1 /*****************************************************************************
2 * media_player.c: Libvlc API Media Instance management functions
3 *****************************************************************************
4 * Copyright (C) 2005-2011 VLC authors and VideoLAN
6 * Authors: Clément Stenac <zorglub@videolan.org>
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU Lesser General Public License as published by
10 * the Free Software Foundation; either version 2.1 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public License
19 * along with this program; if not, write to the Free Software Foundation,
20 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
21 *****************************************************************************/
29 #include <vlc/libvlc.h>
30 #include <vlc/libvlc_media.h>
31 #include <vlc/libvlc_events.h>
33 #include <vlc_demux.h>
34 #include <vlc_input.h>
39 #include "libvlc_internal.h"
40 #include "media_internal.h" // libvlc_media_set_state()
41 #include "media_player_internal.h"
44 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
45 vlc_value_t oldval, vlc_value_t newval,
48 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
49 vlc_value_t oldval, vlc_value_t newval,
52 input_scrambled_changed( vlc_object_t * p_this, char const * psz_cmd,
53 vlc_value_t oldval, vlc_value_t newval,
56 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
57 vlc_value_t oldval, vlc_value_t newval,
61 input_es_changed( vlc_object_t * p_this, char const * psz_cmd,
62 int action, vlc_value_t *p_val,
66 input_es_selected( vlc_object_t * p_this, char const * psz_cmd,
67 vlc_value_t oldval, vlc_value_t newval,
71 add_es_callbacks( input_thread_t *p_input_thread, libvlc_media_player_t *p_mi );
74 del_es_callbacks( input_thread_t *p_input_thread, libvlc_media_player_t *p_mi );
77 snapshot_was_taken( vlc_object_t *p_this, char const *psz_cmd,
78 vlc_value_t oldval, vlc_value_t newval, void *p_data );
80 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi );
86 #define register_event(a, b) __register_event(a, libvlc_MediaPlayer ## b)
87 static inline void __register_event(libvlc_media_player_t *mp, libvlc_event_type_t type)
89 libvlc_event_manager_register_event_type(mp->p_event_manager, type);
93 * The input lock protects the input and input resource pointer.
94 * It MUST NOT be used from callbacks.
96 * The object lock protects the reset, namely the media and the player state.
97 * It can, and usually needs to be taken from callbacks.
98 * The object lock can be acquired under the input lock... and consequently
99 * the opposite order is STRICTLY PROHIBITED.
101 static inline void lock(libvlc_media_player_t *mp)
103 vlc_mutex_lock(&mp->object_lock);
106 static inline void unlock(libvlc_media_player_t *mp)
108 vlc_mutex_unlock(&mp->object_lock);
111 static inline void lock_input(libvlc_media_player_t *mp)
113 vlc_mutex_lock(&mp->input.lock);
116 static inline void unlock_input(libvlc_media_player_t *mp)
118 vlc_mutex_unlock(&mp->input.lock);
122 * Release the associated input thread.
124 * Object lock is NOT held.
125 * Input lock is held or instance is being destroyed.
127 static void release_input_thread( libvlc_media_player_t *p_mi, bool b_input_abort )
131 input_thread_t *p_input_thread = p_mi->input.p_thread;
132 if( !p_input_thread )
134 p_mi->input.p_thread = NULL;
136 var_DelCallback( p_input_thread, "can-seek",
137 input_seekable_changed, p_mi );
138 var_DelCallback( p_input_thread, "can-pause",
139 input_pausable_changed, p_mi );
140 var_DelCallback( p_input_thread, "program-scrambled",
141 input_scrambled_changed, p_mi );
142 var_DelCallback( p_input_thread, "intf-event",
143 input_event_changed, p_mi );
144 del_es_callbacks( p_input_thread, p_mi );
146 /* We owned this one */
147 input_Stop( p_input_thread, b_input_abort );
148 input_Close( p_input_thread );
152 * Retrieve the input thread. Be sure to release the object
153 * once you are done with it. (libvlc Internal)
155 input_thread_t *libvlc_get_input_thread( libvlc_media_player_t *p_mi )
157 input_thread_t *p_input_thread;
162 p_input_thread = p_mi->input.p_thread;
164 vlc_object_hold( p_input_thread );
166 libvlc_printerr( "No active input" );
169 return p_input_thread;
173 * Set the internal state of the media_player. (media player Internal)
175 * Function will lock the media_player.
177 static void set_state( libvlc_media_player_t *p_mi, libvlc_state_t state,
184 libvlc_media_t *media = p_mi->p_md;
186 libvlc_media_retain(media);
193 // Also set the state of the corresponding media
194 // This is strictly for convenience.
