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     [libvlc_meta_DiscTotal]    = vlc_meta_DiscTotal
  76 };
  77
  78 static const libvlc_meta_t vlc_to_libvlc_meta[] =
  79 {
  80     [vlc_meta_Title]        = libvlc_meta_Title,
  81     [vlc_meta_Artist]       = libvlc_meta_Artist,
  82     [vlc_meta_Genre]        = libvlc_meta_Genre,
  83     [vlc_meta_Copyright]    = libvlc_meta_Copyright,
  84     [vlc_meta_Album]        = libvlc_meta_Album,
  85     [vlc_meta_TrackNumber]  = libvlc_meta_TrackNumber,
  86     [vlc_meta_Description]  = libvlc_meta_Description,
  87     [vlc_meta_Rating]       = libvlc_meta_Rating,
  88     [vlc_meta_Date]         = libvlc_meta_Date,
  89     [vlc_meta_Setting]      = libvlc_meta_Setting,
  90     [vlc_meta_URL]          = libvlc_meta_URL,
  91     [vlc_meta_Language]     = libvlc_meta_Language,
  92     [vlc_meta_NowPlaying]   = libvlc_meta_NowPlaying,
  93     [vlc_meta_ESNowPlaying] = libvlc_meta_NowPlaying,
  94     [vlc_meta_Publisher]    = libvlc_meta_Publisher,
  95     [vlc_meta_EncodedBy]    = libvlc_meta_EncodedBy,
  96     [vlc_meta_ArtworkURL]   = libvlc_meta_ArtworkURL,
  97     [vlc_meta_TrackID]      = libvlc_meta_TrackID,
  98     [vlc_meta_TrackTotal]   = libvlc_meta_TrackTotal,
  99     [vlc_meta_Director]     = libvlc_meta_Director,
 100     [vlc_meta_Season]       = libvlc_meta_Season,
 101     [vlc_meta_Episode]      = libvlc_meta_Episode,
 102     [vlc_meta_ShowName]     = libvlc_meta_ShowName,
 103     [vlc_meta_Actors]       = libvlc_meta_Actors,
 104     [vlc_meta_AlbumArtist]  = libvlc_meta_AlbumArtist,
 105     [vlc_meta_DiscNumber]   = libvlc_meta_DiscNumber,
 106     [vlc_meta_DiscTotal]    = libvlc_meta_DiscTotal
 107 };
 108
 109 static_assert(
 110     ORIENT_TOP_LEFT     == (int) libvlc_video_orient_top_left &&
 111     ORIENT_TOP_RIGHT    == (int) libvlc_video_orient_top_right &&
 112     ORIENT_BOTTOM_LEFT  == (int) libvlc_video_orient_bottom_left &&
 113     ORIENT_BOTTOM_RIGHT == (int) libvlc_video_orient_bottom_right &&
 114     ORIENT_LEFT_TOP     == (int) libvlc_video_orient_left_top &&
 115     ORIENT_LEFT_BOTTOM  == (int) libvlc_video_orient_left_bottom &&
 116     ORIENT_RIGHT_TOP    == (int) libvlc_video_orient_right_top &&
 117     ORIENT_RIGHT_BOTTOM == (int) libvlc_video_orient_right_bottom,
 118     "Mismatch between libvlc_video_orient_t and video_orientation_t" );
 119
 120 static_assert(
 121     PROJECTION_MODE_RECTANGULAR             == (int) libvlc_video_projection_rectangular &&
 122     PROJECTION_MODE_EQUIRECTANGULAR         == (int) libvlc_video_projection_equirectangular &&
 123     PROJECTION_MODE_CUBEMAP_LAYOUT_STANDARD == (int) libvlc_video_projection_cubemap_layout_standard,
 124     "Mismatch between libvlc_video_projection_t and video_projection_mode_t" );
 125
 126 static libvlc_media_list_t *media_get_subitems( libvlc_media_t * p_md,
 127                                                 bool b_create )
 128 {
 129     libvlc_media_list_t *p_subitems = NULL;
 130
 131     vlc_mutex_lock( &p_md->subitems_lock );
 132     if( p_md->p_subitems == NULL && b_create )
 133     {
 134         p_md->p_subitems = libvlc_media_list_new( p_md->p_libvlc_instance );
 135         if( p_md->p_subitems != NULL )
 136         {
 137             p_md->p_subitems->b_read_only = true;
 138             p_md->p_subitems->p_internal_md = p_md;
 139         }
 140     }
 141     p_subitems = p_md->p_subitems;
 142     vlc_mutex_unlock( &p_md->subitems_lock );
 143     return p_subitems;
 144 }
 145
 146 static libvlc_media_t *input_item_add_subitem( libvlc_media_t *p_md,
 147                                                input_item_t *item )
 148 {
 149     libvlc_media_t * p_md_child;
 150     libvlc_media_list_t *p_subitems;
 151     libvlc_event_t event;
 152
 153     p_md_child = libvlc_media_new_from_input_item( p_md->p_libvlc_instance,
 154                                                    item );
 155
 156     /* Add this to our media list */
 157     p_subitems = media_get_subitems( p_md, true );
 158     if( p_subitems != NULL )
 159     {
 160         libvlc_media_list_lock( p_subitems );
 161         libvlc_media_list_internal_add_media( p_subitems, p_md_child );
 162         libvlc_media_list_unlock( p_subitems );
 163     }
 164
 165     /* Construct the event */
 166     event.type = libvlc_MediaSubItemAdded;
 167     event.u.media_subitem_added.new_child = p_md_child;
 168
 169     /* Send the event */
 170     libvlc_event_send( &p_md->event_manager, &event );
 171     return p_md_child;
 172 }
 173
 174 static void input_item_add_subnode( libvlc_media_t *md,
 175                                     input_item_node_t *node )
 176 {
 177     for( int i = 0; i < node->i_children; i++ )
 178     {
 179         input_item_node_t *child = node->pp_children[i];
 180         libvlc_media_t *md_child = input_item_add_subitem( md, child->p_item );
 181
 182         if( md_child != NULL )
 183         {
 184             input_item_add_subnode( md_child, child );
 185             libvlc_media_release( md_child );
 186         }
 187     }
 188 }
 189
 190 /**************************************************************************
 191  * input_item_subitemtree_added (Private) (vlc event Callback)
 192  **************************************************************************/
 193 static void input_item_subitemtree_added( const vlc_event_t * p_event,
 194                                           void * user_data )
 195 {
 196     libvlc_media_t * p_md = user_data;
 197     libvlc_event_t event;
 198     input_item_node_t *node = p_event->u.input_item_subitem_tree_added.p_root;
 199
 200     /* FIXME FIXME FIXME
 201      * Recursive function calls seem much simpler for this. But playlists are
 202      * untrusted and can be arbitrarily deep (e.g. with XSPF). So recursion can
 203      * potentially lead to plain old stack overflow. */
 204     input_item_add_subnode( p_md, node );
 205
 206     /* Construct the event */
 207     event.type = libvlc_MediaSubItemTreeAdded;
 208     event.u.media_subitemtree_added.item = p_md;
 209
 210     /* Send the event */
 211     libvlc_event_send( &p_md->event_manager, &event );
 212 }
 213
 214 /**************************************************************************
