lib/media.c

   1 /*****************************************************************************
   2  * media.c: Libvlc API media descripor management
   3  *****************************************************************************
   4  * Copyright (C) 2007 VLC authors and VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Pierre d'Herbemont <pdherbemont@videolan.org>
   8  *
   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.
  13  *
  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.
  18  *
  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  *****************************************************************************/
  23
  24 #ifdef HAVE_CONFIG_H
  25 # include "config.h"
  26 #endif
  27
  28 #include <assert.h>
  29 #include <errno.h>
  30
  31 #include <vlc/libvlc.h>
  32 #include <vlc/libvlc_media.h>
  33 #include <vlc/libvlc_media_list.h> // For the subitems, here for convenience
  34 #include <vlc/libvlc_events.h>
  35
  36 #include <vlc_common.h>
  37 #include <vlc_input.h>
  38 #include <vlc_meta.h>
  39 #include <vlc_playlist.h> /* For the preparser */
  40 #include <vlc_url.h>
  41
  42 #include "../src/libvlc.h"
  43
  44 #include "libvlc_internal.h"
  45 #include "media_internal.h"
  46 #include "media_list_internal.h"
  47
  48 static const vlc_meta_type_t libvlc_to_vlc_meta[] =
  49 {
  50     [libvlc_meta_Title]        = vlc_meta_Title,
  51     [libvlc_meta_Artist]       = vlc_meta_Artist,
  52     [libvlc_meta_Genre]        = vlc_meta_Genre,
  53     [libvlc_meta_Copyright]    = vlc_meta_Copyright,
  54     [libvlc_meta_Album]        = vlc_meta_Album,
  55     [libvlc_meta_TrackNumber]  = vlc_meta_TrackNumber,
  56     [libvlc_meta_Description]  = vlc_meta_Description,
  57     [libvlc_meta_Rating]       = vlc_meta_Rating,
  58     [libvlc_meta_Date]         = vlc_meta_Date,
  59     [libvlc_meta_Setting]      = vlc_meta_Setting,
  60     [libvlc_meta_URL]          = vlc_meta_URL,
  61     [libvlc_meta_Language]     = vlc_meta_Language,
  62     [libvlc_meta_NowPlaying]   = vlc_meta_NowPlaying,
  63     [libvlc_meta_Publisher]    = vlc_meta_Publisher,
  64     [libvlc_meta_EncodedBy]    = vlc_meta_EncodedBy,
  65     [libvlc_meta_ArtworkURL]   = vlc_meta_ArtworkURL,
  66     [libvlc_meta_TrackID]      = vlc_meta_TrackID,
  67     [libvlc_meta_TrackTotal]   = vlc_meta_TrackTotal,
  68     [libvlc_meta_Director]     = vlc_meta_Director,
  69     [libvlc_meta_Season]       = vlc_meta_Season,
  70     [libvlc_meta_Episode]      = vlc_meta_Episode,
  71     [libvlc_meta_ShowName]     = vlc_meta_ShowName,
  72     [libvlc_meta_Actors]       = vlc_meta_Actors,
  73     [libvlc_meta_AlbumArtist]  = vlc_meta_AlbumArtist,
  74     [libvlc_meta_DiscNumber]   = vlc_meta_DiscNumber
  75 };
  76
  77 static const libvlc_meta_t vlc_to_libvlc_meta[] =
  78 {
  79     [vlc_meta_Title]        = libvlc_meta_Title,
  80     [vlc_meta_Artist]       = libvlc_meta_Artist,
  81     [vlc_meta_Genre]        = libvlc_meta_Genre,
  82     [vlc_meta_Copyright]    = libvlc_meta_Copyright,
  83     [vlc_meta_Album]        = libvlc_meta_Album,
  84     [vlc_meta_TrackNumber]  = libvlc_meta_TrackNumber,
  85     [vlc_meta_Description]  = libvlc_meta_Description,
  86     [vlc_meta_Rating]       = libvlc_meta_Rating,
  87     [vlc_meta_Date]         = libvlc_meta_Date,
  88     [vlc_meta_Setting]      = libvlc_meta_Setting,
  89     [vlc_meta_URL]          = libvlc_meta_URL,
  90     [vlc_meta_Language]     = libvlc_meta_Language,
  91     [vlc_meta_NowPlaying]   = libvlc_meta_NowPlaying,
  92     [vlc_meta_ESNowPlaying] = libvlc_meta_NowPlaying,
  93     [vlc_meta_Publisher]    = libvlc_meta_Publisher,
  94     [vlc_meta_EncodedBy]    = libvlc_meta_EncodedBy,
  95     [vlc_meta_ArtworkURL]   = libvlc_meta_ArtworkURL,
  96     [vlc_meta_TrackID]      = libvlc_meta_TrackID,
  97     [vlc_meta_TrackTotal]   = libvlc_meta_TrackTotal,
  98     [vlc_meta_Director]     = libvlc_meta_Director,
  99     [vlc_meta_Season]       = libvlc_meta_Season,
 100     [vlc_meta_Episode]      = libvlc_meta_Episode,
 101     [vlc_meta_ShowName]     = libvlc_meta_ShowName,
 102     [vlc_meta_Actors]       = libvlc_meta_Actors,
 103     [vlc_meta_AlbumArtist]  = libvlc_meta_AlbumArtist,
 104     [vlc_meta_DiscNumber]   = libvlc_meta_DiscNumber
 105 };
 106
 107 static libvlc_media_list_t *media_get_subitems( libvlc_media_t * p_md,
 108                                                 bool b_create )
 109 {
 110     libvlc_media_list_t *p_subitems = NULL;
 111
 112     vlc_mutex_lock( &p_md->subitems_lock );
 113     if( p_md->p_subitems == NULL && b_create )
 114     {
 115         p_md->p_subitems = libvlc_media_list_new( p_md->p_libvlc_instance );
 116         if( p_md->p_subitems != NULL )
 117         {
 118             p_md->p_subitems->b_read_only = true;
 119             p_md->p_subitems->p_internal_md = p_md;
 120         }
 121     }
 122     p_subitems = p_md->p_subitems;
 123     vlc_mutex_unlock( &p_md->subitems_lock );
 124     return p_subitems;
 125 }
 126
 127 /**************************************************************************
