git.sesse.net Git - vlc/blob - lib/media.c

   1 /*****************************************************************************
   2  * media.c: Libvlc API media descripor management
   3  *****************************************************************************
   4  * Copyright (C) 2007 VLC authors and VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Pierre d'Herbemont <pdherbemont@videolan.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU Lesser General Public License as published by
  11  * the Free Software Foundation; either version 2.1 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public License
  20  * along with this program; if not, write to the Free Software Foundation,
  21  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 #ifdef HAVE_CONFIG_H
  25 # include "config.h"
  26 #endif
  27
  28 #include <assert.h>
  29 #include <errno.h>
  30
  31 #include <vlc/libvlc.h>
  32 #include <vlc/libvlc_media.h>
  33 #include <vlc/libvlc_media_list.h> // For the subitems, here for convenience
  34 #include <vlc/libvlc_events.h>
  35
  36 #include <vlc_common.h>
  37 #include <vlc_input.h>
  38 #include <vlc_meta.h>
  39 #include <vlc_playlist.h> /* For the preparser */
  40 #include <vlc_url.h>
  41
  42 #include "../src/libvlc.h"
  43
  44 #include "libvlc_internal.h"
  45 #include "media_internal.h"
  46
  47 static const vlc_meta_type_t libvlc_to_vlc_meta[] =
  48 {
  49     [libvlc_meta_Title]        = vlc_meta_Title,
  50     [libvlc_meta_Artist]       = vlc_meta_Artist,
  51     [libvlc_meta_Genre]        = vlc_meta_Genre,
  52     [libvlc_meta_Copyright]    = vlc_meta_Copyright,
  53     [libvlc_meta_Album]        = vlc_meta_Album,
  54     [libvlc_meta_TrackNumber]  = vlc_meta_TrackNumber,
  55     [libvlc_meta_Description]  = vlc_meta_Description,
  56     [libvlc_meta_Rating]       = vlc_meta_Rating,
  57     [libvlc_meta_Date]         = vlc_meta_Date,
  58     [libvlc_meta_Setting]      = vlc_meta_Setting,
  59     [libvlc_meta_URL]          = vlc_meta_URL,
  60     [libvlc_meta_Language]     = vlc_meta_Language,
  61     [libvlc_meta_NowPlaying]   = vlc_meta_NowPlaying,
  62     [libvlc_meta_Publisher]    = vlc_meta_Publisher,
  63     [libvlc_meta_EncodedBy]    = vlc_meta_EncodedBy,
  64     [libvlc_meta_ArtworkURL]   = vlc_meta_ArtworkURL,
  65     [libvlc_meta_TrackID]      = vlc_meta_TrackID,
  66     [libvlc_meta_TrackTotal]   = vlc_meta_TrackTotal,
  67     [libvlc_meta_Director]     = vlc_meta_Director,
  68     [libvlc_meta_Season]       = vlc_meta_Season,
  69     [libvlc_meta_Episode]      = vlc_meta_Episode,
  70     [libvlc_meta_ShowName]     = vlc_meta_ShowName,
  71     [libvlc_meta_Actors]       = vlc_meta_Actors,
  72     [libvlc_meta_AlbumArtist]  = vlc_meta_AlbumArtist,
  73     [libvlc_meta_DiscNumber]   = vlc_meta_DiscNumber
  74 };
  75
  76 static const libvlc_meta_t vlc_to_libvlc_meta[] =
  77 {
  78     [vlc_meta_Title]        = libvlc_meta_Title,
  79     [vlc_meta_Artist]       = libvlc_meta_Artist,
  80     [vlc_meta_Genre]        = libvlc_meta_Genre,
  81     [vlc_meta_Copyright]    = libvlc_meta_Copyright,
  82     [vlc_meta_Album]        = libvlc_meta_Album,
  83     [vlc_meta_TrackNumber]  = libvlc_meta_TrackNumber,
  84     [vlc_meta_Description]  = libvlc_meta_Description,
  85     [vlc_meta_Rating]       = libvlc_meta_Rating,
  86     [vlc_meta_Date]         = libvlc_meta_Date,
  87     [vlc_meta_Setting]      = libvlc_meta_Setting,
  88     [vlc_meta_URL]          = libvlc_meta_URL,
  89     [vlc_meta_Language]     = libvlc_meta_Language,
  90     [vlc_meta_NowPlaying]   = libvlc_meta_NowPlaying,
  91     [vlc_meta_Publisher]    = libvlc_meta_Publisher,
  92     [vlc_meta_EncodedBy]    = libvlc_meta_EncodedBy,
  93     [vlc_meta_ArtworkURL]   = libvlc_meta_ArtworkURL,
  94     [vlc_meta_TrackID]      = libvlc_meta_TrackID,
  95     [vlc_meta_TrackTotal]   = libvlc_meta_TrackTotal,
  96     [vlc_meta_Director]     = libvlc_meta_Director,
  97     [vlc_meta_Season]       = libvlc_meta_Season,
  98     [vlc_meta_Episode]      = libvlc_meta_Episode,
  99     [vlc_meta_ShowName]     = libvlc_meta_ShowName,
 100     [vlc_meta_Actors]       = libvlc_meta_Actors,
 101     [vlc_meta_AlbumArtist]  = libvlc_meta_AlbumArtist,
 102     [vlc_meta_DiscNumber]   = libvlc_meta_DiscNumber