195 libvlc_media_set_state(media, state);
197 libvlc_media_release(media);
202 input_seekable_changed( vlc_object_t * p_this, char const * psz_cmd,
203 vlc_value_t oldval, vlc_value_t newval,
209 libvlc_media_player_t * p_mi = p_userdata;
210 libvlc_event_t event;
212 event.type = libvlc_MediaPlayerSeekableChanged;
213 event.u.media_player_seekable_changed.new_seekable = newval.b_bool;
215 libvlc_event_send( p_mi->p_event_manager, &event );
220 input_pausable_changed( vlc_object_t * p_this, char const * psz_cmd,
221 vlc_value_t oldval, vlc_value_t newval,
227 libvlc_media_player_t * p_mi = p_userdata;
228 libvlc_event_t event;
230 event.type = libvlc_MediaPlayerPausableChanged;
231 event.u.media_player_pausable_changed.new_pausable = newval.b_bool;
233 libvlc_event_send( p_mi->p_event_manager, &event );
238 input_scrambled_changed( vlc_object_t * p_this, char const * psz_cmd,
239 vlc_value_t oldval, vlc_value_t newval,
245 libvlc_media_player_t * p_mi = p_userdata;
246 libvlc_event_t event;
248 event.type = libvlc_MediaPlayerScrambledChanged;
249 event.u.media_player_scrambled_changed.new_scrambled = newval.b_bool;
251 libvlc_event_send( p_mi->p_event_manager, &event );
256 input_event_changed( vlc_object_t * p_this, char const * psz_cmd,
257 vlc_value_t oldval, vlc_value_t newval,
261 input_thread_t * p_input = (input_thread_t *)p_this;
262 libvlc_media_player_t * p_mi = p_userdata;
263 libvlc_event_t event;
265 assert( !strcmp( psz_cmd, "intf-event" ) );
267 if( newval.i_int == INPUT_EVENT_STATE )
269 libvlc_state_t libvlc_state;
271 switch ( var_GetInteger( p_input, "state" ) )
274 libvlc_state = libvlc_NothingSpecial;
275 event.type = libvlc_MediaPlayerNothingSpecial;
278 libvlc_state = libvlc_Opening;
279 event.type = libvlc_MediaPlayerOpening;
282 libvlc_state = libvlc_Playing;
283 event.type = libvlc_MediaPlayerPlaying;
286 libvlc_state = libvlc_Paused;
287 event.type = libvlc_MediaPlayerPaused;
290 libvlc_state = libvlc_Ended;
291 event.type = libvlc_MediaPlayerEndReached;
294 libvlc_state = libvlc_Error;
295 event.type = libvlc_MediaPlayerEncounteredError;
302 set_state( p_mi, libvlc_state, false );
303 libvlc_event_send( p_mi->p_event_manager, &event );
305 else if( newval.i_int == INPUT_EVENT_ABORT )
307 libvlc_state_t libvlc_state = libvlc_Stopped;
308 event.type = libvlc_MediaPlayerStopped;
310 set_state( p_mi, libvlc_state, false );
311 libvlc_event_send( p_mi->p_event_manager, &event );
313 else if( newval.i_int == INPUT_EVENT_POSITION )
315 if( var_GetInteger( p_input, "state" ) != PLAYING_S )
316 return VLC_SUCCESS; /* Don't send the position while stopped */
319 event.type = libvlc_MediaPlayerPositionChanged;
320 event.u.media_player_position_changed.new_position =
321 var_GetFloat( p_input, "position" );
322 libvlc_event_send( p_mi->p_event_manager, &event );
325 event.type = libvlc_MediaPlayerTimeChanged;
326 event.u.media_player_time_changed.new_time =
327 from_mtime(var_GetTime( p_input, "time" ));
328 libvlc_event_send( p_mi->p_event_manager, &event );
330 else if( newval.i_int == INPUT_EVENT_LENGTH )
332 event.type = libvlc_MediaPlayerLengthChanged;
333 event.u.media_player_length_changed.new_length =
334 from_mtime(var_GetTime( p_input, "length" ));
335 libvlc_event_send( p_mi->p_event_manager, &event );
337 else if( newval.i_int == INPUT_EVENT_CACHE )
339 event.type = libvlc_MediaPlayerBuffering;
340 event.u.media_player_buffering.new_cache = (int)(100 *
341 var_GetFloat( p_input, "cache" ));
342 libvlc_event_send( p_mi->p_event_manager, &event );
344 else if( newval.i_int == INPUT_EVENT_VOUT )
346 vout_thread_t **pp_vout;
348 if( input_Control( p_input, INPUT_GET_VOUTS, &pp_vout, &i_vout ) )
354 for( size_t i = 0; i < i_vout; i++ )
355 vlc_object_release( pp_vout[i] );
359 event.type = libvlc_MediaPlayerVout;
360 event.u.media_player_vout.new_count = i_vout;
361 libvlc_event_send( p_mi->p_event_manager, &event );
367 static int track_type_from_name(const char *psz_name)
369 if( !strcmp( psz_name, "video-es" ) )
370 return libvlc_track_video;
371 else if( !strcmp( psz_name, "audio-es" ) )
372 return libvlc_track_audio;
373 else if( !strcmp( psz_name, "spu-es" ) )
374 return libvlc_track_text;
376 return libvlc_track_unknown;
379 static int input_es_changed( vlc_object_t *p_this,
386 libvlc_media_player_t *mp = p_userdata;
387 libvlc_event_t event;
389 /* Ignore the "Disable" element */
390 if (p_val && p_val->i_int < 0)
395 case VLC_VAR_ADDCHOICE:
396 event.type = libvlc_MediaPlayerESAdded;
398 case VLC_VAR_DELCHOICE:
399 case VLC_VAR_CLEARCHOICES:
400 event.type = libvlc_MediaPlayerESDeleted;
406 event.u.media_player_es_changed.i_type = track_type_from_name(psz_cmd);
409 if (action != VLC_VAR_CLEARCHOICES)
417 /* -1 means all ES tracks of this type were deleted. */
420 event.u.media_player_es_changed.i_id = i_id;
422 libvlc_event_send(mp->p_event_manager, &event);
428 input_es_selected( vlc_object_t * p_this, char const * psz_cmd,
429 vlc_value_t oldval, vlc_value_t newval,
434 libvlc_media_player_t *mp = p_userdata;
435 libvlc_event_t event;
437 event.type = libvlc_MediaPlayerESSelected;
438 event.u.media_player_es_changed.i_type = track_type_from_name(psz_cmd);
439 event.u.media_player_es_changed.i_id = newval.i_int;
441 libvlc_event_send(mp->p_event_manager, &event);
446 /**************************************************************************
447 * Snapshot Taken Event.
449 * FIXME: This snapshot API interface makes no sense in media_player.
450 *************************************************************************/
451 static int snapshot_was_taken(vlc_object_t *p_this, char const *psz_cmd,
452 vlc_value_t oldval, vlc_value_t newval, void *p_data )
454 VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval); VLC_UNUSED(p_this);
456 libvlc_media_player_t *mp = p_data;
457 libvlc_event_t event;
458 event.type = libvlc_MediaPlayerSnapshotTaken;
459 event.u.media_player_snapshot_taken.psz_filename = newval.psz_string;
460 libvlc_event_send(mp->p_event_manager, &event);
465 /**************************************************************************
466 * Create a Media Instance object.
469 * - All items created by _new start with a refcount set to 1.
470 * - Accessor _release decrease the refcount by 1, if after that
471 * operation the refcount is 0, the object is destroyed.
472 * - Accessor _retain increase the refcount by 1 (XXX: to implement)
474 * Object locking strategy:
475 * - No lock held while in constructor.
476 * - When accessing any member variable this lock is held. (XXX who locks?)
477 * - When attempting to destroy the object the lock is also held.