 128  * input_item_subitem_added (Private) (vlc event Callback)
 129  **************************************************************************/
 130 static void input_item_subitem_added( const vlc_event_t *p_event,
 131                                        void * user_data )
 132 {
 133     libvlc_media_t * p_md = user_data;
 134     libvlc_media_t * p_md_child;
 135     libvlc_media_list_t *p_subitems;
 136     libvlc_event_t event;
 137
 138     p_md_child = libvlc_media_new_from_input_item(
 139                 p_md->p_libvlc_instance,
 140                 p_event->u.input_item_subitem_added.p_new_child );
 141
 142     /* Add this to our media list */
 143     p_subitems = media_get_subitems( p_md, true );
 144     if( p_subitems != NULL )
 145     {
 146         libvlc_media_list_lock( p_subitems );
 147         libvlc_media_list_internal_add_media( p_subitems, p_md_child );
 148         libvlc_media_list_unlock( p_subitems );
 149     }
 150
 151     /* Construct the event */
 152     event.type = libvlc_MediaSubItemAdded;
 153     event.u.media_subitem_added.new_child = p_md_child;
 154
 155     /* Send the event */
 156     libvlc_event_send( p_md->p_event_manager, &event );
 157     libvlc_media_release( p_md_child );
 158 }
 159
 160 /**************************************************************************
 161  * input_item_subitemtree_added (Private) (vlc event Callback)
 162  **************************************************************************/
 163 static void input_item_subitemtree_added( const vlc_event_t * p_event,
 164                                           void * user_data )
 165 {
 166     VLC_UNUSED( p_event );
 167     libvlc_media_t * p_md = user_data;
 168     libvlc_event_t event;
 169
 170     /* Construct the event */
 171     event.type = libvlc_MediaSubItemTreeAdded;
 172     event.u.media_subitemtree_added.item = p_md;
 173
 174     /* Send the event */
 175     libvlc_event_send( p_md->p_event_manager, &event );
 176 }
 177
 178 /**************************************************************************
 179  * input_item_meta_changed (Private) (vlc event Callback)
 180  **************************************************************************/
 181 static void input_item_meta_changed( const vlc_event_t *p_event,
 182                                      void * user_data )
 183 {
 184     libvlc_media_t * p_md = user_data;
 185     libvlc_event_t event;
 186
 187     /* Construct the event */
 188     event.type = libvlc_MediaMetaChanged;
 189     event.u.media_meta_changed.meta_type =
 190         vlc_to_libvlc_meta[p_event->u.input_item_meta_changed.meta_type];
 191
 192     /* Send the event */
 193     libvlc_event_send( p_md->p_event_manager, &event );
 194 }
 195
 196 /**************************************************************************
 197  * input_item_duration_changed (Private) (vlc event Callback)
 198  **************************************************************************/
 199 static void input_item_duration_changed( const vlc_event_t *p_event,
 200                                          void * user_data )
 201 {
 202     libvlc_media_t * p_md = user_data;
 203     libvlc_event_t event;
 204
 205     /* Construct the event */
 206     event.type = libvlc_MediaDurationChanged;
 207     event.u.media_duration_changed.new_duration =
 208         from_mtime(p_event->u.input_item_duration_changed.new_duration);
 209
 210     /* Send the event */
 211     libvlc_event_send( p_md->p_event_manager, &event );
 212 }
 213
 214 /**************************************************************************
 215  * input_item_preparsed_changed (Private) (vlc event Callback)
 216  **************************************************************************/
 217 static void input_item_preparsed_changed(const vlc_event_t *p_event,
 218                                          void * user_data)
 219 {
 220     libvlc_media_t *media = user_data;
 221     libvlc_event_t event;
 222
 223     /* Eventually notify libvlc_media_parse() */
 224     vlc_mutex_lock(&media->parsed_lock);
 225     media->is_parsed = true;
 226     vlc_cond_broadcast(&media->parsed_cond);
 227     vlc_mutex_unlock(&media->parsed_lock);
 228
 229
 230     /* Construct the event */
 231     event.type = libvlc_MediaParsedChanged;
 232     event.u.media_parsed_changed.new_status =
 233         p_event->u.input_item_preparsed_changed.new_status;
 234
 235     /* Send the event */
 236     libvlc_event_send(media->p_event_manager, &event);
 237 }
 238
 239 /**************************************************************************
 240  * input_item_preparse_ended (Private) (vlc event Callback)
 241  **************************************************************************/
 242 static void input_item_preparse_ended( const vlc_event_t * p_event,
 243                                        void * user_data )
 244 {
 245     VLC_UNUSED( p_event );
 246     libvlc_media_t * p_md = user_data;
 247     libvlc_media_list_t *p_subitems = media_get_subitems( p_md, false );
