From f7813a5324be39d13ab536c245d15dfc602a7849 Mon Sep 17 00:00:00 2001
From: Tim Redfern <tim@eclectronics.org>
Date: Sun, 29 Dec 2013 12:19:38 +0000
Subject: basic type mechanism working

---
 ffmpeg/libavformat/lvfdec.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

(limited to 'ffmpeg/libavformat/lvfdec.c')

diff --git a/ffmpeg/libavformat/lvfdec.c b/ffmpeg/libavformat/lvfdec.c
index f8dda58..1ff67c8 100644
--- a/ffmpeg/libavformat/lvfdec.c
+++ b/ffmpeg/libavformat/lvfdec.c
@@ -25,9 +25,13 @@
 
 static int lvf_probe(AVProbeData *p)
 {
-    if (AV_RL32(p->buf) == MKTAG('L', 'V', 'F', 'F'))
-        return AVPROBE_SCORE_MAX / 2;
-    return 0;
+    if (AV_RL32(p->buf) != MKTAG('L', 'V', 'F', 'F'))
+        return 0;
+
+    if (!AV_RL32(p->buf + 16) || AV_RL32(p->buf + 16) > 256)
+        return AVPROBE_SCORE_MAX / 8;
+
+    return AVPROBE_SCORE_EXTENSION;
 }
 
 static int lvf_read_header(AVFormatContext *s)
-- 
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