 103 };
 104
 105 /**************************************************************************
 106  * input_item_subitem_added (Private) (vlc event Callback)
 107  **************************************************************************/
 108 static void input_item_subitem_added( const vlc_event_t *p_event,
 109                                        void * user_data )
 110 {
 111     libvlc_media_t * p_md = user_data;
 112     libvlc_media_t * p_md_child;
 113     libvlc_event_t event;
 114
 115     p_md_child = libvlc_media_new_from_input_item(
 116                 p_md->p_libvlc_instance,
 117                 p_event->u.input_item_subitem_added.p_new_child );
 118
 119     /* Add this to our media list */
 120     if( p_md->p_subitems == NULL )
 121     {
 122         p_md->p_subitems = libvlc_media_list_new( p_md->p_libvlc_instance );
 123         if( unlikely(p_md->p_subitems == NULL) )
 124             abort();
 125         libvlc_media_list_set_media( p_md->p_subitems, p_md );
 126     }
 127     libvlc_media_list_add_media( p_md->p_subitems, p_md_child );
 128
 129     /* Construct the event */
 130     event.type = libvlc_MediaSubItemAdded;
 131     event.u.media_subitem_added.new_child = p_md_child;
 132
 133     /* Send the event */
 134     libvlc_event_send( p_md->p_event_manager, &event );
 135     libvlc_media_release( p_md_child );
 136 }
 137
 138 /**************************************************************************
 139  * input_item_subitemtree_added (Private) (vlc event Callback)
 140  **************************************************************************/
 141 static void input_item_subitemtree_added( const vlc_event_t * p_event,
 142                                           void * user_data )
 143 {
 144     VLC_UNUSED( p_event );
 145     libvlc_media_t * p_md = user_data;
 146     libvlc_event_t event;
 147
 148     /* Construct the event */
 149     event.type = libvlc_MediaSubItemTreeAdded;
 150     event.u.media_subitemtree_added.item = p_md;
 151
 152     /* Send the event */
 153     libvlc_event_send( p_md->p_event_manager, &event );
 154 }
 155
 156 /**************************************************************************
 157  * input_item_meta_changed (Private) (vlc event Callback)
 158  **************************************************************************/
 159 static void input_item_meta_changed( const vlc_event_t *p_event,
 160                                      void * user_data )
 161 {
 162     libvlc_media_t * p_md = user_data;
 163     libvlc_event_t event;
 164
 165     /* Construct the event */
 166     event.type = libvlc_MediaMetaChanged;
 167     event.u.media_meta_changed.meta_type =
 168         vlc_to_libvlc_meta[p_event->u.input_item_meta_changed.meta_type];
 169
 170     /* Send the event */
 171     libvlc_event_send( p_md->p_event_manager, &event );
 172 }
 173
 174 /**************************************************************************
 175  * input_item_duration_changed (Private) (vlc event Callback)
 176  **************************************************************************/
 177 static void input_item_duration_changed( const vlc_event_t *p_event,
 178                                          void * user_data )
 179 {
 180     libvlc_media_t * p_md = user_data;
 181     libvlc_event_t event;
 182
 183     /* Construct the event */
 184     event.type = libvlc_MediaDurationChanged;
 185     event.u.media_duration_changed.new_duration =
 186         from_mtime(p_event->u.input_item_duration_changed.new_duration);
 187
 188     /* Send the event */
 189     libvlc_event_send( p_md->p_event_manager, &event );
 190 }
 191
 192 /**************************************************************************
 193  * input_item_preparsed_changed (Private) (vlc event Callback)
 194  **************************************************************************/
 195 static void input_item_preparsed_changed(const vlc_event_t *p_event,
 196                                          void * user_data)
 197 {
 198     libvlc_media_t *media = user_data;
 199     libvlc_event_t event;
 200
 201     /* Eventually notify libvlc_media_parse() */
 202     vlc_mutex_lock(&media->parsed_lock);
 203     media->is_parsed = true;
 204     vlc_cond_broadcast(&media->parsed_cond);
