set_state( p_mi, libvlc_Stopped, false );
663 /* Construct and send the event */
664 libvlc_event_t event;
665 event.type = libvlc_MediaPlayerStopped;
666 libvlc_event_send( p_mi->p_event_manager, &event );
670 /**************************************************************************
672 **************************************************************************/
673 void libvlc_media_player_set_nsobject( libvlc_media_player_t *p_mi,
676 assert (p_mi != NULL);
678 var_SetAddress (p_mi, "drawable-nsobject", drawable);
680 (void) p_mi; (void)drawable;
684 /**************************************************************************
686 **************************************************************************/
687 void * libvlc_media_player_get_nsobject( libvlc_media_player_t *p_mi )
689 assert (p_mi != NULL);
691 return var_GetAddress (p_mi, "drawable-nsobject");
697 /**************************************************************************
699 **************************************************************************/
700 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
704 var_SetInteger (p_mi, "drawable-agl", drawable);
706 (void) p_mi; (void)drawable;
710 /**************************************************************************
712 **************************************************************************/
713 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
715 assert (p_mi != NULL);
717 return var_GetInteger (p_mi, "drawable-agl");
723 /**************************************************************************
725 **************************************************************************/
726 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
729 assert (p_mi != NULL);
730 var_SetInteger (p_mi, "drawable-xid", drawable);
733 /**************************************************************************
735 **************************************************************************/
736 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
738 return var_GetInteger (p_mi, "drawable-xid");
741 /**************************************************************************
743 **************************************************************************/
744 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
747 assert (p_mi != NULL);
749 var_SetAddress (p_mi, "drawable-hwnd", drawable);
751 (void) p_mi; (void) drawable;
755 /**************************************************************************
757 **************************************************************************/
758 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
760 assert (p_mi != NULL);
762 return var_GetAddress (p_mi, "drawable-hwnd");
768 /**************************************************************************
769 * Getters for stream information
770 **************************************************************************/
771 libvlc_time_t libvlc_media_player_get_length(
772 libvlc_media_player_t *p_mi )
774 input_thread_t *p_input_thread;
775 libvlc_time_t i_time;
777 p_input_thread = libvlc_get_input_thread ( p_mi );
778 if( !p_input_thread )
781 i_time = from_mtime(var_GetTime( p_input_thread, "length" ));
782 vlc_object_release( p_input_thread );
787 libvlc_time_t libvlc_media_player_get_time( libvlc_media_player_t *p_mi )
789 input_thread_t *p_input_thread;
790 libvlc_time_t i_time;
792 p_input_thread = libvlc_get_input_thread ( p_mi );
793 if( !p_input_thread )
796 i_time = from_mtime(var_GetTime( p_input_thread , "time" ));
797 vlc_object_release( p_input_thread );
801 void libvlc_media_player_set_time( libvlc_media_player_t *p_mi,
802 libvlc_time_t i_time )
804 input_thread_t *p_input_thread;
806 p_input_thread = libvlc_get_input_thread ( p_mi );
807 if( !p_input_thread )
810 var_SetTime( p_input_thread, "time", to_mtime(i_time) );
811 vlc_object_release( p_input_thread );
