lavf probe: prevent codec probe with no data at all seen
authorJanne Grunau <janne-libav@jannau.net>
Fri, 7 Sep 2012 14:27:21 +0000 (16:27 +0200)
committerJanne Grunau <janne-libav@jannau.net>
Thu, 20 Sep 2012 12:50:06 +0000 (14:50 +0200)
This occurs with fuzzed mpeg-ts files. set_codec_from_probe_data() is
called with a zeroed AVProbeData since no packet made through for
specific stream.

libavformat/utils.c

index e4e4a8b..64be7c8 100644 (file)
@@ -625,6 +625,11 @@ static void probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
             memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
         } else {
             st->probe_packets = 0;
+            if (!pd->buf_size) {
+                av_log(s, AV_LOG_ERROR, "nothing to probe for stream %d\n",
+                       st->index);
+                return;
+            }
         }
 
         if (!st->probe_packets ||