]> git.sesse.net Git - vlc/blobdiff - src/control/media_descriptor.c
control/media_descriptor.c: Proper vlc: URL.
[vlc] / src / control / media_descriptor.c
index 72df8c466d55c73200c896b5b19a5a8a24582486..aef2b7ddd99f53f64364ecc637e7b05df9ca180c 100644 (file)
@@ -1,5 +1,5 @@
 /*****************************************************************************
- * media_descriptor.c: Libvlc API media descriport management
+ * media_descriptor.c: Libvlc API media descripor management
  *****************************************************************************
  * Copyright (C) 2007 the VideoLAN team
  * $Id$
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  *****************************************************************************/
 
+#include "libvlc_internal.h"
+
 #include <vlc/libvlc.h>
 #include <vlc_input.h>
 #include <vlc_meta.h>
 
-#include "libvlc_internal.h"
+/* For the preparser */
+#include <vlc_playlist.h>
+
+static const vlc_meta_type_t libvlc_to_vlc_meta[] =
+{
+    [libvlc_meta_Title]        = vlc_meta_Title,
+    [libvlc_meta_Artist]       = vlc_meta_Artist,
+    [libvlc_meta_Genre]        = vlc_meta_Genre,
+    [libvlc_meta_Copyright]    = vlc_meta_Copyright,
+    [libvlc_meta_Album]        = vlc_meta_Album,
+    [libvlc_meta_TrackNumber]  = vlc_meta_TrackNumber,
+    [libvlc_meta_Description]  = vlc_meta_Description,
+    [libvlc_meta_Rating]       = vlc_meta_Rating,
+    [libvlc_meta_Date]         = vlc_meta_Date,
+    [libvlc_meta_Setting]      = vlc_meta_Setting,
+    [libvlc_meta_URL]          = vlc_meta_URL,
+    [libvlc_meta_Language]     = vlc_meta_Language,
+    [libvlc_meta_NowPlaying]   = vlc_meta_NowPlaying,
+    [libvlc_meta_Publisher]    = vlc_meta_Publisher,
+    [libvlc_meta_EncodedBy]    = vlc_meta_EncodedBy,
+    [libvlc_meta_ArtworkURL]   = vlc_meta_ArtworkURL,
+    [libvlc_meta_TrackID]      = vlc_meta_TrackID
+};
+
+static const libvlc_meta_t vlc_to_libvlc_meta[] =
+{
+    [vlc_meta_Title]        = libvlc_meta_Title,
+    [vlc_meta_Artist]       = libvlc_meta_Artist,
+    [vlc_meta_Genre]        = libvlc_meta_Genre,
+    [vlc_meta_Copyright]    = libvlc_meta_Copyright,
+    [vlc_meta_Album]        = libvlc_meta_Album,
+    [vlc_meta_TrackNumber]  = libvlc_meta_TrackNumber,
+    [vlc_meta_Description]  = libvlc_meta_Description,
+    [vlc_meta_Rating]       = libvlc_meta_Rating,
+    [vlc_meta_Date]         = libvlc_meta_Date,
+    [vlc_meta_Setting]      = libvlc_meta_Setting,
+    [vlc_meta_URL]          = libvlc_meta_URL,
+    [vlc_meta_Language]     = libvlc_meta_Language,
+    [vlc_meta_NowPlaying]   = libvlc_meta_NowPlaying,
+    [vlc_meta_Publisher]    = libvlc_meta_Publisher,
+    [vlc_meta_EncodedBy]    = libvlc_meta_EncodedBy,
+    [vlc_meta_ArtworkURL]   = libvlc_meta_ArtworkURL,
+    [vlc_meta_TrackID]      = libvlc_meta_TrackID
+};
+
+/**************************************************************************
+ * input_item_subitem_added (Private) (vlc event Callback)
+ **************************************************************************/
+static void input_item_subitem_added( const vlc_event_t *p_event,
+                                       void * user_data )
+{
+    libvlc_media_descriptor_t * p_md = user_data;
+    libvlc_media_descriptor_t * p_md_child;
+    libvlc_event_t event;
+
+    p_md_child = libvlc_media_descriptor_new_from_input_item(
+                p_md->p_libvlc_instance,
+                p_event->u.input_item_subitem_added.p_new_child, NULL );
+
+    /* Add this to our media list */
+    if( !p_md->p_subitems )
+    {
+        p_md->p_subitems = libvlc_media_list_new( p_md->p_libvlc_instance, NULL );
+        libvlc_media_list_set_media_descriptor( p_md->p_subitems, p_md, NULL );
+    }
+    if( p_md->p_subitems )
+    {
+        libvlc_media_list_add_media_descriptor( p_md->p_subitems, p_md_child, NULL );
+    }
+
+    /* Construct the event */
+    event.type = libvlc_MediaDescriptorSubItemAdded;
+    event.u.media_descriptor_subitem_added.new_child = p_md_child;
+
+    /* Send the event */
+    libvlc_event_send( p_md->p_event_manager, &event );
+    libvlc_media_descriptor_release( p_md_child );
+}
+
+/**************************************************************************
+ * input_item_meta_changed (Private) (vlc event Callback)
+ **************************************************************************/
+static void input_item_meta_changed( const vlc_event_t *p_event,
+                                     void * user_data )
+{
+    libvlc_media_descriptor_t * p_md = user_data;
+    libvlc_event_t event;
+
+    /* Construct the event */
+    event.type = libvlc_MediaDescriptorMetaChanged;
+    event.u.media_descriptor_meta_changed.meta_type =
+        vlc_to_libvlc_meta[p_event->u.input_item_meta_changed.meta_type];
+
+    /* Send the event */
+    libvlc_event_send( p_md->p_event_manager, &event );
+}
+
+/**************************************************************************
+ * input_item_duration_changed (Private) (vlc event Callback)
+ **************************************************************************/
+static void input_item_duration_changed( const vlc_event_t *p_event,
+                                         void * user_data )
+{
+    libvlc_media_descriptor_t * p_md = user_data;
+    libvlc_event_t event;
+
+    /* Construct the event */
+    event.type = libvlc_MediaDescriptorDurationChanged;
+    event.u.media_descriptor_duration_changed.new_duration = 
+        p_event->u.input_item_duration_changed.new_duration;
+
+    /* Send the event */
+    libvlc_event_send( p_md->p_event_manager, &event );
+}
+
+/**************************************************************************
+ * input_item_preparsed_changed (Private) (vlc event Callback)
+ **************************************************************************/
+static void input_item_preparsed_changed( const vlc_event_t *p_event,
+                                          void * user_data )
+{
+    libvlc_media_descriptor_t * p_md = user_data;
+    libvlc_event_t event;
+
+    /* Construct the event */
+    event.type = libvlc_MediaDescriptorPreparsedChanged;
+    event.u.media_descriptor_preparsed_changed.new_status = 
+        p_event->u.input_item_preparsed_changed.new_status;
+
+    /* Send the event */
+    libvlc_event_send( p_md->p_event_manager, &event );
+}
 
