avformat/vividas: check if viv->sb_pb is not NULL

6 years ago · d62cb29716
parent e9909fe194
commit d62cb29716
1 changed files with 4 additions and 0 deletions
--- a/libavformat/vividas.c
+++ b/libavformat/vividas.c
@ -582,6 +582,8 @@ static int viv_read_packet(AVFormatContext *s,
    int64_t off;
    int ret;

+    if (!viv->sb_pb)
+        return AVERROR(EIO);
    if (avio_feof(viv->sb_pb))
        return AVERROR_EOF;

@ -615,6 +617,8 @@ static int viv_read_packet(AVFormatContext *s,
    }

    pb = viv->sb_pb;
+    if (!pb)
+        return AVERROR(EIO);
    off = avio_tell(pb);
    off += viv->sb_entries[viv->current_sb_entry].size;