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     input_item_t *item = p_md->p_input_item;
 702
 703     if( !p_md->p_input_item )
 704         return false;
 705
 706     vlc_mutex_lock( &item->lock );
 707
 708     input_stats_t *p_itm_stats = p_md->p_input_item->p_stats;
 709     if( p_itm_stats == NULL )
 710     {
 711         vlc_mutex_unlock( &item->lock );
 712         return false;
 713     }
 714
 715     p_stats->i_read_bytes = p_itm_stats->i_read_bytes;
 716     p_stats->f_input_bitrate = p_itm_stats->f_input_bitrate;
 717
 718     p_stats->i_demux_read_bytes = p_itm_stats->i_demux_read_bytes;
 719     p_stats->f_demux_bitrate = p_itm_stats->f_demux_bitrate;
 720     p_stats->i_demux_corrupted = p_itm_stats->i_demux_corrupted;
 721     p_stats->i_demux_discontinuity = p_itm_stats->i_demux_discontinuity;
 722
 723     p_stats->i_decoded_video = p_itm_stats->i_decoded_video;
 724     p_stats->i_decoded_audio = p_itm_stats->i_decoded_audio;
 725
 726     p_stats->i_displayed_pictures = p_itm_stats->i_displayed_pictures;
 727     p_stats->i_lost_pictures = p_itm_stats->i_lost_pictures;
 728
 729     p_stats->i_played_abuffers = p_itm_stats->i_played_abuffers;
 730     p_stats->i_lost_abuffers = p_itm_stats->i_lost_abuffers;
 731
 732     p_stats->i_sent_packets = 0;
 733     p_stats->i_sent_bytes = 0;
 734     p_stats->f_send_bitrate = 0.;
 735
 736     vlc_mutex_unlock( &item->lock );
 737     return true;
 738 }
 739
 740 /**************************************************************************
 741  * event_manager
 742  **************************************************************************/
 743 libvlc_event_manager_t *
 744 libvlc_media_event_manager( libvlc_media_t * p_md )
 745 {
 746     assert( p_md );
 747
 748     return &p_md->event_manager;
 749 }
 750
 751 /**************************************************************************
 752  * Get duration of media object (in ms)
 753  **************************************************************************/
 754 int64_t
 755 libvlc_media_get_duration( libvlc_media_t * p_md )
 756 {
 757     assert( p_md );
 758
 759     if( !p_md->p_input_item )
 760     {
 761         libvlc_printerr( "No input item" );
 762         return -1;
 763     }
 764
 765     if (!input_item_IsPreparsed( p_md->p_input_item ))
 766         return -1;
 767
 768     return from_mtime(input_item_GetDuration( p_md->p_input_item ));
 769 }
 770
 771 static int media_parse(libvlc_media_t *media, bool b_async,
 772                        libvlc_media_parse_flag_t parse_flag, int timeout)
 773 {
 774     bool needed;
 775
 776     vlc_mutex_lock(&media->parsed_lock);
 777     needed = !media->has_asked_preparse;
 778     media->has_asked_preparse = true;
 779     if (needed)
 780         media->is_parsed = false;
 781     vlc_mutex_unlock(&media->parsed_lock);
 782
 783     if (needed)
 784     {
 785         libvlc_int_t *libvlc = media->p_libvlc_instance->p_libvlc_int;
 786         input_item_t *item = media->p_input_item;
 787         input_item_meta_request_option_t parse_scope = META_REQUEST_OPTION_SCOPE_LOCAL;
 788         int ret;
 789
 790         /* Ignore libvlc_media_fetch_local flag since local art will be fetched
 791          * by libvlc_MetadataRequest */
 792         if (parse_flag & libvlc_media_fetch_network)
 793         {
 794             ret = libvlc_ArtRequest(libvlc, item,
 795                                     META_REQUEST_OPTION_SCOPE_NETWORK);
 796             if (ret != VLC_SUCCESS)
 797                 return ret;
 798         }
 799
 800         if (parse_flag & libvlc_media_parse_network)
 801             parse_scope |= META_REQUEST_OPTION_SCOPE_NETWORK;
 802         if (parse_flag & libvlc_media_do_interact)
 803             parse_scope |= META_REQUEST_OPTION_DO_INTERACT;
 804         ret = libvlc_MetadataRequest(libvlc, item, parse_scope, timeout, media);
 805         if (ret != VLC_SUCCESS)
 806             return ret;
 807     }
 808     else
 809         return VLC_EGENERIC;
 810
 811     if (!b_async)
 812     {
 813         vlc_mutex_lock(&media->parsed_lock);
 814         while (!media->is_parsed)
 815             vlc_cond_wait(&media->parsed_cond, &media->parsed_lock);
 816         vlc_mutex_unlock(&media->parsed_lock);
 817     }
 818     return VLC_SUCCESS;
 819 }
 820
 821 /**************************************************************************
 822  * Parse the media and wait.