478 **************************************************************************/
479 libvlc_media_player_t *
480 libvlc_media_player_new( libvlc_instance_t *instance )
482 libvlc_media_player_t * mp;
486 mp = vlc_object_create (instance->p_libvlc_int, sizeof(*mp));
487 if (unlikely(mp == NULL))
489 libvlc_printerr("Not enough memory");
494 var_Create (mp, "rate", VLC_VAR_FLOAT|VLC_VAR_DOINHERIT);
497 var_Create (mp, "vout", VLC_VAR_STRING|VLC_VAR_DOINHERIT);
498 var_Create (mp, "window", VLC_VAR_STRING);
499 var_Create (mp, "vmem-lock", VLC_VAR_ADDRESS);
500 var_Create (mp, "vmem-unlock", VLC_VAR_ADDRESS);
501 var_Create (mp, "vmem-display", VLC_VAR_ADDRESS);
502 var_Create (mp, "vmem-data", VLC_VAR_ADDRESS);
503 var_Create (mp, "vmem-setup", VLC_VAR_ADDRESS);
504 var_Create (mp, "vmem-cleanup", VLC_VAR_ADDRESS);
505 var_Create (mp, "vmem-chroma", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
506 var_Create (mp, "vmem-width", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
507 var_Create (mp, "vmem-height", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
508 var_Create (mp, "vmem-pitch", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
509 var_Create (mp, "avcodec-hw", VLC_VAR_STRING);
510 var_Create (mp, "drawable-xid", VLC_VAR_INTEGER);
511 #if defined (_WIN32) || defined (__OS2__)
512 var_Create (mp, "drawable-hwnd", VLC_VAR_INTEGER);
515 var_Create (mp, "drawable-agl", VLC_VAR_INTEGER);
516 var_Create (mp, "drawable-nsobject", VLC_VAR_ADDRESS);
519 var_Create (mp, "keyboard-events", VLC_VAR_BOOL);
520 var_SetBool (mp, "keyboard-events", true);
521 var_Create (mp, "mouse-events", VLC_VAR_BOOL);
522 var_SetBool (mp, "mouse-events", true);
524 var_Create (mp, "fullscreen", VLC_VAR_BOOL);
525 var_Create (mp, "autoscale", VLC_VAR_BOOL | VLC_VAR_DOINHERIT);
526 var_Create (mp, "zoom", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
527 var_Create (mp, "aspect-ratio", VLC_VAR_STRING);
528 var_Create (mp, "crop", VLC_VAR_STRING);
529 var_Create (mp, "deinterlace", VLC_VAR_INTEGER);
530 var_Create (mp, "deinterlace-mode", VLC_VAR_STRING);
532 var_Create (mp, "vbi-page", VLC_VAR_INTEGER);
534 var_Create (mp, "marq-marquee", VLC_VAR_STRING);
535 var_Create (mp, "marq-color", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
536 var_Create (mp, "marq-opacity", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
537 var_Create (mp, "marq-position", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
538 var_Create (mp, "marq-refresh", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
539 var_Create (mp, "marq-size", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
540 var_Create (mp, "marq-timeout", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
541 var_Create (mp, "marq-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
542 var_Create (mp, "marq-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
544 var_Create (mp, "logo-file", VLC_VAR_STRING);
545 var_Create (mp, "logo-x", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
546 var_Create (mp, "logo-y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
547 var_Create (mp, "logo-delay", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
548 var_Create (mp, "logo-repeat", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
549 var_Create (mp, "logo-opacity", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
550 var_Create (mp, "logo-position", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
552 var_Create (mp, "contrast", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
553 var_Create (mp, "brightness", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
554 var_Create (mp, "hue", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
555 var_Create (mp, "saturation", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
556 var_Create (mp, "gamma", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT);
559 var_Create (mp, "aout", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
560 var_Create (mp, "mute", VLC_VAR_BOOL);
561 var_Create (mp, "volume", VLC_VAR_FLOAT);
562 var_Create (mp, "corks", VLC_VAR_INTEGER);
563 var_Create (mp, "audio-filter", VLC_VAR_STRING);
564 var_Create (mp, "amem-data", VLC_VAR_ADDRESS);
565 var_Create (mp, "amem-setup", VLC_VAR_ADDRESS);
566 var_Create (mp, "amem-cleanup", VLC_VAR_ADDRESS);
567 var_Create (mp, "amem-play", VLC_VAR_ADDRESS);
568 var_Create (mp, "amem-pause", VLC_VAR_ADDRESS);
569 var_Create (mp, "amem-resume", VLC_VAR_ADDRESS);
570 var_Create (mp, "amem-flush", VLC_VAR_ADDRESS);
571 var_Create (mp, "amem-drain", VLC_VAR_ADDRESS);
572 var_Create (mp, "amem-set-volume", VLC_VAR_ADDRESS);
573 var_Create (mp, "amem-format", VLC_VAR_STRING | VLC_VAR_DOINHERIT);
574 var_Create (mp, "amem-rate", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
575 var_Create (mp, "amem-channels", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
578 var_Create (mp, "video-title-show", VLC_VAR_BOOL);
579 var_Create (mp, "video-title-position", VLC_VAR_INTEGER);
580 var_Create (mp, "video-title-timeout", VLC_VAR_INTEGER);
583 var_Create (mp, "equalizer-preamp", VLC_VAR_FLOAT);
584 var_Create (mp, "equalizer-vlcfreqs", VLC_VAR_BOOL);
585 var_Create (mp, "equalizer-bands", VLC_VAR_STRING);
588 mp->state = libvlc_NothingSpecial;
589 mp->p_libvlc_instance = instance;
590 mp->input.p_thread = NULL;
591 mp->input.p_resource = input_resource_New(VLC_OBJECT(mp));
592 if (unlikely(mp->input.p_resource == NULL))
594 vlc_object_release(mp);
597 audio_output_t *aout = input_resource_GetAout(mp->input.p_resource);
599 input_resource_PutAout(mp->input.p_resource, aout);
601 vlc_mutex_init (&mp->input.lock);
603 mp->p_event_manager = libvlc_event_manager_new(mp, instance);
604 if (unlikely(mp->p_event_manager == NULL))
606 input_resource_Release(mp->input.p_resource);
607 vlc_object_release(mp);
610 vlc_mutex_init(&mp->object_lock);
612 register_event(mp, NothingSpecial);
613 register_event(mp, Opening);
614 register_event(mp, Buffering);
615 register_event(mp, Playing);
616 register_event(mp, Paused);
617 register_event(mp, Stopped);
618 register_event(mp, Forward);
619 register_event(mp, Backward);
620 register_event(mp, EndReached);
621 register_event(mp, EncounteredError);
622 register_event(mp, SeekableChanged);
624 register_event(mp, PositionChanged);
625 register_event(mp, TimeChanged);
626 register_event(mp, LengthChanged);
627 register_event(mp, TitleChanged);
628 register_event(mp, PausableChanged);
630 register_event(mp, Vout);
631 register_event(mp, ScrambledChanged);
632 register_event(mp, ESAdded);
633 register_event(mp, ESDeleted);
634 register_event(mp, ESSelected);
636 /* Snapshot initialization */
637 register_event(mp, SnapshotTaken);
639 register_event(mp, MediaChanged);
641 /* Attach a var callback to the global object to provide the glue between
642 * vout_thread that generates the event and media_player that re-emits it
643 * with its own event manager
645 * FIXME: It's unclear why we want to put this in public API, and why we
646 * want to expose it in such a limiting and ugly way.
