git.sesse.net Git - vlc/blob - 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
  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_subitemtree_added (Private) (vlc event Callback)
 124  **************************************************************************/
 125 static void input_item_subitemtree_added( const vlc_event_t * p_event,
 126                                           void * user_data )
 127 {
 128     VLC_UNUSED( p_event );
 129     libvlc_media_t * p_md = user_data;
 130     libvlc_event_t event;
 131
 132     /* Construct the event */
 133     event.type = libvlc_MediaSubItemTreeAdded;
 134     event.u.media_subitemtree_added.item = p_md;
 135
 136     /* Send the event */
 137     libvlc_event_send( p_md->p_event_manager, &event );
 138 }
 139
 140 /**************************************************************************
 141  * input_item_meta_changed (Private) (vlc event Callback)
 142  **************************************************************************/
 143 static void input_item_meta_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_MediaMetaChanged;
 151     event.u.media_meta_changed.meta_type =
 152         vlc_to_libvlc_meta[p_event->u.input_item_meta_changed.meta_type];
 153
 154     /* Send the event */
 155     libvlc_event_send( p_md->p_event_manager, &event );
 156 }
 157
 158 /**************************************************************************
 159  * input_item_duration_changed (Private) (vlc event Callback)
 160  **************************************************************************/
 161 static void input_item_duration_changed( const vlc_event_t *p_event,
 162                                          void * user_data )
 163 {
 164     libvlc_media_t * p_md = user_data;
 165     libvlc_event_t event;
 166
 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);
 171
 172     /* Send the event */
 173     libvlc_event_send( p_md->p_event_manager, &event );
 174 }
 175
 176 /**************************************************************************
 177  * input_item_preparsed_changed (Private) (vlc event Callback)
 178  **************************************************************************/
 179 static void input_item_preparsed_changed(const vlc_event_t *p_event,
 180                                          void * user_data)
 181 {
 182     libvlc_media_t *media = user_data;
 183     libvlc_event_t event;
 184
 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);
 190
 191
 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;
 196
 197     /* Send the event */
 198     libvlc_event_send(media->p_event_manager, &event);
 199 }
 200
 201 /**************************************************************************
 202  * Install event handler (Private)
 203  **************************************************************************/
 204 static void install_input_item_observer( libvlc_media_t *p_md )
 205 {
 206     vlc_event_attach( &p_md->p_input_item->event_manager,
 207                       vlc_InputItemSubItemAdded,
 208                       input_item_subitem_added,
 209                       p_md );
 210     vlc_event_attach( &p_md->p_input_item->event_manager,
 211                       vlc_InputItemMetaChanged,
 212                       input_item_meta_changed,
 213                       p_md );
 214     vlc_event_attach( &p_md->p_input_item->event_manager,
 215                       vlc_InputItemDurationChanged,
 216                       input_item_duration_changed,
 217                       p_md );
 218     vlc_event_attach( &p_md->p_input_item->event_manager,
 219                       vlc_InputItemPreparsedChanged,
 220                       input_item_preparsed_changed,
 221                       p_md );
 222     vlc_event_attach( &p_md->p_input_item->event_manager,
 223                       vlc_InputItemSubItemTreeAdded,
 224                       input_item_subitemtree_added,
 225                       p_md );
 226 }
 227
 228 /**************************************************************************
 229  * Uninstall event handler (Private)
 230  **************************************************************************/
 231 static void uninstall_input_item_observer( libvlc_media_t *p_md )
 232 {
