lib/media.c

   1 /*****************************************************************************
   2  * media.c: Libvlc API media descripor management
   3  *****************************************************************************
   4  * Copyright (C) 2007 the VideoLAN team
   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
  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.
  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 General Public License for more details.
  18  *
  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  *****************************************************************************/
  23
  24 #ifdef HAVE_CONFIG_H
  25 # include "config.h"
  26 #endif
  27
  28 #include <assert.h>
  29
  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>
  34
  35 #include <vlc_common.h>
  36 #include <vlc_input.h>
  37 #include <vlc_meta.h>
  38 #include <vlc_playlist.h> /* For the preparser */
  39 #include <vlc_url.h>
  40
  41 #include "../src/libvlc.h"
  42
  43 #include "libvlc_internal.h"
  44 #include "media_internal.h"
  45
  46 static const vlc_meta_type_t libvlc_to_vlc_meta[] =
  47 {
  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
  65 };
  66
  67 static const libvlc_meta_t vlc_to_libvlc_meta[] =
  68 {
  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
  86 };
  87
  88 /**************************************************************************
  89  * input_item_subitem_added (Private) (vlc event Callback)
  90  **************************************************************************/
  91 static void input_item_subitem_added( const vlc_event_t *p_event,
  92                                        void * user_data )
  93 {
  94     libvlc_media_t * p_md = user_data;
  95     libvlc_media_t * p_md_child;
  96     libvlc_event_t event;
  97
  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 );
 101
 102     /* Add this to our media list */
 103     if( !p_md->p_subitems )
 104     {
 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 );
 107     }
 108     if( p_md->p_subitems )
 109     {
 110         libvlc_media_list_add_media( p_md->p_subitems, p_md_child );
 111     }
 112
 113     /* Construct the event */
 114     event.type = libvlc_MediaSubItemAdded;
 115     event.u.media_subitem_added.new_child = p_md_child;
 116
 117     /* Send the event */
 118     libvlc_event_send( p_md->p_event_manager, &event );
 119     libvlc_media_release( p_md_child );
 120 }
 121
 122 /**************************************************************************
 123  * input_item_meta_changed (Private) (vlc event Callback)
 124  **************************************************************************/
 125 static void input_item_meta_changed( const vlc_event_t *p_event,
 126                                      void * user_data )
 127 {
 128     libvlc_media_t * p_md = user_data;
 129     libvlc_event_t event;
 130
 131     /* Construct the event */
 132     event.type = libvlc_MediaMetaChanged;
 133     event.u.media_meta_changed.meta_type =
 134         vlc_to_libvlc_meta[p_event->u.input_item_meta_changed.meta_type];
 135
 136     /* Send the event */
 137     libvlc_event_send( p_md->p_event_manager, &event );
 138 }
 139
 140 /**************************************************************************
 141  * input_item_duration_changed (Private) (vlc event Callback)
 142  **************************************************************************/
 143 static void input_item_duration_changed( const vlc_event_t *p_event,
 144                                          void * user_data )
 145 {
 146     libvlc_media_t * p_md = user_data;
 147     libvlc_event_t event;
 148
 149     /* Construct the event */
 150     event.type = libvlc_MediaDurationChanged;
 151     event.u.media_duration_changed.new_duration =
 152         from_mtime(p_event->u.input_item_duration_changed.new_duration);
 153
 154     /* Send the event */
 155     libvlc_event_send( p_md->p_event_manager, &event );
 156 }
 157
 158 /**************************************************************************
 159  * input_item_preparsed_changed (Private) (vlc event Callback)
 160  **************************************************************************/