 248
 249     if( p_subitems != NULL )
 250     {
 251         /* notify the media list */
 252         libvlc_media_list_lock( p_subitems );
 253         libvlc_media_list_internal_end_reached( p_subitems );
 254         libvlc_media_list_unlock( p_subitems );
 255     }
 256 }
 257
 258 /**************************************************************************
 259  * Install event handler (Private)
 260  **************************************************************************/
 261 static void install_input_item_observer( libvlc_media_t *p_md )
 262 {
 263     vlc_event_attach( &p_md->p_input_item->event_manager,
 264                       vlc_InputItemSubItemAdded,
 265                       input_item_subitem_added,
 266                       p_md );
 267     vlc_event_attach( &p_md->p_input_item->event_manager,
 268                       vlc_InputItemMetaChanged,
 269                       input_item_meta_changed,
 270                       p_md );
 271     vlc_event_attach( &p_md->p_input_item->event_manager,
 272                       vlc_InputItemDurationChanged,
 273                       input_item_duration_changed,
 274                       p_md );
 275     vlc_event_attach( &p_md->p_input_item->event_manager,
 276                       vlc_InputItemPreparsedChanged,
 277                       input_item_preparsed_changed,
 278                       p_md );
 279     vlc_event_attach( &p_md->p_input_item->event_manager,
 280                       vlc_InputItemSubItemTreeAdded,
 281                       input_item_subitemtree_added,
 282                       p_md );
 283     vlc_event_attach( &p_md->p_input_item->event_manager,
 284                       vlc_InputItemPreparseEnded,
 285                       input_item_preparse_ended,
 286                       p_md );
 287 }
 288
 289 /**************************************************************************
 290  * Uninstall event handler (Private)
 291  **************************************************************************/
 292 static void uninstall_input_item_observer( libvlc_media_t *p_md )
 293 {
 294     vlc_event_detach( &p_md->p_input_item->event_manager,
 295                       vlc_InputItemSubItemAdded,
 296                       input_item_subitem_added,
 297                       p_md );
 298     vlc_event_detach( &p_md->p_input_item->event_manager,
 299                       vlc_InputItemMetaChanged,
 300                       input_item_meta_changed,
 301                       p_md );
 302     vlc_event_detach( &p_md->p_input_item->event_manager,
 303                       vlc_InputItemDurationChanged,
 304                       input_item_duration_changed,
 305                       p_md );
 306     vlc_event_detach( &p_md->p_input_item->event_manager,
 307                       vlc_InputItemPreparsedChanged,
 308                       input_item_preparsed_changed,
 309                       p_md );
 310     vlc_event_detach( &p_md->p_input_item->event_manager,
 311                       vlc_InputItemSubItemTreeAdded,
 312                       input_item_subitemtree_added,
 313                       p_md );
 314     vlc_event_detach( &p_md->p_input_item->event_manager,
 315                       vlc_InputItemPreparseEnded,
 316                       input_item_preparse_ended,
 317                       p_md );
 318 }
 319
 320 /**************************************************************************
 321  * Create a new media descriptor object from an input_item
 322  * (libvlc internal)
 323  * That's the generic constructor
 324  **************************************************************************/
 325 libvlc_media_t * libvlc_media_new_from_input_item(
 326                                    libvlc_instance_t *p_instance,
 327                                    input_item_t *p_input_item )
 328 {
 329     libvlc_media_t * p_md;
 330
 331     if (!p_input_item)
 332     {
 333         libvlc_printerr( "No input item given" );
 334         return NULL;
 335     }
 336
 337     p_md = calloc( 1, sizeof(libvlc_media_t) );
 338     if( !p_md )
 339     {
 340         libvlc_printerr( "Not enough memory" );
 341         return NULL;
 342     }
 343
 344     p_md->p_libvlc_instance = p_instance;
 345     p_md->p_input_item      = p_input_item;
 346     p_md->i_refcount        = 1;
 347
 348     vlc_cond_init(&p_md->parsed_cond);
 349     vlc_mutex_init(&p_md->parsed_lock);
 350     vlc_mutex_init(&p_md->subitems_lock);
 351
 352     p_md->state = libvlc_NothingSpecial;
 353
 354     /* A media descriptor can be a playlist. When you open a playlist
 355      * It can give a bunch of item to read. */
 356     p_md->p_subitems        = NULL;
 357
 358     p_md->p_event_manager = libvlc_event_manager_new( p_md, p_instance );
 359     if( unlikely(p_md->p_event_manager == NULL) )
 360     {
 361         free(p_md);
 362         return NULL;
 363     }
 364
 365     libvlc_event_manager_t *em = p_md->p_event_manager;
 366     libvlc_event_manager_register_event_type(em, libvlc_MediaMetaChanged);
