From b3f198b67d022ee1a9bbbf6b77cedea578881c96 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Mon, 16 Dec 2013 10:25:22 +0100
Subject: [PATCH] vc1parse: Post VIDEO_CODEC tag

---
 gst/videoparsers/gstvc1parse.c | 22 +++++++++++++++++++++-
 gst/videoparsers/gstvc1parse.h |  2 ++
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/gst/videoparsers/gstvc1parse.c b/gst/videoparsers/gstvc1parse.c
index 7495df2..9868afa 100644
--- a/gst/videoparsers/gstvc1parse.c
+++ b/gst/videoparsers/gstvc1parse.c
@@ -81,7 +81,8 @@
 
 #include "gstvc1parse.h"
 
-#include <gst/base/gstbytereader.h>
+#include <gst/base/base.h>
+#include <gst/pbutils/pbutils.h>
 #include <string.h>
 
 GST_DEBUG_CATEGORY (vc1_parse_debug);
@@ -1218,6 +1219,25 @@ gst_vc1_parse_pre_push_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
 {
   GstVC1Parse *vc1parse = GST_VC1_PARSE (parse);
 
+  if (!vc1parse->sent_codec_tag) {
+    GstTagList *taglist;
+    GstCaps *caps;
+
+    taglist = gst_tag_list_new_empty ();
+
+    /* codec tag */
+    caps = gst_pad_get_current_caps (GST_BASE_PARSE_SRC_PAD (parse));
+    gst_pb_utils_add_codec_description_to_tag_list (taglist,
+        GST_TAG_VIDEO_CODEC, caps);
+    gst_caps_unref (caps);
+
+    gst_pad_push_event (GST_BASE_PARSE_SRC_PAD (vc1parse),
+        gst_event_new_tag (taglist));
+
+    /* also signals the end of first-frame processing */
+    vc1parse->sent_codec_tag = TRUE;
+  }
+
   if (vc1parse->input_header_format != vc1parse->output_header_format ||
       vc1parse->input_stream_format != vc1parse->output_stream_format) {
     GST_WARNING_OBJECT (vc1parse, "stream conversion not implemented yet");
diff --git a/gst/videoparsers/gstvc1parse.h b/gst/videoparsers/gstvc1parse.h
index ec09fd4..6d97ec8 100644
--- a/gst/videoparsers/gstvc1parse.h
+++ b/gst/videoparsers/gstvc1parse.h
@@ -88,6 +88,8 @@ struct _GstVC1Parse
   /* TRUE if the srcpads should be updated */
   gboolean update_caps;
 
+  gboolean sent_codec_tag;
+
   VC1HeaderFormat input_header_format;
   VC1HeaderFormat output_header_format;
   VC1StreamFormat input_stream_format;
-- 
2.7.4