1 /*****************************************************************************
2 * media.c: Libvlc API media descripor management
3 *****************************************************************************
4 * Copyright (C) 2007 VLC authors and VideoLAN
7 * Authors: Pierre d'Herbemont <pdherbemont@videolan.org>
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU Lesser General Public License as published by
11 * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public License
20 * along with this program; if not, write to the Free Software Foundation,
21 * 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_media_list.h> // For the subitems, here for convenience
33 #include <vlc/libvlc_events.h>
35 #include <vlc_common.h>
36 #include <vlc_input.h>
38 #include <vlc_playlist.h> /* For the preparser */
41 #include "../src/libvlc.h"
43 #include "libvlc_internal.h"
44 #include "media_internal.h"
46 static const vlc_meta_type_t libvlc_to_vlc_meta[] =
48 [libvlc_meta_Title] = vlc_meta_Title,
49 [libvlc_meta_Artist] = vlc_meta_Artist,
50 [libvlc_meta_Genre] = vlc_meta_Genre,
51 [libvlc_meta_Copyright] = vlc_meta_Copyright,
52 [libvlc_meta_Album] = vlc_meta_Album,
53 [libvlc_meta_TrackNumber] = vlc_meta_TrackNumber,
54 [libvlc_meta_Description] = vlc_meta_Description,
55 [libvlc_meta_Rating] = vlc_meta_Rating,
56 [libvlc_meta_Date] = vlc_meta_Date,
57 [libvlc_meta_Setting] = vlc_meta_Setting,
58 [libvlc_meta_URL] = vlc_meta_URL,
59 [libvlc_meta_Language] = vlc_meta_Language,
60 [libvlc_meta_NowPlaying] = vlc_meta_NowPlaying,
61 [libvlc_meta_Publisher] = vlc_meta_Publisher,
62 [libvlc_meta_EncodedBy] = vlc_meta_EncodedBy,
63 [libvlc_meta_ArtworkURL] = vlc_meta_ArtworkURL,
64 [libvlc_meta_TrackID] = vlc_meta_TrackID
67 static const libvlc_meta_t vlc_to_libvlc_meta[] =
69 [vlc_meta_Title] = libvlc_meta_Title,
70 [vlc_meta_Artist] = libvlc_meta_Artist,
71 [vlc_meta_Genre] = libvlc_meta_Genre,
72 [vlc_meta_Copyright] = libvlc_meta_Copyright,
73 [vlc_meta_Album] = libvlc_meta_Album,
74 [vlc_meta_TrackNumber] = libvlc_meta_TrackNumber,
75 [vlc_meta_Description] = libvlc_meta_Description,
76 [vlc_meta_Rating] = libvlc_meta_Rating,
77 [vlc_meta_Date] = libvlc_meta_Date,
78 [vlc_meta_Setting] = libvlc_meta_Setting,
79 [vlc_meta_URL] = libvlc_meta_URL,
80 [vlc_meta_Language] = libvlc_meta_Language,
81 [vlc_meta_NowPlaying] = libvlc_meta_NowPlaying,
82 [vlc_meta_Publisher] = libvlc_meta_Publisher,
83 [vlc_meta_EncodedBy] = libvlc_meta_EncodedBy,
84 [vlc_meta_ArtworkURL] = libvlc_meta_ArtworkURL,
85 [vlc_meta_TrackID] = libvlc_meta_TrackID
88 /**************************************************************************
89 * input_item_subitem_added (Private) (vlc event Callback)
90 **************************************************************************/
91 static void input_item_subitem_added( const vlc_event_t *p_event,
94 libvlc_media_t * p_md = user_data;
95 libvlc_media_t * p_md_child;
98 p_md_child = libvlc_media_new_from_input_item(
99 p_md->p_libvlc_instance,
100 p_event->u.input_item_subitem_added.p_new_child );
102 /* Add this to our media list */
103 if( !p_md->p_subitems )
105 p_md->p_subitems = libvlc_media_list_new( p_md->p_libvlc_instance );
106 libvlc_media_list_set_media( p_md->p_subitems, p_md );
108 if( p_md->p_subitems )
110 libvlc_media_list_add_media( p_md->p_subitems, p_md_child );
113 /* Construct the event */
114 event.type = libvlc_MediaSubItemAdded;
115 event.u.media_subitem_added.new_child = p_md_child;
118 libvlc_event_send( p_md->p_event_manager, &event );
119 libvlc_media_release( p_md_child );
122 /**************************************************************************
123 * input_item_subitemtree_added (Private) (vlc event Callback)
124 **************************************************************************/
125 static void input_item_subitemtree_added( const vlc_event_t * p_event,
128 VLC_UNUSED( p_event );
129 libvlc_media_t * p_md = user_data;
130 libvlc_event_t event;
132 /* Construct the event */
133 event.type = libvlc_MediaSubItemTreeAdded;