814 void libvlc_media_player_set_position( libvlc_media_player_t *p_mi,
817 input_thread_t *p_input_thread;
819 p_input_thread = libvlc_get_input_thread ( p_mi );
820 if( !p_input_thread )
823 var_SetFloat( p_input_thread, "position", position );
824 vlc_object_release( p_input_thread );
827 float libvlc_media_player_get_position( libvlc_media_player_t *p_mi )
829 input_thread_t *p_input_thread;
832 p_input_thread = libvlc_get_input_thread ( p_mi );
833 if( !p_input_thread )
836 f_position = var_GetFloat( p_input_thread, "position" );
837 vlc_object_release( p_input_thread );
842 void libvlc_media_player_set_chapter( libvlc_media_player_t *p_mi,
845 input_thread_t *p_input_thread;
847 p_input_thread = libvlc_get_input_thread ( p_mi );
848 if( !p_input_thread )
851 var_SetInteger( p_input_thread, "chapter", chapter );
852 vlc_object_release( p_input_thread );
855 int libvlc_media_player_get_chapter( libvlc_media_player_t *p_mi )
857 input_thread_t *p_input_thread;
860 p_input_thread = libvlc_get_input_thread ( p_mi );
861 if( !p_input_thread )
864 i_chapter = var_GetInteger( p_input_thread, "chapter" );
865 vlc_object_release( p_input_thread );
870 int libvlc_media_player_get_chapter_count( libvlc_media_player_t *p_mi )
872 input_thread_t *p_input_thread;
875 p_input_thread = libvlc_get_input_thread ( p_mi );
876 if( !p_input_thread )
879 var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
880 vlc_object_release( p_input_thread );
885 int libvlc_media_player_get_chapter_count_for_title(
886 libvlc_media_player_t *p_mi,
889 input_thread_t *p_input_thread;
892 p_input_thread = libvlc_get_input_thread ( p_mi );
893 if( !p_input_thread )
897 if( asprintf( &psz_name, "title %2i", i_title ) == -1 )
899 vlc_object_release( p_input_thread );
902 var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
903 vlc_object_release( p_input_thread );
909 void libvlc_media_player_set_title( libvlc_media_player_t *p_mi,
912 input_thread_t *p_input_thread;
914 p_input_thread = libvlc_get_input_thread ( p_mi );
915 if( !p_input_thread )
918 var_SetInteger( p_input_thread, "title", i_title );
919 vlc_object_release( p_input_thread );
922 libvlc_event_t event;
923 event.type = libvlc_MediaPlayerTitleChanged;
924 event.u.media_player_title_changed.new_title = i_title;
925 libvlc_event_send( p_mi->p_event_manager, &event );
928 int libvlc_media_player_get_title( libvlc_media_player_t *p_mi )
930 input_thread_t *p_input_thread;
933 p_input_thread = libvlc_get_input_thread ( p_mi );
934 if( !p_input_thread )
937 i_title = var_GetInteger( p_input_thread, "title" );
938 vlc_object_release( p_input_thread );
943 int libvlc_media_player_get_title_count( libvlc_media_player_t *p_mi )
945 input_thread_t *p_input_thread;
948 p_input_thread = libvlc_get_input_thread ( p_mi );
949 if( !p_input_thread )
952 var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
953 vlc_object_release( p_input_thread );
958 void libvlc_media_player_next_chapter( libvlc_media_player_t *p_mi )
960 input_thread_t *p_input_thread;
962 p_input_thread = libvlc_get_input_thread ( p_mi );
963 if( !p_input_thread )
966 int i_type = var_Type( p_input_thread, "next-chapter" );
967 var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
968 "next-chapter":"next-title", true );
970 vlc_object_release( p_input_thread );
973 void libvlc_media_player_previous_chapter( libvlc_media_player_t *p_mi )
975 input_thread_t *p_input_thread;
977 p_input_thread = libvlc_get_input_thread ( p_mi );
978 if( !p_input_thread )
981 int i_type = var_Type( p_input_thread, "next-chapter" );
982 var_SetBool( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
983 "prev-chapter":"prev-title", true );
985 vlc_object_release( p_input_thread );
988 float libvlc_media_player_get_fps( libvlc_media_player_t *p_mi )
990 input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
995 if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