 215  * input_item_meta_changed (Private) (vlc event Callback)
 216  **************************************************************************/
 217 static void input_item_meta_changed( const vlc_event_t *p_event,
 218                                      void * user_data )
 219 {
 220     libvlc_media_t * p_md = user_data;
 221     libvlc_event_t event;
 222
 223     /* Construct the event */
 224     event.type = libvlc_MediaMetaChanged;
 225     event.u.media_meta_changed.meta_type =
 226         vlc_to_libvlc_meta[p_event->u.input_item_meta_changed.meta_type];
 227
 228     /* Send the event */
 229     libvlc_event_send( &p_md->event_manager, &event );
 230 }
 231
 232 /**************************************************************************
 233  * input_item_duration_changed (Private) (vlc event Callback)
 234  **************************************************************************/
 235 static void input_item_duration_changed( const vlc_event_t *p_event,
 236                                          void * user_data )
 237 {
 238     libvlc_media_t * p_md = user_data;
 239     libvlc_event_t event;
 240
 241     /* Construct the event */
 242     event.type = libvlc_MediaDurationChanged;
 243     event.u.media_duration_changed.new_duration =
 244         from_mtime(p_event->u.input_item_duration_changed.new_duration);
 245
 246     /* Send the event */
 247     libvlc_event_send( &p_md->event_manager, &event );
 248 }
 249
 250 static void send_parsed_changed( libvlc_media_t *p_md,
 251                                  libvlc_media_parsed_status_t new_status )
 252 {
 253     libvlc_event_t event;
 254
 255     vlc_mutex_lock( &p_md->parsed_lock );
 256     if( p_md->parsed_status == new_status )
 257     {
 258         vlc_mutex_unlock( &p_md->parsed_lock );
 259         return;
 260     }
 261
 262     /* Legacy: notify libvlc_media_parse */
 263     if( !p_md->is_parsed )
 264     {
 265         p_md->is_parsed = true;
 266         vlc_cond_broadcast( &p_md->parsed_cond );
 267     }
 268
 269     p_md->parsed_status = new_status;
 270     if( p_md->parsed_status == libvlc_media_parsed_status_skipped )
 271         p_md->has_asked_preparse = false;
 272
 273     vlc_mutex_unlock( &p_md->parsed_lock );
 274
 275     if( new_status == libvlc_media_parsed_status_done )
 276     {
 277         libvlc_media_list_t *p_subitems = media_get_subitems( p_md, false );
 278         if( p_subitems != NULL )
 279         {
 280             /* notify the media list */
 281             libvlc_media_list_lock( p_subitems );
 282             libvlc_media_list_internal_end_reached( p_subitems );
 283             libvlc_media_list_unlock( p_subitems );
 284         }
 285     }
 286
 287     /* Construct the event */
 288     event.type = libvlc_MediaParsedChanged;
 289     event.u.media_parsed_changed.new_status = new_status;
 290
 291     /* Send the event */
 292     libvlc_event_send( &p_md->event_manager, &event );
 293 }
 294
 295 /**************************************************************************
 296  * input_item_preparse_ended (Private) (vlc event Callback)
 297  **************************************************************************/
 298 static void input_item_preparse_ended( const vlc_event_t * p_event,
 299                                        void * user_data )
 300 {
 301     libvlc_media_t * p_md = user_data;
 302     libvlc_media_parsed_status_t new_status;
 303
 304     switch( p_event->u.input_item_preparse_ended.new_status )
 305     {
 306         case ITEM_PREPARSE_SKIPPED:
 307             new_status = libvlc_media_parsed_status_skipped;
 308             break;
 309         case ITEM_PREPARSE_FAILED:
 310             new_status = libvlc_media_parsed_status_failed;
 311             break;
 312         case ITEM_PREPARSE_TIMEOUT:
 313             new_status = libvlc_media_parsed_status_timeout;
 314             break;
 315         case ITEM_PREPARSE_DONE:
 316             new_status = libvlc_media_parsed_status_done;
 317             break;
 318         default:
 319             return;
 320     }
 321     send_parsed_changed( p_md, new_status );
 322 }
 323
 324 /**************************************************************************
 325  * Install event handler (Private)
 326  **************************************************************************/
 327 static void install_input_item_observer( libvlc_media_t *p_md )
 328 {
 329     vlc_event_attach( &p_md->p_input_item->event_manager,
 330                       vlc_InputItemMetaChanged,
 331                       input_item_meta_changed,
 332                       p_md );
 333     vlc_event_attach( &p_md->p_input_item->event_manager,
 334                       vlc_InputItemDurationChanged,
 335                       input_item_duration_changed,
 336                       p_md );
 337     vlc_event_attach( &p_md->p_input_item->event_manager,
 338                       vlc_InputItemSubItemTreeAdded,
 339                       input_item_subitemtree_added,
 340                       p_md );
 341     vlc_event_attach( &p_md->p_input_item->event_manager,
 342                       vlc_InputItemPreparseEnded,
 343                       input_item_preparse_ended,
 344                       p_md );
 345 }
 346
 347 /**************************************************************************
 348  * Uninstall event handler (Private)
 349  **************************************************************************/
 350 static void uninstall_input_item_observer( libvlc_media_t *p_md )
 351 {
 352     vlc_event_detach( &p_md->p_input_item->event_manager,
 353                       vlc_InputItemMetaChanged,
 354                       input_item_meta_changed,
 355                       p_md );
 356     vlc_event_detach( &p_md->p_input_item->event_manager,
 357                       vlc_InputItemDurationChanged,
 358                       input_item_duration_changed,
 359                       p_md );
 360     vlc_event_detach( &p_md->p_input_item->event_manager,
 361                       vlc_InputItemSubItemTreeAdded,
 362                       input_item_subitemtree_added,
 363                       p_md );
 364     vlc_event_detach( &p_md->p_input_item->event_manager,