 205     vlc_mutex_unlock(&media->parsed_lock);
 206
 207
 208     /* Construct the event */
 209     event.type = libvlc_MediaParsedChanged;
 210     event.u.media_parsed_changed.new_status =
 211         p_event->u.input_item_preparsed_changed.new_status;
 212
 213     /* Send the event */
 214     libvlc_event_send(media->p_event_manager, &event);
 215 }
 216
 217 /**************************************************************************
 218  * Install event handler (Private)
 219  **************************************************************************/
 220 static void install_input_item_observer( libvlc_media_t *p_md )
 221 {
 222     vlc_event_attach( &p_md->p_input_item->event_manager,
 223                       vlc_InputItemSubItemAdded,
 224                       input_item_subitem_added,
 225                       p_md );
 226     vlc_event_attach( &p_md->p_input_item->event_manager,
 227                       vlc_InputItemMetaChanged,
 228                       input_item_meta_changed,
 229                       p_md );
 230     vlc_event_attach( &p_md->p_input_item->event_manager,
 231                       vlc_InputItemDurationChanged,
 232                       input_item_duration_changed,
 233                       p_md );
 234     vlc_event_attach( &p_md->p_input_item->event_manager,
 235                       vlc_InputItemPreparsedChanged,
 236                       input_item_preparsed_changed,
 237                       p_md );
 238     vlc_event_attach( &p_md->p_input_item->event_manager,
 239                       vlc_InputItemSubItemTreeAdded,
 240                       input_item_subitemtree_added,
 241                       p_md );
 242 }
 243
 244 /**************************************************************************
 245  * Uninstall event handler (Private)
 246  **************************************************************************/
 247 static void uninstall_input_item_observer( libvlc_media_t *p_md )
 248 {
 249     vlc_event_detach( &p_md->p_input_item->event_manager,
 250                       vlc_InputItemSubItemAdded,
 251                       input_item_subitem_added,
 252                       p_md );
 253     vlc_event_detach( &p_md->p_input_item->event_manager,
 254                       vlc_InputItemMetaChanged,
 255                       input_item_meta_changed,
 256                       p_md );
 257     vlc_event_detach( &p_md->p_input_item->event_manager,
 258                       vlc_InputItemDurationChanged,
 259                       input_item_duration_changed,
 260                       p_md );
 261     vlc_event_detach( &p_md->p_input_item->event_manager,
 262                       vlc_InputItemPreparsedChanged,
 263                       input_item_preparsed_changed,
 264                       p_md );
 265     vlc_event_detach( &p_md->p_input_item->event_manager,
 266                       vlc_InputItemSubItemTreeAdded,
 267                       input_item_subitemtree_added,
 268                       p_md );
 269 }
 270
 271 /**************************************************************************
 272  * Create a new media descriptor object from an input_item
 273  * (libvlc internal)
 274  * That's the generic constructor
 275  **************************************************************************/
 276 libvlc_media_t * libvlc_media_new_from_input_item(
 277                                    libvlc_instance_t *p_instance,
 278                                    input_item_t *p_input_item )
 279 {
 280     libvlc_media_t * p_md;
 281
 282     if (!p_input_item)
 283     {
 284         libvlc_printerr( "No input item given" );
 285         return NULL;
 286     }
 287
 288     p_md = calloc( 1, sizeof(libvlc_media_t) );
 289     if( !p_md )
 290     {
 291         libvlc_printerr( "Not enough memory" );
 292         return NULL;
 293     }
 294
 295     p_md->p_libvlc_instance = p_instance;
 296     p_md->p_input_item      = p_input_item;
 297     p_md->i_refcount        = 1;
 298
 299     vlc_cond_init(&p_md->parsed_cond);
 300     vlc_mutex_init(&p_md->parsed_lock);
 301
 302     p_md->state = libvlc_NothingSpecial;
 303
 304     /* A media descriptor can be a playlist. When you open a playlist
 305      * It can give a bunch of item to read. */
 306     p_md->p_subitems        = NULL;
