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| author | Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com> | 2016-11-08 22:32:42 +0100 |
|---|---|---|
| committer | Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com> | 2016-11-27 00:38:56 +0100 |
| commit | 27888d13b8d370b365593312d6755d268a4428f6 (patch) | |
| tree | a269639cec9839052b020612ca03e4f5ae6a96de /libavcodec | |
| parent | 416a8a06b977d8b3d113945701d9690abfdd7622 (diff) | |
| download | ffmpeg-27888d13b8d370b365593312d6755d268a4428f6.tar.gz | |
dvbsubdec: fix division by zero in compute_default_clut
This problem was introduced in commit
4b90dcb8493552c17a811c8b1e6538dae4061f9d.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
(cherry picked from commit c82b8ef0e4f226423ddd644bfe37e6a15d070924)
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/dvbsubdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/dvbsubdec.c b/libavcodec/dvbsubdec.c index a4663d997f..08f6a9bf85 100644 --- a/libavcodec/dvbsubdec.c +++ b/libavcodec/dvbsubdec.c @@ -810,7 +810,7 @@ static void compute_default_clut(AVSubtitleRect *rect, int w, int h) list_inv[ i ] = bestv; } - count = i - 1; + count = FFMAX(i - 1, 1); for (i--; i>=0; i--) { int v = i*255/count; AV_WN32(rect->data[1] + 4*list_inv[i], RGBA(v/2,v,v/2,v)); |