 367     libvlc_event_manager_register_event_type(em, libvlc_MediaSubItemAdded);
 368     libvlc_event_manager_register_event_type(em, libvlc_MediaFreed);
 369     libvlc_event_manager_register_event_type(em, libvlc_MediaDurationChanged);
 370     libvlc_event_manager_register_event_type(em, libvlc_MediaStateChanged);
 371     libvlc_event_manager_register_event_type(em, libvlc_MediaParsedChanged);
 372     libvlc_event_manager_register_event_type(em, libvlc_MediaSubItemTreeAdded);
 373
 374     vlc_gc_incref( p_md->p_input_item );
 375
 376     install_input_item_observer( p_md );
 377
 378     return p_md;
 379 }
 380
 381 /**************************************************************************
 382  * Create a new media descriptor object
 383  **************************************************************************/
 384 libvlc_media_t *libvlc_media_new_location( libvlc_instance_t *p_instance,
 385                                            const char * psz_mrl )
 386 {
 387     input_item_t * p_input_item;
 388     libvlc_media_t * p_md;
 389
 390     p_input_item = input_item_New( psz_mrl, NULL );
 391
 392     if (!p_input_item)
 393     {
 394         libvlc_printerr( "Not enough memory" );
 395         return NULL;
 396     }
 397
 398     p_md = libvlc_media_new_from_input_item( p_instance, p_input_item );
 399
 400     /* The p_input_item is retained in libvlc_media_new_from_input_item */
 401     vlc_gc_decref( p_input_item );
 402
 403     return p_md;
 404 }
 405
 406 libvlc_media_t *libvlc_media_new_path( libvlc_instance_t *p_instance,
 407                                        const char *path )
 408 {
 409     char *mrl = vlc_path2uri( path, NULL );
 410     if( unlikely(mrl == NULL) )
 411     {
 412         libvlc_printerr( "%s", vlc_strerror_c(errno) );
 413         return NULL;
 414     }
 415
 416     libvlc_media_t *m = libvlc_media_new_location( p_instance, mrl );
 417     free( mrl );
 418     return m;
 419 }
 420
 421 libvlc_media_t *libvlc_media_new_fd( libvlc_instance_t *p_instance, int fd )
 422 {
 423     char mrl[16];
 424     snprintf( mrl, sizeof(mrl), "fd://%d", fd );
 425
 426     return libvlc_media_new_location( p_instance, mrl );
 427 }
 428
 429 libvlc_media_t *libvlc_media_new_callbacks(libvlc_instance_t *p_instance,
 430                                            libvlc_media_open_cb open_cb,
 431                                            libvlc_media_read_cb read_cb,
 432                                            libvlc_media_seek_cb seek_cb,
 433                                            libvlc_media_close_cb close_cb,
 434                                            void *opaque)
 435 {
 436     libvlc_media_t *m = libvlc_media_new_location(p_instance, "imem://");
 437     if (unlikely(m == NULL))
 438         return NULL;
 439
 440     assert(read_cb != NULL);
 441     input_item_AddOpaque(m->p_input_item, "imem-data", opaque);
 442     input_item_AddOpaque(m->p_input_item, "imem-open", open_cb);
 443     input_item_AddOpaque(m->p_input_item, "imem-read", read_cb);
 444     input_item_AddOpaque(m->p_input_item, "imem-seek", seek_cb);
 445     input_item_AddOpaque(m->p_input_item, "imem-close", close_cb);
 446     return m;
 447 }
 448
 449 /**************************************************************************
 450  * Create a new media descriptor object
 451  **************************************************************************/
 452 libvlc_media_t * libvlc_media_new_as_node( libvlc_instance_t *p_instance,
 453                                            const char * psz_name )
 454 {
 455     input_item_t * p_input_item;
 456     libvlc_media_t * p_md;
 457     libvlc_media_list_t * p_subitems;
 458
 459     p_input_item = input_item_New( "vlc://nop", psz_name );
 460
 461     if (!p_input_item)
 462     {
 463         libvlc_printerr( "Not enough memory" );
 464         return NULL;
 465     }
 466
 467     p_md = libvlc_media_new_from_input_item( p_instance, p_input_item );
 468
 469     p_subitems = media_get_subitems( p_md, true );
 470     if( p_subitems == NULL) {
 471         libvlc_media_release( p_md );
 472         return NULL;
 473     }
 474
 475     return p_md;
 476 }
 477
 478 /**************************************************************************
 479  * Add an option to the media descriptor,
 480  * that will be used to determine how the media_player will read the
 481  * media. This allow to use VLC advanced reading/streaming
 482  * options in a per-media basis
 483  *
 484  * The options are detailled in vlc --long-help, for instance "--sout-all"
 485  **************************************************************************/
 486 void libvlc_media_add_option( libvlc_media_t * p_md,
 487                               const char * psz_option )
 488 {
 489     libvlc_media_add_option_flag( p_md, psz_option,
 490                           VLC_INPUT_OPTION_UNIQUE|VLC_INPUT_OPTION_TRUSTED );
 491 }
 492
 493 /**************************************************************************
 494  * Same as libvlc_media_add_option but with configurable flags.