+/**************************************************************************
+ * Install event handler (Private)
+ **************************************************************************/
+static void install_input_item_observer( libvlc_media_descriptor_t *p_md )
+{
+    vlc_event_attach( &p_md->p_input_item->event_manager,
+                      vlc_InputItemSubItemAdded,
+                      input_item_subitem_added,
+                      p_md );
+    vlc_event_attach( &p_md->p_input_item->event_manager,
+                      vlc_InputItemMetaChanged,
+                      input_item_meta_changed,
+                      p_md );
+    vlc_event_attach( &p_md->p_input_item->event_manager,
+                      vlc_InputItemDurationChanged,
+                      input_item_duration_changed,
+                      p_md );
+    vlc_event_attach( &p_md->p_input_item->event_manager,
+                      vlc_InputItemPreparsedChanged,
+                      input_item_preparsed_changed,
+                      p_md );
+}
+
+/**************************************************************************
+ * Uninstall event handler (Private)
+ **************************************************************************/
+static void uninstall_input_item_observer( libvlc_media_descriptor_t *p_md )
+{
+    vlc_event_detach( &p_md->p_input_item->event_manager,
+                      vlc_InputItemSubItemAdded,
+                      input_item_subitem_added,
+                      p_md );
+    vlc_event_detach( &p_md->p_input_item->event_manager,
+                      vlc_InputItemMetaChanged,
+                      input_item_meta_changed,
+                      p_md );
+    vlc_event_detach( &p_md->p_input_item->event_manager,
+                      vlc_InputItemDurationChanged,
+                      input_item_duration_changed,
+                      p_md );
+    vlc_event_detach( &p_md->p_input_item->event_manager,
+                      vlc_InputItemPreparsedChanged,
+                      input_item_preparsed_changed,
+                      p_md );
+}
 