648 var_AddCallback(mp->p_libvlc, "snapshot-file", snapshot_was_taken, mp);
650 libvlc_retain(instance);
654 /**************************************************************************
655 * Create a Media Instance object with a media descriptor.
656 **************************************************************************/
657 libvlc_media_player_t *
658 libvlc_media_player_new_from_media( libvlc_media_t * p_md )
660 libvlc_media_player_t * p_mi;
662 p_mi = libvlc_media_player_new( p_md->p_libvlc_instance );
666 libvlc_media_retain( p_md );
672 /**************************************************************************
673 * Destroy a Media Instance object (libvlc internal)
675 * Warning: No lock held here, but hey, this is internal. Caller must lock.
676 **************************************************************************/
677 static void libvlc_media_player_destroy( libvlc_media_player_t *p_mi )
681 /* Detach Callback from the main libvlc object */
682 var_DelCallback( p_mi->p_libvlc,
683 "snapshot-file", snapshot_was_taken, p_mi );
685 /* No need for lock_input() because no other threads knows us anymore */
686 if( p_mi->input.p_thread )
687 release_input_thread(p_mi, true);
688 input_resource_Terminate( p_mi->input.p_resource );
689 input_resource_Release( p_mi->input.p_resource );
690 vlc_mutex_destroy( &p_mi->input.lock );
692 libvlc_event_manager_release( p_mi->p_event_manager );
693 libvlc_media_release( p_mi->p_md );
694 vlc_mutex_destroy( &p_mi->object_lock );
696 libvlc_instance_t *instance = p_mi->p_libvlc_instance;
697 vlc_object_release( p_mi );
698 libvlc_release(instance);
701 /**************************************************************************
702 * Release a Media Instance object.
704 * Function does the locking.
705 **************************************************************************/
706 void libvlc_media_player_release( libvlc_media_player_t *p_mi )
712 destroy = !--p_mi->i_refcount;
716 libvlc_media_player_destroy( p_mi );
719 /**************************************************************************
720 * Retain a Media Instance object.
722 * Caller must hold the lock.
723 **************************************************************************/
724 void libvlc_media_player_retain( libvlc_media_player_t *p_mi )
733 /**************************************************************************
734 * Set the Media descriptor associated with the instance.
736 * Enter without lock -- function will lock the object.
737 **************************************************************************/
738 void libvlc_media_player_set_media(
739 libvlc_media_player_t *p_mi,
740 libvlc_media_t *p_md )
744 /* FIXME I am not sure if it is a user request or on die(eof/error)
746 release_input_thread( p_mi,
747 p_mi->input.p_thread &&
748 !p_mi->input.p_thread->b_eof &&
749 !p_mi->input.p_thread->b_error );
752 set_state( p_mi, libvlc_NothingSpecial, true );
753 unlock_input( p_mi );
755 libvlc_media_release( p_mi->p_md );
761 return; /* It is ok to pass a NULL md */
764 libvlc_media_retain( p_md );
767 /* The policy here is to ignore that we were created using a different
768 * libvlc_instance, because we don't really care */
769 p_mi->p_libvlc_instance = p_md->p_libvlc_instance;
773 /* Send an event for the newly available media */
774 libvlc_event_t event;
775 event.type = libvlc_MediaPlayerMediaChanged;
776 event.u.media_player_media_changed.new_media = p_md;
777 libvlc_event_send( p_mi->p_event_manager, &event );
781 /**************************************************************************
782 * Get the Media descriptor associated with the instance.
783 **************************************************************************/
785 libvlc_media_player_get_media( libvlc_media_player_t *p_mi )
792 libvlc_media_retain( p_m );
798 /**************************************************************************
799 * Get the event Manager.
800 **************************************************************************/
801 libvlc_event_manager_t *
802 libvlc_media_player_event_manager( libvlc_media_player_t *p_mi )
804 return p_mi->p_event_manager;
807 static void add_es_callbacks( input_thread_t *p_input_thread, libvlc_media_player_t *p_mi )
809 var_AddListCallback( p_input_thread, "video-es", input_es_changed, p_mi );
810 var_AddListCallback( p_input_thread, "audio-es", input_es_changed, p_mi );
811 var_AddListCallback( p_input_thread, "spu-es", input_es_changed, p_mi );
812 var_AddCallback( p_input_thread, "video-es", input_es_selected, p_mi );
813 var_AddCallback( p_input_thread, "audio-es", input_es_selected, p_mi );
814 var_AddCallback( p_input_thread, "spu-es", input_es_selected, p_mi );
817 static void del_es_callbacks( input_thread_t *p_input_thread, libvlc_media_player_t *p_mi )
819 var_DelListCallback( p_input_thread, "video-es", input_es_changed, p_mi );
820 var_DelListCallback( p_input_thread, "audio-es", input_es_changed, p_mi );
821 var_DelListCallback( p_input_thread, "spu-es", input_es_changed, p_mi );
822 var_DelCallback( p_input_thread, "video-es", input_es_selected, p_mi );
823 var_DelCallback( p_input_thread, "audio-es", input_es_selected, p_mi );
824 var_DelCallback( p_input_thread, "spu-es", input_es_selected, p_mi );
827 /**************************************************************************
828 * Tell media player to start playing.