 365                       vlc_InputItemPreparseEnded,
 366                       input_item_preparse_ended,
 367                       p_md );
 368 }
 369
 370 /**************************************************************************
 371  * Create a new media descriptor object from an input_item
 372  * (libvlc internal)
 373  * That's the generic constructor
 374  **************************************************************************/
 375 libvlc_media_t * libvlc_media_new_from_input_item(
 376                                    libvlc_instance_t *p_instance,
 377                                    input_item_t *p_input_item )
 378 {
 379     libvlc_media_t * p_md;
 380
 381     if (!p_input_item)
 382     {
 383         libvlc_printerr( "No input item given" );
 384         return NULL;
 385     }
 386
 387     p_md = calloc( 1, sizeof(libvlc_media_t) );
 388     if( !p_md )
 389     {
 390         libvlc_printerr( "Not enough memory" );
 391         return NULL;
 392     }
 393
 394     p_md->p_libvlc_instance = p_instance;
 395     p_md->p_input_item      = p_input_item;
 396     p_md->i_refcount        = 1;
 397
 398     vlc_cond_init(&p_md->parsed_cond);
 399     vlc_mutex_init(&p_md->parsed_lock);
 400     vlc_mutex_init(&p_md->subitems_lock);
 401
 402     p_md->state = libvlc_NothingSpecial;
 403
 404     /* A media descriptor can be a playlist. When you open a playlist
 405      * It can give a bunch of item to read. */
 406     p_md->p_subitems        = NULL;
 407
 408     libvlc_event_manager_init( &p_md->event_manager, p_md );
 409
 410     input_item_Hold( p_md->p_input_item );
 411
 412     install_input_item_observer( p_md );
 413
 414     libvlc_retain( p_instance );
 415     return p_md;
 416 }
 417
 418 /**************************************************************************
 419  * Create a new media descriptor object
 420  **************************************************************************/
 421 libvlc_media_t *libvlc_media_new_location( libvlc_instance_t *p_instance,
 422                                            const char * psz_mrl )
 423 {
 424     input_item_t * p_input_item;
 425     libvlc_media_t * p_md;
 426
 427     p_input_item = input_item_New( psz_mrl, NULL );
 428
 429     if (!p_input_item)
 430     {
 431         libvlc_printerr( "Not enough memory" );
 432         return NULL;
 433     }
 434
 435     p_md = libvlc_media_new_from_input_item( p_instance, p_input_item );
 436
 437     /* The p_input_item is retained in libvlc_media_new_from_input_item */
 438     input_item_Release( p_input_item );
 439
 440     return p_md;
 441 }
 442
 443 libvlc_media_t *libvlc_media_new_path( libvlc_instance_t *p_instance,
 444                                        const char *path )
 445 {
 446     char *mrl = vlc_path2uri( path, NULL );
 447     if( unlikely(mrl == NULL) )
 448     {
 449         libvlc_printerr( "%s", vlc_strerror_c(errno) );
 450         return NULL;
 451     }
 452
 453     libvlc_media_t *m = libvlc_media_new_location( p_instance, mrl );
 454     free( mrl );
 455     return m;
 456 }
 457
 458 libvlc_media_t *libvlc_media_new_fd( libvlc_instance_t *p_instance, int fd )
 459 {
 460     char mrl[16];
 461     snprintf( mrl, sizeof(mrl), "fd://%d", fd );
 462
 463     return libvlc_media_new_location( p_instance, mrl );
 464 }
 465
 466 libvlc_media_t *libvlc_media_new_callbacks(libvlc_instance_t *p_instance,
 467                                            libvlc_media_open_cb open_cb,
 468                                            libvlc_media_read_cb read_cb,
 469                                            libvlc_media_seek_cb seek_cb,
 470                                            libvlc_media_close_cb close_cb,
 471                                            void *opaque)
 472 {
 473     libvlc_media_t *m = libvlc_media_new_location(p_instance, "imem://");
 474     if (unlikely(m == NULL))
 475         return NULL;
 476
 477     assert(read_cb != NULL);
 478     input_item_AddOpaque(m->p_input_item, "imem-data", opaque);
 479     input_item_AddOpaque(m->p_input_item, "imem-open", open_cb);
 480     input_item_AddOpaque(m->p_input_item, "imem-read", read_cb);
 481     input_item_AddOpaque(m->p_input_item, "imem-seek", seek_cb);
 482     input_item_AddOpaque(m->p_input_item, "imem-close", close_cb);
 483     return m;
 484 }
 485
 486 /**************************************************************************
 487  * Create a new media descriptor object
 488  **************************************************************************/
 489 libvlc_media_t * libvlc_media_new_as_node( libvlc_instance_t *p_instance,
 490                                            const char * psz_name )
 491 {
 492     input_item_t * p_input_item;
 493     libvlc_media_t * p_md;
 494     libvlc_media_list_t * p_subitems;
 495
 496     p_input_item = input_item_New( "vlc://nop", psz_name );
 497
 498     if (!p_input_item)
 499     {
 500         libvlc_printerr( "Not enough memory" );
 501         return NULL;
 502     }
 503
 504     p_md = libvlc_media_new_from_input_item( p_instance, p_input_item );
 505     input_item_Release( p_input_item );
 506
 507     p_subitems = media_get_subitems( p_md, true );
 508     if( p_subitems == NULL) {
 509         libvlc_media_release( p_md );
 510         return NULL;
 511     }
 512
 513     return p_md;
 514 }
 515
 516 /**************************************************************************
 517  * Add an option to the media descriptor,
 518  * that will be used to determine how the media_player will read the
 519  * media. This allow to use VLC advanced reading/streaming
 520  * options in a per-media basis
 521  *
 522  * The options are detailled in vlc --long-help, for instance "--sout-all"
 523  **************************************************************************/
 524 void libvlc_media_add_option( libvlc_media_t * p_md,
 525                               const char * psz_option )
 526 {
 527     libvlc_media_add_option_flag( p_md, psz_option,
 528                           VLC_INPUT_OPTION_UNIQUE|VLC_INPUT_OPTION_TRUSTED );
 529 }
 530
 531 /**************************************************************************
 532  * Same as libvlc_media_add_option but with configurable flags.