 161 static void input_item_preparsed_changed(const vlc_event_t *p_event,
 162                                          void * user_data)
 163 {
 164     libvlc_media_t *media = user_data;
 165     libvlc_event_t event;
 166
 167     /* Eventually notify libvlc_media_parse() */
 168     vlc_mutex_lock(&media->parsed_lock);
 169     media->is_parsed = true;
 170     vlc_cond_broadcast(&media->parsed_cond);
 171     vlc_mutex_unlock(&media->parsed_lock);
 172
 173
 174     /* Construct the event */
 175     event.type = libvlc_MediaParsedChanged;
 176     event.u.media_parsed_changed.new_status =
 177         p_event->u.input_item_preparsed_changed.new_status;
 178
 179     /* Send the event */
 180     libvlc_event_send(media->p_event_manager, &event);
 181 }
 182
 183 /**************************************************************************
 184  * Install event handler (Private)
 185  **************************************************************************/
 186 static void install_input_item_observer( libvlc_media_t *p_md )
 187 {
 188     vlc_event_attach( &p_md->p_input_item->event_manager,
 189                       vlc_InputItemSubItemAdded,
 190                       input_item_subitem_added,
 191                       p_md );
 192     vlc_event_attach( &p_md->p_input_item->event_manager,
 193                       vlc_InputItemMetaChanged,
 194                       input_item_meta_changed,
 195                       p_md );
 196     vlc_event_attach( &p_md->p_input_item->event_manager,
 197                       vlc_InputItemDurationChanged,
 198                       input_item_duration_changed,
 199                       p_md );
 200     vlc_event_attach( &p_md->p_input_item->event_manager,
 201                       vlc_InputItemPreparsedChanged,
 202                       input_item_preparsed_changed,
 203                       p_md );
 204 }
 205
 206 /**************************************************************************
 207  * Uninstall event handler (Private)
 208  **************************************************************************/
 209 static void uninstall_input_item_observer( libvlc_media_t *p_md )
 210 {
 211     vlc_event_detach( &p_md->p_input_item->event_manager,
 212                       vlc_InputItemSubItemAdded,
 213                       input_item_subitem_added,
 214                       p_md );
 215     vlc_event_detach( &p_md->p_input_item->event_manager,
 216                       vlc_InputItemMetaChanged,
 217                       input_item_meta_changed,
 218                       p_md );
 219     vlc_event_detach( &p_md->p_input_item->event_manager,
 220                       vlc_InputItemDurationChanged,
 221                       input_item_duration_changed,
 222                       p_md );
 223     vlc_event_detach( &p_md->p_input_item->event_manager,
 224                       vlc_InputItemPreparsedChanged,
 225                       input_item_preparsed_changed,
 226                       p_md );
 227 }
 228
 229 /**************************************************************************
 230  * Create a new media descriptor object from an input_item
 231  * (libvlc internal)
 232  * That's the generic constructor
 233  **************************************************************************/
 234 libvlc_media_t * libvlc_media_new_from_input_item(
 235                                    libvlc_instance_t *p_instance,
 236                                    input_item_t *p_input_item )
 237 {
 238     libvlc_media_t * p_md;
 239
 240     if (!p_input_item)
 241     {
 242         libvlc_printerr( "No input item given" );
 243         return NULL;
 244     }
 245
 246     p_md = calloc( 1, sizeof(libvlc_media_t) );
 247     if( !p_md )
 248     {
 249         libvlc_printerr( "Not enough memory" );
 250         return NULL;
 251     }
 252
 253     p_md->p_libvlc_instance = p_instance;
 254     p_md->p_input_item      = p_input_item;
 255     p_md->i_refcount        = 1;
 256
 257     vlc_cond_init(&p_md->parsed_cond);
 258     vlc_mutex_init(&p_md->parsed_lock);
 259
 260     p_md->state = libvlc_NothingSpecial;
 261
 262     /* A media descriptor can be a playlist. When you open a playlist
 263      * It can give a bunch of item to read. */
