Commit Graph

9 Commits

Author SHA1 Message Date
Yunqing Wang
8432a1729f Add zero offset checking in SSE2 sub-pixel filter function
Skip filter at zero offset.

Change-Id: I95fc7e211869bc0ab5bcfb7ab2e3259d1c0ccf38
2011-03-08 15:22:07 -05:00
Yunqing Wang
d96ba65a23 Add prefetch before variance calculation
This improved encoding performance by 0.5% (good, speed 1) to
1.5% (good, speed 5).

Change-Id: I843d72a0d68a90b5f694adf770943e4a4618f50e
2011-02-28 11:25:55 -05:00
Yunqing Wang
0822a62f40 Modify sub-pixel filters to eliminate unnecessary calculations
In sub-pixel calculation, xoffset and yoffset mostly take some
specific values. Modified sub-pixel filter functions according to
these possible values to improve performance.

Change-Id: I83083570af8b00ff65093467914fbb97a4e9ea21
2011-01-21 13:59:27 -05:00
Jan Kratochvil
5cdc3a4c29 nasm: address labels 'rel label' vice 'wrt rip'
nasm does not support `label wrt rip', it requires `rel label'. It is
still fully compatible with yasm.

Provide nasm compatibility. No binary change by this patch with yasm on
{x86_64,i686}-fedora13-linux-gnu. Few longer opcodes with nasm on
{x86_64,i686}-fedora13-linux-gnu have been checked as safe.

Change-Id: I488773a4e930a56e43b0cc72d867ee5291215f50
2010-10-04 19:47:54 -04:00
Jan Kratochvil
e114f699f6 nasm: match instruction length (movd/movq) to parameters
nasm requires the instruction length (movd/movq) to match to its
parameters. I find it more clear to really use 64bit instructions when
we use 64bit registers in the assembly.

Provide nasm compatibility. No binary change by this patch with yasm on
{x86_64,i686}-fedora13-linux-gnu. Few longer opcodes with nasm on
{x86_64,i686}-fedora13-linux-gnu have been checked as safe.

Change-Id: Id9b1a5cdfb1bc05697e523c317a296df43d42a91
2010-10-04 23:36:29 +02:00
John Koleszar
c2140b8af1 Use WebM in copyright notice for consistency
Changes 'The VP8 project' to 'The WebM project', for consistency
with other webmproject.org repositories.

Fixes issue #97.

Change-Id: I37c13ed5fbdb9d334ceef71c6350e9febed9bbba
2010-09-09 10:01:21 -04:00
John Koleszar
94c52e4da8 cosmetics: trim trailing whitespace
When the license headers were updated, they accidentally contained
trailing whitespace, so unfortunately we have to touch all the files
again.

Change-Id: I236c05fade06589e417179c0444cb39b09e4200d
2010-06-18 13:06:11 -04:00
John Koleszar
09202d8071 LICENSE: update with latest text
Change-Id: Ieebea089095d9073b3a94932791099f614ce120c
2010-06-04 16:19:40 -04:00
John Koleszar
0ea50ce9cb Initial WebM release 2010-05-18 11:58:33 -04:00