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| author | Alex Converse <alex.converse@gmail.com> | 2011-11-03 15:56:37 -0700 |
|---|---|---|
| committer | Alex Converse <alex.converse@gmail.com> | 2011-11-07 10:50:48 -0800 |
| commit | 7c5dfc174be59afa671a98ec85fe208c528ab64f (patch) | |
| tree | 6ecc31caa894644e06291b23bc9a1c6b23e5b5ba /libavcodec/mpeg12enc.c | |
| parent | a1684cf82d1aa35de0ae97724477501f92395c2b (diff) | |
| download | ffmpeg-7c5dfc174be59afa671a98ec85fe208c528ab64f.tar.gz | |
mpeg12enc: Don't set up run-level info for level 0.
run: The number of zero coefficients preceding a non-zero coefficient,
in the scan order. The absolute value of the non-zero coefficient is
called "level".
The run-level code makes illegal reads when trying to set up tables for
nonsense level 0.
Diffstat (limited to 'libavcodec/mpeg12enc.c')
| -rw-r--r-- | libavcodec/mpeg12enc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/mpeg12enc.c b/libavcodec/mpeg12enc.c index 5dedabd268..26d26c7217 100644 --- a/libavcodec/mpeg12enc.c +++ b/libavcodec/mpeg12enc.c @@ -74,6 +74,8 @@ static void init_uni_ac_vlc(RLTable *rl, uint8_t *uni_ac_vlc_len){ for(i=0; i<128; i++){ int level= i-64; int run; + if (!level) + continue; for(run=0; run<64; run++){ int len, bits, code; |