829 **************************************************************************/
830 int libvlc_media_player_play( libvlc_media_player_t *p_mi )
834 input_thread_t *p_input_thread = p_mi->input.p_thread;
837 /* A thread already exists, send it a play message */
838 input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
839 unlock_input( p_mi );
843 /* Ignore previous exception */
849 unlock_input( p_mi );
850 libvlc_printerr( "No associated media descriptor" );
854 p_input_thread = input_Create( p_mi, p_mi->p_md->p_input_item, NULL,
855 p_mi->input.p_resource );
857 if( !p_input_thread )
860 libvlc_printerr( "Not enough memory" );
864 var_AddCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
865 var_AddCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
866 var_AddCallback( p_input_thread, "program-scrambled", input_scrambled_changed, p_mi );
867 var_AddCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
868 add_es_callbacks( p_input_thread, p_mi );
870 if( input_Start( p_input_thread ) )
873 del_es_callbacks( p_input_thread, p_mi );
874 var_DelCallback( p_input_thread, "intf-event", input_event_changed, p_mi );
875 var_DelCallback( p_input_thread, "can-pause", input_pausable_changed, p_mi );
876 var_DelCallback( p_input_thread, "program-scrambled", input_scrambled_changed, p_mi );
877 var_DelCallback( p_input_thread, "can-seek", input_seekable_changed, p_mi );
878 vlc_object_release( p_input_thread );
879 libvlc_printerr( "Input initialization failure" );
882 p_mi->input.p_thread = p_input_thread;
887 void libvlc_media_player_set_pause( libvlc_media_player_t *p_mi, int paused )
889 input_thread_t * p_input_thread = libvlc_get_input_thread( p_mi );
890 if( !p_input_thread )
893 libvlc_state_t state = libvlc_media_player_get_state( p_mi );
894 if( state == libvlc_Playing || state == libvlc_Buffering )
898 if( libvlc_media_player_can_pause( p_mi ) )
899 input_Control( p_input_thread, INPUT_SET_STATE, PAUSE_S );
901 input_Stop( p_input_thread, true );
907 input_Control( p_input_thread, INPUT_SET_STATE, PLAYING_S );
910 vlc_object_release( p_input_thread );
913 /**************************************************************************
915 **************************************************************************/
916 void libvlc_media_player_pause( libvlc_media_player_t *p_mi )
918 libvlc_state_t state = libvlc_media_player_get_state( p_mi );
919 bool playing = (state == libvlc_Playing || state == libvlc_Buffering);
921 libvlc_media_player_set_pause( p_mi, playing );
924 /**************************************************************************
925 * Tells whether the media player is currently playing.
927 * Enter with lock held.
928 **************************************************************************/
929 int libvlc_media_player_is_playing( libvlc_media_player_t *p_mi )
931 libvlc_state_t state = libvlc_media_player_get_state( p_mi );
932 return (libvlc_Playing == state) || (libvlc_Buffering == state);
935 /**************************************************************************
937 **************************************************************************/
938 void libvlc_media_player_stop( libvlc_media_player_t *p_mi )
940 libvlc_state_t state = libvlc_media_player_get_state( p_mi );
943 release_input_thread( p_mi, true ); /* This will stop the input thread */
945 /* Force to go to stopped state, in case we were in Ended, or Error
947 if( state != libvlc_Stopped )
949 set_state( p_mi, libvlc_Stopped, false );
951 /* Construct and send the event */
952 libvlc_event_t event;
953 event.type = libvlc_MediaPlayerStopped;
954 libvlc_event_send( p_mi->p_event_manager, &event );
957 input_resource_Terminate( p_mi->input.p_resource );
962 void libvlc_video_set_callbacks( libvlc_media_player_t *mp,
963 void *(*lock_cb) (void *, void **),
964 void (*unlock_cb) (void *, void *, void *const *),
965 void (*display_cb) (void *, void *),
968 var_SetAddress( mp, "vmem-lock", lock_cb );
969 var_SetAddress( mp, "vmem-unlock", unlock_cb );
970 var_SetAddress( mp, "vmem-display", display_cb );
971 var_SetAddress( mp, "vmem-data", opaque );
972 var_SetString( mp, "vout", "vmem" );
973 var_SetString( mp, "avcodec-hw", "none" );
976 void libvlc_video_set_format_callbacks( libvlc_media_player_t *mp,
977 libvlc_video_format_cb setup,
978 libvlc_video_cleanup_cb cleanup )
980 var_SetAddress( mp, "vmem-setup", setup );
981 var_SetAddress( mp, "vmem-cleanup", cleanup );
984 void libvlc_video_set_format( libvlc_media_player_t *mp, const char *chroma,
985 unsigned width, unsigned height, unsigned pitch )
987 var_SetString( mp, "vmem-chroma", chroma );
988 var_SetInteger( mp, "vmem-width", width );
989 var_SetInteger( mp, "vmem-height", height );
990 var_SetInteger( mp, "vmem-pitch", pitch );
993 /**************************************************************************
995 **************************************************************************/
996 void libvlc_media_player_set_nsobject( libvlc_media_player_t *p_mi,
999 assert (p_mi != NULL);
1001 var_SetAddress (p_mi, "drawable-nsobject", drawable);
1003 (void) p_mi; (void)drawable;
1007 /**************************************************************************
1009 **************************************************************************/
1010 void * libvlc_media_player_get_nsobject( libvlc_media_player_t *p_mi )
1012 assert (p_mi != NULL);
1014 return var_GetAddress (p_mi, "drawable-nsobject");