 823  **************************************************************************/
 824 void
 825 libvlc_media_parse(libvlc_media_t *media)
 826 {
 827     media_parse( media, false, libvlc_media_fetch_local, -1 );
 828 }
 829
 830 /**************************************************************************
 831  * Parse the media but do not wait.
 832  **************************************************************************/
 833 void
 834 libvlc_media_parse_async(libvlc_media_t *media)
 835 {
 836     media_parse( media, true, libvlc_media_fetch_local, -1 );
 837 }
 838
 839 /**************************************************************************
 840  * Parse the media asynchronously with options.
 841  **************************************************************************/
 842 int
 843 libvlc_media_parse_with_options( libvlc_media_t *media,
 844                                  libvlc_media_parse_flag_t parse_flag,
 845                                  int timeout )
 846 {
 847     return media_parse( media, true, parse_flag, timeout ) == VLC_SUCCESS ? 0 : -1;
 848 }
 849
 850 void
 851 libvlc_media_parse_stop( libvlc_media_t *media )
 852 {
 853     libvlc_MetadataCancel( media->p_libvlc_instance->p_libvlc_int, media );
 854 }
 855
 856 /**************************************************************************
 857  * Get parsed status for media object.
 858  **************************************************************************/
 859 int
 860 libvlc_media_is_parsed(libvlc_media_t *media)
 861 {
 862     bool parsed;
 863
 864     vlc_mutex_lock(&media->parsed_lock);
 865     parsed = media->is_parsed;
 866     vlc_mutex_unlock(&media->parsed_lock);
 867     return parsed;
 868 }
 869
 870 libvlc_media_parsed_status_t
 871 libvlc_media_get_parsed_status(libvlc_media_t *media)
 872 {
 873     libvlc_media_parsed_status_t status;
 874
 875     vlc_mutex_lock(&media->parsed_lock);
 876     status = media->parsed_status;
 877     vlc_mutex_unlock(&media->parsed_lock);
 878     return status;
 879 }
 880
 881 /**************************************************************************
 882  * Sets media descriptor's user_data. user_data is specialized data
 883  * accessed by the host application, VLC.framework uses it as a pointer to
 884  * an native object that references a libvlc_media_t pointer
 885  **************************************************************************/
 886 void
 887 libvlc_media_set_user_data( libvlc_media_t * p_md, void * p_new_user_data )
 888 {
 889     assert( p_md );
 890     p_md->p_user_data = p_new_user_data;
 891 }
 892
 893 /**************************************************************************
 894  * Get media descriptor's user_data. user_data is specialized data
 895  * accessed by the host application, VLC.framework uses it as a pointer to
 896  * an native object that references a libvlc_media_t pointer
 897  **************************************************************************/
 898 void *
 899 libvlc_media_get_user_data( libvlc_media_t * p_md )
 900 {
 901     assert( p_md );
 902     return p_md->p_user_data;
 903 }
 904
 905 /**************************************************************************
 906  * Get media descriptor's elementary streams description
 907  **************************************************************************/
 908 int
 909 libvlc_media_get_tracks_info( libvlc_media_t *p_md, libvlc_media_track_info_t ** pp_es )
 910 {
 911     assert( p_md );
 912
 913     input_item_t *p_input_item = p_md->p_input_item;