 495  **************************************************************************/
 496 void libvlc_media_add_option_flag( libvlc_media_t * p_md,
 497                                    const char * ppsz_option,
 498                                    unsigned i_flags )
 499 {
 500     input_item_AddOption( p_md->p_input_item, ppsz_option, i_flags );
 501 }
 502
 503 /**************************************************************************
 504  * Delete a media descriptor object
 505  **************************************************************************/
 506 void libvlc_media_release( libvlc_media_t *p_md )
 507 {
 508     if (!p_md)
 509         return;
 510
 511     p_md->i_refcount--;
 512
 513     if( p_md->i_refcount > 0 )
 514         return;
 515
 516     if( p_md->p_subitems )
 517         libvlc_media_list_release( p_md->p_subitems );
 518
 519     uninstall_input_item_observer( p_md );
 520     vlc_gc_decref( p_md->p_input_item );
 521
 522     vlc_cond_destroy( &p_md->parsed_cond );
 523     vlc_mutex_destroy( &p_md->parsed_lock );
 524     vlc_mutex_destroy( &p_md->subitems_lock );
 525
 526     /* Construct the event */
 527     libvlc_event_t event;
 528     event.type = libvlc_MediaFreed;
 529     event.u.media_freed.md = p_md;
 530
 531     /* Send the event */
 532     libvlc_event_send( p_md->p_event_manager, &event );
 533
 534     libvlc_event_manager_release( p_md->p_event_manager );
 535
 536     free( p_md );
 537 }
 538
 539 /**************************************************************************
 540  * Retain a media descriptor object
 541  **************************************************************************/
 542 void libvlc_media_retain( libvlc_media_t *p_md )
 543 {
 544     assert (p_md);
 545     p_md->i_refcount++;
 546 }
 547
 548 /**************************************************************************
 549  * Duplicate a media descriptor object
 550  **************************************************************************/
 551 libvlc_media_t *
 552 libvlc_media_duplicate( libvlc_media_t *p_md_orig )
 553 {
 554     return libvlc_media_new_from_input_item(
 555         p_md_orig->p_libvlc_instance, p_md_orig->p_input_item );
 556 }
 557
 558 /**************************************************************************
 559  * Get mrl from a media descriptor object
 560  **************************************************************************/
 561 char *
 562 libvlc_media_get_mrl( libvlc_media_t * p_md )
 563 {
 564     assert( p_md );
 565     return input_item_GetURI( p_md->p_input_item );
 566 }
 567
 568 /**************************************************************************
 569  * Getter for meta information
 570  **************************************************************************/
 571
 572 char *libvlc_media_get_meta( libvlc_media_t *p_md, libvlc_meta_t e_meta )
 573 {
 574     char *psz_meta = NULL;
 575
 576     if( e_meta == libvlc_meta_NowPlaying )
 577     {
 578         psz_meta = input_item_GetNowPlayingFb( p_md->p_input_item );
 579     }
 580     else
 581     {
 582         psz_meta = input_item_GetMeta( p_md->p_input_item,
 583                                              libvlc_to_vlc_meta[e_meta] );
 584         /* Should be integrated in core */
 585         if( psz_meta == NULL && e_meta == libvlc_meta_Title
 586          && p_md->p_input_item->psz_name != NULL )
 587             psz_meta = strdup( p_md->p_input_item->psz_name );
 588     }
 589     return psz_meta;
 590 }
 591
 592 /**************************************************************************
 593  * Setter for meta information
 594  **************************************************************************/
 595
 596 void libvlc_media_set_meta( libvlc_media_t *p_md, libvlc_meta_t e_meta, const char *psz_value )
 597 {
 598     assert( p_md );
 599     input_item_SetMeta( p_md->p_input_item, libvlc_to_vlc_meta[e_meta], psz_value );
 600 }
 601
 602 int libvlc_media_save_meta( libvlc_media_t *p_md )
 603 {
 604     assert( p_md );
 605     vlc_object_t *p_obj = VLC_OBJECT(p_md->p_libvlc_instance->p_libvlc_int);
 606     return input_item_WriteMeta( p_obj, p_md->p_input_item ) == VLC_SUCCESS;
 607 }
 608
 609 /**************************************************************************
 610  * Getter for state information
 611  * Can be error, playing, buffering, NothingSpecial.