1020 /**************************************************************************
1022 **************************************************************************/
1023 void libvlc_media_player_set_agl( libvlc_media_player_t *p_mi,
1027 var_SetInteger (p_mi, "drawable-agl", drawable);
1029 (void) p_mi; (void)drawable;
1033 /**************************************************************************
1035 **************************************************************************/
1036 uint32_t libvlc_media_player_get_agl( libvlc_media_player_t *p_mi )
1038 assert (p_mi != NULL);
1040 return var_GetInteger (p_mi, "drawable-agl");
1046 /**************************************************************************
1048 **************************************************************************/
1049 void libvlc_media_player_set_xwindow( libvlc_media_player_t *p_mi,
1052 assert (p_mi != NULL);
1054 var_SetString (p_mi, "avcodec-hw", "");
1055 var_SetString (p_mi, "vout", drawable ? "xid" : "any");
1056 var_SetString (p_mi, "window", drawable ? "embed-xid,any" : "any");
1057 var_SetInteger (p_mi, "drawable-xid", drawable);
1060 /**************************************************************************
1062 **************************************************************************/
1063 uint32_t libvlc_media_player_get_xwindow( libvlc_media_player_t *p_mi )
1065 return var_GetInteger (p_mi, "drawable-xid");
1068 /**************************************************************************
1070 **************************************************************************/
1071 void libvlc_media_player_set_hwnd( libvlc_media_player_t *p_mi,
1074 assert (p_mi != NULL);
1075 #if defined (_WIN32) || defined (__OS2__)
1076 var_SetString (p_mi, "window",
1077 (drawable != NULL) ? "embed-hwnd,any" : "");
1078 var_SetInteger (p_mi, "drawable-hwnd", (uintptr_t)drawable);
1080 (void) p_mi; (void) drawable;
1084 /**************************************************************************
1086 **************************************************************************/
1087 void *libvlc_media_player_get_hwnd( libvlc_media_player_t *p_mi )
1089 assert (p_mi != NULL);
1090 #if defined (_WIN32) || defined (__OS2__)
1091 return (void *)(uintptr_t)var_GetInteger (p_mi, "drawable-hwnd");
1097 void libvlc_audio_set_callbacks( libvlc_media_player_t *mp,
1098 libvlc_audio_play_cb play_cb,
1099 libvlc_audio_pause_cb pause_cb,
1100 libvlc_audio_resume_cb resume_cb,
1101 libvlc_audio_flush_cb flush_cb,
1102 libvlc_audio_drain_cb drain_cb,
1105 var_SetAddress( mp, "amem-play", play_cb );
1106 var_SetAddress( mp, "amem-pause", pause_cb );
1107 var_SetAddress( mp, "amem-resume", resume_cb );
1108 var_SetAddress( mp, "amem-flush", flush_cb );
1109 var_SetAddress( mp, "amem-drain", drain_cb );
1110 var_SetAddress( mp, "amem-data", opaque );
1111 var_SetString( mp, "aout", "amem,none" );
1113 input_resource_ResetAout(mp->input.p_resource);
1116 void libvlc_audio_set_volume_callback( libvlc_media_player_t *mp,
1117 libvlc_audio_set_volume_cb cb )
1119 var_SetAddress( mp, "amem-set-volume", cb );
1121 input_resource_ResetAout(mp->input.p_resource);
1124 void libvlc_audio_set_format_callbacks( libvlc_media_player_t *mp,
1125 libvlc_audio_setup_cb setup,
1126 libvlc_audio_cleanup_cb cleanup )
1128 var_SetAddress( mp, "amem-setup", setup );
1129 var_SetAddress( mp, "amem-cleanup", cleanup );
1131 input_resource_ResetAout(mp->input.p_resource);
1134 void libvlc_audio_set_format( libvlc_media_player_t *mp, const char *format,
1135 unsigned rate, unsigned channels )
1137 var_SetString( mp, "amem-format", format );
1138 var_SetInteger( mp, "amem-rate", rate );
1139 var_SetInteger( mp, "amem-channels", channels );
1141 input_resource_ResetAout(mp->input.p_resource);
1145 /**************************************************************************
1146 * Getters for stream information
1147 **************************************************************************/
1148 libvlc_time_t libvlc_media_player_get_length(
1149 libvlc_media_player_t *p_mi )
1151 input_thread_t *p_input_thread;
1152 libvlc_time_t i_time;
1154 p_input_thread = libvlc_get_input_thread ( p_mi );
1155 if( !p_input_thread )
1158 i_time = from_mtime(var_GetTime( p_input_thread, "length" ));
1159 vlc_object_release( p_input_thread );
1164 libvlc_time_t libvlc_media_player_get_time( libvlc_media_player_t *p_mi )
1166 input_thread_t *p_input_thread;
1167 libvlc_time_t i_time;
1169 p_input_thread = libvlc_get_input_thread ( p_mi );
1170 if( !p_input_thread )
1173 i_time = from_mtime(var_GetTime( p_input_thread , "time" ));
1174 vlc_object_release( p_input_thread );
1178 void libvlc_media_player_set_time( libvlc_media_player_t *p_mi,
1179 libvlc_time_t i_time )
1181 input_thread_t *p_input_thread;
1183 p_input_thread = libvlc_get_input_thread ( p_mi );
1184 if( !p_input_thread )
1187 var_SetTime( p_input_thread, "time", to_mtime(i_time) );
1188 vlc_object_release( p_input_thread );
1191 void libvlc_media_player_set_position( libvlc_media_player_t *p_mi,
1194 input_thread_t *p_input_thread;
1196 p_input_thread = libvlc_get_input_thread ( p_mi );
1197 if( !p_input_thread )
1200 var_SetFloat( p_input_thread, "position", position );
1201 vlc_object_release( p_input_thread );
1204 float libvlc_media_player_get_position( libvlc_media_player_t *p_mi )
1206 input_thread_t *p_input_thread;