 307
 308     p_md->p_event_manager = libvlc_event_manager_new( p_md, p_instance );
 309     if( unlikely(p_md->p_event_manager == NULL) )
 310     {
 311         free(p_md);
 312         return NULL;
 313     }
 314
 315     libvlc_event_manager_t *em = p_md->p_event_manager;
 316     libvlc_event_manager_register_event_type(em, libvlc_MediaMetaChanged);
 317     libvlc_event_manager_register_event_type(em, libvlc_MediaSubItemAdded);
 318     libvlc_event_manager_register_event_type(em, libvlc_MediaFreed);
 319     libvlc_event_manager_register_event_type(em, libvlc_MediaDurationChanged);
 320     libvlc_event_manager_register_event_type(em, libvlc_MediaStateChanged);
 321     libvlc_event_manager_register_event_type(em, libvlc_MediaParsedChanged);
 322     libvlc_event_manager_register_event_type(em, libvlc_MediaSubItemTreeAdded);
 323
 324     vlc_gc_incref( p_md->p_input_item );
 325
 326     install_input_item_observer( p_md );
 327
 328     return p_md;
 329 }
 330
 331 /**************************************************************************
 332  * Create a new media descriptor object
 333  **************************************************************************/
 334 libvlc_media_t *libvlc_media_new_location( libvlc_instance_t *p_instance,
 335                                            const char * psz_mrl )
 336 {
 337     input_item_t * p_input_item;
 338     libvlc_media_t * p_md;
 339
 340     p_input_item = input_item_New( psz_mrl, NULL );
 341
 342     if (!p_input_item)
 343     {
 344         libvlc_printerr( "Not enough memory" );
 345         return NULL;
 346     }
 347
 348     p_md = libvlc_media_new_from_input_item( p_instance, p_input_item );
 349
 350     /* The p_input_item is retained in libvlc_media_new_from_input_item */
 351     vlc_gc_decref( p_input_item );
 352
 353     return p_md;
 354 }
 355
 356 libvlc_media_t *libvlc_media_new_path( libvlc_instance_t *p_instance,
 357                                        const char *path )
 358 {
 359     char *mrl = vlc_path2uri( path, NULL );
 360     if( unlikely(mrl == NULL) )
 361     {
 362         libvlc_printerr( "%s", vlc_strerror_c(errno) );
 363         return NULL;
 364     }
 365
 366     libvlc_media_t *m = libvlc_media_new_location( p_instance, mrl );
 367     free( mrl );
 368     return m;
 369 }
 370
 371 libvlc_media_t *libvlc_media_new_fd( libvlc_instance_t *p_instance, int fd )
 372 {
 373     char mrl[16];
 374     snprintf( mrl, sizeof(mrl), "fd://%d", fd );
 375
 376     return libvlc_media_new_location( p_instance, mrl );
 377 }
 378
 379 /**************************************************************************
 380  * Create a new media descriptor object
 381  **************************************************************************/
 382 libvlc_media_t * libvlc_media_new_as_node( libvlc_instance_t *p_instance,
 383                                            const char * psz_name )
 384 {
 385     input_item_t * p_input_item;
 386     libvlc_media_t * p_md;
 387
 388     p_input_item = input_item_New( "vlc://nop", psz_name );
 389
 390     if (!p_input_item)
 391     {
 392         libvlc_printerr( "Not enough memory" );
 393         return NULL;
 394     }
 395
 396     p_md = libvlc_media_new_from_input_item( p_instance, p_input_item );
 397
 398     p_md->p_subitems = libvlc_media_list_new( p_md->p_libvlc_instance );
 399
 400     return p_md;
 401 }
 402
 403 /**************************************************************************
 404  * Add an option to the media descriptor,
 405  * that will be used to determine how the media_player will read the
 406  * media. This allow to use VLC advanced reading/streaming
 407  * options in a per-media basis
 408  *
 409  * The options are detailled in vlc --long-help, for instance "--sout-all"
 410  **************************************************************************/
 411 void libvlc_media_add_option( libvlc_media_t * p_md,
 412                               const char * psz_option )
 413 {
 414     libvlc_media_add_option_flag( p_md, psz_option,
 415                           VLC_INPUT_OPTION_UNIQUE|VLC_INPUT_OPTION_TRUSTED );
 416 }
 417
 418 /**************************************************************************
 419  * Same as libvlc_media_add_option but with configurable flags.