 612  **************************************************************************/
 613
 614 libvlc_state_t
 615 libvlc_media_get_state( libvlc_media_t *p_md )
 616 {
 617     assert( p_md );
 618     return p_md->state;
 619 }
 620
 621 /**************************************************************************
 622  * Setter for state information (LibVLC Internal)
 623  **************************************************************************/
 624
 625 void
 626 libvlc_media_set_state( libvlc_media_t *p_md,
 627                                    libvlc_state_t state )
 628 {
 629     libvlc_event_t event;
 630
 631     p_md->state = state;
 632
 633     /* Construct the event */
 634     event.type = libvlc_MediaStateChanged;
 635     event.u.media_state_changed.new_state = state;
 636
 637     /* Send the event */
 638     libvlc_event_send( p_md->p_event_manager, &event );
 639 }
 640
 641 /**************************************************************************
 642  * subitems
 643  **************************************************************************/
 644 libvlc_media_list_t *
 645 libvlc_media_subitems( libvlc_media_t * p_md )
 646 {
 647     libvlc_media_list_t *p_subitems = media_get_subitems( p_md, true );
 648     if( p_subitems )
 649         libvlc_media_list_retain( p_subitems );
 650     return p_subitems;
 651 }
 652
 653 /**************************************************************************
 654  * Getter for statistics information
 655  **************************************************************************/
 656 int libvlc_media_get_stats( libvlc_media_t *p_md,
 657                             libvlc_media_stats_t *p_stats )
 658 {
 659     if( !p_md->p_input_item )
 660         return false;
 661
 662     input_stats_t *p_itm_stats = p_md->p_input_item->p_stats;
 663     vlc_mutex_lock( &p_itm_stats->lock );
 664     p_stats->i_read_bytes = p_itm_stats->i_read_bytes;
 665     p_stats->f_input_bitrate = p_itm_stats->f_input_bitrate;
 666
 667     p_stats->i_demux_read_bytes = p_itm_stats->i_demux_read_bytes;
 668     p_stats->f_demux_bitrate = p_itm_stats->f_demux_bitrate;
 669     p_stats->i_demux_corrupted = p_itm_stats->i_demux_corrupted;
 670     p_stats->i_demux_discontinuity = p_itm_stats->i_demux_discontinuity;
 671
 672     p_stats->i_decoded_video = p_itm_stats->i_decoded_video;
 673     p_stats->i_decoded_audio = p_itm_stats->i_decoded_audio;
 674
 675     p_stats->i_displayed_pictures = p_itm_stats->i_displayed_pictures;
 676     p_stats->i_lost_pictures = p_itm_stats->i_lost_pictures;
 677
 678     p_stats->i_played_abuffers = p_itm_stats->i_played_abuffers;
 679     p_stats->i_lost_abuffers = p_itm_stats->i_lost_abuffers;
 680
 681     p_stats->i_sent_packets = p_itm_stats->i_sent_packets;
 682     p_stats->i_sent_bytes = p_itm_stats->i_sent_bytes;
 683     p_stats->f_send_bitrate = p_itm_stats->f_send_bitrate;
 684     vlc_mutex_unlock( &p_itm_stats->lock );
 685     return true;
 686 }
 687
 688 /**************************************************************************
 689  * event_manager
 690  **************************************************************************/
 691 libvlc_event_manager_t *
 692 libvlc_media_event_manager( libvlc_media_t * p_md )
 693 {
 694     assert( p_md );
 695
 696     return p_md->p_event_manager;
 697 }
 698
 699 /**************************************************************************
 700  * Get duration of media object (in ms)
 701  **************************************************************************/
 702 int64_t
 703 libvlc_media_get_duration( libvlc_media_t * p_md )
 704 {
 705     assert( p_md );
 706
 707     if( !p_md->p_input_item )
 708     {
 709         libvlc_printerr( "No input item" );
 710         return -1;
 711     }
 712
 713     if (!input_item_IsPreparsed( p_md->p_input_item ))
 714         return -1;
 715
 716     return from_mtime(input_item_GetDuration( p_md->p_input_item ));
 717 }
 718
 719 static int media_parse(libvlc_media_t *media, bool b_async,
 720                        libvlc_media_parse_flag_t parse_flag)
 721 {
 722     bool needed;
 723
 724     vlc_mutex_lock(&media->parsed_lock);
 725     needed = !media->has_asked_preparse;
 726     media->has_asked_preparse = true;
 727     vlc_mutex_unlock(&media->parsed_lock);
 728
 729     if (needed)
 730     {
 731         libvlc_int_t *libvlc = media->p_libvlc_instance->p_libvlc_int;
 732         input_item_t *item = media->p_input_item;
 733         input_item_meta_request_option_t art_scope = META_REQUEST_OPTION_NONE;
 734         input_item_meta_request_option_t parse_scope = META_REQUEST_OPTION_SCOPE_LOCAL;
 735         int ret;
 736
 737         if (parse_flag & libvlc_media_fetch_local)
 738             art_scope |= META_REQUEST_OPTION_SCOPE_LOCAL;
 739         if (parse_flag & libvlc_media_fetch_network)
 740             art_scope |= META_REQUEST_OPTION_SCOPE_NETWORK;
 741         if (art_scope != META_REQUEST_OPTION_NONE) {
 742             ret = libvlc_ArtRequest(libvlc, item, art_scope);
 743             if (ret != VLC_SUCCESS)
 744                 return ret;
 745         }
 746
 747         if (parse_flag & libvlc_media_parse_network)
 748             parse_scope |= META_REQUEST_OPTION_SCOPE_NETWORK;
 749         ret = libvlc_MetaRequest(libvlc, item, parse_scope);
 750         if (ret != VLC_SUCCESS)
 751             return ret;
 752     }
 753     else
 754         return VLC_EGENERIC;
 755
 756     if (!b_async)
 757     {
 758         vlc_mutex_lock(&media->parsed_lock);
 759         while (!media->is_parsed)
 760             vlc_cond_wait(&media->parsed_cond, &media->parsed_lock);
 761         vlc_mutex_unlock(&media->parsed_lock);
 762     }
 763     return VLC_SUCCESS;
 764 }
 765
 766 /**************************************************************************
 767  * Parse the media and wait.
 768  **************************************************************************/
 769 void
 770 libvlc_media_parse(libvlc_media_t *media)
 771 {
 772     media_parse( media, false, libvlc_media_fetch_local );
 773 }
 774
 775 /**************************************************************************
 776  * Parse the media but do not wait.
