tag: Adds GST_TAG_DATE_TIME tag

Adds a new tag that represents a date and time a media was
created

API: GST_TAG_DATE_TIME

Fixes #594504

docs/gst/gstreamer-sections.txt

@@ -2145,6 +2145,7 @@ GST_TAG_ALBUM_SORTNAME
 GST_TAG_ALBUM_ARTIST
 GST_TAG_ALBUM_ARTIST_SORTNAME
 GST_TAG_DATE
+GST_TAG_DATE_TIME
 GST_TAG_GENRE
 GST_TAG_COMMENT
 GST_TAG_EXTENDED_COMMENT

gst/gsttaglist.c

@@ -127,6 +127,10 @@ _gst_tag_initialize (void)
       _("The artist of the entire album, as it should be sorted"), NULL);
   gst_tag_register (GST_TAG_DATE, GST_TAG_FLAG_META, GST_TYPE_DATE,
       _("date"), _("date the data was created (as a GDate structure)"), NULL);
+  gst_tag_register (GST_TAG_DATE_TIME, GST_TAG_FLAG_META, GST_TYPE_DATE_TIME,
+      _("datetime"),
+      _("date and time the data was created (as a GstDateTime structure)"),
+      NULL);
   gst_tag_register (GST_TAG_GENRE, GST_TAG_FLAG_META,
       G_TYPE_STRING,
       _("genre"),

gst/gsttaglist.h

@@ -467,6 +467,13 @@ gboolean     gst_tag_list_get_buffer_index  (const GstTagList * list,
  * date the data was created (#GDate structure)
  */
 #define GST_TAG_DATE                   "date"
+/**
+ * GST_TAG_DATE_TIME:
+ * date and time the data was created (#GstDateTime structure)
+ *
+ * Since: 0.10.31
+ */
+#define GST_TAG_DATE_TIME              "datetime"
 /**
  * GST_TAG_GENRE:
  *