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| author | Michael Niedermayer <michaelni@gmx.at> | 2011-12-14 22:20:39 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2011-12-14 22:24:44 +0100 |
| commit | e1ba29c76430ce511fd901c8b7a1bd199b169dc0 (patch) | |
| tree | 6ffb3cd1e4cc68c1e3bdd2167fd389a4c78f0e12 /libavcodec | |
| parent | 76b9a0961c33c9eb19b220c6f0edfbb3e79fcd59 (diff) | |
| download | ffmpeg-e1ba29c76430ce511fd901c8b7a1bd199b169dc0.tar.gz | |
4xm: check if there are bits left in decode_i_block()
Fixed Ticket753
Bug Found by: Diana Elena Muscalu
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/4xm.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/4xm.c b/libavcodec/4xm.c index 9350f06e9b..f854f1cfb5 100644 --- a/libavcodec/4xm.c +++ b/libavcodec/4xm.c @@ -459,6 +459,11 @@ static int decode_p_frame(FourXContext *f, const uint8_t *buf, int length){ static int decode_i_block(FourXContext *f, DCTELEM *block){ int code, i, j, level, val; + if(get_bits_left(&f->gb) < 2){ + av_log(f->avctx, AV_LOG_ERROR, "%d bits left before decode_i_block()\n", get_bits_left(&f->gb)); + return -1; + } + /* DC coef */ val = get_vlc2(&f->pre_gb, f->pre_vlc.table, ACDC_VLC_BITS, 3); if (val>>4){ |