134 event.u.media_subitemtree_added.item = p_md;
137 libvlc_event_send( p_md->p_event_manager, &event );
140 /**************************************************************************
141 * input_item_meta_changed (Private) (vlc event Callback)
142 **************************************************************************/
143 static void input_item_meta_changed( const vlc_event_t *p_event,
146 libvlc_media_t * p_md = user_data;
147 libvlc_event_t event;
149 /* Construct the event */
150 event.type = libvlc_MediaMetaChanged;
151 event.u.media_meta_changed.meta_type =
152 vlc_to_libvlc_meta[p_event->u.input_item_meta_changed.meta_type];
155 libvlc_event_send( p_md->p_event_manager, &event );
158 /**************************************************************************
159 * input_item_duration_changed (Private) (vlc event Callback)
160 **************************************************************************/
161 static void input_item_duration_changed( const vlc_event_t *p_event,
164 libvlc_media_t * p_md = user_data;
165 libvlc_event_t event;
167 /* Construct the event */
168 event.type = libvlc_MediaDurationChanged;
169 event.u.media_duration_changed.new_duration =
170 from_mtime(p_event->u.input_item_duration_changed.new_duration);
173 libvlc_event_send( p_md->p_event_manager, &event );
176 /**************************************************************************
177 * input_item_preparsed_changed (Private) (vlc event Callback)
178 **************************************************************************/
179 static void input_item_preparsed_changed(const vlc_event_t *p_event,
182 libvlc_media_t *media = user_data;
183 libvlc_event_t event;
185 /* Eventually notify libvlc_media_parse() */
186 vlc_mutex_lock(&media->parsed_lock);
187 media->is_parsed = true;
188 vlc_cond_broadcast(&media->parsed_cond);
189 vlc_mutex_unlock(&media->parsed_lock);
192 /* Construct the event */
193 event.type = libvlc_MediaParsedChanged;
194 event.u.media_parsed_changed.new_status =
195 p_event->u.input_item_preparsed_changed.new_status;
198 libvlc_event_send(media->p_event_manager, &event);
201 /**************************************************************************
202 * Install event handler (Private)
203 **************************************************************************/
204 static void install_input_item_observer( libvlc_media_t *p_md )
206 vlc_event_attach( &p_md->p_input_item->event_manager,
207 vlc_InputItemSubItemAdded,
208 input_item_subitem_added,
210 vlc_event_attach( &p_md->p_input_item->event_manager,
211 vlc_InputItemMetaChanged,
212 input_item_meta_changed,
214 vlc_event_attach( &p_md->p_input_item->event_manager,
215 vlc_InputItemDurationChanged,
216 input_item_duration_changed,
218 vlc_event_attach( &p_md->p_input_item->event_manager,
219 vlc_InputItemPreparsedChanged,
220 input_item_preparsed_changed,
222 vlc_event_attach( &p_md->p_input_item->event_manager,
223 vlc_InputItemSubItemTreeAdded,
224 input_item_subitemtree_added,
228 /**************************************************************************
229 * Uninstall event handler (Private)
230 **************************************************************************/
231 static void uninstall_input_item_observer( libvlc_media_t *p_md )
233 vlc_event_detach( &p_md->p_input_item->event_manager,
234 vlc_InputItemSubItemAdded,
235 input_item_subitem_added,
237 vlc_event_detach( &p_md->p_input_item->event_manager,
238 vlc_InputItemMetaChanged,
239 input_item_meta_changed,
241 vlc_event_detach( &p_md->p_input_item->event_manager,
242 vlc_InputItemDurationChanged,
243 input_item_duration_changed,
245 vlc_event_detach( &p_md->p_input_item->event_manager,
246 vlc_InputItemPreparsedChanged,
247 input_item_preparsed_changed,
249 vlc_event_detach( &p_md->p_input_item->event_manager,
250 vlc_InputItemSubItemTreeAdded,
251 input_item_subitemtree_added,
255 /**************************************************************************
256 * Create a new media descriptor object from an input_item
258 * That's the generic constructor