 777  **************************************************************************/
 778 void
 779 libvlc_media_parse_async(libvlc_media_t *media)
 780 {
 781     media_parse( media, true, libvlc_media_fetch_local );
 782 }
 783
 784 /**************************************************************************
 785  * Parse the media asynchronously with options.
 786  **************************************************************************/
 787 int
 788 libvlc_media_parse_with_options( libvlc_media_t *media,
 789                                  libvlc_media_parse_flag_t parse_flag )
 790 {
 791     return media_parse( media, true, parse_flag ) == VLC_SUCCESS ? 0 : -1;
 792 }
 793
 794 /**************************************************************************
 795  * Get parsed status for media object.
 796  **************************************************************************/
 797 int
 798 libvlc_media_is_parsed(libvlc_media_t *media)
 799 {
 800     bool parsed;
 801
 802     vlc_mutex_lock(&media->parsed_lock);
 803     parsed = media->is_parsed;
 804     vlc_mutex_unlock(&media->parsed_lock);
 805     return parsed;
 806 }
 807
 808 /**************************************************************************
 809  * Sets media descriptor's user_data. user_data is specialized data
 810  * accessed by the host application, VLC.framework uses it as a pointer to
 811  * an native object that references a libvlc_media_t pointer
 812  **************************************************************************/
 813 void
 814 libvlc_media_set_user_data( libvlc_media_t * p_md, void * p_new_user_data )
 815 {
 816     assert( p_md );
 817     p_md->p_user_data = p_new_user_data;
 818 }
 819
 820 /**************************************************************************
 821  * Get media descriptor's user_data. user_data is specialized data
 822  * accessed by the host application, VLC.framework uses it as a pointer to
 823  * an native object that references a libvlc_media_t pointer
 824  **************************************************************************/
 825 void *
 826 libvlc_media_get_user_data( libvlc_media_t * p_md )
 827 {
 828     assert( p_md );
 829     return p_md->p_user_data;
 830 }
 831
 832 /**************************************************************************
 833  * Get media descriptor's elementary streams description
 834  **************************************************************************/
 835 int
 836 libvlc_media_get_tracks_info( libvlc_media_t *p_md, libvlc_media_track_info_t ** pp_es )
 837 {
 838     assert( p_md );
 839
 840     input_item_t *p_input_item = p_md->p_input_item;
 841     vlc_mutex_lock( &p_input_item->lock );
 842
 843     const int i_es = p_input_item->i_es;
 844     *pp_es = (i_es > 0) ? malloc( i_es * sizeof(libvlc_media_track_info_t) ) : NULL;
 845
 846     if( !*pp_es ) /* no ES, or OOM */
 847     {
 848         vlc_mutex_unlock( &p_input_item->lock );
 849         return 0;
 850     }
 851
 852     /* Fill array */
 853     for( int i = 0; i < i_es; i++ )
 854     {
 855         libvlc_media_track_info_t *p_mes = *pp_es+i;
 856         const es_format_t *p_es = p_input_item->es[i];
 857
 858         p_mes->i_codec = p_es->i_codec;
 859         p_mes->i_id = p_es->i_id;
 860
 861         p_mes->i_profile = p_es->i_profile;
 862         p_mes->i_level = p_es->i_level;
 863
 864         switch(p_es->i_cat)
 865         {
 866         case UNKNOWN_ES:
 867         default:
 868             p_mes->i_type = libvlc_track_unknown;
 869             break;
 870         case VIDEO_ES:
 871             p_mes->i_type = libvlc_track_video;
 872             p_mes->u.video.i_height = p_es->video.i_height;
 873             p_mes->u.video.i_width = p_es->video.i_width;
 874             break;
 875         case AUDIO_ES:
 876             p_mes->i_type = libvlc_track_audio;
 877             p_mes->u.audio.i_channels = p_es->audio.i_channels;
 878             p_mes->u.audio.i_rate = p_es->audio.i_rate;
 879             break;
 880         case SPU_ES:
 881             p_mes->i_type = libvlc_track_text;
 882             break;
 883         }
 884     }
 885
 886     vlc_mutex_unlock( &p_input_item->lock );
 887     return i_es;
 888 }
 889
 890 unsigned
 891 libvlc_media_tracks_get( libvlc_media_t *p_md, libvlc_media_track_t *** pp_es )
 892 {
 893     assert( p_md );
 894
 895     input_item_t *p_input_item = p_md->p_input_item;
 896     vlc_mutex_lock( &p_input_item->lock );
 897
 898     const int i_es = p_input_item->i_es;
 899     *pp_es = (i_es > 0) ? calloc( i_es, sizeof(**pp_es) ) : NULL;
 900
 901     if( !*pp_es ) /* no ES, or OOM */
 902     {
 903         vlc_mutex_unlock( &p_input_item->lock );
 904         return 0;
 905     }
 906
 907     /* Fill array */
 908     for( int i = 0; i < i_es; i++ )
 909     {
 910         libvlc_media_track_t *p_mes = calloc( 1, sizeof(*p_mes) );
 911         if ( p_mes )
 912         {
 913             p_mes->audio = malloc( __MAX(__MAX(sizeof(*p_mes->audio),
 914                                                sizeof(*p_mes->video)),
 915                                                sizeof(*p_mes->subtitle)) );
 916         }
 917         if ( !p_mes || !p_mes->audio )