1209 p_input_thread = libvlc_get_input_thread ( p_mi );
1210 if( !p_input_thread )
1213 f_position = var_GetFloat( p_input_thread, "position" );
1214 vlc_object_release( p_input_thread );
1219 void libvlc_media_player_set_chapter( libvlc_media_player_t *p_mi,
1222 input_thread_t *p_input_thread;
1224 p_input_thread = libvlc_get_input_thread ( p_mi );
1225 if( !p_input_thread )
1228 var_SetInteger( p_input_thread, "chapter", chapter );
1229 vlc_object_release( p_input_thread );
1232 int libvlc_media_player_get_chapter( libvlc_media_player_t *p_mi )
1234 input_thread_t *p_input_thread;
1237 p_input_thread = libvlc_get_input_thread ( p_mi );
1238 if( !p_input_thread )
1241 i_chapter = var_GetInteger( p_input_thread, "chapter" );
1242 vlc_object_release( p_input_thread );
1247 int libvlc_media_player_get_chapter_count( libvlc_media_player_t *p_mi )
1249 input_thread_t *p_input_thread;
1252 p_input_thread = libvlc_get_input_thread ( p_mi );
1253 if( !p_input_thread )
1256 int i_ret = var_Change( p_input_thread, "chapter", VLC_VAR_CHOICESCOUNT, &val, NULL );
1257 vlc_object_release( p_input_thread );
1259 return i_ret == VLC_SUCCESS ? val.i_int : -1;
1262 int libvlc_media_player_get_chapter_count_for_title(
1263 libvlc_media_player_t *p_mi,
1266 input_thread_t *p_input_thread;
1269 p_input_thread = libvlc_get_input_thread ( p_mi );
1270 if( !p_input_thread )
1274 if( asprintf( &psz_name, "title %2i", i_title ) == -1 )
1276 vlc_object_release( p_input_thread );
1279 int i_ret = var_Change( p_input_thread, psz_name, VLC_VAR_CHOICESCOUNT, &val, NULL );
1280 vlc_object_release( p_input_thread );
1283 return i_ret == VLC_SUCCESS ? val.i_int : -1;
1286 void libvlc_media_player_set_title( libvlc_media_player_t *p_mi,
1289 input_thread_t *p_input_thread;
1291 p_input_thread = libvlc_get_input_thread ( p_mi );
1292 if( !p_input_thread )
1295 var_SetInteger( p_input_thread, "title", i_title );
1296 vlc_object_release( p_input_thread );
1299 libvlc_event_t event;
1300 event.type = libvlc_MediaPlayerTitleChanged;
1301 event.u.media_player_title_changed.new_title = i_title;
1302 libvlc_event_send( p_mi->p_event_manager, &event );
1305 int libvlc_media_player_get_title( libvlc_media_player_t *p_mi )
1307 input_thread_t *p_input_thread;
1310 p_input_thread = libvlc_get_input_thread ( p_mi );
1311 if( !p_input_thread )
1314 i_title = var_GetInteger( p_input_thread, "title" );
1315 vlc_object_release( p_input_thread );
1320 int libvlc_media_player_get_title_count( libvlc_media_player_t *p_mi )
1322 input_thread_t *p_input_thread;
1325 p_input_thread = libvlc_get_input_thread ( p_mi );
1326 if( !p_input_thread )
1329 int i_ret = var_Change( p_input_thread, "title", VLC_VAR_CHOICESCOUNT, &val, NULL );
1330 vlc_object_release( p_input_thread );
1332 return i_ret == VLC_SUCCESS ? val.i_int : -1;
1335 void libvlc_media_player_next_chapter( libvlc_media_player_t *p_mi )
1337 input_thread_t *p_input_thread;
1339 p_input_thread = libvlc_get_input_thread ( p_mi );
1340 if( !p_input_thread )
1343 int i_type = var_Type( p_input_thread, "next-chapter" );
1344 var_TriggerCallback( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1345 "next-chapter":"next-title" );
1347 vlc_object_release( p_input_thread );
1350 void libvlc_media_player_previous_chapter( libvlc_media_player_t *p_mi )
1352 input_thread_t *p_input_thread;
1354 p_input_thread = libvlc_get_input_thread ( p_mi );
1355 if( !p_input_thread )
1358 int i_type = var_Type( p_input_thread, "next-chapter" );
1359 var_TriggerCallback( p_input_thread, (i_type & VLC_VAR_TYPE) != 0 ?
1360 "prev-chapter":"prev-title" );
1362 vlc_object_release( p_input_thread );
1365 float libvlc_media_player_get_fps( libvlc_media_player_t *p_mi )
1367 input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1370 if( p_input_thread )
1372 if( input_Control( p_input_thread, INPUT_GET_VIDEO_FPS, &f_fps ) )
1374 vlc_object_release( p_input_thread );
1379 int libvlc_media_player_will_play( libvlc_media_player_t *p_mi )
1382 input_thread_t *p_input_thread =
1383 libvlc_get_input_thread ( p_mi );
1384 if ( !p_input_thread )
1387 b_will_play = !p_input_thread->b_dead;
1388 vlc_object_release( p_input_thread );
1393 int libvlc_media_player_set_rate( libvlc_media_player_t *p_mi, float rate )
1395 var_SetFloat (p_mi, "rate", rate);
1397 input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1398 if( !p_input_thread )
1400 var_SetFloat( p_input_thread, "rate", rate );
1401 vlc_object_release( p_input_thread );
1405 float libvlc_media_player_get_rate( libvlc_media_player_t *p_mi )
1407 return var_GetFloat (p_mi, "rate");
1410 libvlc_state_t libvlc_media_player_get_state( libvlc_media_player_t *p_mi )
1413 libvlc_state_t state = p_mi->state;
1418 int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi )
1420 input_thread_t *p_input_thread;
1423 p_input_thread = libvlc_get_input_thread ( p_mi );
1424 if ( !p_input_thread )
1426 b_seekable = var_GetBool( p_input_thread, "can-seek" );
1427 vlc_object_release( p_input_thread );
1432 void libvlc_media_player_navigate( libvlc_media_player_t* p_mi,
1435 static const vlc_action_t map[] =
1437 INPUT_NAV_ACTIVATE, INPUT_NAV_UP, INPUT_NAV_DOWN,
1438 INPUT_NAV_LEFT, INPUT_NAV_RIGHT,
1441 if( navigate >= sizeof(map) / sizeof(map[0]) )
1444 input_thread_t *p_input = libvlc_get_input_thread ( p_mi );
1445 if ( p_input == NULL )
1448 input_Control( p_input, map[navigate], NULL );
1449 vlc_object_release( p_input );