 533  **************************************************************************/
 534 void libvlc_media_add_option_flag( libvlc_media_t * p_md,
 535                                    const char * ppsz_option,
 536                                    unsigned i_flags )
 537 {
 538     input_item_AddOption( p_md->p_input_item, ppsz_option, i_flags );
 539 }
 540
 541 /**************************************************************************
 542  * Delete a media descriptor object
 543  **************************************************************************/
 544 void libvlc_media_release( libvlc_media_t *p_md )
 545 {
 546     if (!p_md)
 547         return;
 548
 549     p_md->i_refcount--;
 550
 551     if( p_md->i_refcount > 0 )
 552         return;
 553
 554     uninstall_input_item_observer( p_md );
 555
 556     /* Cancel asynchronous parsing (if any) */
 557     libvlc_MetadataCancel( p_md->p_libvlc_instance->p_libvlc_int, p_md );
 558
 559     if( p_md->p_subitems )
 560         libvlc_media_list_release( p_md->p_subitems );
 561
 562     input_item_Release( p_md->p_input_item );
 563
 564     vlc_cond_destroy( &p_md->parsed_cond );
 565     vlc_mutex_destroy( &p_md->parsed_lock );
 566     vlc_mutex_destroy( &p_md->subitems_lock );
 567
 568     /* Construct the event */
 569     libvlc_event_t event;
 570     event.type = libvlc_MediaFreed;
 571     event.u.media_freed.md = p_md;
 572
 573     /* Send the event */
 574     libvlc_event_send( &p_md->event_manager, &event );
 575
 576     libvlc_event_manager_destroy( &p_md->event_manager );
 577     libvlc_release( p_md->p_libvlc_instance );
 578     free( p_md );
 579 }
 580
 581 /**************************************************************************
 582  * Retain a media descriptor object
 583  **************************************************************************/
 584 void libvlc_media_retain( libvlc_media_t *p_md )
 585 {
 586     assert (p_md);
 587     p_md->i_refcount++;
 588 }
 589
 590 /**************************************************************************
 591  * Duplicate a media descriptor object
 592  **************************************************************************/
 593 libvlc_media_t *
 594 libvlc_media_duplicate( libvlc_media_t *p_md_orig )
 595 {
 596     return libvlc_media_new_from_input_item(
 597         p_md_orig->p_libvlc_instance, p_md_orig->p_input_item );
 598 }
 599
 600 /**************************************************************************
 601  * Get mrl from a media descriptor object
 602  **************************************************************************/
 603 char *
 604 libvlc_media_get_mrl( libvlc_media_t * p_md )
 605 {
 606     assert( p_md );
 607     return input_item_GetURI( p_md->p_input_item );
 608 }
 609
 610 /**************************************************************************
 611  * Getter for meta information
 612  **************************************************************************/
 613
 614 char *libvlc_media_get_meta( libvlc_media_t *p_md, libvlc_meta_t e_meta )
 615 {
 616     char *psz_meta = NULL;
 617
 618     if( e_meta == libvlc_meta_NowPlaying )
 619     {
 620         psz_meta = input_item_GetNowPlayingFb( p_md->p_input_item );
 621     }
 622     else
 623     {
 624         psz_meta = input_item_GetMeta( p_md->p_input_item,
 625                                              libvlc_to_vlc_meta[e_meta] );
 626         /* Should be integrated in core */
 627         if( psz_meta == NULL && e_meta == libvlc_meta_Title
 628          && p_md->p_input_item->psz_name != NULL )
 629             psz_meta = strdup( p_md->p_input_item->psz_name );
 630     }
 631     return psz_meta;
 632 }
 633
 634 /**************************************************************************
 635  * Setter for meta information
 636  **************************************************************************/
 637
 638 void libvlc_media_set_meta( libvlc_media_t *p_md, libvlc_meta_t e_meta, const char *psz_value )
 639 {
 640     assert( p_md );
 641     input_item_SetMeta( p_md->p_input_item, libvlc_to_vlc_meta[e_meta], psz_value );
 642 }
 643
 644 int libvlc_media_save_meta( libvlc_media_t *p_md )
 645 {
 646     assert( p_md );
 647     vlc_object_t *p_obj = VLC_OBJECT(p_md->p_libvlc_instance->p_libvlc_int);
 648     return input_item_WriteMeta( p_obj, p_md->p_input_item ) == VLC_SUCCESS;
 649 }
 650
 651 /**************************************************************************
 652  * Getter for state information
 653  * Can be error, playing, buffering, NothingSpecial.