 914     vlc_mutex_lock( &p_input_item->lock );
 915
 916     const int i_es = p_input_item->i_es;
 917     *pp_es = (i_es > 0) ? vlc_alloc( i_es, sizeof(libvlc_media_track_info_t) ) : NULL;
 918
 919     if( !*pp_es ) /* no ES, or OOM */
 920     {
 921         vlc_mutex_unlock( &p_input_item->lock );
 922         return 0;
 923     }
 924
 925     /* Fill array */
 926     for( int i = 0; i < i_es; i++ )
 927     {
 928         libvlc_media_track_info_t *p_mes = *pp_es+i;
 929         const es_format_t *p_es = p_input_item->es[i];
 930
 931         p_mes->i_codec = p_es->i_codec;
 932         p_mes->i_id = p_es->i_id;
 933
 934         p_mes->i_profile = p_es->i_profile;
 935         p_mes->i_level = p_es->i_level;
 936
 937         switch(p_es->i_cat)
 938         {
 939         case UNKNOWN_ES:
 940         default:
 941             p_mes->i_type = libvlc_track_unknown;
 942             break;
 943         case VIDEO_ES:
 944             p_mes->i_type = libvlc_track_video;
 945             p_mes->u.video.i_height = p_es->video.i_visible_height;
 946             p_mes->u.video.i_width = p_es->video.i_visible_width;
 947             break;
 948         case AUDIO_ES:
 949             p_mes->i_type = libvlc_track_audio;
 950             p_mes->u.audio.i_channels = p_es->audio.i_channels;
 951             p_mes->u.audio.i_rate = p_es->audio.i_rate;
 952             break;
 953         case SPU_ES:
 954             p_mes->i_type = libvlc_track_text;
 955             break;
 956         }
 957     }
 958
 959     vlc_mutex_unlock( &p_input_item->lock );
 960     return i_es;
 961 }
 962
 963 unsigned
 964 libvlc_media_tracks_get( libvlc_media_t *p_md, libvlc_media_track_t *** pp_es )
 965 {
 966     assert( p_md );
 967
 968     input_item_t *p_input_item = p_md->p_input_item;
 969     vlc_mutex_lock( &p_input_item->lock );
 970
 971     const int i_es = p_input_item->i_es;
 972     *pp_es = (i_es > 0) ? calloc( i_es, sizeof(**pp_es) ) : NULL;
 973
 974     if( !*pp_es ) /* no ES, or OOM */
 975     {
 976         vlc_mutex_unlock( &p_input_item->lock );
 977         return 0;
 978     }
 979
 980     /* Fill array */
 981     for( int i = 0; i < i_es; i++ )
 982     {
 983         libvlc_media_track_t *p_mes = calloc( 1, sizeof(*p_mes) );
 984         if ( p_mes )
 985         {
 986             p_mes->audio = malloc( __MAX(__MAX(sizeof(*p_mes->audio),
 987                                                sizeof(*p_mes->video)),
 988                                                sizeof(*p_mes->subtitle)) );
 989         }
 990         if ( !p_mes || !p_mes->audio )
 991         {
 992             libvlc_media_tracks_release( *pp_es, i_es );
 993             *pp_es = NULL;
 994             free( p_mes );
 995             vlc_mutex_unlock( &p_input_item->lock );
 996             return 0;
 997         }
 998         (*pp_es)[i] = p_mes;
 999
1000         const es_format_t *p_es = p_input_item->es[i];
1001
1002         p_mes->i_codec = p_es->i_codec;
1003         p_mes->i_original_fourcc = p_es->i_original_fourcc;
1004         p_mes->i_id = p_es->i_id;
1005
1006         p_mes->i_profile = p_es->i_profile;
1007         p_mes->i_level = p_es->i_level;
1008
1009         p_mes->i_bitrate = p_es->i_bitrate;
1010         p_mes->psz_language = p_es->psz_language != NULL ? strdup(p_es->psz_language) : NULL;
1011         p_mes->psz_description = p_es->psz_description != NULL ? strdup(p_es->psz_description) : NULL;
1012
1013         switch(p_es->i_cat)
1014         {