259 **************************************************************************/
260 libvlc_media_t * libvlc_media_new_from_input_item(
261 libvlc_instance_t *p_instance,
262 input_item_t *p_input_item )
264 libvlc_media_t * p_md;
268 libvlc_printerr( "No input item given" );
272 p_md = calloc( 1, sizeof(libvlc_media_t) );
275 libvlc_printerr( "Not enough memory" );
279 p_md->p_libvlc_instance = p_instance;
280 p_md->p_input_item = p_input_item;
281 p_md->i_refcount = 1;
283 vlc_cond_init(&p_md->parsed_cond);
284 vlc_mutex_init(&p_md->parsed_lock);
286 p_md->state = libvlc_NothingSpecial;
288 /* A media descriptor can be a playlist. When you open a playlist
289 * It can give a bunch of item to read. */
290 p_md->p_subitems = NULL;
292 p_md->p_event_manager = libvlc_event_manager_new( p_md, p_instance );
293 if( unlikely(p_md->p_event_manager == NULL) )
299 libvlc_event_manager_t *em = p_md->p_event_manager;
300 libvlc_event_manager_register_event_type(em, libvlc_MediaMetaChanged);
301 libvlc_event_manager_register_event_type(em, libvlc_MediaSubItemAdded);
302 libvlc_event_manager_register_event_type(em, libvlc_MediaFreed);
303 libvlc_event_manager_register_event_type(em, libvlc_MediaDurationChanged);
304 libvlc_event_manager_register_event_type(em, libvlc_MediaStateChanged);
305 libvlc_event_manager_register_event_type(em, libvlc_MediaParsedChanged);
306 libvlc_event_manager_register_event_type(em, libvlc_MediaSubItemTreeAdded);
308 vlc_gc_incref( p_md->p_input_item );
310 install_input_item_observer( p_md );
315 /**************************************************************************
316 * Create a new media descriptor object
317 **************************************************************************/
318 libvlc_media_t *libvlc_media_new_location( libvlc_instance_t *p_instance,
319 const char * psz_mrl )
321 input_item_t * p_input_item;
322 libvlc_media_t * p_md;
324 p_input_item = input_item_New( psz_mrl, NULL );
328 libvlc_printerr( "Not enough memory" );
332 p_md = libvlc_media_new_from_input_item( p_instance, p_input_item );
334 /* The p_input_item is retained in libvlc_media_new_from_input_item */
335 vlc_gc_decref( p_input_item );
340 libvlc_media_t *libvlc_media_new_path( libvlc_instance_t *p_instance,
343 char *mrl = vlc_path2uri( path, NULL );
344 if( unlikely(mrl == NULL) )
346 libvlc_printerr( "Not enough memory" );
350 libvlc_media_t *m = libvlc_media_new_location( p_instance, mrl );
355 libvlc_media_t *libvlc_media_new_fd( libvlc_instance_t *p_instance, int fd )
358 snprintf( mrl, sizeof(mrl), "fd://%d", fd );
360 return libvlc_media_new_location( p_instance, mrl );
363 /**************************************************************************
364 * Create a new media descriptor object
365 **************************************************************************/
366 libvlc_media_t * libvlc_media_new_as_node( libvlc_instance_t *p_instance,
367 const char * psz_name )
369 input_item_t * p_input_item;
370 libvlc_media_t * p_md;
372 p_input_item = input_item_New( "vlc://nop", psz_name );
376 libvlc_printerr( "Not enough memory" );
380 p_md = libvlc_media_new_from_input_item( p_instance, p_input_item );
382 p_md->p_subitems = libvlc_media_list_new( p_md->p_libvlc_instance );
387 /**************************************************************************
388 * Add an option to the media descriptor,
389 * that will be used to determine how the media_player will read the
390 * media. This allow to use VLC advanced reading/streaming
391 * options in a per-media basis
393 * The options are detailled in vlc --long-help, for instance "--sout-all"
394 **************************************************************************/
395 void libvlc_media_add_option( libvlc_media_t * p_md,
396 const char * psz_option )
398 libvlc_media_add_option_flag( p_md, psz_option,
399 VLC_INPUT_OPTION_UNIQUE|VLC_INPUT_OPTION_TRUSTED );
402 /**************************************************************************
403 * Same as libvlc_media_add_option but with configurable flags.