 420  **************************************************************************/
 421 void libvlc_media_add_option_flag( libvlc_media_t * p_md,
 422                                    const char * ppsz_option,
 423                                    unsigned i_flags )
 424 {
 425     input_item_AddOption( p_md->p_input_item, ppsz_option, i_flags );
 426 }
 427
 428 /**************************************************************************
 429  * Delete a media descriptor object
 430  **************************************************************************/
 431 void libvlc_media_release( libvlc_media_t *p_md )
 432 {
 433     if (!p_md)
 434         return;
 435
 436     p_md->i_refcount--;
 437
 438     if( p_md->i_refcount > 0 )
 439         return;
 440
 441     if( p_md->p_subitems )
 442         libvlc_media_list_release( p_md->p_subitems );
 443
 444     uninstall_input_item_observer( p_md );
 445     vlc_gc_decref( p_md->p_input_item );
 446
 447     vlc_cond_destroy( &p_md->parsed_cond );
 448     vlc_mutex_destroy( &p_md->parsed_lock );
 449
 450     /* Construct the event */
 451     libvlc_event_t event;
 452     event.type = libvlc_MediaFreed;
 453     event.u.media_freed.md = p_md;
 454
 455     /* Send the event */
 456     libvlc_event_send( p_md->p_event_manager, &event );
 457
 458     libvlc_event_manager_release( p_md->p_event_manager );
 459
 460     free( p_md );
 461 }
 462
 463 /**************************************************************************
 464  * Retain a media descriptor object
 465  **************************************************************************/
 466 void libvlc_media_retain( libvlc_media_t *p_md )
 467 {
 468     assert (p_md);
 469     p_md->i_refcount++;
 470 }
 471
 472 /**************************************************************************
 473  * Duplicate a media descriptor object
 474  **************************************************************************/
 475 libvlc_media_t *
 476 libvlc_media_duplicate( libvlc_media_t *p_md_orig )
 477 {
 478     return libvlc_media_new_from_input_item(
 479         p_md_orig->p_libvlc_instance, p_md_orig->p_input_item );
 480 }
 481
 482 /**************************************************************************
 483  * Get mrl from a media descriptor object
 484  **************************************************************************/
 485 char *
 486 libvlc_media_get_mrl( libvlc_media_t * p_md )
 487 {
 488     assert( p_md );
 489     return input_item_GetURI( p_md->p_input_item );
 490 }
 491
 492 /**************************************************************************
 493  * Getter for meta information
 494  **************************************************************************/
 495
 496 char *libvlc_media_get_meta( libvlc_media_t *p_md, libvlc_meta_t e_meta )
 497 {
 498     char *psz_meta = input_item_GetMeta( p_md->p_input_item,
 499                                          libvlc_to_vlc_meta[e_meta] );
 500     /* Should be integrated in core */
 501     if( psz_meta == NULL && e_meta == libvlc_meta_Title
 502      && p_md->p_input_item->psz_name != NULL )
 503         psz_meta = strdup( p_md->p_input_item->psz_name );
 504
 505     return psz_meta;
 506 }
 507
 508 /**************************************************************************
 509  * Setter for meta information
 510  **************************************************************************/
 511
 512 void libvlc_media_set_meta( libvlc_media_t *p_md, libvlc_meta_t e_meta, const char *psz_value )
 513 {
 514     assert( p_md );
 515     input_item_SetMeta( p_md->p_input_item, libvlc_to_vlc_meta[e_meta], psz_value );
 516 }
 517
 518 int libvlc_media_save_meta( libvlc_media_t *p_md )
 519 {
 520     assert( p_md );
 521     vlc_object_t *p_obj = VLC_OBJECT(p_md->p_libvlc_instance->p_libvlc_int);
 522     return input_item_WriteMeta( p_obj, p_md->p_input_item ) == VLC_SUCCESS;
 523 }
 524
 525 /**************************************************************************
 526  * Getter for state information
 527  * Can be error, playing, buffering, NothingSpecial.