 233     vlc_event_detach( &p_md->p_input_item->event_manager,
 234                       vlc_InputItemSubItemAdded,
 235                       input_item_subitem_added,
 236                       p_md );
 237     vlc_event_detach( &p_md->p_input_item->event_manager,
 238                       vlc_InputItemMetaChanged,
 239                       input_item_meta_changed,
 240                       p_md );
 241     vlc_event_detach( &p_md->p_input_item->event_manager,
 242                       vlc_InputItemDurationChanged,
 243                       input_item_duration_changed,
 244                       p_md );
 245     vlc_event_detach( &p_md->p_input_item->event_manager,
 246                       vlc_InputItemPreparsedChanged,
 247                       input_item_preparsed_changed,
 248                       p_md );
 249     vlc_event_detach( &p_md->p_input_item->event_manager,
 250                       vlc_InputItemSubItemTreeAdded,
 251                       input_item_subitemtree_added,
 252                       p_md );
 253 }
 254
 255 /**************************************************************************
 256  * Create a new media descriptor object from an input_item
 257  * (libvlc internal)
 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 )
 263 {
 264     libvlc_media_t * p_md;
 265
 266     if (!p_input_item)
 267     {
 268         libvlc_printerr( "No input item given" );
 269         return NULL;
 270     }
 271
 272     p_md = calloc( 1, sizeof(libvlc_media_t) );
 273     if( !p_md )
 274     {
 275         libvlc_printerr( "Not enough memory" );
 276         return NULL;
 277     }
 278
 279     p_md->p_libvlc_instance = p_instance;
 280     p_md->p_input_item      = p_input_item;
 281     p_md->i_refcount        = 1;
 282
 283     vlc_cond_init(&p_md->parsed_cond);
 284     vlc_mutex_init(&p_md->parsed_lock);
 285
 286     p_md->state = libvlc_NothingSpecial;
 287
 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;
 291
 292     p_md->p_event_manager = libvlc_event_manager_new( p_md, p_instance );
 293     if( unlikely(p_md->p_event_manager == NULL) )
 294     {
 295         free(p_md);
 296         return NULL;
 297     }
 298
 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);
 307
 308     vlc_gc_incref( p_md->p_input_item );
 309
 310     install_input_item_observer( p_md );
 311
 312     return p_md;
 313 }
 314
 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 )
 320 {
 321     input_item_t * p_input_item;
 322     libvlc_media_t * p_md;
 323
 324     p_input_item = input_item_New( psz_mrl, NULL );
 325
 326     if (!p_input_item)
 327     {
 328         libvlc_printerr( "Not enough memory" );
 329         return NULL;
 330     }
 331
 332     p_md = libvlc_media_new_from_input_item( p_instance, p_input_item );
 333
 334     /* The p_input_item is retained in libvlc_media_new_from_input_item */
 335     vlc_gc_decref( p_input_item );
 336
 337     return p_md;
 338 }
 339
 340 libvlc_media_t *libvlc_media_new_path( libvlc_instance_t *p_instance,
 341                                        const char *path )
 342 {
 343     char *mrl = vlc_path2uri( path, NULL );
 344     if( unlikely(mrl == NULL) )
 345     {
 346         libvlc_printerr( "Not enough memory" );
 347         return NULL;
 348     }
 349
 350     libvlc_media_t *m = libvlc_media_new_location( p_instance, mrl );
 351     free( mrl );
 352     return m;
 353 }
 354
 355 libvlc_media_t *libvlc_media_new_fd( libvlc_instance_t *p_instance, int fd )
 356 {
 357     char mrl[16];
 358     snprintf( mrl, sizeof(mrl), "fd://%d", fd );
 359
 360     return libvlc_media_new_location( p_instance, mrl );
 361 }
 362
 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 )
 368 {
 369     input_item_t * p_input_item;
 370     libvlc_media_t * p_md;
 371
 372     p_input_item = input_item_New( "vlc://nop", psz_name );
 373
 374     if (!p_input_item)
 375     {
 376         libvlc_printerr( "Not enough memory" );
 377         return NULL;
 378     }
 379
 380     p_md = libvlc_media_new_from_input_item( p_instance, p_input_item );
 381
 382     p_md->p_subitems = libvlc_media_list_new( p_md->p_libvlc_instance );
 383
 384     return p_md;
 385 }
 386
 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
 392  *
