libvlc: Add meta extras related API

include/vlc/libvlc_media.h

@@ -474,6 +474,54 @@ LIBVLC_API void libvlc_media_set_meta( libvlc_media_t *p_md,
                                            libvlc_meta_t e_meta,
                                            const char *psz_value );
 
+/**
+ * Read the meta extra of the media.
+ *
+ * If the media has not yet been parsed this will return NULL.
+ *
+ * \see libvlc_media_parse
+ * \see libvlc_media_parse_with_options
+ *
+ * \param p_md the media descriptor
+ * \param psz_name the meta extra to read (nonnullable)
+ * \return the media's meta extra or NULL
+ */
+LIBVLC_API char *libvlc_media_get_meta_extra( libvlc_media_t *p_md,
+                                              const char *psz_name );
+
+/**
+ * Set the meta of the media (this function will not save the meta, call
+ * libvlc_media_save_meta in order to save the meta)
+ *
+ * \param p_md the media descriptor
+ * \param psz_name the meta extra to write (nonnullable)
+ * \param psz_value the media's meta extra (nullable)
+ * Removed from meta extra if set to NULL
+ */
+LIBVLC_API void libvlc_media_set_meta_extra( libvlc_media_t *p_md,
+                                             const char *psz_name,
+                                             const char *psz_value );
+
+/**
+ * Read the meta extra names of the media.
+ *
+ * \param p_md the media descriptor
+ * \param pppsz_names the media's meta extra name array
+ * you can access the elements using the return value (count)
+ * must be released with libvlc_media_meta_extra_names_release()
+ * \return the meta extra count
+ */
+LIBVLC_API unsigned libvlc_media_get_meta_extra_names( libvlc_media_t *p_md,
+                                                       char ***pppsz_names );
+
+/**
+ * Release a media meta extra names
+ *
+ * \param ppsz_names meta extra names array to release
+ * \param i_count number of elements in the array
+ */
+LIBVLC_API void libvlc_media_meta_extra_names_release( char **ppsz_names,
+                                                       unsigned i_count );
 
 /**
  * Save the meta previously set

lib/libvlc.sym

@@ -209,6 +209,10 @@ libvlc_media_slaves_release
 libvlc_media_set_meta
 libvlc_media_set_user_data
 libvlc_media_subitems
+libvlc_media_get_meta_extra
+libvlc_media_set_meta_extra
+libvlc_media_get_meta_extra_names
+libvlc_media_meta_extra_names_release
 libvlc_new
 libvlc_playlist_play
 libvlc_release

lib/media.c

@@ -695,6 +695,39 @@ void libvlc_media_set_meta( libvlc_media_t *p_md, libvlc_meta_t e_meta, const ch
     input_item_SetMeta( p_md->p_input_item, libvlc_to_vlc_meta[e_meta], psz_value );
 }
 
+// Getter for meta extra information
+char *libvlc_media_get_meta_extra( libvlc_media_t *p_md, const char *psz_name )
+{
+    assert( p_md );
+    return input_item_GetMetaExtra( p_md->p_input_item, psz_name );
+}
+
+// Set the meta extra of the media
+void libvlc_media_set_meta_extra( libvlc_media_t *p_md, const char *psz_name, const char *psz_value)
+{
+    assert( p_md );
+    input_item_SetMetaExtra( p_md->p_input_item, psz_name, psz_value );
+}
+
+// Getter for meta extra names
+unsigned libvlc_media_get_meta_extra_names( libvlc_media_t *p_md, char ***pppsz_names )
+{
+    assert( p_md && pppsz_names );
+    return input_item_GetMetaExtraNames( p_md->p_input_item, pppsz_names );
+}
+
+// Release a media meta extra names
+void libvlc_media_meta_extra_names_release( char **ppsz_names, unsigned i_count )
+{
+    if( i_count > 0 )
+    {
+        assert( ppsz_names );
+        for ( unsigned i = 0; i < i_count; i++ )
+            free( ppsz_names[i] );
+    }
+    free( ppsz_names );
+}
+
 // Save the meta previously set
 int libvlc_media_save_meta( libvlc_instance_t *inst, libvlc_media_t *p_md )
 {