 /**************************************************************************
  * Preparse if not already done (Private)
  **************************************************************************/
-static void preparse_if_needed( libvlc_media_descriptor_t *p_media_desc )
+static void preparse_if_needed( libvlc_media_descriptor_t *p_md )
 {
     /* XXX: need some locking here */
-    if (!p_media_desc->b_preparsed)
+    if (!p_md->b_preparsed)
+    {
+        playlist_PreparseEnqueue(
+                p_md->p_libvlc_instance->p_libvlc_int->p_playlist,
+                p_md->p_input_item );
+        p_md->b_preparsed = VLC_TRUE;
+    }
+}
+
+/**************************************************************************
+ * Create a new media descriptor object from an input_item
+ * (libvlc internal)
+ * That's the generic constructor
+ **************************************************************************/
+libvlc_media_descriptor_t * libvlc_media_descriptor_new_from_input_item(
+                                   libvlc_instance_t *p_instance,
+                                   input_item_t *p_input_item,
+                                   libvlc_exception_t *p_e )
+{
+    libvlc_media_descriptor_t * p_md;
+
+    if (!p_input_item)
     {
-        input_Preparse( p_media_desc->p_libvlc_instance->p_libvlc_int,
-                        p_media_desc->p_input_item );
-        p_media_desc->b_preparsed = VLC_TRUE;
+        libvlc_exception_raise( p_e, "No input item given" );
+        return NULL;
     }
+
+    p_md = malloc( sizeof(libvlc_media_descriptor_t) );
+    p_md->p_libvlc_instance = p_instance;
+    p_md->p_input_item      = p_input_item;
+    p_md->b_preparsed       = VLC_FALSE;
+    p_md->i_refcount        = 1;
+    p_md->p_user_data       = NULL;
+
+    p_md->state = libvlc_NothingSpecial;
+
+    /* A media descriptor can be a playlist. When you open a playlist
+     * It can give a bunch of item to read. */
+    p_md->p_subitems        = NULL;
+
+    vlc_dictionary_init( &p_md->tags, 1 );
+
+    p_md->p_event_manager = libvlc_event_manager_new( p_md, p_instance, p_e );
+    libvlc_event_manager_register_event_type( p_md->p_event_manager,
+        libvlc_MediaDescriptorMetaChanged, p_e );
+    libvlc_event_manager_register_event_type( p_md->p_event_manager,
+        libvlc_MediaDescriptorSubItemAdded, p_e );
+    libvlc_event_manager_register_event_type( p_md->p_event_manager,
+        libvlc_MediaDescriptorFreed, p_e );
+    libvlc_event_manager_register_event_type( p_md->p_event_manager,
+        libvlc_MediaDescriptorDurationChanged, p_e );
+    libvlc_event_manager_register_event_type( p_md->p_event_manager,
+        libvlc_MediaDescriptorStateChanged, p_e );
+
+    vlc_gc_incref( p_md->p_input_item );
+
+    install_input_item_observer( p_md );
+
+    return p_md;
 }
 
