From 6934c7e2fc7d06534419d22c3dbb964287c81ab0 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Mon, 16 Dec 2013 10:18:23 +0100
Subject: [PATCH] h264parse: Post VIDEO_CODEC tag

---
 gst/videoparsers/gsth264parse.c | 27 ++++++++++++++++++++++++---
 gst/videoparsers/gsth264parse.h |  2 ++
 2 files changed, 26 insertions(+), 3 deletions(-)

diff --git a/gst/videoparsers/gsth264parse.c b/gst/videoparsers/gsth264parse.c
index a9153c8..8a144d6 100644
--- a/gst/videoparsers/gsth264parse.c
+++ b/gst/videoparsers/gsth264parse.c
@@ -26,9 +26,8 @@
 #  include "config.h"
 #endif
 
-#include <gst/base/gstbytereader.h>
-#include <gst/base/gstbytewriter.h>
-#include <gst/base/gstadapter.h>
+#include <gst/base/base.h>
+#include <gst/pbutils/pbutils.h>
 #include <gst/video/video.h>
 #include "gsth264parse.h"
 
@@ -207,6 +206,8 @@ gst_h264_parse_reset (GstH264Parse * h264parse)
   h264parse->ts_trn_nb = GST_CLOCK_TIME_NONE;
   h264parse->do_ts = TRUE;
 
+  h264parse->sent_codec_tag = FALSE;
+
   h264parse->pending_key_unit_ts = GST_CLOCK_TIME_NONE;
   h264parse->force_key_unit_event = NULL;
 
@@ -1568,6 +1569,26 @@ gst_h264_parse_pre_push_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
   GstEvent *event;
 
   h264parse = GST_H264_PARSE (parse);
+
+  if (!h264parse->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 (h264parse),
+        gst_event_new_tag (taglist));
+
+    /* also signals the end of first-frame processing */
+    h264parse->sent_codec_tag = TRUE;
+  }
+
   buffer = frame->buffer;
 
   if ((event = check_pending_key_unit_event (h264parse->force_key_unit_event,
diff --git a/gst/videoparsers/gsth264parse.h b/gst/videoparsers/gsth264parse.h
index 88de544..d8eb4d9 100644
--- a/gst/videoparsers/gsth264parse.h
+++ b/gst/videoparsers/gsth264parse.h
@@ -78,6 +78,8 @@ struct _GstH264Parse
   gboolean have_sps;
   gboolean have_pps;
 
+  gboolean sent_codec_tag;
+
   /* collected SPS and PPS NALUs */
   GstBuffer *sps_nals[GST_H264_MAX_SPS_COUNT];
   GstBuffer *pps_nals[GST_H264_MAX_PPS_COUNT];
-- 
2.7.4