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