 /**************************************************************************
@@ -51,9 +282,9 @@ libvlc_media_descriptor_t * libvlc_media_descriptor_new(
                                    libvlc_exception_t *p_e )
 {
     input_item_t * p_input_item;
-    libvlc_media_descriptor_t * p_media_desc;
+    libvlc_media_descriptor_t * p_md;
 
-    p_input_item = input_ItemNew( p_instance->p_libvlc_int, psz_mrl, psz_mrl );
+    p_input_item = input_ItemNew( p_instance->p_libvlc_int, psz_mrl, NULL );
 
     if (!p_input_item)
     {
@@ -61,92 +292,421 @@ libvlc_media_descriptor_t * libvlc_media_descriptor_new(
         return NULL;
     }
 
-    p_media_desc = malloc( sizeof(libvlc_media_descriptor_t) );
-    p_media_desc->p_libvlc_instance = p_instance;
-    p_media_desc->p_input_item      = p_input_item;
-    p_media_desc->b_preparsed       = VLC_FALSE;
+    p_md = libvlc_media_descriptor_new_from_input_item( p_instance,
+                p_input_item, p_e );
 
-    return p_media_desc;
+    /* The p_input_item is retained in libvlc_media_descriptor_new_from_input_item */
+    vlc_gc_decref( p_input_item );
+    
+    return p_md;
 }
 
 /**************************************************************************
- * Create a new media descriptor object from an input_item
- * (libvlc internal)
+ * Create a new media descriptor object
  **************************************************************************/
-libvlc_media_descriptor_t * libvlc_media_descriptor_new_from_input_item(
+libvlc_media_descriptor_t * libvlc_media_descriptor_new_as_node(
                                    libvlc_instance_t *p_instance,
-                                   input_item_t *p_input_item,
+                                   const char * psz_name,
                                    libvlc_exception_t *p_e )
 {
-    libvlc_media_descriptor_t * p_media_desc;
+    input_item_t * p_input_item;
+    libvlc_media_descriptor_t * p_md;
+
+    p_input_item = input_ItemNew( p_instance->p_libvlc_int, "vlc://nop", psz_name );
 
     if (!p_input_item)
     {
-        libvlc_exception_raise( p_e, "No input item given" );
+        libvlc_exception_raise( p_e, "Can't create md's input_item" );
         return NULL;
     }
 
-    p_media_desc = malloc( sizeof(libvlc_media_descriptor_t) );
-    p_media_desc->p_libvlc_instance = p_instance;
-    p_media_desc->p_input_item      = p_input_item;
-    p_media_desc->b_preparsed       = VLC_TRUE;
+    p_md = libvlc_media_descriptor_new_from_input_item( p_instance,
+                p_input_item, p_e );
+
+    p_md->p_subitems = libvlc_media_list_new( p_md->p_libvlc_instance, NULL );
 
-    return p_media_desc;
+    return p_md;
+}
+
+/**************************************************************************
+ * Add an option to the media descriptor,
+ * that will be used to determine how the media_instance will read the
+ * media_descriptor. This allow to use VLC advanced reading/streaming
+ * options in a per-media basis
+ *
+ * The options are detailled in vlc --long-help, for instance "--sout-all"
+ **************************************************************************/
+void libvlc_media_descriptor_add_option(
+                                   libvlc_media_descriptor_t * p_md,
+                                   const char * ppsz_option,
+                                   libvlc_exception_t *p_e )
+{
+    (void)p_e;
+    input_ItemAddOpt( p_md->p_input_item, ppsz_option,
+                      VLC_INPUT_OPTION_UNIQUE|VLC_INPUT_OPTION_TRUSTED );
 }
 
 /**************************************************************************
  * Delete a media descriptor object
  **************************************************************************/
-void libvlc_media_descriptor_destroy( libvlc_media_descriptor_t *p_md )
+void libvlc_media_descriptor_release( libvlc_media_descriptor_t *p_md )
 {
+    int i;
     if (!p_md)
         return;
 