 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 )
 397 {
 398     libvlc_media_add_option_flag( p_md, psz_option,
 399                           VLC_INPUT_OPTION_UNIQUE|VLC_INPUT_OPTION_TRUSTED );
 400 }
 401
 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,
 407                                    unsigned i_flags )
 408 {
 409     input_item_AddOption( p_md->p_input_item, ppsz_option, i_flags );
 410 }
 411
 412 /**************************************************************************
 413  * Delete a media descriptor object
 414  **************************************************************************/
 415 void libvlc_media_release( libvlc_media_t *p_md )
 416 {
 417     if (!p_md)
 418         return;
 419
 420     p_md->i_refcount--;
 421
 422     if( p_md->i_refcount > 0 )
 423         return;
 424
 425     if( p_md->p_subitems )
 426         libvlc_media_list_release( p_md->p_subitems );
 427
 428     uninstall_input_item_observer( p_md );
 429     vlc_gc_decref( p_md->p_input_item );
 430
 431     vlc_cond_destroy( &p_md->parsed_cond );
 432     vlc_mutex_destroy( &p_md->parsed_lock );
 433
 434     /* Construct the event */
 435     libvlc_event_t event;
 436     event.type = libvlc_MediaFreed;
 437     event.u.media_freed.md = p_md;
 438
 439     /* Send the event */
 440     libvlc_event_send( p_md->p_event_manager, &event );
 441
 442     libvlc_event_manager_release( p_md->p_event_manager );
 443
 444     free( p_md );
 445 }
 446
 447 /**************************************************************************
 448  * Retain a media descriptor object
 449  **************************************************************************/
 450 void libvlc_media_retain( libvlc_media_t *p_md )
 451 {
 452     assert (p_md);
 453     p_md->i_refcount++;
 454 }
 455
 456 /**************************************************************************
 457  * Duplicate a media descriptor object
 458  **************************************************************************/
 459 libvlc_media_t *
 460 libvlc_media_duplicate( libvlc_media_t *p_md_orig )
 461 {
 462     return libvlc_media_new_from_input_item(
 463         p_md_orig->p_libvlc_instance, p_md_orig->p_input_item );
 464 }
 465
 466 /**************************************************************************
 467  * Get mrl from a media descriptor object
 468  **************************************************************************/
 469 char *
 470 libvlc_media_get_mrl( libvlc_media_t * p_md )
 471 {
 472     assert( p_md );
 473     return input_item_GetURI( p_md->p_input_item );
 474 }
 475
 476 /**************************************************************************
 477  * Getter for meta information
 478  **************************************************************************/
 479
 480 char *libvlc_media_get_meta( libvlc_media_t *p_md, libvlc_meta_t e_meta )
 481 {
 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 );
 488
 489     return psz_meta;
 490 }
 491
 492 /**************************************************************************
 493  * Setter for meta information
 494  **************************************************************************/
 495
 496 void libvlc_media_set_meta( libvlc_media_t *p_md, libvlc_meta_t e_meta, const char *psz_value )
 497 {
 498     assert( p_md );
 499     input_item_SetMeta( p_md->p_input_item, libvlc_to_vlc_meta[e_meta], psz_value );
 500 }
 501
 502 int libvlc_media_save_meta( libvlc_media_t *p_md )
 503 {
 504     assert( 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;
 507 }
 508
 509 /**************************************************************************
 510  * Getter for state information
 511  * Can be error, playing, buffering, NothingSpecial.
 512  **************************************************************************/
 513
 514 libvlc_state_t
 515 libvlc_media_get_state( libvlc_media_t *p_md )
 516 {
 517     assert( p_md );
 518     return p_md->state;
 519 }
 520
 521 /**************************************************************************
 522  * Setter for state information (LibVLC Internal)
 523  **************************************************************************/
 524
 525 void
 526 libvlc_media_set_state( libvlc_media_t *p_md,