 264     p_md->p_subitems        = NULL;
 265
 266     p_md->p_event_manager = libvlc_event_manager_new( p_md, p_instance );
 267     if( unlikely(p_md->p_event_manager == NULL) )
 268     {
 269         free(p_md);
 270         return NULL;
 271     }
 272
 273     libvlc_event_manager_t *em = p_md->p_event_manager;
 274     libvlc_event_manager_register_event_type(em, libvlc_MediaMetaChanged);
 275     libvlc_event_manager_register_event_type(em, libvlc_MediaSubItemAdded);
 276     libvlc_event_manager_register_event_type(em, libvlc_MediaFreed);
 277     libvlc_event_manager_register_event_type(em, libvlc_MediaDurationChanged);
 278     libvlc_event_manager_register_event_type(em, libvlc_MediaStateChanged);
 279     libvlc_event_manager_register_event_type(em, libvlc_MediaParsedChanged);
 280
 281     vlc_gc_incref( p_md->p_input_item );
 282
 283     install_input_item_observer( p_md );
 284
 285     return p_md;
 286 }
 287
 288 /**************************************************************************
 289  * Create a new media descriptor object
 290  **************************************************************************/
 291 libvlc_media_t *libvlc_media_new_location( libvlc_instance_t *p_instance,
 292                                            const char * psz_mrl )
 293 {
 294     input_item_t * p_input_item;
 295     libvlc_media_t * p_md;
 296
 297     p_input_item = input_item_New( psz_mrl, NULL );
 298
 299     if (!p_input_item)
 300     {
 301         libvlc_printerr( "Not enough memory" );
 302         return NULL;
 303     }
 304
 305     p_md = libvlc_media_new_from_input_item( p_instance, p_input_item );
 306
 307     /* The p_input_item is retained in libvlc_media_new_from_input_item */
 308     vlc_gc_decref( p_input_item );
 309
 310     return p_md;
 311 }
 312
 313 libvlc_media_t *libvlc_media_new_path( libvlc_instance_t *p_instance,
 314                                        const char *path )
 315 {
 316     char *mrl = make_URI( path, "file" );
 317     if( unlikely(mrl == NULL) )
 318     {
 319         libvlc_printerr( "Not enough memory" );
 320         return NULL;
 321     }
 322
 323     libvlc_media_t *m = libvlc_media_new_location( p_instance, mrl );
 324     free( mrl );
 325     return m;
 326 }
 327
 328 libvlc_media_t *libvlc_media_new_fd( libvlc_instance_t *p_instance, int fd )
 329 {
 330     char mrl[16];
 331     snprintf( mrl, sizeof(mrl), "fd://%d", fd );
 332
 333     return libvlc_media_new_location( p_instance, mrl );
 334 }
 335
 336 /**************************************************************************
 337  * Create a new media descriptor object
 338  **************************************************************************/
 339 libvlc_media_t * libvlc_media_new_as_node( libvlc_instance_t *p_instance,
 340                                            const char * psz_name )
 341 {
 342     input_item_t * p_input_item;
 343     libvlc_media_t * p_md;
 344
 345     p_input_item = input_item_New( "vlc://nop", psz_name );
 346
 347     if (!p_input_item)
 348     {
 349         libvlc_printerr( "Not enough memory" );
 350         return NULL;
 351     }
 352
 353     p_md = libvlc_media_new_from_input_item( p_instance, p_input_item );
 354
 355     p_md->p_subitems = libvlc_media_list_new( p_md->p_libvlc_instance );
 356
 357     return p_md;
 358 }
 359
 360 /**************************************************************************
 361  * Add an option to the media descriptor,
 362  * that will be used to determine how the media_player will read the
 363  * media. This allow to use VLC advanced reading/streaming
 364  * options in a per-media basis
 365  *
 366  * The options are detailled in vlc --long-help, for instance "--sout-all"
 367  **************************************************************************/
 368 void libvlc_media_add_option( libvlc_media_t * p_md,
 369                               const char * psz_option )
 370 {
 371     libvlc_media_add_option_flag( p_md, psz_option,
 372                           VLC_INPUT_OPTION_UNIQUE|VLC_INPUT_OPTION_TRUSTED );
 373 }
 374
 375 /**************************************************************************
 376  * Same as libvlc_media_add_option but with configurable flags.