 528  **************************************************************************/
 529
 530 libvlc_state_t
 531 libvlc_media_get_state( libvlc_media_t *p_md )
 532 {
 533     assert( p_md );
 534     return p_md->state;
 535 }
 536
 537 /**************************************************************************
 538  * Setter for state information (LibVLC Internal)
 539  **************************************************************************/
 540
 541 void
 542 libvlc_media_set_state( libvlc_media_t *p_md,
 543                                    libvlc_state_t state )
 544 {
 545     libvlc_event_t event;
 546
 547     p_md->state = state;
 548
 549     /* Construct the event */
 550     event.type = libvlc_MediaStateChanged;
 551     event.u.media_state_changed.new_state = state;
 552
 553     /* Send the event */
 554     libvlc_event_send( p_md->p_event_manager, &event );
 555 }
 556
 557 /**************************************************************************
 558  * subitems
 559  **************************************************************************/
 560 libvlc_media_list_t *
 561 libvlc_media_subitems( libvlc_media_t * p_md )
 562 {
 563     if( p_md->p_subitems )
 564         libvlc_media_list_retain( p_md->p_subitems );
 565     return p_md->p_subitems;
 566 }
 567
 568 /**************************************************************************
 569  * Getter for statistics information
 570  **************************************************************************/
 571 int libvlc_media_get_stats( libvlc_media_t *p_md,
 572                             libvlc_media_stats_t *p_stats )
 573 {
 574     if( !p_md->p_input_item )
 575         return false;
 576
 577     input_stats_t *p_itm_stats = p_md->p_input_item->p_stats;
 578     vlc_mutex_lock( &p_itm_stats->lock );
 579     p_stats->i_read_bytes = p_itm_stats->i_read_bytes;
 580     p_stats->f_input_bitrate = p_itm_stats->f_input_bitrate;
 581
 582     p_stats->i_demux_read_bytes = p_itm_stats->i_demux_read_bytes;
 583     p_stats->f_demux_bitrate = p_itm_stats->f_demux_bitrate;
 584     p_stats->i_demux_corrupted = p_itm_stats->i_demux_corrupted;
 585     p_stats->i_demux_discontinuity = p_itm_stats->i_demux_discontinuity;
 586
 587     p_stats->i_decoded_video = p_itm_stats->i_decoded_video;
 588     p_stats->i_decoded_audio = p_itm_stats->i_decoded_audio;
 589
 590     p_stats->i_displayed_pictures = p_itm_stats->i_displayed_pictures;
 591     p_stats->i_lost_pictures = p_itm_stats->i_lost_pictures;
 592
 593     p_stats->i_played_abuffers = p_itm_stats->i_played_abuffers;
 594     p_stats->i_lost_abuffers = p_itm_stats->i_lost_abuffers;
 595
 596     p_stats->i_sent_packets = p_itm_stats->i_sent_packets;
 597     p_stats->i_sent_bytes = p_itm_stats->i_sent_bytes;
 598     p_stats->f_send_bitrate = p_itm_stats->f_send_bitrate;
 599     vlc_mutex_unlock( &p_itm_stats->lock );
 600     return true;
 601 }
 602
 603 /**************************************************************************
 604  * event_manager
 605  **************************************************************************/
 606 libvlc_event_manager_t *
 607 libvlc_media_event_manager( libvlc_media_t * p_md )
 608 {
 609     assert( p_md );
 610
 611     return p_md->p_event_manager;
 612 }
 613
 614 /**************************************************************************
 615  * Get duration of media object (in ms)
 616  **************************************************************************/
 617 int64_t
 618 libvlc_media_get_duration( libvlc_media_t * p_md )
 619 {
 620     assert( p_md );
 621
 622     if( !p_md->p_input_item )
 623     {
 624         libvlc_printerr( "No input item" );
 625         return -1;
 626     }
 627
 628     if (!input_item_IsPreparsed( p_md->p_input_item ))
 629         return -1;
 630
 631     return from_mtime(input_item_GetDuration( p_md->p_input_item ));
 632 }
 633
 634 static int media_parse(libvlc_media_t *media)
 635 {
 636     libvlc_int_t *libvlc = media->p_libvlc_instance->p_libvlc_int;
 637     input_item_t *item = media->p_input_item;
 638
 639     /* TODO: Fetch art on need basis. But how not to break compatibility? */
 640     libvlc_ArtRequest(libvlc, item, META_REQUEST_OPTION_NONE);
 641     return libvlc_MetaRequest(libvlc, item, META_REQUEST_OPTION_NONE);
 642 }
 643
 644 /**************************************************************************
 645  * Parse the media and wait.
 646  **************************************************************************/
 647 void
 648 libvlc_media_parse(libvlc_media_t *media)
 649 {
 650     vlc_mutex_lock(&media->parsed_lock);
 651     if (!media->has_asked_preparse)
 652     {
 653         media->has_asked_preparse = true;
 654         vlc_mutex_unlock(&media->parsed_lock);
 655
 656         if (media_parse(media))
 657             /* Parse failed: do not wait! */
 658             return;
 659         vlc_mutex_lock(&media->parsed_lock);
 660     }
 661
 662     while (!media->is_parsed)
 663         vlc_cond_wait(&media->parsed_cond, &media->parsed_lock);
 664     vlc_mutex_unlock(&media->parsed_lock);
 665 }
 666
 667 /**************************************************************************
 668  * Parse the media but do not wait.