 527                                    libvlc_state_t state )
 528 {
 529     libvlc_event_t event;
 530
 531     p_md->state = state;
 532
 533     /* Construct the event */
 534     event.type = libvlc_MediaStateChanged;
 535     event.u.media_state_changed.new_state = state;
 536
 537     /* Send the event */
 538     libvlc_event_send( p_md->p_event_manager, &event );
 539 }
 540
 541 /**************************************************************************
 542  * subitems
 543  **************************************************************************/
 544 libvlc_media_list_t *
 545 libvlc_media_subitems( libvlc_media_t * p_md )
 546 {
 547     if( p_md->p_subitems )
 548         libvlc_media_list_retain( p_md->p_subitems );
 549     return p_md->p_subitems;
 550 }
 551
 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 )
 557 {
 558     if( !p_md->p_input_item )
 559         return false;
 560
 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;
 565
 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;
 570
 571     p_stats->i_decoded_video = p_itm_stats->i_decoded_video;
 572     p_stats->i_decoded_audio = p_itm_stats->i_decoded_audio;
 573
 574     p_stats->i_displayed_pictures = p_itm_stats->i_displayed_pictures;
 575     p_stats->i_lost_pictures = p_itm_stats->i_lost_pictures;
 576
 577     p_stats->i_played_abuffers = p_itm_stats->i_played_abuffers;
 578     p_stats->i_lost_abuffers = p_itm_stats->i_lost_abuffers;
 579
 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 );
 584     return true;
 585 }
 586
 587 /**************************************************************************
 588  * event_manager
 589  **************************************************************************/
 590 libvlc_event_manager_t *
 591 libvlc_media_event_manager( libvlc_media_t * p_md )
 592 {
 593     assert( p_md );
 594
 595     return p_md->p_event_manager;
 596 }
 597
 598 /**************************************************************************
 599  * Get duration of media object (in ms)
 600  **************************************************************************/
 601 int64_t
 602 libvlc_media_get_duration( libvlc_media_t * p_md )
 603 {
 604     assert( p_md );
 605
 606     if( !p_md->p_input_item )
 607     {
 608         libvlc_printerr( "No input item" );
 609         return -1;
 610     }
 611
 612     if (!input_item_IsPreparsed( p_md->p_input_item ))
 613         return -1;
 614
 615     return from_mtime(input_item_GetDuration( p_md->p_input_item ));
 616 }
 617
 618 static int media_parse(libvlc_media_t *media)
 619 {
 620     libvlc_int_t *libvlc = media->p_libvlc_instance->p_libvlc_int;
 621     input_item_t *item = media->p_input_item;
 622
 623     /* TODO: Fetch art on need basis. But how not to break compatibility? */
 624     libvlc_ArtRequest(libvlc, item);
 625     return libvlc_MetaRequest(libvlc, item);
 626 }
 627
 628 /**************************************************************************
 629  * Parse the media and wait.
 630  **************************************************************************/
 631 void
 632 libvlc_media_parse(libvlc_media_t *media)
 633 {
 634     vlc_mutex_lock(&media->parsed_lock);
 635     if (!media->has_asked_preparse)
 636     {
 637         media->has_asked_preparse = true;
 638         vlc_mutex_unlock(&media->parsed_lock);
 639
 640         if (media_parse(media))
 641             /* Parse failed: do not wait! */
 642             return;
 643         vlc_mutex_lock(&media->parsed_lock);
 644     }
 645
 646     while (!media->is_parsed)
 647         vlc_cond_wait(&media->parsed_cond, &media->parsed_lock);
 648     vlc_mutex_unlock(&media->parsed_lock);
 649 }
 650
 651 /**************************************************************************
 652  * Parse the media but do not wait.
 653  **************************************************************************/
 654 void
 655 libvlc_media_parse_async(libvlc_media_t *media)
 656 {
 657     bool needed;
 658
 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);
 663
 664     if (needed)
 665         media_parse(media);
 666 }
 667
 668 /**************************************************************************
 669  * Get parsed status for media object.