 377  **************************************************************************/
 378 void libvlc_media_add_option_flag( libvlc_media_t * p_md,
 379                                    const char * ppsz_option,
 380                                    unsigned i_flags )
 381 {
 382     input_item_AddOption( p_md->p_input_item, ppsz_option, i_flags );
 383 }
 384
 385 /**************************************************************************
 386  * Delete a media descriptor object
 387  **************************************************************************/
 388 void libvlc_media_release( libvlc_media_t *p_md )
 389 {
 390     if (!p_md)
 391         return;
 392
 393     p_md->i_refcount--;
 394
 395     if( p_md->i_refcount > 0 )
 396         return;
 397
 398     if( p_md->p_subitems )
 399         libvlc_media_list_release( p_md->p_subitems );
 400
 401     uninstall_input_item_observer( p_md );
 402     vlc_gc_decref( p_md->p_input_item );
 403
 404     vlc_cond_destroy( &p_md->parsed_cond );
 405     vlc_mutex_destroy( &p_md->parsed_lock );
 406
 407     /* Construct the event */
 408     libvlc_event_t event;
 409     event.type = libvlc_MediaFreed;
 410     event.u.media_freed.md = p_md;
 411
 412     /* Send the event */
 413     libvlc_event_send( p_md->p_event_manager, &event );
 414
 415     libvlc_event_manager_release( p_md->p_event_manager );
 416
 417     free( p_md );
 418 }
 419
 420 /**************************************************************************
 421  * Retain a media descriptor object
 422  **************************************************************************/
 423 void libvlc_media_retain( libvlc_media_t *p_md )
 424 {
 425     assert (p_md);
 426     p_md->i_refcount++;
 427 }
 428
 429 /**************************************************************************
 430  * Duplicate a media descriptor object
 431  **************************************************************************/
 432 libvlc_media_t *
 433 libvlc_media_duplicate( libvlc_media_t *p_md_orig )
 434 {
 435     return libvlc_media_new_from_input_item(
 436         p_md_orig->p_libvlc_instance, p_md_orig->p_input_item );
 437 }
 438
 439 /**************************************************************************
 440  * Get mrl from a media descriptor object
 441  **************************************************************************/
 442 char *
 443 libvlc_media_get_mrl( libvlc_media_t * p_md )
 444 {
 445     assert( p_md );
 446     return input_item_GetURI( p_md->p_input_item );
 447 }
 448
 449 /**************************************************************************
 450  * Getter for meta information
 451  **************************************************************************/
 452
 453 char *libvlc_media_get_meta( libvlc_media_t *p_md, libvlc_meta_t e_meta )
 454 {
 455     char *psz_meta = input_item_GetMeta( p_md->p_input_item,
 456                                          libvlc_to_vlc_meta[e_meta] );
 457     /* Should be integrated in core */
 458     if( psz_meta == NULL && e_meta == libvlc_meta_Title
 459      && p_md->p_input_item->psz_name != NULL )
 460         psz_meta = strdup( p_md->p_input_item->psz_name );
 461
 462     return psz_meta;
 463 }
 464
 465 /**************************************************************************
 466  * Setter for meta information
 467  **************************************************************************/
 468
 469 void libvlc_media_set_meta( libvlc_media_t *p_md, libvlc_meta_t e_meta, const char *psz_value )
 470 {
 471     assert( p_md );
 472     input_item_SetMeta( p_md->p_input_item, libvlc_to_vlc_meta[e_meta], psz_value );
 473 }
 474
 475 int libvlc_media_save_meta( libvlc_media_t *p_md )
 476 {
 477     assert( p_md );
 478     vlc_object_t *p_obj = VLC_OBJECT(libvlc_priv(
 479                             p_md->p_libvlc_instance->p_libvlc_int)->p_playlist);
 480     return input_item_WriteMeta( p_obj, p_md->p_input_item ) == VLC_SUCCESS;
 481 }
 482
 483 /**************************************************************************
 484  * Getter for state information
 485  * Can be error, playing, buffering, NothingSpecial.
