diff options
| author | Michael Niedermayer <michaelni@gmx.at> | 2011-10-01 17:41:28 +0200 |
|---|---|---|
| committer | Janne Grunau <janne-libav@jannau.net> | 2012-03-13 00:31:52 +0100 |
| commit | 3aa661ec561d7a20812b84b353b0d7855ac346c8 (patch) | |
| tree | 0c97713f0ffa409754ddc099251ed19f82382749 /libavcodec/h264_ps.c | |
| parent | bd3e07c82ae558c2cc3616115161827630826ec1 (diff) | |
h264: improve parsing of broken AVC SPS
Parsing the entire NAL as SPS fixes decoding of some AVC bitstreams
with broken escaping. Since the size of the NAL unit is known and
checked against the buffer end we can parse it entirely without buffer
overreads.
Fixes playback of
http://streams.videolan.org/streams/mp4/Mr_MrsSmith-h264_aac.mp4
Signed-off-by: Janne Grunau <janne-libav@jannau.net>
Diffstat (limited to 'libavcodec/h264_ps.c')
| -rw-r--r-- | libavcodec/h264_ps.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libavcodec/h264_ps.c b/libavcodec/h264_ps.c index 287702c7c4..276eb77d1d 100644 --- a/libavcodec/h264_ps.c +++ b/libavcodec/h264_ps.c @@ -228,7 +228,6 @@ static inline int decode_vui_parameters(H264Context *h, SPS *sps){ get_ue_golomb(&s->gb); /*max_dec_frame_buffering*/ if (get_bits_left(&s->gb) < 0) { - av_log(h->s.avctx, AV_LOG_ERROR, "Overread VUI by %d bits\n", -get_bits_left(&s->gb)); sps->num_reorder_frames=0; sps->bitstream_restriction_flag= 0; } @@ -238,6 +237,10 @@ static inline int decode_vui_parameters(H264Context *h, SPS *sps){ return -1; } } + if (get_bits_left(&s->gb) < 0) { + av_log(h->s.avctx, AV_LOG_ERROR, "Overread VUI by %d bits\n", -get_bits_left(&s->gb)); + return AVERROR_INVALIDDATA; + } return 0; } |