1 /*****************************************************************************
2 * media.c: Libvlc API media descripor management
3 *****************************************************************************
4 * Copyright (C) 2007 the VideoLAN team
7 * Authors: Pierre d'Herbemont <pdherbemont@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 *****************************************************************************/
28 #include <vlc/libvlc.h>
29 #include <vlc/libvlc_media.h>
30 #include <vlc/libvlc_media_list.h> // For the subitems, here for convenience
31 #include <vlc/libvlc_events.h>
33 #include <vlc_common.h>
34 #include <vlc_input.h>
36 #include <vlc_playlist.h> /* For the preparser */
40 #include "libvlc_internal.h"
41 #include "media_internal.h"
43 static const vlc_meta_type_t libvlc_to_vlc_meta[] =
45 [libvlc_meta_Title] = vlc_meta_Title,
46 [libvlc_meta_Artist] = vlc_meta_Artist,
47 [libvlc_meta_Genre] = vlc_meta_Genre,
48 [libvlc_meta_Copyright] = vlc_meta_Copyright,
49 [libvlc_meta_Album] = vlc_meta_Album,
50 [libvlc_meta_TrackNumber] = vlc_meta_TrackNumber,
51 [libvlc_meta_Description] = vlc_meta_Description,
52 [libvlc_meta_Rating] = vlc_meta_Rating,
53 [libvlc_meta_Date] = vlc_meta_Date,
54 [libvlc_meta_Setting] = vlc_meta_Setting,
55 [libvlc_meta_URL] = vlc_meta_URL,
56 [libvlc_meta_Language] = vlc_meta_Language,
57 [libvlc_meta_NowPlaying] = vlc_meta_NowPlaying,
58 [libvlc_meta_Publisher] = vlc_meta_Publisher,
59 [libvlc_meta_EncodedBy] = vlc_meta_EncodedBy,
60 [libvlc_meta_ArtworkURL] = vlc_meta_ArtworkURL,
61 [libvlc_meta_TrackID] = vlc_meta_TrackID
64 static const libvlc_meta_t vlc_to_libvlc_meta[] =
66 [vlc_meta_Title] = libvlc_meta_Title,
67 [vlc_meta_Artist] = libvlc_meta_Artist,
68 [vlc_meta_Genre] = libvlc_meta_Genre,
69 [vlc_meta_Copyright] = libvlc_meta_Copyright,
70 [vlc_meta_Album] = libvlc_meta_Album,
71 [vlc_meta_TrackNumber] = libvlc_meta_TrackNumber,
72 [vlc_meta_Description] = libvlc_meta_Description,
73 [vlc_meta_Rating] = libvlc_meta_Rating,
74 [vlc_meta_Date] = libvlc_meta_Date,
75 [vlc_meta_Setting] = libvlc_meta_Setting,
76 [vlc_meta_URL] = libvlc_meta_URL,
77 [vlc_meta_Language] = libvlc_meta_Language,
78 [vlc_meta_NowPlaying] = libvlc_meta_NowPlaying,
79 [vlc_meta_Publisher] = libvlc_meta_Publisher,
80 [vlc_meta_EncodedBy] = libvlc_meta_EncodedBy,
81 [vlc_meta_ArtworkURL] = libvlc_meta_ArtworkURL,
82 [vlc_meta_TrackID] = libvlc_meta_TrackID
85 /**************************************************************************
86 * input_item_subitem_added (Private) (vlc event Callback)
87 **************************************************************************/
88 static void input_item_subitem_added( const vlc_event_t *p_event,
91 libvlc_media_t * p_md = user_data;
92 libvlc_media_t * p_md_child;
95 p_md_child = libvlc_media_new_from_input_item(
96 p_md->p_libvlc_instance,
97 p_event->u.input_item_subitem_added.p_new_child, NULL );
99 /* Add this to our media list */
100 if( !p_md->p_subitems )
102 p_md->p_subitems = libvlc_media_list_new( p_md->p_libvlc_instance, NULL );
103 libvlc_media_list_set_media( p_md->p_subitems, p_md, NULL );
105 if( p_md->p_subitems )
107 libvlc_media_list_add_media( p_md->p_subitems, p_md_child, NULL );
110 /* Construct the event */
111 event.type = libvlc_MediaSubItemAdded;
112 event.u.media_subitem_added.new_child = p_md_child;
115 libvlc_event_send( p_md->p_event_manager, &event );
116 libvlc_media_release( p_md_child );
119 /**************************************************************************
120 * input_item_meta_changed (Private) (vlc event Callback)
121 **************************************************************************/
122 static void input_item_meta_changed( const vlc_event_t *p_event,