 670  **************************************************************************/
 671 int
 672 libvlc_media_is_parsed(libvlc_media_t *media)
 673 {
 674     bool parsed;
 675
 676     vlc_mutex_lock(&media->parsed_lock);
 677     parsed = media->is_parsed;
 678     vlc_mutex_unlock(&media->parsed_lock);
 679     return parsed;
 680 }
 681
 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  **************************************************************************/
 687 void
 688 libvlc_media_set_user_data( libvlc_media_t * p_md, void * p_new_user_data )
 689 {
 690     assert( p_md );
 691     p_md->p_user_data = p_new_user_data;
 692 }
 693
 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  **************************************************************************/
 699 void *
 700 libvlc_media_get_user_data( libvlc_media_t * p_md )
 701 {
 702     assert( p_md );
 703     return p_md->p_user_data;
 704 }
 705
 706 /**************************************************************************
 707  * Get media descriptor's elementary streams description
 708  **************************************************************************/
 709 int
 710 libvlc_media_get_tracks_info( libvlc_media_t *p_md, libvlc_media_track_info_t ** pp_es )
 711 {
 712     assert( p_md );
 713
 714     input_item_t *p_input_item = p_md->p_input_item;
 715     vlc_mutex_lock( &p_input_item->lock );
 716
 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;
 719
 720     if( !*pp_es ) /* no ES, or OOM */
 721     {
 722         vlc_mutex_unlock( &p_input_item->lock );
 723         return 0;
 724     }
 725
 726     /* Fill array */
 727     for( int i = 0; i < i_es; i++ )
 728     {
 729         libvlc_media_track_info_t *p_mes = *pp_es+i;
 730         const es_format_t *p_es = p_input_item->es[i];
 731
 732         p_mes->i_codec = p_es->i_codec;
 733         p_mes->i_id = p_es->i_id;
 734
 735         p_mes->i_profile = p_es->i_profile;
 736         p_mes->i_level = p_es->i_level;
 737
 738         switch(p_es->i_cat)
 739         {
 740         case UNKNOWN_ES:
 741         default:
 742             p_mes->i_type = libvlc_track_unknown;
 743             break;
 744         case VIDEO_ES:
 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;
 748             break;
 749         case AUDIO_ES:
 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;
 753             break;
 754         case SPU_ES:
 755             p_mes->i_type = libvlc_track_text;
 756             break;
 757         }
 758     }
 759
 760     vlc_mutex_unlock( &p_input_item->lock );
 761     return i_es;
 762 }
 763
 764 unsigned
 765 libvlc_media_tracks_get( libvlc_media_t *p_md, libvlc_media_track_t *** pp_es )
 766 {
 767     assert( p_md );
 768
 769     input_item_t *p_input_item = p_md->p_input_item;
 770     vlc_mutex_lock( &p_input_item->lock );
 771
 772     const int i_es = p_input_item->i_es;
 773     *pp_es = (i_es > 0) ? calloc( i_es, sizeof(**pp_es) ) : NULL;
 774
 775     if( !*pp_es ) /* no ES, or OOM */
 776     {
 777         vlc_mutex_unlock( &p_input_item->lock );
 778         return 0;
 779     }
 780
 781     /* Fill array */
 782     for( int i = 0; i < i_es; i++ )
 783     {
 784         libvlc_media_track_t *p_mes = calloc( 1, sizeof(*p_mes) );
 785         if ( p_mes )
 786         {
 787             p_mes->audio = malloc( __MAX(__MAX(sizeof(*p_mes->audio),
 788                                                sizeof(*p_mes->video)),
 789                                                sizeof(*p_mes->subtitle)) );
 790         }
 791         if ( !p_mes || !p_mes->audio )
 792         {
 793             libvlc_media_tracks_release( *pp_es, i_es );
 794             *pp_es = NULL;
 795             free( p_mes );
 796             vlc_mutex_unlock( &p_input_item->lock );
 797             return 0;
 798         }
 799         (*pp_es)[i] = p_mes;
 800
 801         const es_format_t *p_es = p_input_item->es[i];
 802
 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;
 806
 807         p_mes->i_profile = p_es->i_profile;
 808         p_mes->i_level = p_es->i_level;
 809
 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;
 813
 814         switch(p_es->i_cat)
 815         {
 816         case UNKNOWN_ES:
 817         default:
 818             p_mes->i_type = libvlc_track_unknown;
 819             break;
 820         case VIDEO_ES:
 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;
 828             break;
 829         case AUDIO_ES:
 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;
 833             break;
 834         case SPU_ES:
 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;
 838             break;
 839         }
 840     }
 841
 842     vlc_mutex_unlock( &p_input_item->lock );
 843     return i_es;
 844 }
 845
 846
 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 )
 851 {
 852     for( unsigned i = 0; i < i_count; ++i )
 853     {
 854         if ( !p_tracks[i] )
 855             continue;
 856         free( p_tracks[i]->psz_language );
 857         free( p_tracks[i]->psz_description );
 858         switch( p_tracks[i]->i_type )
 859         {
 860         case libvlc_track_audio:
 861             break;
 862         case libvlc_track_video:
 863             break;
 864         case libvlc_track_text:
 865             free( p_tracks[i]->subtitle->psz_encoding );
 866             break;
 867         case libvlc_track_unknown:
 868         default:
 869             break;
 870         }
 871         free( p_tracks[i]->audio );
 872         free( p_tracks[i] );
 873     }
 874     free( p_tracks );
 875 }