404 **************************************************************************/
405 void libvlc_media_add_option_flag( libvlc_media_t * p_md,
406 const char * ppsz_option,
409 input_item_AddOption( p_md->p_input_item, ppsz_option, i_flags );
412 /**************************************************************************
413 * Delete a media descriptor object
414 **************************************************************************/
415 void libvlc_media_release( libvlc_media_t *p_md )
422 if( p_md->i_refcount > 0 )
425 if( p_md->p_subitems )
426 libvlc_media_list_release( p_md->p_subitems );
428 uninstall_input_item_observer( p_md );
429 vlc_gc_decref( p_md->p_input_item );
431 vlc_cond_destroy( &p_md->parsed_cond );
432 vlc_mutex_destroy( &p_md->parsed_lock );
434 /* Construct the event */
435 libvlc_event_t event;
436 event.type = libvlc_MediaFreed;
437 event.u.media_freed.md = p_md;
440 libvlc_event_send( p_md->p_event_manager, &event );
442 libvlc_event_manager_release( p_md->p_event_manager );
447 /**************************************************************************
448 * Retain a media descriptor object
449 **************************************************************************/
450 void libvlc_media_retain( libvlc_media_t *p_md )
456 /**************************************************************************
457 * Duplicate a media descriptor object
458 **************************************************************************/
460 libvlc_media_duplicate( libvlc_media_t *p_md_orig )
462 return libvlc_media_new_from_input_item(
463 p_md_orig->p_libvlc_instance, p_md_orig->p_input_item );
466 /**************************************************************************
467 * Get mrl from a media descriptor object
468 **************************************************************************/
470 libvlc_media_get_mrl( libvlc_media_t * p_md )
473 return input_item_GetURI( p_md->p_input_item );
476 /**************************************************************************
477 * Getter for meta information
478 **************************************************************************/
480 char *libvlc_media_get_meta( libvlc_media_t *p_md, libvlc_meta_t e_meta )
482 char *psz_meta = input_item_GetMeta( p_md->p_input_item,
483 libvlc_to_vlc_meta[e_meta] );
484 /* Should be integrated in core */
485 if( psz_meta == NULL && e_meta == libvlc_meta_Title
486 && p_md->p_input_item->psz_name != NULL )
487 psz_meta = strdup( p_md->p_input_item->psz_name );
492 /**************************************************************************
493 * Setter for meta information
494 **************************************************************************/
496 void libvlc_media_set_meta( libvlc_media_t *p_md, libvlc_meta_t e_meta, const char *psz_value )
499 input_item_SetMeta( p_md->p_input_item, libvlc_to_vlc_meta[e_meta], psz_value );
502 int libvlc_media_save_meta( libvlc_media_t *p_md )
505 vlc_object_t *p_obj = VLC_OBJECT(p_md->p_libvlc_instance->p_libvlc_int);
506 return input_item_WriteMeta( p_obj, p_md->p_input_item ) == VLC_SUCCESS;
509 /**************************************************************************
510 * Getter for state information
511 * Can be error, playing, buffering, NothingSpecial.
512 **************************************************************************/
515 libvlc_media_get_state( libvlc_media_t *p_md )
521 /**************************************************************************
522 * Setter for state information (LibVLC Internal)
523 **************************************************************************/
526 libvlc_media_set_state( libvlc_media_t *p_md,
527 libvlc_state_t state )
529 libvlc_event_t event;
533 /* Construct the event */
534 event.type = libvlc_MediaStateChanged;
535 event.u.media_state_changed.new_state = state;
538 libvlc_event_send( p_md->p_event_manager, &event );
541 /**************************************************************************
543 **************************************************************************/
544 libvlc_media_list_t *
545 libvlc_media_subitems( libvlc_media_t * p_md )
547 if( p_md->p_subitems )
548 libvlc_media_list_retain( p_md->p_subitems );
549 return p_md->p_subitems;
552 /**************************************************************************