1015         case UNKNOWN_ES:
1016         default:
1017             p_mes->i_type = libvlc_track_unknown;
1018             break;
1019         case VIDEO_ES:
1020             p_mes->i_type = libvlc_track_video;
1021             p_mes->video->i_height = p_es->video.i_visible_height;
1022             p_mes->video->i_width = p_es->video.i_visible_width;
1023             p_mes->video->i_sar_num = p_es->video.i_sar_num;
1024             p_mes->video->i_sar_den = p_es->video.i_sar_den;
1025             p_mes->video->i_frame_rate_num = p_es->video.i_frame_rate;
1026             p_mes->video->i_frame_rate_den = p_es->video.i_frame_rate_base;
1027
1028             assert( p_es->video.orientation >= ORIENT_TOP_LEFT &&
1029                     p_es->video.orientation <= ORIENT_RIGHT_BOTTOM );
1030             p_mes->video->i_orientation = (int) p_es->video.orientation;
1031
1032             assert( ( p_es->video.projection_mode >= PROJECTION_MODE_RECTANGULAR &&
1033                     p_es->video.projection_mode <= PROJECTION_MODE_EQUIRECTANGULAR ) ||
1034                     ( p_es->video.projection_mode == PROJECTION_MODE_CUBEMAP_LAYOUT_STANDARD ) );
1035             p_mes->video->i_projection = (int) p_es->video.projection_mode;
1036
1037             p_mes->video->pose.f_yaw = p_es->video.pose.yaw;
1038             p_mes->video->pose.f_pitch = p_es->video.pose.pitch;
1039             p_mes->video->pose.f_roll = p_es->video.pose.roll;
1040             p_mes->video->pose.f_field_of_view = p_es->video.pose.fov;
1041             break;
1042         case AUDIO_ES:
1043             p_mes->i_type = libvlc_track_audio;
1044             p_mes->audio->i_channels = p_es->audio.i_channels;
1045             p_mes->audio->i_rate = p_es->audio.i_rate;
1046             break;
1047         case SPU_ES:
1048             p_mes->i_type = libvlc_track_text;
1049             p_mes->subtitle->psz_encoding = p_es->subs.psz_encoding != NULL ?
1050                                             strdup(p_es->subs.psz_encoding) : NULL;
1051             break;
1052         }
1053     }
1054
1055     vlc_mutex_unlock( &p_input_item->lock );
1056     return i_es;
1057 }
1058
1059 /**************************************************************************
1060  * Get codec description from media elementary stream
1061  **************************************************************************/
1062 const char *
1063 libvlc_media_get_codec_description( libvlc_track_type_t i_type,
1064                                     uint32_t i_codec )
1065 {
1066     switch( i_type )
1067     {
1068         case libvlc_track_audio:
1069             return vlc_fourcc_GetDescription( AUDIO_ES, i_codec );
1070         case libvlc_track_video:
1071             return vlc_fourcc_GetDescription( VIDEO_ES, i_codec );
1072         case libvlc_track_text:
1073             return vlc_fourcc_GetDescription( SPU_ES, i_codec );
1074         case libvlc_track_unknown:
1075         default:
1076             return vlc_fourcc_GetDescription( UNKNOWN_ES, i_codec );
1077     }
1078 }
1079
1080 /**************************************************************************
1081  * Release media descriptor's elementary streams description array
1082  **************************************************************************/
1083 void libvlc_media_tracks_release( libvlc_media_track_t **p_tracks, unsigned i_count )
1084 {
1085     for( unsigned i = 0; i < i_count; ++i )
1086     {
1087         if ( !p_tracks[i] )
1088             continue;
