diff options
| author | Michael Niedermayer <michaelni@gmx.at> | 2013-01-14 05:54:16 +0400 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2013-01-14 06:03:53 +0400 |
| commit | aaa7d2fafcc375d8cdef25a289008821c9c2fbaa (patch) | |
| tree | a1621068966f0a4c803db916343cfb42133061a8 | |
| parent | 55d05286696473487ce51e347985378e28c0713b (diff) | |
h264: don t leave stale pointers in delayed_pic in flush_changes.
Fixes null pointer dereference & assertion failure
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavcodec/h264.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/libavcodec/h264.c b/libavcodec/h264.c index 3b7ad98b99..d8d438e0c8 100644 --- a/libavcodec/h264.c +++ b/libavcodec/h264.c @@ -2153,12 +2153,19 @@ static void idr(H264Context *h) /* forget old pics after a seek */ static void flush_change(H264Context *h) { + int i, j; + h->outputed_poc = h->next_outputed_poc = INT_MIN; h->prev_interlaced_frame = 1; idr(h); h->prev_frame_num = -1; - if (h->s.current_picture_ptr) + if (h->s.current_picture_ptr) { h->s.current_picture_ptr->f.reference = 0; + for (j=i=0; h->delayed_pic[i]; i++) + if (h->delayed_pic[i] != h->s.current_picture_ptr) + h->delayed_pic[j++] = h->delayed_pic[i]; + h->delayed_pic[j] = NULL; + } h->s.first_field = 0; memset(h->ref_list[0], 0, sizeof(h->ref_list[0])); memset(h->ref_list[1], 0, sizeof(h->ref_list[1])); |