 486  **************************************************************************/
 487
 488 libvlc_state_t
 489 libvlc_media_get_state( libvlc_media_t *p_md )
 490 {
 491     assert( p_md );
 492     return p_md->state;
 493 }
 494
 495 /**************************************************************************
 496  * Setter for state information (LibVLC Internal)
 497  **************************************************************************/
 498
 499 void
 500 libvlc_media_set_state( libvlc_media_t *p_md,
 501                                    libvlc_state_t state )
 502 {
 503     libvlc_event_t event;
 504
 505     p_md->state = state;
 506
 507     /* Construct the event */
 508     event.type = libvlc_MediaStateChanged;
 509     event.u.media_state_changed.new_state = state;
 510
 511     /* Send the event */
 512     libvlc_event_send( p_md->p_event_manager, &event );
 513 }
 514
 515 /**************************************************************************
 516  * subitems
 517  **************************************************************************/
 518 libvlc_media_list_t *
 519 libvlc_media_subitems( libvlc_media_t * p_md )
 520 {
 521     if( p_md->p_subitems )
 522         libvlc_media_list_retain( p_md->p_subitems );
 523     return p_md->p_subitems;
 524 }
 525
 526 /**************************************************************************
 527  * Getter for statistics information
 528  **************************************************************************/
 529 int libvlc_media_get_stats( libvlc_media_t *p_md,
 530                             libvlc_media_stats_t *p_stats )
 531 {
 532     if( !p_md->p_input_item )
 533         return false;
 534
 535     input_stats_t *p_itm_stats = p_md->p_input_item->p_stats;
 536     vlc_mutex_lock( &p_itm_stats->lock );
 537     p_stats->i_read_bytes = p_itm_stats->i_read_bytes;
 538     p_stats->f_input_bitrate = p_itm_stats->f_input_bitrate;
 539
 540     p_stats->i_demux_read_bytes = p_itm_stats->i_demux_read_bytes;
 541     p_stats->f_demux_bitrate = p_itm_stats->f_demux_bitrate;
 542     p_stats->i_demux_corrupted = p_itm_stats->i_demux_corrupted;
 543     p_stats->i_demux_discontinuity = p_itm_stats->i_demux_discontinuity;
 544
 545     p_stats->i_decoded_video = p_itm_stats->i_decoded_video;
 546     p_stats->i_decoded_audio = p_itm_stats->i_decoded_audio;
 547
 548     p_stats->i_displayed_pictures = p_itm_stats->i_displayed_pictures;
 549     p_stats->i_lost_pictures = p_itm_stats->i_lost_pictures;
 550
 551     p_stats->i_played_abuffers = p_itm_stats->i_played_abuffers;
 552     p_stats->i_lost_abuffers = p_itm_stats->i_lost_abuffers;
 553
 554     p_stats->i_sent_packets = p_itm_stats->i_sent_packets;
 555     p_stats->i_sent_bytes = p_itm_stats->i_sent_bytes;
 556     p_stats->f_send_bitrate = p_itm_stats->f_send_bitrate;
 557     vlc_mutex_unlock( &p_itm_stats->lock );
 558     return true;
 559 }
 560
 561 /**************************************************************************
 562  * event_manager
 563  **************************************************************************/
 564 libvlc_event_manager_t *
 565 libvlc_media_event_manager( libvlc_media_t * p_md )
 566 {
 567     assert( p_md );
 568
 569     return p_md->p_event_manager;
 570 }
 571
 572 /**************************************************************************
 573  * Get duration of media object (in ms)
 574  **************************************************************************/
 575 int64_t
 576 libvlc_media_get_duration( libvlc_media_t * p_md )
 577 {
 578     assert( p_md );
 579
 580     if( !p_md->p_input_item )
 581     {
 582         libvlc_printerr( "No input item" );
 583         return -1;
 584     }
 585
 586     if (!input_item_IsPreparsed( p_md->p_input_item ))
 587         return -1;
 588
 589     return from_mtime(input_item_GetDuration( p_md->p_input_item ));
 590 }
 591
 592 static int media_parse(libvlc_media_t *media)
 593 {
 594     /* TODO: fetcher and parser independent of playlist */
 595     playlist_t *playlist =
 596         libvlc_priv (media->p_libvlc_instance->p_libvlc_int)->p_playlist;
 597
 598     /* TODO: Fetch art on need basis. But how not to break compatibility? */
 599     playlist_AskForArtEnqueue(playlist, media->p_input_item );
 600     return playlist_PreparseEnqueue(playlist, media->p_input_item);
 601 }
 602
 603 /**************************************************************************
 604  * Parse the media and wait.
 605  **************************************************************************/
 606 void
 607 libvlc_media_parse(libvlc_media_t *media)
 608 {
 609     vlc_mutex_lock(&media->parsed_lock);
 610     if (!media->has_asked_preparse)
 611     {
 612         media->has_asked_preparse = true;
 613         vlc_mutex_unlock(&media->parsed_lock);
 614
 615         if (media_parse(media))
 616             /* Parse failed: do not wait! */
 617             return;
 618         vlc_mutex_lock(&media->parsed_lock);
 619     }
 620
 621     while (!media->is_parsed)
 622         vlc_cond_wait(&media->parsed_cond, &media->parsed_lock);
 623     vlc_mutex_unlock(&media->parsed_lock);
 624 }
 625
 626 /**************************************************************************
 627  * Parse the media but do not wait.