997 vlc_object_release( p_input_thread );
1002 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi )
1005 input_thread_t *p_input_thread =
1006 libvlc_get_input_thread ( p_mi );
1007 if ( !p_input_thread )
1010 b_will_play = !p_input_thread->b_die && !p_input_thread->b_dead;
1011 vlc_object_release( p_input_thread );
1016 int libvlc_media_player_set_rate( libvlc_media_player_t *p_mi, float rate )
1018 input_thread_t *p_input_thread;
1021 p_input_thread = libvlc_get_input_thread ( p_mi );
1022 if( !p_input_thread )
1025 b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1026 if( (rate < 0.0) && !b_can_rewind )
1028 vlc_object_release( p_input_thread );
1029 libvlc_printerr( "Invalid playback rate" );
1033 var_SetFloat( p_input_thread, "rate", rate );
1034 vlc_object_release( p_input_thread );
1038 float libvlc_media_player_get_rate( libvlc_media_player_t *p_mi )
1040 input_thread_t *p_input_thread;
1044 p_input_thread = libvlc_get_input_thread ( p_mi );
1045 if( !p_input_thread )
1046 return 0.0; /* rate < 0 indicates rewind */
1048 f_rate = var_GetFloat( p_input_thread, "rate" );
1049 b_can_rewind = var_GetBool( p_input_thread, "can-rewind" );
1050 /* FIXME: why are negative values forbidden ?? (rewinding) */
1051 if( f_rate < 0 && !b_can_rewind )
1053 vlc_object_release( p_input_thread );
1056 vlc_object_release( p_input_thread );
1061 libvlc_state_t libvlc_media_player_get_state( libvlc_media_player_t *p_mi )
1064 libvlc_state_t state = p_mi->state;
1069 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi )
1071 input_thread_t *p_input_thread;
1074 p_input_thread = libvlc_get_input_thread ( p_mi );
1075 if ( !p_input_thread )
1077 b_seekable = var_GetBool( p_input_thread, "can-seek" );
1078 vlc_object_release( p_input_thread );
1083 /* internal function, used by audio, video */
1084 libvlc_track_description_t *
1085 libvlc_get_track_description( libvlc_media_player_t *p_mi,
1086 const char *psz_variable )
1088 input_thread_t *p_input = libvlc_get_input_thread( p_mi );
1089 libvlc_track_description_t *p_track_description = NULL,
1090 *p_actual, *p_previous;
1095 vlc_value_t val_list, text_list;
1096 var_Change( p_input, psz_variable, VLC_VAR_GETLIST, &val_list, &text_list);
1099 if( val_list.p_list->i_count <= 0 )
1102 p_track_description = ( libvlc_track_description_t * )
1103 malloc( sizeof( libvlc_track_description_t ) );
1104 if ( !p_track_description )
1106 libvlc_printerr( "Not enough memory" );
1109 p_actual = p_track_description;
1111 for( int i = 0; i < val_list.p_list->i_count; i++ )
1115 p_actual = ( libvlc_track_description_t * )
1116 malloc( sizeof( libvlc_track_description_t ) );
1119 libvlc_track_description_release( p_track_description );
1120 libvlc_printerr( "Not enough memory" );
1124 p_actual->i_id = val_list.p_list->p_values[i].i_int;
1125 p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1126 p_actual->p_next = NULL;
1128 p_previous->p_next = p_actual;
1129 p_previous = p_actual;
1134 var_FreeList( &val_list, &text_list );
1135 vlc_object_release( p_input );
1137 return p_track_description;
1140 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1142 libvlc_track_description_t *p_actual, *p_before;
1147 free( p_actual->psz_name );
1148 p_before = p_actual;
1149 p_actual = p_before->p_next;
1154 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi )
1156 input_thread_t *p_input_thread;
1159 p_input_thread = libvlc_get_input_thread ( p_mi );
1160 if ( !p_input_thread )
1162 b_can_pause = var_GetBool( p_input_thread, "can-pause" );
1163 vlc_object_release( p_input_thread );
1168 void libvlc_media_player_next_frame( libvlc_media_player_t *p_mi )
1170 input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1171 if( p_input_thread != NULL )
1173 var_TriggerCallback( p_input_thread, "frame-next" );
1174 vlc_object_release( p_input_thread );