Changeset 11774169 in ffmpeg

Timestamp:

Apr 6, 2013, 1:52:42 PM (12 years ago)

Author:

Michael Niedermayer <michaelni@gmx.at>

Branches:

master

Children:

21f4fc2e

Parents:

f4ac8022

git-author:

Christophe Gisquet <christophe.gisquet@gmail.com> (04/06/13 10:52:13)

git-committer:

Michael Niedermayer <michaelni@gmx.at> (04/06/13 13:52:42)

Message:

sbrdsp: unroll and use integer operations

This patch can be controversial, by assuming floats are IEEE-754 and
particular behaviour of the FPU will get in the way.
Timing on Arrandale and Win32 (thus, x87 FPU is used in the reference).

sbr_qmf_pre_shuffle_c: 115 to 76
sbr_neg_odd_64_c: 84 to 55
sbr_qmf_post_shuffle_c: 112 to 83

Signed-off-by: Michael Niedermayer <​michaelni@gmx.at>

(No files)