1452 /* internal function, used by audio, video */
1453 libvlc_track_description_t *
1454 libvlc_get_track_description( libvlc_media_player_t *p_mi,
1455 const char *psz_variable )
1457 input_thread_t *p_input = libvlc_get_input_thread( p_mi );
1458 libvlc_track_description_t *p_track_description = NULL,
1459 *p_actual, *p_previous;
1464 vlc_value_t val_list, text_list;
1465 int i_ret = var_Change( p_input, psz_variable, VLC_VAR_GETCHOICES, &val_list, &text_list );
1466 if( i_ret != VLC_SUCCESS )
1470 if( val_list.p_list->i_count <= 0 )
1473 p_track_description = ( libvlc_track_description_t * )
1474 malloc( sizeof( libvlc_track_description_t ) );
1475 if ( !p_track_description )
1477 libvlc_printerr( "Not enough memory" );
1480 p_actual = p_track_description;
1482 for( int i = 0; i < val_list.p_list->i_count; i++ )
1486 p_actual = ( libvlc_track_description_t * )
1487 malloc( sizeof( libvlc_track_description_t ) );
1490 libvlc_track_description_list_release( p_track_description );
1491 libvlc_printerr( "Not enough memory" );
1495 p_actual->i_id = val_list.p_list->p_values[i].i_int;
1496 p_actual->psz_name = strdup( text_list.p_list->p_values[i].psz_string );
1497 p_actual->p_next = NULL;
1499 p_previous->p_next = p_actual;
1500 p_previous = p_actual;
1505 var_FreeList( &val_list, &text_list );
1506 vlc_object_release( p_input );
1508 return p_track_description;
1511 // Deprecated alias for libvlc_track_description_list_release
1512 void libvlc_track_description_release( libvlc_track_description_t *p_td )
1514 libvlc_track_description_list_release( p_td );
1517 void libvlc_track_description_list_release( libvlc_track_description_t *p_td )
1519 libvlc_track_description_t *p_actual, *p_before;
1524 free( p_actual->psz_name );
1525 p_before = p_actual;
1526 p_actual = p_before->p_next;
1531 int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi )
1533 input_thread_t *p_input_thread;
1536 p_input_thread = libvlc_get_input_thread ( p_mi );
1537 if ( !p_input_thread )
1539 b_can_pause = var_GetBool( p_input_thread, "can-pause" );
1540 vlc_object_release( p_input_thread );
1545 int libvlc_media_player_program_scrambled( libvlc_media_player_t *p_mi )
1547 input_thread_t *p_input_thread;
1548 bool b_program_scrambled;
1550 p_input_thread = libvlc_get_input_thread ( p_mi );
1551 if ( !p_input_thread )
1553 b_program_scrambled = var_GetBool( p_input_thread, "program-scrambled" );
1554 vlc_object_release( p_input_thread );
1556 return b_program_scrambled;
1559 void libvlc_media_player_next_frame( libvlc_media_player_t *p_mi )
1561 input_thread_t *p_input_thread = libvlc_get_input_thread ( p_mi );
1562 if( p_input_thread != NULL )
1564 var_TriggerCallback( p_input_thread, "frame-next" );
1565 vlc_object_release( p_input_thread );
1570 * Private lookup table to get subpicture alignment flag values corresponding
1571 * to a libvlc_position_t enumerated value.
1573 static const unsigned char position_subpicture_alignment[] = {
1574 [libvlc_position_center] = 0,
1575 [libvlc_position_left] = SUBPICTURE_ALIGN_LEFT,
1576 [libvlc_position_right] = SUBPICTURE_ALIGN_RIGHT,
1577 [libvlc_position_top] = SUBPICTURE_ALIGN_TOP,
1578 [libvlc_position_top_left] = SUBPICTURE_ALIGN_TOP | SUBPICTURE_ALIGN_LEFT,
1579 [libvlc_position_top_right] = SUBPICTURE_ALIGN_TOP | SUBPICTURE_ALIGN_RIGHT,
1580 [libvlc_position_bottom] = SUBPICTURE_ALIGN_BOTTOM,
1581 [libvlc_position_bottom_left] = SUBPICTURE_ALIGN_BOTTOM | SUBPICTURE_ALIGN_LEFT,
1582 [libvlc_position_bottom_right] = SUBPICTURE_ALIGN_BOTTOM | SUBPICTURE_ALIGN_RIGHT
1585 void libvlc_media_player_set_video_title_display( libvlc_media_player_t *p_mi, libvlc_position_t position, unsigned timeout )
1587 assert( position >= libvlc_position_disable && position <= libvlc_position_bottom_right );
1589 if ( position != libvlc_position_disable )
1591 var_SetBool( p_mi, "video-title-show", true );
1592 var_SetInteger( p_mi, "video-title-position", position_subpicture_alignment[position] );
1593 var_SetInteger( p_mi, "video-title-timeout", timeout );
1597 var_SetBool( p_mi, "video-title-show", false );
1602 * Maximum size of a formatted equalizer amplification band frequency value.
1604 * The allowed value range is supposed to be constrained from -20.0 to 20.0.
1606 * The format string " %.07f" with a minimum value of "-20" gives a maximum
1607 * string length of e.g. " -19.1234567", i.e. 12 bytes (not including the null
1610 #define EQZ_BAND_VALUE_SIZE 12
1612 int libvlc_media_player_set_equalizer( libvlc_media_player_t *p_mi, libvlc_equalizer_t *p_equalizer )
1614 char bands[EQZ_BANDS_MAX * EQZ_BAND_VALUE_SIZE + 1];
1616 if( p_equalizer != NULL )
1618 for( unsigned i = 0, c = 0; i < EQZ_BANDS_MAX; i++ )
1620 c += snprintf( bands + c, sizeof(bands) - c, " %.07f",
1621 p_equalizer->f_amp[i] );
1622 if( unlikely(c >= sizeof(bands)) )
1626 var_SetFloat( p_mi, "equalizer-preamp", p_equalizer->f_preamp );
1627 var_SetString( p_mi, "equalizer-bands", bands );
1629 var_SetString( p_mi, "audio-filter", p_equalizer ? "equalizer" : "" );
1631 audio_output_t *p_aout = input_resource_HoldAout( p_mi->input.p_resource );
1632 if( p_aout != NULL )
1634 if( p_equalizer != NULL )
1636 var_SetFloat( p_aout, "equalizer-preamp", p_equalizer->f_preamp );
1637 var_SetString( p_aout, "equalizer-bands", bands );
1640 var_SetString( p_aout, "audio-filter", p_equalizer ? "equalizer" : "" );
1641 vlc_object_release( p_aout );