 669  **************************************************************************/
 670 void
 671 libvlc_media_parse_async(libvlc_media_t *media)
 672 {
 673     bool needed;
 674
 675     vlc_mutex_lock(&media->parsed_lock);
 676     needed = !media->has_asked_preparse;
 677     media->has_asked_preparse = true;
 678     vlc_mutex_unlock(&media->parsed_lock);
 679
 680     if (needed)
 681         media_parse(media);
 682 }
 683
 684 /**************************************************************************
 685  * Get parsed status for media object.
 686  **************************************************************************/
 687 int
 688 libvlc_media_is_parsed(libvlc_media_t *media)
 689 {
 690     bool parsed;
 691
 692     vlc_mutex_lock(&media->parsed_lock);
 693     parsed = media->is_parsed;
 694     vlc_mutex_unlock(&media->parsed_lock);
 695     return parsed;
 696 }
 697
 698 /**************************************************************************
 699  * Sets media descriptor's user_data. user_data is specialized data
 700  * accessed by the host application, VLC.framework uses it as a pointer to
 701  * an native object that references a libvlc_media_t pointer
 702  **************************************************************************/
 703 void
 704 libvlc_media_set_user_data( libvlc_media_t * p_md, void * p_new_user_data )
 705 {
 706     assert( p_md );
 707     p_md->p_user_data = p_new_user_data;
 708 }
 709
 710 /**************************************************************************
 711  * Get media descriptor's user_data. user_data is specialized data
 712  * accessed by the host application, VLC.framework uses it as a pointer to
 713  * an native object that references a libvlc_media_t pointer
 714  **************************************************************************/
 715 void *
 716 libvlc_media_get_user_data( libvlc_media_t * p_md )
 717 {
 718     assert( p_md );
 719     return p_md->p_user_data;
 720 }
 721
 722 /**************************************************************************
 723  * Get media descriptor's elementary streams description
 724  **************************************************************************/
 725 int
 726 libvlc_media_get_tracks_info( libvlc_media_t *p_md, libvlc_media_track_info_t ** pp_es )
 727 {
 728     assert( p_md );
 729
 730     input_item_t *p_input_item = p_md->p_input_item;
 731     vlc_mutex_lock( &p_input_item->lock );
 732
 733     const int i_es = p_input_item->i_es;
 734     *pp_es = (i_es > 0) ? malloc( i_es * sizeof(libvlc_media_track_info_t) ) : NULL;
 735
 736     if( !*pp_es ) /* no ES, or OOM */
 737     {
 738         vlc_mutex_unlock( &p_input_item->lock );
 739         return 0;
 740     }
 741
 742     /* Fill array */
 743     for( int i = 0; i < i_es; i++ )
 744     {
 745         libvlc_media_track_info_t *p_mes = *pp_es+i;
 746         const es_format_t *p_es = p_input_item->es[i];
 747
 748         p_mes->i_codec = p_es->i_codec;
 749         p_mes->i_id = p_es->i_id;
 750
 751         p_mes->i_profile = p_es->i_profile;
 752         p_mes->i_level = p_es->i_level;
 753
 754         switch(p_es->i_cat)
 755         {
 756         case UNKNOWN_ES:
 757         default:
 758             p_mes->i_type = libvlc_track_unknown;
 759             break;
 760         case VIDEO_ES:
 761             p_mes->i_type = libvlc_track_video;
 762             p_mes->u.video.i_height = p_es->video.i_height;
 763             p_mes->u.video.i_width = p_es->video.i_width;
 764             break;
 765         case AUDIO_ES:
 766             p_mes->i_type = libvlc_track_audio;
 767             p_mes->u.audio.i_channels = p_es->audio.i_channels;
 768             p_mes->u.audio.i_rate = p_es->audio.i_rate;
 769             break;
 770         case SPU_ES:
 771             p_mes->i_type = libvlc_track_text;
 772             break;
 773         }
 774     }
 775
 776     vlc_mutex_unlock( &p_input_item->lock );
 777     return i_es;
 778 }
 779
 780 unsigned
 781 libvlc_media_tracks_get( libvlc_media_t *p_md, libvlc_media_track_t *** pp_es )
 782 {
 783     assert( p_md );
