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| author | Michael Niedermayer <michaelni@gmx.at> | 2011-10-10 03:41:49 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2011-10-10 03:50:58 +0200 |
| commit | 0a23067ab41326dfa1da41d18923ea8547a51ff5 (patch) | |
| tree | c3a964ea639441d00fafffcba296b5ae79a0bd2c /libavcodec/mpeg12.c | |
| parent | 028a79c1f142f9903c238846cc565edcef2d3802 (diff) | |
| parent | 581810f5024dbb9df8e794dc0f5beac30d3a5fd4 (diff) | |
Merge remote-tracking branch 'qatar/master'
* qatar/master:
mpeg4dec: use unsigned type for startcode in ff_mpeg4_decode_picture_header
mpeg124: use sign_extend() function
ac3dec: use get_sbits() instead of manually sign-extending
4xm: fix signed overflow
wmavoice: fix a signed overflow
mpegvideo_enc: fix a signed overflow
crc: fix signed overflow
fate: run avconv with -nostats flag
avtools: add -v as alias for -loglevel
avconv: always print stats with AV_LOG_INFO
doc/avconv: add forgotten output/per-stream info to -filter
avconv: add -stats option to enable/disable printing encoding progress
avconv: in output_packet() don't set decoded_data_size for video.
avconv: remove pointless always true condition
avconv: factorize common code in transcode_init()
zmbv: remove memcpy() of decoded frame
mpeg12enc: use sign_extend() function
h264pred: use unsigned types for pixel values, fix signed overflows
h264: fix signed overflows in x*0x01010101 expressions
h264pred: remove unused variables
Conflicts:
avconv.c
tests/fate-run.sh
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/mpeg12.c')
| -rw-r--r-- | libavcodec/mpeg12.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/libavcodec/mpeg12.c b/libavcodec/mpeg12.c index 341cad7a4b..0575a976f0 100644 --- a/libavcodec/mpeg12.c +++ b/libavcodec/mpeg12.c @@ -55,7 +55,7 @@ static VLC mv_vlc; /* as H.263, but only 17 codes */ static int mpeg_decode_motion(MpegEncContext *s, int fcode, int pred) { - int code, sign, val, l, shift; + int code, sign, val, shift; code = get_vlc2(&s->gb, mv_vlc.table, MV_VLC_BITS, 2); if (code == 0) { @@ -78,9 +78,7 @@ static int mpeg_decode_motion(MpegEncContext *s, int fcode, int pred) val += pred; /* modulo decoding */ - l = INT_BIT - 5 - shift; - val = (val << l) >> l; - return val; + return sign_extend(val, 5 + shift); } static inline int mpeg1_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n) |