 654  **************************************************************************/
 655
 656 libvlc_state_t
 657 libvlc_media_get_state( libvlc_media_t *p_md )
 658 {
 659     assert( p_md );
 660     return p_md->state;
 661 }
 662
 663 /**************************************************************************
 664  * Setter for state information (LibVLC Internal)
 665  **************************************************************************/
 666
 667 void
 668 libvlc_media_set_state( libvlc_media_t *p_md,
 669                                    libvlc_state_t state )
 670 {
 671     libvlc_event_t event;
 672
 673     p_md->state = state;
 674
 675     /* Construct the event */
 676     event.type = libvlc_MediaStateChanged;
 677     event.u.media_state_changed.new_state = state;
 678
 679     /* Send the event */
 680     libvlc_event_send( &p_md->event_manager, &event );
 681 }
 682
 683 /**************************************************************************
 684  * subitems
 685  **************************************************************************/
 686 libvlc_media_list_t *
 687 libvlc_media_subitems( libvlc_media_t * p_md )
 688 {
 689     libvlc_media_list_t *p_subitems = media_get_subitems( p_md, true );
 690     if( p_subitems )
 691         libvlc_media_list_retain( p_subitems );
 692     return p_subitems;
 693 }
 694
 695 /**************************************************************************
 696  * Getter for statistics information
 697  **************************************************************************/
 698 int libvlc_media_get_stats( libvlc_media_t *p_md,
 699                             libvlc_media_stats_t *p_stats )
 700 {
 701     if( !p_md->p_input_item )
 702         return false;
 703
 704     input_stats_t *p_itm_stats = p_md->p_input_item->p_stats;
 705     vlc_mutex_lock( &p_itm_stats->lock );
 706     p_stats->i_read_bytes = p_itm_stats->i_read_bytes;
 707     p_stats->f_input_bitrate = p_itm_stats->f_input_bitrate;
 708
 709     p_stats->i_demux_read_bytes = p_itm_stats->i_demux_read_bytes;
 710     p_stats->f_demux_bitrate = p_itm_stats->f_demux_bitrate;
 711     p_stats->i_demux_corrupted = p_itm_stats->i_demux_corrupted;
 712     p_stats->i_demux_discontinuity = p_itm_stats->i_demux_discontinuity;
 713
 714     p_stats->i_decoded_video = p_itm_stats->i_decoded_video;
 715     p_stats->i_decoded_audio = p_itm_stats->i_decoded_audio;
 716
 717     p_stats->i_displayed_pictures = p_itm_stats->i_displayed_pictures;
 718     p_stats->i_lost_pictures = p_itm_stats->i_lost_pictures;
 719
 720     p_stats->i_played_abuffers = p_itm_stats->i_played_abuffers;
 721     p_stats->i_lost_abuffers = p_itm_stats->i_lost_abuffers;
 722
 723     p_stats->i_sent_packets = p_itm_stats->i_sent_packets;
 724     p_stats->i_sent_bytes = p_itm_stats->i_sent_bytes;
 725     p_stats->f_send_bitrate = p_itm_stats->f_send_bitrate;
 726     vlc_mutex_unlock( &p_itm_stats->lock );
 727     return true;
 728 }
 729
 730 /**************************************************************************
 731  * event_manager
 732  **************************************************************************/
 733 libvlc_event_manager_t *
 734 libvlc_media_event_manager( libvlc_media_t * p_md )
 735 {
 736     assert( p_md );
 737
 738     return &p_md->event_manager;
 739 }
 740
 741 /**************************************************************************
 742  * Get duration of media object (in ms)
 743  **************************************************************************/
 744 int64_t
 745 libvlc_media_get_duration( libvlc_media_t * p_md )
 746 {
 747     assert( p_md );
 748
 749     if( !p_md->p_input_item )
 750     {
 751         libvlc_printerr( "No input item" );
 752         return -1;
 753     }
 754
 755     if (!input_item_IsPreparsed( p_md->p_input_item ))
 756         return -1;
 757
 758     return from_mtime(input_item_GetDuration( p_md->p_input_item ));
 759 }
 760
 761 static int media_parse(libvlc_media_t *media, bool b_async,
 762                        libvlc_media_parse_flag_t parse_flag, int timeout)
 763 {
 764     bool needed;
 765
 766     vlc_mutex_lock(&media->parsed_lock);
 767     needed = !media->has_asked_preparse;
 768     media->has_asked_preparse = true;
 769     if (needed)
 770         media->is_parsed = false;
 771     vlc_mutex_unlock(&media->parsed_lock);
 772
 773     if (needed)
 774     {
 775         libvlc_int_t *libvlc = media->p_libvlc_instance->p_libvlc_int;
 776         input_item_t *item = media->p_input_item;
 777         input_item_meta_request_option_t parse_scope = META_REQUEST_OPTION_SCOPE_LOCAL;
 778         int ret;
 779
 780         /* Ignore libvlc_media_fetch_local flag since local art will be fetched
 781          * by libvlc_MetadataRequest */
 782         if (parse_flag & libvlc_media_fetch_network)
 783         {
 784             ret = libvlc_ArtRequest(libvlc, item,
 785                                     META_REQUEST_OPTION_SCOPE_NETWORK);
 786             if (ret != VLC_SUCCESS)
 787                 return ret;
 788         }
 789
 790         if (parse_flag & libvlc_media_parse_network)
 791             parse_scope |= META_REQUEST_OPTION_SCOPE_NETWORK;
 792         if (parse_flag & libvlc_media_do_interact)
 793             parse_scope |= META_REQUEST_OPTION_DO_INTERACT;
 794         ret = libvlc_MetadataRequest(libvlc, item, parse_scope, timeout, media);
 795         if (ret != VLC_SUCCESS)
 796             return ret;
 797     }
 798     else
 799         return VLC_EGENERIC;
 800
 801     if (!b_async)
 802     {
 803         vlc_mutex_lock(&media->parsed_lock);
 804         while (!media->is_parsed)
 805             vlc_cond_wait(&media->parsed_cond, &media->parsed_lock);
 806         vlc_mutex_unlock(&media->parsed_lock);
 807     }
 808     return VLC_SUCCESS;
 809 }
 810
 811 /**************************************************************************
 812  * Parse the media and wait.
 813  **************************************************************************/
 814 void
 815 libvlc_media_parse(libvlc_media_t *media)
 816 {
 817     media_parse( media, false, libvlc_media_fetch_local, -1 );
 818 }
 819
 820 /**************************************************************************
 821  * Parse the media but do not wait.