125 libvlc_media_t * p_md = user_data;
126 libvlc_event_t event;
128 /* Construct the event */
129 event.type = libvlc_MediaMetaChanged;
130 event.u.media_meta_changed.meta_type =
131 vlc_to_libvlc_meta[p_event->u.input_item_meta_changed.meta_type];
134 libvlc_event_send( p_md->p_event_manager, &event );
137 /**************************************************************************
138 * input_item_duration_changed (Private) (vlc event Callback)
139 **************************************************************************/
140 static void input_item_duration_changed( const vlc_event_t *p_event,
143 libvlc_media_t * p_md = user_data;
144 libvlc_event_t event;
146 /* Construct the event */
147 event.type = libvlc_MediaDurationChanged;
148 event.u.media_duration_changed.new_duration =
149 p_event->u.input_item_duration_changed.new_duration;
152 libvlc_event_send( p_md->p_event_manager, &event );
155 /**************************************************************************
156 * input_item_preparsed_changed (Private) (vlc event Callback)
157 **************************************************************************/
158 static void input_item_preparsed_changed( const vlc_event_t *p_event,
161 libvlc_media_t * p_md = user_data;
162 libvlc_event_t event;
164 /* Construct the event */
165 event.type = libvlc_MediaPreparsedChanged;
166 event.u.media_preparsed_changed.new_status =
167 p_event->u.input_item_preparsed_changed.new_status;
170 libvlc_event_send( p_md->p_event_manager, &event );
173 /**************************************************************************
174 * Install event handler (Private)
175 **************************************************************************/
176 static void install_input_item_observer( libvlc_media_t *p_md )
178 vlc_event_attach( &p_md->p_input_item->event_manager,
179 vlc_InputItemSubItemAdded,
180 input_item_subitem_added,
182 vlc_event_attach( &p_md->p_input_item->event_manager,
183 vlc_InputItemMetaChanged,
184 input_item_meta_changed,
186 vlc_event_attach( &p_md->p_input_item->event_manager,
187 vlc_InputItemDurationChanged,
188 input_item_duration_changed,
190 vlc_event_attach( &p_md->p_input_item->event_manager,
191 vlc_InputItemPreparsedChanged,
192 input_item_preparsed_changed,
196 /**************************************************************************
197 * Uninstall event handler (Private)
198 **************************************************************************/
199 static void uninstall_input_item_observer( libvlc_media_t *p_md )
201 vlc_event_detach( &p_md->p_input_item->event_manager,
202 vlc_InputItemSubItemAdded,
203 input_item_subitem_added,
205 vlc_event_detach( &p_md->p_input_item->event_manager,
206 vlc_InputItemMetaChanged,
207 input_item_meta_changed,
209 vlc_event_detach( &p_md->p_input_item->event_manager,
210 vlc_InputItemDurationChanged,
211 input_item_duration_changed,
213 vlc_event_detach( &p_md->p_input_item->event_manager,
214 vlc_InputItemPreparsedChanged,
215 input_item_preparsed_changed,
219 /**************************************************************************
220 * Preparse if not already done (Private)
221 **************************************************************************/
222 static void preparse_if_needed( libvlc_media_t *p_md )
224 /* XXX: need some locking here */
225 if (!p_md->b_preparsed)
227 playlist_PreparseEnqueue(
228 libvlc_priv (p_md->p_libvlc_instance->p_libvlc_int)->p_playlist,
229 p_md->p_input_item, pl_Unlocked );
230 p_md->b_preparsed = true;
234 /**************************************************************************
235 * Create a new media descriptor object from an input_item
237 * That's the generic constructor