-    /* XXX: locking */
-    input_ItemClean( p_md->p_input_item );
+    p_md->i_refcount--;
+
+    if( p_md->i_refcount > 0 )
+        return;
+
+    if( p_md->p_subitems )
+        libvlc_media_list_release( p_md->p_subitems );
+
+    uninstall_input_item_observer( p_md );
+    vlc_gc_decref( p_md->p_input_item );
+
+    /* Construct the event */
+    libvlc_event_t event;
+    event.type = libvlc_MediaDescriptorFreed;
+    event.u.media_descriptor_freed.md = p_md;
+
+    /* Send the event */
+    libvlc_event_send( p_md->p_event_manager, &event );
+
+    libvlc_event_manager_release( p_md->p_event_manager );
 
+    char ** all_keys = vlc_dictionary_all_keys( &p_md->tags );
+    for( i = 0; all_keys[i]; i++ )
+    {
+        int j;
+        struct libvlc_tags_storage_t * p_ts = vlc_dictionary_value_for_key( &p_md->tags, all_keys[i] );
+        for( j = 0; j < p_ts->i_count; j++ )
+        {
+            free( p_ts->ppsz_tags[j] );
+            free( p_ts->ppsz_tags );
+        }
+        free( p_ts );
+    }
+    vlc_dictionary_clear( &p_md->tags );
     free( p_md );
 }
 
 /**************************************************************************
- * Delete a media descriptor object
+ * Retain a media descriptor object
+ **************************************************************************/
+void libvlc_media_descriptor_retain( libvlc_media_descriptor_t *p_md )
+{
+    if (!p_md)
+        return;
+
+    p_md->i_refcount++;
+}
+
+/**************************************************************************
+ * Duplicate a media descriptor object
  **************************************************************************/
 libvlc_media_descriptor_t *
 libvlc_media_descriptor_duplicate( libvlc_media_descriptor_t *p_md_orig )
 {
-    libvlc_media_descriptor_t * p_md;
-
-    p_md = malloc( sizeof(libvlc_media_descriptor_t) );
-    memcpy( p_md, p_md_orig, sizeof(libvlc_media_descriptor_t) );
+    return libvlc_media_descriptor_new_from_input_item(
+        p_md_orig->p_libvlc_instance, p_md_orig->p_input_item, NULL );
+}
 
-    return p_md;
+/**************************************************************************
+ * Retain a media descriptor object
+ **************************************************************************/
+char *
+libvlc_media_descriptor_get_mrl( libvlc_media_descriptor_t * p_md,
+                                 libvlc_exception_t * p_e )
+{
+    (void)p_e;
+    return input_item_GetURI( p_md->p_input_item );
 }
 
 /**************************************************************************
  * Getter for meta information
  **************************************************************************/
-static const int meta_conversion[] =
-{
-    [libvlc_meta_Title]  = 0, /* Offset in the vlc_meta_t structure */
-    [libvlc_meta_Artist] = 1
-};
 
-char * libvlc_media_descriptor_get_meta( libvlc_media_descriptor_t *p_meta_desc,
+char * libvlc_media_descriptor_get_meta( libvlc_media_descriptor_t *p_md,
                                          libvlc_meta_t e_meta,
                                          libvlc_exception_t *p_e )
 {
-    char ** ppsz_meta;
-    char *ppz_meta;
+    VLC_UNUSED(p_e);
+
+    char * psz_meta;
 