 822  **************************************************************************/
 823 void
 824 libvlc_media_parse_async(libvlc_media_t *media)
 825 {
 826     media_parse( media, true, libvlc_media_fetch_local, -1 );
 827 }
 828
 829 /**************************************************************************
 830  * Parse the media asynchronously with options.
 831  **************************************************************************/
 832 int
 833 libvlc_media_parse_with_options( libvlc_media_t *media,
 834                                  libvlc_media_parse_flag_t parse_flag,
 835                                  int timeout )
 836 {
 837     return media_parse( media, true, parse_flag, timeout ) == VLC_SUCCESS ? 0 : -1;
 838 }
 839
 840 void
 841 libvlc_media_parse_stop( libvlc_media_t *media )
 842 {
 843     libvlc_MetadataCancel( media->p_libvlc_instance->p_libvlc_int, media );
 844 }
 845
 846 /**************************************************************************
 847  * Get parsed status for media object.
 848  **************************************************************************/
 849 int
 850 libvlc_media_is_parsed(libvlc_media_t *media)
 851 {
 852     bool parsed;
 853
 854     vlc_mutex_lock(&media->parsed_lock);
 855     parsed = media->is_parsed;
 856     vlc_mutex_unlock(&media->parsed_lock);
 857     return parsed;
 858 }
 859
 860 libvlc_media_parsed_status_t
 861 libvlc_media_get_parsed_status(libvlc_media_t *media)
 862 {
 863     libvlc_media_parsed_status_t status;
 864
 865     vlc_mutex_lock(&media->parsed_lock);
 866     status = media->parsed_status;
 867     vlc_mutex_unlock(&media->parsed_lock);
 868     return status;
 869 }
 870
 871 /**************************************************************************
 872  * Sets media descriptor's user_data. user_data is specialized data
 873  * accessed by the host application, VLC.framework uses it as a pointer to
 874  * an native object that references a libvlc_media_t pointer
 875  **************************************************************************/
 876 void
 877 libvlc_media_set_user_data( libvlc_media_t * p_md, void * p_new_user_data )
 878 {
 879     assert( p_md );
 880     p_md->p_user_data = p_new_user_data;
 881 }
 882
 883 /**************************************************************************
 884  * Get media descriptor's user_data. user_data is specialized data
 885  * accessed by the host application, VLC.framework uses it as a pointer to
 886  * an native object that references a libvlc_media_t pointer
 887  **************************************************************************/
 888 void *
 889 libvlc_media_get_user_data( libvlc_media_t * p_md )
 890 {
 891     assert( p_md );
 892     return p_md->p_user_data;
 893 }
 894
 895 /**************************************************************************
 896  * Get media descriptor's elementary streams description
 897  **************************************************************************/
 898 int
 899 libvlc_media_get_tracks_info( libvlc_media_t *p_md, libvlc_media_track_info_t ** pp_es )
 900 {
 901     assert( p_md );
 902
 903     input_item_t *p_input_item = p_md->p_input_item;
 904     vlc_mutex_lock( &p_input_item->lock );
 905
 906     const int i_es = p_input_item->i_es;
 907     *pp_es = (i_es > 0) ? vlc_alloc( i_es, sizeof(libvlc_media_track_info_t) ) : NULL;
 908
 909     if( !*pp_es ) /* no ES, or OOM */
 910     {
 911         vlc_mutex_unlock( &p_input_item->lock );
 912         return 0;
 913     }
 914
 915     /* Fill array */
 916     for( int i = 0; i < i_es; i++ )
 917     {
 918         libvlc_media_track_info_t *p_mes = *pp_es+i;
 919         const es_format_t *p_es = p_input_item->es[i];
 920
 921         p_mes->i_codec = p_es->i_codec;
 922         p_mes->i_id = p_es->i_id;
 923
 924         p_mes->i_profile = p_es->i_profile;
 925         p_mes->i_level = p_es->i_level;
 926
 927         switch(p_es->i_cat)
 928         {
 929         case UNKNOWN_ES:
 930         default:
 931             p_mes->i_type = libvlc_track_unknown;
 932             break;
 933         case VIDEO_ES:
 934             p_mes->i_type = libvlc_track_video;
 935             p_mes->u.video.i_height = p_es->video.i_visible_height;
 936             p_mes->u.video.i_width = p_es->video.i_visible_width;
 937             break;
 938         case AUDIO_ES:
 939             p_mes->i_type = libvlc_track_audio;
 940             p_mes->u.audio.i_channels = p_es->audio.i_channels;
 941             p_mes->u.audio.i_rate = p_es->audio.i_rate;
 942             break;
 943         case SPU_ES:
 944             p_mes->i_type = libvlc_track_text;
 945             break;
 946         }
 947     }
 948
 949     vlc_mutex_unlock( &p_input_item->lock );
 950     return i_es;
 951 }
 952
 953 unsigned
 954 libvlc_media_tracks_get( libvlc_media_t *p_md, libvlc_media_track_t *** pp_es )
 955 {
 956     assert( p_md );
 957
 958     input_item_t *p_input_item = p_md->p_input_item;
 959     vlc_mutex_lock( &p_input_item->lock );
 960
 961     const int i_es = p_input_item->i_es;
 962     *pp_es = (i_es > 0) ? calloc( i_es, sizeof(**pp_es) ) : NULL;
 963
 964     if( !*pp_es ) /* no ES, or OOM */
 965     {
 966         vlc_mutex_unlock( &p_input_item->lock );
 967         return 0;
 968     }
 969
 970     /* Fill array */
 971     for( int i = 0; i < i_es; i++ )
 972     {
 973         libvlc_media_track_t *p_mes = calloc( 1, sizeof(*p_mes) );
 974         if ( p_mes )
 975         {
 976             p_mes->audio = malloc( __MAX(__MAX(sizeof(*p_mes->audio),
 977                                                sizeof(*p_mes->video)),
 978                                                sizeof(*p_mes->subtitle)) );
 979         }