238 **************************************************************************/
239 libvlc_media_t * libvlc_media_new_from_input_item(
240 libvlc_instance_t *p_instance,
241 input_item_t *p_input_item,
242 libvlc_exception_t *p_e )
244 libvlc_media_t * p_md;
248 libvlc_exception_raise( p_e );
249 libvlc_printerr( "No input item given" );
253 p_md = malloc( sizeof(libvlc_media_t) );
256 libvlc_exception_raise( p_e );
257 libvlc_printerr( "Not enough memory" );
261 p_md->p_libvlc_instance = p_instance;
262 p_md->p_input_item = p_input_item;
263 p_md->b_preparsed = false;
264 p_md->i_refcount = 1;
265 p_md->p_user_data = NULL;
267 p_md->state = libvlc_NothingSpecial;
269 /* A media descriptor can be a playlist. When you open a playlist
270 * It can give a bunch of item to read. */
271 p_md->p_subitems = NULL;
273 p_md->p_event_manager = libvlc_event_manager_new( p_md, p_instance, p_e );
274 libvlc_event_manager_register_event_type( p_md->p_event_manager,
275 libvlc_MediaMetaChanged, p_e );
276 libvlc_event_manager_register_event_type( p_md->p_event_manager,
277 libvlc_MediaSubItemAdded, p_e );
278 libvlc_event_manager_register_event_type( p_md->p_event_manager,
279 libvlc_MediaFreed, p_e );
280 libvlc_event_manager_register_event_type( p_md->p_event_manager,
281 libvlc_MediaDurationChanged, p_e );
282 libvlc_event_manager_register_event_type( p_md->p_event_manager,
283 libvlc_MediaStateChanged, p_e );
285 vlc_gc_incref( p_md->p_input_item );
287 install_input_item_observer( p_md );
292 /**************************************************************************
293 * Create a new media descriptor object
294 **************************************************************************/
295 libvlc_media_t * libvlc_media_new(
296 libvlc_instance_t *p_instance,
297 const char * psz_mrl,
298 libvlc_exception_t *p_e )
300 input_item_t * p_input_item;
301 libvlc_media_t * p_md;
303 p_input_item = input_item_New( p_instance->p_libvlc_int, psz_mrl, NULL );
307 libvlc_exception_raise( p_e );
308 libvlc_printerr( "Not enough memory" );
312 p_md = libvlc_media_new_from_input_item( p_instance,
315 /* The p_input_item is retained in libvlc_media_new_from_input_item */
316 vlc_gc_decref( p_input_item );
321 /**************************************************************************
322 * Create a new media descriptor object
323 **************************************************************************/
324 libvlc_media_t * libvlc_media_new_as_node(
325 libvlc_instance_t *p_instance,
326 const char * psz_name,
327 libvlc_exception_t *p_e )
329 input_item_t * p_input_item;
330 libvlc_media_t * p_md;
332 p_input_item = input_item_New( p_instance->p_libvlc_int, "vlc://nop", psz_name );
336 libvlc_exception_raise( p_e );
337 libvlc_printerr( "Not enough memory" );
341 p_md = libvlc_media_new_from_input_item( p_instance,
344 p_md->p_subitems = libvlc_media_list_new( p_md->p_libvlc_instance, NULL );
349 /**************************************************************************
350 * Add an option to the media descriptor,
351 * that will be used to determine how the media_player will read the
352 * media. This allow to use VLC advanced reading/streaming
353 * options in a per-media basis
355 * The options are detailled in vlc --long-help, for instance "--sout-all"
356 **************************************************************************/
357 void libvlc_media_add_option(
358 libvlc_media_t * p_md,
359 const char * psz_option,
360 libvlc_exception_t *p_e )
363 input_item_AddOption( p_md->p_input_item, psz_option,
364 VLC_INPUT_OPTION_UNIQUE|VLC_INPUT_OPTION_TRUSTED );
367 /**************************************************************************
368 * Same as libvlc_media_add_option but with configurable flags.
