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| author | Michael Niedermayer <michael@niedermayer.cc> | 2016-01-10 17:43:56 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2016-01-15 16:00:31 +0100 |
| commit | 3820c6a979cad16ad993580af80b5968b87ea382 (patch) | |
| tree | 0cf668596b483d39e385bc0c5349f6938e5637ed | |
| parent | 7cfea0d41cb05f099c2456f7b0797382adda7756 (diff) | |
| download | ffmpeg-3820c6a979cad16ad993580af80b5968b87ea382.tar.gz | |
avcodec/dvdec: Fix "left shift of negative value -254"
Fixes: dvdec_left_shift.avi
Found-by: Piotr Bandurski <ami_stuff@o2.pl>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 93ac72a98dff592ffc174cfb36a8975dfbf145ae)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/dvdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/dvdec.c b/libavcodec/dvdec.c index fbd6bf504b..0f9edf0dae 100644 --- a/libavcodec/dvdec.c +++ b/libavcodec/dvdec.c @@ -333,7 +333,7 @@ static int dv_decode_video_segment(AVCodecContext *avctx, void *arg) dct_mode * 22 * 64 + (quant + ff_dv_quant_offset[class1]) * 64]; } - dc = dc << 2; + dc = dc * 4; /* convert to unsigned because 128 is not added in the * standard IDCT */ dc += 1024; |