control/media_descriptor.c: Send a libvlc_MediaDescriptorFreed event, when the...

control/media_descriptor.c: Send a libvlc_MediaDescriptorFreed event, when the md is freed. (Patch by Enrique Osuna).

include/vlc/libvlc_structures.h

@@ -298,6 +298,7 @@ typedef enum libvlc_event_type_t {
     libvlc_MediaDescriptorSubItemAdded,
     libvlc_MediaDescriptorDurationChanged,
     libvlc_MediaDescriptorPreparsedChanged,
+    libvlc_MediaDescriptorFreed,
 
     libvlc_MediaInstancePlayed,
     libvlc_MediaInstancePaused,
@@ -343,6 +344,10 @@ typedef struct libvlc_event_t
         {
             int new_status;
         } media_descriptor_preparsed_changed;
+        struct
+        {
+            libvlc_media_descriptor_t * md;
+        } media_descriptor_freed;
             
         /* media instance */
         struct

src/control/media_descriptor.c

@@ -261,6 +261,8 @@ libvlc_media_descriptor_t * libvlc_media_descriptor_new_from_input_item(
         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 );
 
@@ -316,6 +318,14 @@ void libvlc_media_descriptor_release( libvlc_media_descriptor_t *p_md )
     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 );
+
     char ** all_keys = vlc_dictionary_all_keys( &p_md->tags );
     for( i = 0; all_keys[i]; i++ )
     {