From 1549aaba2749f9b8a2fc9e56c849c69a8107098f Mon Sep 17 00:00:00 2001
From: Vincent Penquerc'h <vincent.penquerch@collabora.co.uk>
Date: Tue, 16 Aug 2011 15:22:46 +0100
Subject: [PATCH] flacdec: warn if we see a variable block size where
 unsupported

https://bugzilla.gnome.org/show_bug.cgi?id=650960
---
 ext/flac/gstflacdec.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/ext/flac/gstflacdec.c b/ext/flac/gstflacdec.c
index 2e4085dd63..1f797ba8f0 100644
--- a/ext/flac/gstflacdec.c
+++ b/ext/flac/gstflacdec.c
@@ -408,8 +408,12 @@ gst_flac_dec_scan_got_frame (GstFlacDec * flacdec, guint8 * data, guint size,
     return FALSE;
 
   /* sync */
-  if (data[0] != 0xFF || data[1] != 0xF8)
+  if (data[0] != 0xFF || (data[1] & 0xFC) != 0xF8)
     return FALSE;
+  if (data[1] & 1) {
+    GST_WARNING_OBJECT (flacdec, "Variable block size FLAC unsupported");
+    return FALSE;
+  }
 
   bs = (data[2] & 0xF0) >> 8;   /* blocksize marker   */
   sr = (data[2] & 0x0F);        /* samplerate marker  */