369 **************************************************************************/
370 void libvlc_media_add_option_flag(
371 libvlc_media_t * p_md,
372 const char * ppsz_option,
373 libvlc_media_option_t i_flags,
374 libvlc_exception_t *p_e )
377 input_item_AddOption( p_md->p_input_item, ppsz_option,
381 /**************************************************************************
382 * Delete a media descriptor object
383 **************************************************************************/
384 void libvlc_media_release( libvlc_media_t *p_md )
391 if( p_md->i_refcount > 0 )
394 if( p_md->p_subitems )
395 libvlc_media_list_release( p_md->p_subitems );
397 uninstall_input_item_observer( p_md );
398 vlc_gc_decref( p_md->p_input_item );
400 /* Construct the event */
401 libvlc_event_t event;
402 event.type = libvlc_MediaFreed;
403 event.u.media_freed.md = p_md;
406 libvlc_event_send( p_md->p_event_manager, &event );
408 libvlc_event_manager_release( p_md->p_event_manager );
413 /**************************************************************************
414 * Retain a media descriptor object
415 **************************************************************************/
416 void libvlc_media_retain( libvlc_media_t *p_md )
424 /**************************************************************************
425 * Duplicate a media descriptor object
426 **************************************************************************/
428 libvlc_media_duplicate( libvlc_media_t *p_md_orig )
430 return libvlc_media_new_from_input_item(
431 p_md_orig->p_libvlc_instance, p_md_orig->p_input_item, NULL );
434 /**************************************************************************
435 * Get mrl from a media descriptor object
436 **************************************************************************/
438 libvlc_media_get_mrl( libvlc_media_t * p_md,
439 libvlc_exception_t * p_e )
442 return input_item_GetURI( p_md->p_input_item );
445 /**************************************************************************
446 * Getter for meta information
447 **************************************************************************/
449 char * libvlc_media_get_meta( libvlc_media_t *p_md,
450 libvlc_meta_t e_meta,
451 libvlc_exception_t *p_e )
458 preparse_if_needed( p_md );
460 psz_meta = input_item_GetMeta( p_md->p_input_item,
461 libvlc_to_vlc_meta[e_meta] );
463 if( e_meta == libvlc_meta_ArtworkURL && !psz_meta )
465 playlist_AskForArtEnqueue(
466 libvlc_priv(p_md->p_libvlc_instance->p_libvlc_int)->p_playlist,
467 p_md->p_input_item, pl_Unlocked );
470 /* Should be integrated in core */
471 if( !psz_meta && e_meta == libvlc_meta_Title && p_md->p_input_item->psz_name )
474 return strdup( p_md->p_input_item->psz_name );
480 /**************************************************************************
481 * Getter for state information
482 * Can be error, playing, buffering, NothingSpecial.
483 **************************************************************************/
486 libvlc_media_get_state( libvlc_media_t *p_md,
487 libvlc_exception_t *p_e )
493 /**************************************************************************
494 * Setter for state information (LibVLC Internal)
495 **************************************************************************/
498 libvlc_media_set_state( libvlc_media_t *p_md,
499 libvlc_state_t state,
500 libvlc_exception_t *p_e )
502 libvlc_event_t event;
507 /* Construct the event */
508 event.type = libvlc_MediaStateChanged;
509 event.u.media_state_changed.new_state = state;
512 libvlc_event_send( p_md->p_event_manager, &event );
515 /**************************************************************************
517 **************************************************************************/
518 libvlc_media_list_t *
519 libvlc_media_subitems( libvlc_media_t * p_md,
520 libvlc_exception_t * p_e )
524 if( p_md->p_subitems )
525 libvlc_media_list_retain( p_md->p_subitems );
526 return p_md->p_subitems;
529 /**************************************************************************
531 **************************************************************************/
532 libvlc_event_manager_t *
533 libvlc_media_event_manager( libvlc_media_t * p_md,
534 libvlc_exception_t * p_e )
538 return p_md->p_event_manager;
541 /**************************************************************************
542 * Get duration of media object (in ms)
543 **************************************************************************/
545 libvlc_media_get_duration( libvlc_media_t * p_md,
546 libvlc_exception_t * p_e )
550 if( !p_md || !p_md->p_input_item)
552 libvlc_exception_raise( p_e );
553 libvlc_printerr( "No input item" );
557 return input_item_GetDuration( p_md->p_input_item ) / 1000;
560 /**************************************************************************
561 * Get preparsed status for media object.
562 **************************************************************************/
564 libvlc_media_is_preparsed( libvlc_media_t * p_md,
565 libvlc_exception_t * p_e )
569 if( !p_md || !p_md->p_input_item)
571 libvlc_exception_raise( p_e );
572 libvlc_printerr( "No input item" );
576 return input_item_IsPreparsed( p_md->p_input_item );
579 /**************************************************************************
580 * Sets media descriptor's user_data. user_data is specialized data
581 * accessed by the host application, VLC.framework uses it as a pointer to
582 * an native object that references a libvlc_media_t pointer
583 **************************************************************************/
585 libvlc_media_set_user_data( libvlc_media_t * p_md,
586 void * p_new_user_data,
587 libvlc_exception_t * p_e )
593 p_md->p_user_data = p_new_user_data;
597 /**************************************************************************
598 * Get media descriptor's user_data. user_data is specialized data
599 * accessed by the host application, VLC.framework uses it as a pointer to
600 * an native object that references a libvlc_media_t pointer
601 **************************************************************************/
603 libvlc_media_get_user_data( libvlc_media_t * p_md,
604 libvlc_exception_t * p_e )
607 return p_md ? p_md->p_user_data : NULL;