1089         free( p_tracks[i]->psz_language );
1090         free( p_tracks[i]->psz_description );
1091         switch( p_tracks[i]->i_type )
1092         {
1093         case libvlc_track_audio:
1094             break;
1095         case libvlc_track_video:
1096             break;
1097         case libvlc_track_text:
1098             free( p_tracks[i]->subtitle->psz_encoding );
1099             break;
1100         case libvlc_track_unknown:
1101         default:
1102             break;
1103         }
1104         free( p_tracks[i]->audio );
1105         free( p_tracks[i] );
1106     }
1107     free( p_tracks );
1108 }
1109
1110 /**************************************************************************
1111  * Get the media type of the media descriptor object
1112  **************************************************************************/
1113 libvlc_media_type_t libvlc_media_get_type( libvlc_media_t *p_md )
1114 {
1115     assert( p_md );
1116
1117     int i_type;
1118     input_item_t *p_input_item = p_md->p_input_item;
1119
1120     vlc_mutex_lock( &p_input_item->lock );
1121     i_type = p_md->p_input_item->i_type;
1122     vlc_mutex_unlock( &p_input_item->lock );
1123
1124     switch( i_type )
1125     {
1126     case ITEM_TYPE_FILE:
1127         return libvlc_media_type_file;
1128     case ITEM_TYPE_NODE:
1129     case ITEM_TYPE_DIRECTORY:
1130         return libvlc_media_type_directory;
1131     case ITEM_TYPE_DISC:
1132         return libvlc_media_type_disc;
1133     case ITEM_TYPE_STREAM:
1134         return libvlc_media_type_stream;
1135     case ITEM_TYPE_PLAYLIST:
1136         return libvlc_media_type_playlist;
1137     default:
1138         return libvlc_media_type_unknown;
1139     }
1140 }
1141
1142 int libvlc_media_slaves_add( libvlc_media_t *p_md,
1143                              libvlc_media_slave_type_t i_type,
1144                              unsigned int i_priority,
1145                              const char *psz_uri )
1146 {
1147     assert( p_md && psz_uri );
1148     input_item_t *p_input_item = p_md->p_input_item;
1149
1150     enum slave_type i_input_slave_type;
1151     switch( i_type )
1152     {
1153     case libvlc_media_slave_type_subtitle:
1154         i_input_slave_type = SLAVE_TYPE_SPU;
1155         break;
1156     case libvlc_media_slave_type_audio:
1157         i_input_slave_type = SLAVE_TYPE_AUDIO;
1158         break;
1159     default:
1160         vlc_assert_unreachable();
1161         return -1;
1162     }
1163
1164     enum slave_priority i_input_slave_priority;
1165     switch( i_priority )
1166     {
1167     case 0:
1168         i_input_slave_priority = SLAVE_PRIORITY_MATCH_NONE;
1169         break;
1170     case 1:
1171         i_input_slave_priority = SLAVE_PRIORITY_MATCH_RIGHT;
1172         break;
1173     case 2:
1174         i_input_slave_priority = SLAVE_PRIORITY_MATCH_LEFT;
1175         break;
1176     case 3:
1177         i_input_slave_priority = SLAVE_PRIORITY_MATCH_ALL;
1178         break;
1179     default:
1180     case 4:
1181         i_input_slave_priority = SLAVE_PRIORITY_USER;
1182         break;
1183     }
1184
1185     input_item_slave_t *p_slave = input_item_slave_New( psz_uri,
1186                                                       i_input_slave_type,
1187                                                       i_input_slave_priority );
1188     if( p_slave == NULL )
1189         return -1;
1190     return input_item_AddSlave( p_input_item, p_slave ) == VLC_SUCCESS ? 0 : -1;
1191 }
1192
1193 void libvlc_media_slaves_clear( libvlc_media_t *p_md )
