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| author | Mans Rullgard <mans@mansr.com> | 2011-10-08 12:56:54 +0100 |
|---|---|---|
| committer | Mans Rullgard <mans@mansr.com> | 2011-10-09 13:58:17 +0100 |
| commit | 2f329db90e5d72ad383a0ba05fde3641a34ef73b (patch) | |
| tree | 874046baa9e17574ef5faa2dc64606f5fabeb39a /libavcodec/mpeg12enc.c | |
| parent | 60f10e0ad37418cc697765d85b0bc22db70f726a (diff) | |
| download | ffmpeg-2f329db90e5d72ad383a0ba05fde3641a34ef73b.tar.gz | |
mpeg12enc: use sign_extend() function
Signed-off-by: Mans Rullgard <mans@mansr.com>
Diffstat (limited to 'libavcodec/mpeg12enc.c')
| -rw-r--r-- | libavcodec/mpeg12enc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/mpeg12enc.c b/libavcodec/mpeg12enc.c index 79c46beef9..f4455be925 100644 --- a/libavcodec/mpeg12enc.c +++ b/libavcodec/mpeg12enc.c @@ -27,6 +27,7 @@ #include "avcodec.h" #include "dsputil.h" +#include "mathops.h" #include "mpegvideo.h" #include "mpeg12.h" @@ -690,8 +691,7 @@ static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code) int bit_size = f_or_b_code - 1; int range = 1 << bit_size; /* modulo encoding */ - int l= INT_BIT - 5 - bit_size; - val= (val<<l)>>l; + val = sign_extend(val, 5 + bit_size); if (val >= 0) { val--; |