 980         if ( !p_mes || !p_mes->audio )
 981         {
 982             libvlc_media_tracks_release( *pp_es, i_es );
 983             *pp_es = NULL;
 984             free( p_mes );
 985             vlc_mutex_unlock( &p_input_item->lock );
 986             return 0;
 987         }
 988         (*pp_es)[i] = p_mes;
 989
 990         const es_format_t *p_es = p_input_item->es[i];
 991
 992         p_mes->i_codec = p_es->i_codec;
 993         p_mes->i_original_fourcc = p_es->i_original_fourcc;
 994         p_mes->i_id = p_es->i_id;
 995
 996         p_mes->i_profile = p_es->i_profile;
 997         p_mes->i_level = p_es->i_level;
 998
 999         p_mes->i_bitrate = p_es->i_bitrate;
1000         p_mes->psz_language = p_es->psz_language != NULL ? strdup(p_es->psz_language) : NULL;
1001         p_mes->psz_description = p_es->psz_description != NULL ? strdup(p_es->psz_description) : NULL;
1002
1003         switch(p_es->i_cat)
1004         {
1005         case UNKNOWN_ES:
1006         default:
1007             p_mes->i_type = libvlc_track_unknown;
1008             break;
1009         case VIDEO_ES:
1010             p_mes->i_type = libvlc_track_video;
1011             p_mes->video->i_height = p_es->video.i_visible_height;
1012             p_mes->video->i_width = p_es->video.i_visible_width;
1013             p_mes->video->i_sar_num = p_es->video.i_sar_num;
1014             p_mes->video->i_sar_den = p_es->video.i_sar_den;
1015             p_mes->video->i_frame_rate_num = p_es->video.i_frame_rate;
1016             p_mes->video->i_frame_rate_den = p_es->video.i_frame_rate_base;
1017
1018             assert( p_es->video.orientation >= ORIENT_TOP_LEFT &&
1019                     p_es->video.orientation <= ORIENT_RIGHT_BOTTOM );
1020             p_mes->video->i_orientation = (int) p_es->video.orientation;
1021
1022             assert( ( p_es->video.projection_mode >= PROJECTION_MODE_RECTANGULAR &&
1023                     p_es->video.projection_mode <= PROJECTION_MODE_EQUIRECTANGULAR ) ||
1024                     ( p_es->video.projection_mode == PROJECTION_MODE_CUBEMAP_LAYOUT_STANDARD ) );
1025             p_mes->video->i_projection = (int) p_es->video.projection_mode;
1026
1027             p_mes->video->pose.f_yaw = p_es->video.pose.yaw;
1028             p_mes->video->pose.f_pitch = p_es->video.pose.pitch;
1029             p_mes->video->pose.f_roll = p_es->video.pose.roll;
1030             p_mes->video->pose.f_field_of_view = p_es->video.pose.fov;
1031             break;
1032         case AUDIO_ES:
1033             p_mes->i_type = libvlc_track_audio;
1034             p_mes->audio->i_channels = p_es->audio.i_channels;
1035             p_mes->audio->i_rate = p_es->audio.i_rate;
1036             break;
1037         case SPU_ES:
1038             p_mes->i_type = libvlc_track_text;
1039             p_mes->subtitle->psz_encoding = p_es->subs.psz_encoding != NULL ?
1040                                             strdup(p_es->subs.psz_encoding) : NULL;
1041             break;
1042         }
1043     }
1044
1045     vlc_mutex_unlock( &p_input_item->lock );
1046     return i_es;
1047 }
1048
1049 /**************************************************************************
1050  * Get codec description from media elementary stream
1051  **************************************************************************/
1052 const char *
1053 libvlc_media_get_codec_description( libvlc_track_type_t i_type,
1054                                     uint32_t i_codec )
1055 {
1056     switch( i_type )
1057     {
1058         case libvlc_track_audio:
1059             return vlc_fourcc_GetDescription( AUDIO_ES, i_codec );
1060         case libvlc_track_video:
1061             return vlc_fourcc_GetDescription( VIDEO_ES, i_codec );
1062         case libvlc_track_text:
1063             return vlc_fourcc_GetDescription( SPU_ES, i_codec );
1064         case libvlc_track_unknown:
1065         default:
1066             return vlc_fourcc_GetDescription( UNKNOWN_ES, i_codec );
1067     }
1068 }
1069
1070 /**************************************************************************
1071  * Release media descriptor's elementary streams description array
1072  **************************************************************************/
1073 void libvlc_media_tracks_release( libvlc_media_track_t **p_tracks, unsigned i_count )
1074 {
1075     for( unsigned i = 0; i < i_count; ++i )
1076     {
1077         if ( !p_tracks[i] )
1078             continue;
1079         free( p_tracks[i]->psz_language );
1080         free( p_tracks[i]->psz_description );
1081         switch( p_tracks[i]->i_type )
1082         {
1083         case libvlc_track_audio:
1084             break;
1085         case libvlc_track_video:
1086             break;
1087         case libvlc_track_text:
1088             free( p_tracks[i]->subtitle->psz_encoding );
1089             break;
1090         case libvlc_track_unknown:
1091         default:
1092             break;
1093         }
1094         free( p_tracks[i]->audio );
1095         free( p_tracks[i] );
1096     }
1097     free( p_tracks );
1098 }
1099
1100 /**************************************************************************
1101  * Get the media type of the media descriptor object
1102  **************************************************************************/
1103 libvlc_media_type_t libvlc_media_get_type( libvlc_media_t *p_md )
1104 {
1105     assert( p_md );
1106
1107     int i_type;
1108     input_item_t *p_input_item = p_md->p_input_item;
1109
1110     vlc_mutex_lock( &p_input_item->lock );
1111     i_type = p_md->p_input_item->i_type;
1112     vlc_mutex_unlock( &p_input_item->lock );
1113
1114     switch( i_type )
1115     {
1116     case ITEM_TYPE_FILE:
1117         return libvlc_media_type_file;
1118     case ITEM_TYPE_NODE:
1119     case ITEM_TYPE_DIRECTORY:
1120         return libvlc_media_type_directory;
1121     case ITEM_TYPE_DISC:
1122         return libvlc_media_type_disc;
1123     case ITEM_TYPE_STREAM:
1124         return libvlc_media_type_stream;
1125     case ITEM_TYPE_PLAYLIST:
1126         return libvlc_media_type_playlist;
1127     default:
1128         return libvlc_media_type_unknown;
1129     }
1130 }
1131
1132 int libvlc_media_slaves_add( libvlc_media_t *p_md,
1133                              libvlc_media_slave_type_t i_type,
1134                              unsigned int i_priority,
1135                              const char *psz_uri )
1136 {
1137     assert( p_md && psz_uri );
1138     input_item_t *p_input_item = p_md->p_input_item;
1139
1140     enum slave_type i_input_slave_type;
1141     switch( i_type )
1142     {
1143     case libvlc_media_slave_type_subtitle:
1144         i_input_slave_type = SLAVE_TYPE_SPU;
1145         break;
1146     case libvlc_media_slave_type_audio:
1147         i_input_slave_type = SLAVE_TYPE_AUDIO;
1148         break;
1149     default:
1150         vlc_assert_unreachable();
1151         return -1;
1152     }
1153
1154     enum slave_priority i_input_slave_priority;
1155     switch( i_priority )
1156     {
1157     case 0:
1158         i_input_slave_priority = SLAVE_PRIORITY_MATCH_NONE;
1159         break;
1160     case 1:
1161         i_input_slave_priority = SLAVE_PRIORITY_MATCH_RIGHT;
1162         break;
1163     case 2:
1164         i_input_slave_priority = SLAVE_PRIORITY_MATCH_LEFT;
1165         break;
1166     case 3:
1167         i_input_slave_priority = SLAVE_PRIORITY_MATCH_ALL;
1168         break;
1169     default:
1170     case 4:
1171         i_input_slave_priority = SLAVE_PRIORITY_USER;
1172         break;
1173     }
1174
1175     input_item_slave_t *p_slave = input_item_slave_New( psz_uri,
1176                                                       i_input_slave_type,
1177                                                       i_input_slave_priority );
1178     if( p_slave == NULL )
1179         return -1;
1180     return input_item_AddSlave( p_input_item, p_slave ) == VLC_SUCCESS ? 0 : -1;
1181 }
1182
1183 void libvlc_media_slaves_clear( libvlc_media_t *p_md )
1184 {
1185     assert( p_md );
1186     input_item_t *p_input_item = p_md->p_input_item;
1187
1188     vlc_mutex_lock( &p_input_item->lock );
1189     for( int i = 0; i < p_input_item->i_slaves; i++ )
1190         input_item_slave_Delete( p_input_item->pp_slaves[i] );
1191     TAB_CLEAN( p_input_item->i_slaves, p_input_item->pp_slaves );
1192     vlc_mutex_unlock( &p_input_item->lock );
1193 }
1194
1195 unsigned int libvlc_media_slaves_get( libvlc_media_t *p_md,
1196                                       libvlc_media_slave_t ***ppp_slaves )
1197 {
1198     assert( p_md && ppp_slaves );
1199     input_item_t *p_input_item = p_md->p_input_item;
1200     *ppp_slaves = NULL;
1201
1202     vlc_mutex_lock( &p_input_item->lock );
1203
1204     int i_count = p_input_item->i_slaves;
1205     if( i_count <= 0 )
1206         return vlc_mutex_unlock( &p_input_item->lock ), 0;
1207
1208     libvlc_media_slave_t **pp_slaves = calloc( i_count, sizeof(*pp_slaves) );
1209     if( pp_slaves == NULL )
1210         return vlc_mutex_unlock( &p_input_item->lock ), 0;
1211
1212     for( int i = 0; i < i_count; ++i )
1213     {
1214         input_item_slave_t *p_item_slave = p_input_item->pp_slaves[i];
1215         assert( p_item_slave->i_priority >= SLAVE_PRIORITY_MATCH_NONE );
1216
1217         /* also allocate psz_uri buffer at the end of the struct */
1218         libvlc_media_slave_t *p_slave = malloc( sizeof(*p_slave) +
1219                                                 strlen( p_item_slave->psz_uri )
1220                                                 + 1 );
1221         if( p_slave == NULL )
1222         {
1223             libvlc_media_slaves_release(pp_slaves, i);
1224             return vlc_mutex_unlock( &p_input_item->lock ), 0;
1225         }
1226         p_slave->psz_uri = (char *) ((uint8_t *)p_slave) + sizeof(*p_slave);
1227         strcpy( p_slave->psz_uri, p_item_slave->psz_uri );
1228
1229         switch( p_item_slave->i_type )
1230         {
1231         case SLAVE_TYPE_SPU:
1232             p_slave->i_type = libvlc_media_slave_type_subtitle;
1233             break;
1234         case SLAVE_TYPE_AUDIO:
1235             p_slave->i_type = libvlc_media_slave_type_audio;
1236             break;
1237         default:
1238             vlc_assert_unreachable();
1239         }
1240
1241         switch( p_item_slave->i_priority )
1242         {
1243         case SLAVE_PRIORITY_MATCH_NONE:
1244             p_slave->i_priority = 0;
1245             break;
1246         case SLAVE_PRIORITY_MATCH_RIGHT:
1247             p_slave->i_priority = 1;
1248             break;
1249         case SLAVE_PRIORITY_MATCH_LEFT:
1250             p_slave->i_priority = 2;
1251             break;
1252         case SLAVE_PRIORITY_MATCH_ALL:
1253             p_slave->i_priority = 3;
1254             break;
1255         case SLAVE_PRIORITY_USER:
1256             p_slave->i_priority = 4;
1257             break;
1258         default:
1259             vlc_assert_unreachable();
1260         }
1261         pp_slaves[i] = p_slave;
1262     }
1263     vlc_mutex_unlock( &p_input_item->lock );
1264
1265     *ppp_slaves = pp_slaves;
1266     return i_count;
1267 }
1268
1269 void libvlc_media_slaves_release( libvlc_media_slave_t **pp_slaves,
1270                                   unsigned int i_count )
1271 {
1272     if( i_count > 0 )
1273     {
1274         assert( pp_slaves );
1275         for( unsigned int i = 0; i < i_count; ++i )
1276             free( pp_slaves[i] );
1277     }
1278     free( pp_slaves );
1279 }