     /* XXX: locking */
 
-    preparse_if_needed( p_meta_desc );
+    preparse_if_needed( p_md );
+
+    psz_meta = input_item_GetMeta( p_md->p_input_item,
+                                   libvlc_to_vlc_meta[e_meta] );
+    
+    if( e_meta == libvlc_meta_ArtworkURL && !psz_meta )
+    {
+        playlist_AskForArtEnqueue(
+                p_md->p_libvlc_instance->p_libvlc_int->p_playlist,
+                p_md->p_input_item );
+    }
+
+    /* Should be integrated in core */
+    if( !psz_meta && e_meta == libvlc_meta_Title && p_md->p_input_item->psz_name )
+    {
+        free( psz_meta );
+        return strdup( p_md->p_input_item->psz_name );
+    }
+
+    return psz_meta;
+}
+
+/**************************************************************************
+ * Getter for state information
+ * Can be error, playing, buffering, NothingSpecial.
+ **************************************************************************/
+
+libvlc_state_t
+libvlc_media_descriptor_get_state( libvlc_media_descriptor_t *p_md,
+                                   libvlc_exception_t *p_e )
+{
+    (void)p_e;
+    return p_md->state;
+}
+
+/**************************************************************************
+ * Setter for state information (LibVLC Internal)
+ **************************************************************************/
+
+void
+libvlc_media_descriptor_set_state( libvlc_media_descriptor_t *p_md,
+                                   libvlc_state_t state,
+                                   libvlc_exception_t *p_e )
+{
+    (void)p_e;
+    libvlc_event_t event;
+
+    p_md->state = state;
+
+    /* Construct the event */
+    event.type = libvlc_MediaDescriptorStateChanged;
+    event.u.media_descriptor_state_changed.new_state = state;
+
+    /* Send the event */
+    libvlc_event_send( p_md->p_event_manager, &event );
+}
+
+/**************************************************************************
+ * Add a tag
+ **************************************************************************/
+void libvlc_media_descriptor_add_tag( libvlc_media_descriptor_t *p_md,
+                                      const char * key,
+                                      const libvlc_tag_t tag,
+                                      libvlc_exception_t *p_e )
+{
+    VLC_UNUSED(p_e);
+
+    struct libvlc_tags_storage_t * p_ts;
+
+    if( !tag || !key )
+        return;
+    p_ts = vlc_dictionary_value_for_key( &p_md->tags, key );
+
+    if( !p_ts )
+    {
+        p_ts = malloc(sizeof(struct libvlc_tags_storage_t));
+        memset( p_ts, 0, sizeof(struct libvlc_tags_storage_t) );
+    }
+    p_ts->i_count++;
+
+    if( !p_ts->ppsz_tags )
+        p_ts->ppsz_tags = malloc(sizeof(char*)*(p_ts->i_count));
+    else
+        p_ts->ppsz_tags = realloc(p_ts->ppsz_tags, sizeof(char*)*(p_ts->i_count));
+    p_ts->ppsz_tags[p_ts->i_count-1] = strdup( tag );
+}
+
+
+/**************************************************************************
+ * Remove a tag
+ **************************************************************************/
+void libvlc_media_descriptor_remove_tag( libvlc_media_descriptor_t *p_md,
+                                         const char * key,
+                                         const libvlc_tag_t tag,
+                                         libvlc_exception_t *p_e )
+{
+    VLC_UNUSED(p_e);
+
+    struct libvlc_tags_storage_t * p_ts;
+    int i;
+
+    if( !tag || !key )
+        return;
+    p_ts = vlc_dictionary_value_for_key( &p_md->tags, key );
+
+    if( !p_ts )
+        return;
+
+    for( i = 0; i < p_ts->i_count; i++ )
+    {
+        if( !strcmp( p_ts->ppsz_tags[i], tag ) )
+        {
+            free( p_ts->ppsz_tags[i] );
+            memcpy( p_ts->ppsz_tags + i + 1, p_ts->ppsz_tags + i, (p_ts->i_count - i - 2)*sizeof(char*) );
+            /* Don't dealloc, the memory will be regain if we add a new tag */
+            p_ts->i_count--;
+            return;
+        }
+    }
+}
+
+/**************************************************************************
+ * Get tags count
+ **************************************************************************/
+int libvlc_media_descriptor_tags_count_for_key( libvlc_media_descriptor_t *p_md,
+                                                 const char * key,
+                                                 libvlc_exception_t *p_e )
+{
+    VLC_UNUSED(p_e);
+
+    struct libvlc_tags_storage_t * p_ts;
+
+    if( !key )
+        return 0;
+    p_ts = vlc_dictionary_value_for_key( &p_md->tags, key );
+
+    if( !p_ts )
+        return 0;
+    return p_ts->i_count;
+}
+
+/**************************************************************************
+ * Get a tag
+ **************************************************************************/
+libvlc_tag_t
+libvlc_media_descriptor_tag_at_index_for_key( libvlc_media_descriptor_t *p_md,
+                                              int i,
+                                              const char * key,
+                                              libvlc_exception_t *p_e )
+{
+    VLC_UNUSED(p_e);
+
+    struct libvlc_tags_storage_t * p_ts;
 