 784
 785     input_item_t *p_input_item = p_md->p_input_item;
 786     vlc_mutex_lock( &p_input_item->lock );
 787
 788     const int i_es = p_input_item->i_es;
 789     *pp_es = (i_es > 0) ? calloc( i_es, sizeof(**pp_es) ) : NULL;
 790
 791     if( !*pp_es ) /* no ES, or OOM */
 792     {
 793         vlc_mutex_unlock( &p_input_item->lock );
 794         return 0;
 795     }
 796
 797     /* Fill array */
 798     for( int i = 0; i < i_es; i++ )
 799     {
 800         libvlc_media_track_t *p_mes = calloc( 1, sizeof(*p_mes) );
 801         if ( p_mes )
 802         {
 803             p_mes->audio = malloc( __MAX(__MAX(sizeof(*p_mes->audio),
 804                                                sizeof(*p_mes->video)),
 805                                                sizeof(*p_mes->subtitle)) );
 806         }
 807         if ( !p_mes || !p_mes->audio )
 808         {
 809             libvlc_media_tracks_release( *pp_es, i_es );
 810             *pp_es = NULL;
 811             free( p_mes );
 812             vlc_mutex_unlock( &p_input_item->lock );
 813             return 0;
 814         }
 815         (*pp_es)[i] = p_mes;
 816
 817         const es_format_t *p_es = p_input_item->es[i];
 818
 819         p_mes->i_codec = p_es->i_codec;
 820         p_mes->i_original_fourcc = p_es->i_original_fourcc;
 821         p_mes->i_id = p_es->i_id;
 822
 823         p_mes->i_profile = p_es->i_profile;
 824         p_mes->i_level = p_es->i_level;
 825
 826         p_mes->i_bitrate = p_es->i_bitrate;
 827         p_mes->psz_language = p_es->psz_language != NULL ? strdup(p_es->psz_language) : NULL;
 828         p_mes->psz_description = p_es->psz_description != NULL ? strdup(p_es->psz_description) : NULL;
 829
 830         switch(p_es->i_cat)
 831         {
 832         case UNKNOWN_ES:
 833         default:
 834             p_mes->i_type = libvlc_track_unknown;
 835             break;
 836         case VIDEO_ES:
 837             p_mes->i_type = libvlc_track_video;
 838             p_mes->video->i_height = p_es->video.i_height;
 839             p_mes->video->i_width = p_es->video.i_width;
 840             p_mes->video->i_sar_num = p_es->video.i_sar_num;
 841             p_mes->video->i_sar_den = p_es->video.i_sar_den;
 842             p_mes->video->i_frame_rate_num = p_es->video.i_frame_rate;
 843             p_mes->video->i_frame_rate_den = p_es->video.i_frame_rate_base;
 844             break;
 845         case AUDIO_ES:
 846             p_mes->i_type = libvlc_track_audio;
 847             p_mes->audio->i_channels = p_es->audio.i_channels;
 848             p_mes->audio->i_rate = p_es->audio.i_rate;
 849             break;
 850         case SPU_ES:
 851             p_mes->i_type = libvlc_track_text;
 852             p_mes->subtitle->psz_encoding = p_es->subs.psz_encoding != NULL ?
 853                                             strdup(p_es->subs.psz_encoding) : NULL;
 854             break;
 855         }
 856     }
 857
 858     vlc_mutex_unlock( &p_input_item->lock );
 859     return i_es;
 860 }
 861
 862
 863 /**************************************************************************
 864  * Release media descriptor's elementary streams description array
 865  **************************************************************************/
 866 void libvlc_media_tracks_release( libvlc_media_track_t **p_tracks, unsigned i_count )
 867 {
 868     for( unsigned i = 0; i < i_count; ++i )
 869     {
 870         if ( !p_tracks[i] )
 871             continue;
 872         free( p_tracks[i]->psz_language );
 873         free( p_tracks[i]->psz_description );
 874         switch( p_tracks[i]->i_type )
 875         {
 876         case libvlc_track_audio:
 877             break;
 878         case libvlc_track_video:
 879             break;
 880         case libvlc_track_text:
 881             free( p_tracks[i]->subtitle->psz_encoding );
 882             break;
 883         case libvlc_track_unknown:
 884         default:
 885             break;
 886         }
 887         free( p_tracks[i]->audio );
 888         free( p_tracks[i] );
 889     }
 890     free( p_tracks );
 891 }