From 8df2314c23386ab7c395664c5ead9f0d8cd044e2 Mon Sep 17 00:00:00 2001
From: Chris Bass <floobleflam@gmail.com>
Date: Tue, 25 Aug 2020 14:54:31 +0100
Subject: [PATCH] ttmlparse: Ensure only single TTML doc parsed

The parser handles only one TTML file at a time, therefore if there are
multiple TTML documets in the input, parse only the first.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1539>
---
 ext/ttml/ttmlparse.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ext/ttml/ttmlparse.c b/ext/ttml/ttmlparse.c
index 25895463af..4914910f7e 100644
--- a/ext/ttml/ttmlparse.c
+++ b/ext/ttml/ttmlparse.c
@@ -1952,7 +1952,7 @@ ttml_parse (const gchar * input, GstClockTime begin, GstClockTime duration,
   }
   GST_CAT_LOG (ttmlparse_debug, "Input:\n%s", input);
 
-  end_tt = g_strrstr (input, TTML_END_TAG);
+  end_tt = g_strstr_len (input, strlen (input), TTML_END_TAG);
 
   if (!end_tt) {
     GST_CAT_DEBUG (ttmlparse_debug, "Need more data");