gst/qtdemux/: Improve meta-data handling, add 'comment', 'description' and 'copyright' tag handling.

Original commit message from CVS:
Patch by: Bastien Nocera <hadess at hadess dot net>
* gst/qtdemux/qtdemux.c: (qtdemux_tag_add_str),
(qtdemux_parse_udta):
* gst/qtdemux/qtdemux_fourcc.h:
Improve meta-data handling, add 'comment', 'description' and
'copyright' tag handling.
Fixes #535935

2 files changed, 49 insertions, 9 deletions

diff --git a/gst/qtdemux/qtdemux.c b/gst/qtdemux/qtdemux.c
index 6b87dad0..a1dc6097 100644
--- a/gst/qtdemux/qtdemux.c
+++ b/gst/qtdemux/qtdemux.c
@@ -3680,6 +3680,7 @@ qtdemux_tag_add_str (GstQTDemux * qtdemux, const char *tag, GNode * node)
   char *s;
   int len;
   int type;
+  int offset;
 
   data = qtdemux_tree_get_child_by_type (node, FOURCC_data);
   if (data) {
@@ -3697,6 +3698,27 @@ qtdemux_tag_add_str (GstQTDemux * qtdemux, const char *tag, GNode * node)
         GST_DEBUG_OBJECT (qtdemux, "failed to convert %s tag to UTF-8", tag);
       }
     }
+  } else {
+    len = QT_UINT32 (node->data);
+    type = QT_UINT32 ((guint8 *) node->data + 4);
+    if (type & 0xa9000000) {
+      /* Type starts with the (C) symbol, so the next 32 bits are
+       * the language code, which we ignore */
+      offset = 12;
+      GST_DEBUG_OBJECT (qtdemux, "found international text tag");
+    } else {
+      offset = 8;
+      GST_DEBUG_OBJECT (qtdemux, "found normal text tag");
+    }
+    s = gst_tag_freeform_string_to_utf8 ((char *) node->data + offset,
+        len - offset, env_vars);
+    if (s) {
+      GST_DEBUG_OBJECT (qtdemux, "adding tag %s", GST_STR_NULL (s));
+      gst_tag_list_add (qtdemux->tag_list, GST_TAG_MERGE_REPLACE, tag, s, NULL);
+      g_free (s);
+    } else {
+      GST_DEBUG_OBJECT (qtdemux, "failed to convert %s tag to UTF-8", tag);
+    }
   }
 }
 
@@ -3819,15 +3841,15 @@ qtdemux_parse_udta (GstQTDemux * qtdemux, GNode * udta)
   GNode *node;
 
   meta = qtdemux_tree_get_child_by_type (udta, FOURCC_meta);
-  if (meta == NULL) {
-    GST_LOG_OBJECT (qtdemux, "no meta");
-    return;
-  }
-
-  ilst = qtdemux_tree_get_child_by_type (meta, FOURCC_ilst);
-  if (ilst == NULL) {
-    GST_LOG_OBJECT (qtdemux, "no ilst");
-    return;
+  if (meta != NULL) {
+    ilst = qtdemux_tree_get_child_by_type (meta, FOURCC_ilst);
+    if (ilst == NULL) {
+      GST_LOG_OBJECT (qtdemux, "no ilst");
+      return;
+    }
+  } else {
+    ilst = udta;
+    GST_LOG_OBJECT (qtdemux, "no meta so using udta itself");
   }
 
   GST_DEBUG_OBJECT (qtdemux, "new tag list");
@@ -3858,6 +3880,21 @@ qtdemux_parse_udta (GstQTDemux * qtdemux, GNode * udta)
     qtdemux_tag_add_str (qtdemux, GST_TAG_ALBUM, node);
   }
 
+  node = qtdemux_tree_get_child_by_type (ilst, FOURCC__cpy);
+  if (node) {
+    qtdemux_tag_add_str (qtdemux, GST_TAG_COPYRIGHT, node);
+  }
+
+  node = qtdemux_tree_get_child_by_type (ilst, FOURCC__cmt);
+  if (node) {
+    qtdemux_tag_add_str (qtdemux, GST_TAG_COMMENT, node);
+  }
+
+  node = qtdemux_tree_get_child_by_type (ilst, FOURCC__des);
+  if (node) {
+    qtdemux_tag_add_str (qtdemux, GST_TAG_DESCRIPTION, node);
+  }
+
   node = qtdemux_tree_get_child_by_type (ilst, FOURCC__day);
   if (node) {
     qtdemux_tag_add_date (qtdemux, GST_TAG_DATE, node);
diff --git a/gst/qtdemux/qtdemux_fourcc.h b/gst/qtdemux/qtdemux_fourcc.h
index cd8197c3..a721ecf4 100644
--- a/gst/qtdemux/qtdemux_fourcc.h
+++ b/gst/qtdemux/qtdemux_fourcc.h
@@ -78,6 +78,9 @@ G_BEGIN_DECLS
 #define FOURCC_meta     GST_MAKE_FOURCC('m','e','t','a')
 #define FOURCC_ilst     GST_MAKE_FOURCC('i','l','s','t')
 #define FOURCC__nam     GST_MAKE_FOURCC(0xa9,'n','a','m')
+#define FOURCC__cmt     GST_MAKE_FOURCC(0xa9,'c','m','t')
+#define FOURCC__des     GST_MAKE_FOURCC(0xa9,'d','e','s')
+#define FOURCC__cpy     GST_MAKE_FOURCC(0xa9,'c','p','y')
 #define FOURCC__ART     GST_MAKE_FOURCC(0xa9,'A','R','T')
 #define FOURCC__wrt     GST_MAKE_FOURCC(0xa9,'w','r','t')
 #define FOURCC__grp     GST_MAKE_FOURCC(0xa9,'g','r','p')