-    ppsz_meta = (char**)p_meta_desc->p_input_item->p_meta;
-    ppz_meta = ppsz_meta[ meta_conversion[e_meta] ];
+    if( !key )
+        return NULL;
+    p_ts = vlc_dictionary_value_for_key( &p_md->tags, key );
 
-    if( !ppz_meta )
+    if( !p_ts )
         return NULL;
+    return strdup( p_ts->ppsz_tags[i] );
+}
+
+/**************************************************************************
+ * subitems
+ **************************************************************************/
+libvlc_media_list_t *
+libvlc_media_descriptor_subitems( libvlc_media_descriptor_t * p_md,
+                                  libvlc_exception_t * p_e )
+{
+    VLC_UNUSED(p_e);
+
+    if( p_md->p_subitems )
+        libvlc_media_list_retain( p_md->p_subitems );
+    return p_md->p_subitems;
+}
+
+/**************************************************************************
+ * event_manager
+ **************************************************************************/
+libvlc_event_manager_t *
+libvlc_media_descriptor_event_manager( libvlc_media_descriptor_t * p_md,
+                                       libvlc_exception_t * p_e )
+{
+    VLC_UNUSED(p_e);
+
+    return p_md->p_event_manager;
+}
+
+/**************************************************************************
+ * Get duration of media_descriptor object.
+ **************************************************************************/
+vlc_int64_t
+libvlc_media_descriptor_get_duration( libvlc_media_descriptor_t * p_md,
+                                      libvlc_exception_t * p_e )
+{
+    VLC_UNUSED(p_e);
+
+    if( p_md && p_md->p_input_item)
+    {
+        return input_item_GetDuration( p_md->p_input_item );
+    }
+    else
+    {
+        return -1;
+    }
+}
+
+/**************************************************************************
+ * Get preparsed status for media_descriptor object.
+ **************************************************************************/
+int
+libvlc_media_descriptor_is_preparsed( libvlc_media_descriptor_t * p_md,
+                                       libvlc_exception_t * p_e )
+{
+    VLC_UNUSED(p_e);
 
-    return strdup( ppz_meta );
+    if( p_md && p_md->p_input_item)
+    {
+        return input_item_IsPreparsed( p_md->p_input_item );
+    }
+    else
+    {
+        return VLC_FALSE;
+    }
 }
+
+/**************************************************************************
+ * Sets media descriptor's user_data. user_data is specialized data 
+ * accessed by the host application, VLC.framework uses it as a pointer to 
+ * an native object that references a libvlc_media_descriptor_t pointer
+ **************************************************************************/
+void 
+libvlc_media_descriptor_set_user_data( libvlc_media_descriptor_t * p_md,
+                                       void * p_new_user_data,
+                                       libvlc_exception_t * p_e )
+{
+    VLC_UNUSED(p_e);
+
+    if( p_md )
+    {
+        p_md->p_user_data = p_new_user_data;
+    }
+}
+
+/**************************************************************************
+ * Get media descriptor's user_data. user_data is specialized data 
+ * accessed by the host application, VLC.framework uses it as a pointer to 
+ * an native object that references a libvlc_media_descriptor_t pointer
+ **************************************************************************/
+void *
+libvlc_media_descriptor_get_user_data( libvlc_media_descriptor_t * p_md,
+                                       libvlc_exception_t * p_e )
+{
+    VLC_UNUSED(p_e);
+
+    if( p_md )
+    {
+        return p_md->p_user_data;
+    }
+    else
+    {
+        return NULL;
+    }
+}
+