From 5efda5caf7d5ce050a200d747a2989b74c077b28 Mon Sep 17 00:00:00 2001
From: Thiago Santos <thiago.sousa.santos@collabora.co.uk>
Date: Fri, 5 Mar 2010 11:06:47 -0300
Subject: [PATCH] qtdemux: add XMP parsing support

Use xmp helpers to parse XMP metadata in udta atom.

Fixes #609539
---
 gst/qtdemux/qtdemux.c        | 27 +++++++++++++++++++++++++++
 gst/qtdemux/qtdemux_fourcc.h |  2 ++
 2 files changed, 29 insertions(+)

diff --git a/gst/qtdemux/qtdemux.c b/gst/qtdemux/qtdemux.c
index c8bc326c9c..99904044e2 100644
--- a/gst/qtdemux/qtdemux.c
+++ b/gst/qtdemux/qtdemux.c
@@ -6636,6 +6636,7 @@ qtdemux_parse_udta (GstQTDemux * qtdemux, GNode * udta)
 {
   GNode *meta;
   GNode *ilst;
+  GNode *xmp_;
   GNode *node;
   gint i;
 
@@ -6675,6 +6676,32 @@ qtdemux_parse_udta (GstQTDemux * qtdemux, GNode * udta)
   g_node_children_foreach (ilst, G_TRAVERSE_ALL,
       (GNodeForeachFunc) qtdemux_tag_add_blob, qtdemux);
 
+  /* parse up XMP_ node if existing */
+  xmp_ = qtdemux_tree_get_child_by_type (udta, FOURCC_XMP_);
+  if (xmp_ != NULL) {
+    GstBuffer *buf;
+    GstTagList *taglist;
+
+    buf = gst_buffer_new ();
+    GST_BUFFER_DATA (buf) = ((guint8 *) xmp_->data) + 8;
+    GST_BUFFER_SIZE (buf) = QT_UINT32 ((guint8 *) xmp_->data) - 8;
+
+    taglist = gst_tag_list_from_xmp_buffer (buf);
+    gst_buffer_unref (buf);
+    if (taglist) {
+      if (qtdemux->tag_list) {
+        GST_DEBUG_OBJECT (qtdemux, "Found XMP tags");
+
+        /* prioritize native tags using _KEEP mode */
+        gst_tag_list_insert (qtdemux->tag_list, taglist, GST_TAG_MERGE_KEEP);
+        gst_tag_list_free (taglist);
+      } else
+        qtdemux->tag_list = taglist;
+    }
+  } else {
+    GST_DEBUG_OBJECT (qtdemux, "No XMP_ node found");
+  }
+
 }
 
 typedef struct
diff --git a/gst/qtdemux/qtdemux_fourcc.h b/gst/qtdemux/qtdemux_fourcc.h
index 57a2e63936..deccee26cb 100644
--- a/gst/qtdemux/qtdemux_fourcc.h
+++ b/gst/qtdemux/qtdemux_fourcc.h
@@ -201,6 +201,8 @@ G_BEGIN_DECLS
 #define FOURCC_tCt_     GST_MAKE_FOURCC('t','C','t','#')
 #define FOURCC_tCtC     GST_MAKE_FOURCC('t','C','t','C')
 
+#define FOURCC_XMP_     GST_MAKE_FOURCC('X','M','P','_')
+
 G_END_DECLS
 
 #endif /* __GST_QTDEMUX_FOURCC_H__ */