553 * Getter for statistics information
554 **************************************************************************/
555 int libvlc_media_get_stats( libvlc_media_t *p_md,
556 libvlc_media_stats_t *p_stats )
558 if( !p_md->p_input_item )
561 input_stats_t *p_itm_stats = p_md->p_input_item->p_stats;
562 vlc_mutex_lock( &p_itm_stats->lock );
563 p_stats->i_read_bytes = p_itm_stats->i_read_bytes;
564 p_stats->f_input_bitrate = p_itm_stats->f_input_bitrate;
566 p_stats->i_demux_read_bytes = p_itm_stats->i_demux_read_bytes;
567 p_stats->f_demux_bitrate = p_itm_stats->f_demux_bitrate;
568 p_stats->i_demux_corrupted = p_itm_stats->i_demux_corrupted;
569 p_stats->i_demux_discontinuity = p_itm_stats->i_demux_discontinuity;
571 p_stats->i_decoded_video = p_itm_stats->i_decoded_video;
572 p_stats->i_decoded_audio = p_itm_stats->i_decoded_audio;
574 p_stats->i_displayed_pictures = p_itm_stats->i_displayed_pictures;
575 p_stats->i_lost_pictures = p_itm_stats->i_lost_pictures;
577 p_stats->i_played_abuffers = p_itm_stats->i_played_abuffers;
578 p_stats->i_lost_abuffers = p_itm_stats->i_lost_abuffers;
580 p_stats->i_sent_packets = p_itm_stats->i_sent_packets;
581 p_stats->i_sent_bytes = p_itm_stats->i_sent_bytes;
582 p_stats->f_send_bitrate = p_itm_stats->f_send_bitrate;
583 vlc_mutex_unlock( &p_itm_stats->lock );
587 /**************************************************************************
589 **************************************************************************/
590 libvlc_event_manager_t *
591 libvlc_media_event_manager( libvlc_media_t * p_md )
595 return p_md->p_event_manager;
598 /**************************************************************************
599 * Get duration of media object (in ms)
600 **************************************************************************/
602 libvlc_media_get_duration( libvlc_media_t * p_md )
606 if( !p_md->p_input_item )
608 libvlc_printerr( "No input item" );
612 if (!input_item_IsPreparsed( p_md->p_input_item ))
615 return from_mtime(input_item_GetDuration( p_md->p_input_item ));
618 static int media_parse(libvlc_media_t *media)
620 libvlc_int_t *libvlc = media->p_libvlc_instance->p_libvlc_int;
621 input_item_t *item = media->p_input_item;
623 /* TODO: Fetch art on need basis. But how not to break compatibility? */
624 libvlc_ArtRequest(libvlc, item);
625 return libvlc_MetaRequest(libvlc, item);
628 /**************************************************************************
629 * Parse the media and wait.
630 **************************************************************************/
632 libvlc_media_parse(libvlc_media_t *media)
634 vlc_mutex_lock(&media->parsed_lock);
635 if (!media->has_asked_preparse)
637 media->has_asked_preparse = true;
638 vlc_mutex_unlock(&media->parsed_lock);
640 if (media_parse(media))
641 /* Parse failed: do not wait! */
643 vlc_mutex_lock(&media->parsed_lock);
646 while (!media->is_parsed)
647 vlc_cond_wait(&media->parsed_cond, &media->parsed_lock);
648 vlc_mutex_unlock(&media->parsed_lock);
651 /**************************************************************************
652 * Parse the media but do not wait.
653 **************************************************************************/
655 libvlc_media_parse_async(libvlc_media_t *media)
659 vlc_mutex_lock(&media->parsed_lock);
660 needed = !media->has_asked_preparse;
661 media->has_asked_preparse = true;
662 vlc_mutex_unlock(&media->parsed_lock);
668 /**************************************************************************
669 * Get parsed status for media object.
670 **************************************************************************/
672 libvlc_media_is_parsed(libvlc_media_t *media)
676 vlc_mutex_lock(&media->parsed_lock);
677 parsed = media->is_parsed;
678 vlc_mutex_unlock(&media->parsed_lock);
682 /**************************************************************************
683 * Sets media descriptor's user_data. user_data is specialized data
684 * accessed by the host application, VLC.framework uses it as a pointer to
685 * an native object that references a libvlc_media_t pointer
686 **************************************************************************/
688 libvlc_media_set_user_data( libvlc_media_t * p_md, void * p_new_user_data )
691 p_md->p_user_data = p_new_user_data;
694 /**************************************************************************