 628  **************************************************************************/
 629 void
 630 libvlc_media_parse_async(libvlc_media_t *media)
 631 {
 632     bool needed;
 633
 634     vlc_mutex_lock(&media->parsed_lock);
 635     needed = !media->has_asked_preparse;
 636     media->has_asked_preparse = true;
 637     vlc_mutex_unlock(&media->parsed_lock);
 638
 639     if (needed)
 640         media_parse(media);
 641 }
 642
 643 /**************************************************************************
 644  * Get parsed status for media object.
 645  **************************************************************************/
 646 int
 647 libvlc_media_is_parsed(libvlc_media_t *media)
 648 {
 649     bool parsed;
 650
 651     vlc_mutex_lock(&media->parsed_lock);
 652     parsed = media->is_parsed;
 653     vlc_mutex_unlock(&media->parsed_lock);
 654     return parsed;
 655 }
 656
 657 /**************************************************************************
 658  * Sets media descriptor's user_data. user_data is specialized data
 659  * accessed by the host application, VLC.framework uses it as a pointer to
 660  * an native object that references a libvlc_media_t pointer
 661  **************************************************************************/
 662 void
 663 libvlc_media_set_user_data( libvlc_media_t * p_md, void * p_new_user_data )
 664 {
 665     assert( p_md );
 666     p_md->p_user_data = p_new_user_data;
 667 }
 668
 669 /**************************************************************************
 670  * Get media descriptor's user_data. user_data is specialized data
 671  * accessed by the host application, VLC.framework uses it as a pointer to
 672  * an native object that references a libvlc_media_t pointer
 673  **************************************************************************/
 674 void *
 675 libvlc_media_get_user_data( libvlc_media_t * p_md )
 676 {
 677     assert( p_md );
 678     return p_md->p_user_data;
 679 }
 680
 681 /**************************************************************************
 682  * Get media descriptor's elementary streams description
 683  **************************************************************************/
 684 int
 685 libvlc_media_get_tracks_info( libvlc_media_t *p_md, libvlc_media_track_info_t ** pp_es )
 686 {
 687     assert( p_md );
 688
 689     input_item_t *p_input_item = p_md->p_input_item;
 690     vlc_mutex_lock( &p_input_item->lock );
 691
 692     const int i_es = p_input_item->i_es;
 693     *pp_es = (i_es > 0) ? malloc( i_es * sizeof(libvlc_media_track_info_t) ) : NULL;
 694
 695     if( !*pp_es ) /* no ES, or OOM */
 696     {
 697         vlc_mutex_unlock( &p_input_item->lock );
 698         return 0;
 699     }
 700
 701     /* Fill array */
 702     for( int i = 0; i < i_es; i++ )
 703     {
 704         libvlc_media_track_info_t *p_mes = *pp_es+i;
 705         const es_format_t *p_es = p_input_item->es[i];
 706
 707         p_mes->i_codec = p_es->i_codec;
 708         p_mes->i_id = p_es->i_id;
 709
 710         p_mes->i_profile = p_es->i_profile;
 711         p_mes->i_level = p_es->i_level;
 712
 713         switch(p_es->i_cat)
 714         {
 715         case UNKNOWN_ES:
 716         default:
 717             p_mes->i_type = libvlc_track_unknown;
 718             break;
 719         case VIDEO_ES:
 720             p_mes->i_type = libvlc_track_video;
 721             p_mes->u.video.i_height = p_es->video.i_height;
 722             p_mes->u.video.i_width = p_es->video.i_width;
 723             break;
 724         case AUDIO_ES:
 725             p_mes->i_type = libvlc_track_audio;
 726             p_mes->u.audio.i_channels = p_es->audio.i_channels;
 727             p_mes->u.audio.i_rate = p_es->audio.i_rate;
 728             break;
 729         case SPU_ES:
 730             p_mes->i_type = libvlc_track_text;
 731             break;
 732         }
 733     }
 734
 735     vlc_mutex_unlock( &p_input_item->lock );
 736     return i_es;
 737 }