1194 {
1195     assert( p_md );
1196     input_item_t *p_input_item = p_md->p_input_item;
1197
1198     vlc_mutex_lock( &p_input_item->lock );
1199     for( int i = 0; i < p_input_item->i_slaves; i++ )
1200         input_item_slave_Delete( p_input_item->pp_slaves[i] );
1201     TAB_CLEAN( p_input_item->i_slaves, p_input_item->pp_slaves );
1202     vlc_mutex_unlock( &p_input_item->lock );
1203 }
1204
1205 unsigned int libvlc_media_slaves_get( libvlc_media_t *p_md,
1206                                       libvlc_media_slave_t ***ppp_slaves )
1207 {
1208     assert( p_md && ppp_slaves );
1209     input_item_t *p_input_item = p_md->p_input_item;
1210     *ppp_slaves = NULL;
1211
1212     vlc_mutex_lock( &p_input_item->lock );
1213
1214     int i_count = p_input_item->i_slaves;
1215     if( i_count <= 0 )
1216         return vlc_mutex_unlock( &p_input_item->lock ), 0;
1217
1218     libvlc_media_slave_t **pp_slaves = calloc( i_count, sizeof(*pp_slaves) );
1219     if( pp_slaves == NULL )
1220         return vlc_mutex_unlock( &p_input_item->lock ), 0;
1221
1222     for( int i = 0; i < i_count; ++i )
1223     {
1224         input_item_slave_t *p_item_slave = p_input_item->pp_slaves[i];
1225         assert( p_item_slave->i_priority >= SLAVE_PRIORITY_MATCH_NONE );
1226
1227         /* also allocate psz_uri buffer at the end of the struct */
1228         libvlc_media_slave_t *p_slave = malloc( sizeof(*p_slave) +
1229                                                 strlen( p_item_slave->psz_uri )
1230                                                 + 1 );
1231         if( p_slave == NULL )
1232         {
1233             libvlc_media_slaves_release(pp_slaves, i);
1234             return vlc_mutex_unlock( &p_input_item->lock ), 0;
1235         }
1236         p_slave->psz_uri = (char *) ((uint8_t *)p_slave) + sizeof(*p_slave);
1237         strcpy( p_slave->psz_uri, p_item_slave->psz_uri );
1238
1239         switch( p_item_slave->i_type )
1240         {
1241         case SLAVE_TYPE_SPU:
1242             p_slave->i_type = libvlc_media_slave_type_subtitle;
1243             break;
1244         case SLAVE_TYPE_AUDIO:
1245             p_slave->i_type = libvlc_media_slave_type_audio;
1246             break;
1247         default:
1248             vlc_assert_unreachable();
1249         }
1250
1251         switch( p_item_slave->i_priority )
1252         {
1253         case SLAVE_PRIORITY_MATCH_NONE:
1254             p_slave->i_priority = 0;
1255             break;
1256         case SLAVE_PRIORITY_MATCH_RIGHT:
1257             p_slave->i_priority = 1;
1258             break;
1259         case SLAVE_PRIORITY_MATCH_LEFT:
1260             p_slave->i_priority = 2;
1261             break;
1262         case SLAVE_PRIORITY_MATCH_ALL:
1263             p_slave->i_priority = 3;
1264             break;
1265         case SLAVE_PRIORITY_USER:
1266             p_slave->i_priority = 4;
1267             break;
1268         default:
1269             vlc_assert_unreachable();
1270         }
1271         pp_slaves[i] = p_slave;
1272     }
1273     vlc_mutex_unlock( &p_input_item->lock );
1274
1275     *ppp_slaves = pp_slaves;
1276     return i_count;
1277 }
1278
1279 void libvlc_media_slaves_release( libvlc_media_slave_t **pp_slaves,
1280                                   unsigned int i_count )
1281 {
1282     if( i_count > 0 )
1283     {
1284         assert( pp_slaves );
1285         for( unsigned int i = 0; i < i_count; ++i )
1286             free( pp_slaves[i] );
1287     }
1288     free( pp_slaves );
1289 }