695 * Get media descriptor's user_data. user_data is specialized data
696 * accessed by the host application, VLC.framework uses it as a pointer to
697 * an native object that references a libvlc_media_t pointer
698 **************************************************************************/
700 libvlc_media_get_user_data( libvlc_media_t * p_md )
703 return p_md->p_user_data;
706 /**************************************************************************
707 * Get media descriptor's elementary streams description
708 **************************************************************************/
710 libvlc_media_get_tracks_info( libvlc_media_t *p_md, libvlc_media_track_info_t ** pp_es )
714 input_item_t *p_input_item = p_md->p_input_item;
715 vlc_mutex_lock( &p_input_item->lock );
717 const int i_es = p_input_item->i_es;
718 *pp_es = (i_es > 0) ? malloc( i_es * sizeof(libvlc_media_track_info_t) ) : NULL;
720 if( !*pp_es ) /* no ES, or OOM */
722 vlc_mutex_unlock( &p_input_item->lock );
727 for( int i = 0; i < i_es; i++ )
729 libvlc_media_track_info_t *p_mes = *pp_es+i;
730 const es_format_t *p_es = p_input_item->es[i];
732 p_mes->i_codec = p_es->i_codec;
733 p_mes->i_id = p_es->i_id;
735 p_mes->i_profile = p_es->i_profile;
736 p_mes->i_level = p_es->i_level;
742 p_mes->i_type = libvlc_track_unknown;
745 p_mes->i_type = libvlc_track_video;
746 p_mes->u.video.i_height = p_es->video.i_height;
747 p_mes->u.video.i_width = p_es->video.i_width;
750 p_mes->i_type = libvlc_track_audio;
751 p_mes->u.audio.i_channels = p_es->audio.i_channels;
752 p_mes->u.audio.i_rate = p_es->audio.i_rate;
755 p_mes->i_type = libvlc_track_text;
760 vlc_mutex_unlock( &p_input_item->lock );
765 libvlc_media_tracks_get( libvlc_media_t *p_md, libvlc_media_track_t *** pp_es )
769 input_item_t *p_input_item = p_md->p_input_item;
770 vlc_mutex_lock( &p_input_item->lock );
772 const int i_es = p_input_item->i_es;
773 *pp_es = (i_es > 0) ? calloc( i_es, sizeof(**pp_es) ) : NULL;
775 if( !*pp_es ) /* no ES, or OOM */
777 vlc_mutex_unlock( &p_input_item->lock );
782 for( int i = 0; i < i_es; i++ )
784 libvlc_media_track_t *p_mes = calloc( 1, sizeof(*p_mes) );
787 p_mes->audio = malloc( __MAX(__MAX(sizeof(*p_mes->audio),
788 sizeof(*p_mes->video)),
789 sizeof(*p_mes->subtitle)) );
791 if ( !p_mes || !p_mes->audio )
793 libvlc_media_tracks_release( *pp_es, i_es );
796 vlc_mutex_unlock( &p_input_item->lock );
801 const es_format_t *p_es = p_input_item->es[i];
803 p_mes->i_codec = p_es->i_codec;
804 p_mes->i_original_fourcc = p_es->i_original_fourcc;
805 p_mes->i_id = p_es->i_id;
807 p_mes->i_profile = p_es->i_profile;
808 p_mes->i_level = p_es->i_level;
810 p_mes->i_bitrate = p_es->i_bitrate;
811 p_mes->psz_language = p_es->psz_language != NULL ? strdup(p_es->psz_language) : NULL;
812 p_mes->psz_description = p_es->psz_description != NULL ? strdup(p_es->psz_description) : NULL;
818 p_mes->i_type = libvlc_track_unknown;
821 p_mes->i_type = libvlc_track_video;
822 p_mes->video->i_height = p_es->video.i_height;
823 p_mes->video->i_width = p_es->video.i_width;
824 p_mes->video->i_sar_num = p_es->video.i_sar_num;
825 p_mes->video->i_sar_den = p_es->video.i_sar_den;
826 p_mes->video->i_frame_rate_num = p_es->video.i_frame_rate;
827 p_mes->video->i_frame_rate_den = p_es->video.i_frame_rate_base;
830 p_mes->i_type = libvlc_track_audio;
831 p_mes->audio->i_channels = p_es->audio.i_channels;
832 p_mes->audio->i_rate = p_es->audio.i_rate;
835 p_mes->i_type = libvlc_track_text;
836 p_mes->subtitle->psz_encoding = p_es->subs.psz_encoding != NULL ?
837 strdup(p_es->subs.psz_encoding) : NULL;
842 vlc_mutex_unlock( &p_input_item->lock );
847 /**************************************************************************
848 * Release media descriptor's elementary streams description array
849 **************************************************************************/
850 void libvlc_media_tracks_release( libvlc_media_track_t **p_tracks, unsigned i_count )
852 for( unsigned i = 0; i < i_count; ++i )
856 free( p_tracks[i]->psz_language );
857 free( p_tracks[i]->psz_description );
858 switch( p_tracks[i]->i_type )
860 case libvlc_track_audio:
862 case libvlc_track_video:
864 case libvlc_track_text:
865 free( p_tracks[i]->subtitle->psz_encoding );
867 case libvlc_track_unknown:
871 free( p_tracks[i]->audio );