 918         {
 919             libvlc_media_tracks_release( *pp_es, i_es );
 920             *pp_es = NULL;
 921             free( p_mes );
 922             vlc_mutex_unlock( &p_input_item->lock );
 923             return 0;
 924         }
 925         (*pp_es)[i] = p_mes;
 926
 927         const es_format_t *p_es = p_input_item->es[i];
 928
 929         p_mes->i_codec = p_es->i_codec;
 930         p_mes->i_original_fourcc = p_es->i_original_fourcc;
 931         p_mes->i_id = p_es->i_id;
 932
 933         p_mes->i_profile = p_es->i_profile;
 934         p_mes->i_level = p_es->i_level;
 935
 936         p_mes->i_bitrate = p_es->i_bitrate;
 937         p_mes->psz_language = p_es->psz_language != NULL ? strdup(p_es->psz_language) : NULL;
 938         p_mes->psz_description = p_es->psz_description != NULL ? strdup(p_es->psz_description) : NULL;
 939
 940         switch(p_es->i_cat)
 941         {
 942         case UNKNOWN_ES:
 943         default:
 944             p_mes->i_type = libvlc_track_unknown;
 945             break;
 946         case VIDEO_ES:
 947             p_mes->i_type = libvlc_track_video;
 948             p_mes->video->i_height = p_es->video.i_height;
 949             p_mes->video->i_width = p_es->video.i_width;
 950             p_mes->video->i_sar_num = p_es->video.i_sar_num;
 951             p_mes->video->i_sar_den = p_es->video.i_sar_den;
 952             p_mes->video->i_frame_rate_num = p_es->video.i_frame_rate;
 953             p_mes->video->i_frame_rate_den = p_es->video.i_frame_rate_base;
 954             break;
 955         case AUDIO_ES:
 956             p_mes->i_type = libvlc_track_audio;
 957             p_mes->audio->i_channels = p_es->audio.i_channels;
 958             p_mes->audio->i_rate = p_es->audio.i_rate;
 959             break;
 960         case SPU_ES:
 961             p_mes->i_type = libvlc_track_text;
 962             p_mes->subtitle->psz_encoding = p_es->subs.psz_encoding != NULL ?
 963                                             strdup(p_es->subs.psz_encoding) : NULL;
 964             break;
 965         }
 966     }
 967
 968     vlc_mutex_unlock( &p_input_item->lock );
 969     return i_es;
 970 }
 971
 972 /**************************************************************************
 973  * Get codec description from media elementary stream
 974  **************************************************************************/
 975 const char *
 976 libvlc_media_get_codec_description( libvlc_track_type_t i_type,
 977                                     uint32_t i_codec )
 978 {
 979     switch( i_type )
 980     {
 981         case libvlc_track_audio:
 982             return vlc_fourcc_GetDescription( AUDIO_ES, i_codec );
 983         case libvlc_track_video:
 984             return vlc_fourcc_GetDescription( VIDEO_ES, i_codec );
 985         case libvlc_track_text:
 986             return vlc_fourcc_GetDescription( SPU_ES, i_codec );
 987         case libvlc_track_unknown:
 988         default:
 989             return vlc_fourcc_GetDescription( UNKNOWN_ES, i_codec );
 990     }
 991 }
 992
 993 /**************************************************************************
 994  * Release media descriptor's elementary streams description array
 995  **************************************************************************/
 996 void libvlc_media_tracks_release( libvlc_media_track_t **p_tracks, unsigned i_count )
 997 {
 998     for( unsigned i = 0; i < i_count; ++i )
 999     {
1000         if ( !p_tracks[i] )
1001             continue;
1002         free( p_tracks[i]->psz_language );
1003         free( p_tracks[i]->psz_description );
1004         switch( p_tracks[i]->i_type )
1005         {
1006         case libvlc_track_audio:
1007             break;
1008         case libvlc_track_video:
1009             break;
1010         case libvlc_track_text:
1011             free( p_tracks[i]->subtitle->psz_encoding );
1012             break;
1013         case libvlc_track_unknown:
1014         default:
1015             break;
1016         }
1017         free( p_tracks[i]->audio );
1018         free( p_tracks[i] );
1019     }
1020     free( p_tracks );
1021 }
1022
1023 /**************************************************************************
1024  * Get the media type of the media descriptor object
1025  **************************************************************************/
1026 libvlc_media_type_t libvlc_media_get_type( libvlc_media_t *p_md )
1027 {
1028     assert( p_md );
1029
1030     int i_type;
1031     input_item_t *p_input_item = p_md->p_input_item;
1032
1033     vlc_mutex_lock( &p_input_item->lock );
1034     i_type = p_md->p_input_item->i_type;
1035     vlc_mutex_unlock( &p_input_item->lock );
1036
1037     switch( i_type )
1038     {
1039     case ITEM_TYPE_FILE:
1040         return libvlc_media_type_file;
1041     case ITEM_TYPE_NODE:
1042     case ITEM_TYPE_DIRECTORY:
1043         return libvlc_media_type_directory;
1044     case ITEM_TYPE_DISC:
1045         return libvlc_media_type_disc;
1046     case ITEM_TYPE_STREAM:
1047         return libvlc_media_type_stream;
1048     case ITEM_TYPE_PLAYLIST:
1049         return libvlc_media_type_playlist;
1050     default:
1051         return libvlc_media_type_unknown;
1052     }
1053 }