avformat/genh: Fix tools/probetest failure

Reviewed-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
FFmpeg · Nov 18, 2015 · 3a4d828 · 3a4d828
1 parent 0be48dd
commit 3a4d828
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/libavformat/genh.c b/libavformat/genh.c
@@ -32,6 +32,8 @@ static int genh_probe(AVProbeData *p)
 {
     if (AV_RL32(p->buf) != MKTAG('G','E','N','H'))
         return 0;
+    if (AV_RL32(p->buf+4) <= 0 || AV_RL32(p->buf+4) > 0xFFFF) // channels
+        return 0;
 
     return AVPROBE_SCORE_MAX / 3 * 2;
 }