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| author | Christophe Gisquet <christophe.gisquet@gmail.com> | 2012-11-25 09:10:36 +0100 |
|---|---|---|
| committer | Anton Khirnov <anton@khirnov.net> | 2013-05-10 09:31:27 +0200 |
| commit | 2c299d4165cd9653153e12270971c2368551b79e (patch) | |
| tree | 00aae479442439d42cd3bb1da07c07f2c0c629cc /libavcodec/x86/sbrdsp.asm | |
| parent | 16a4a18db089af8c432f1cdec62155000585b72c (diff) | |
| download | ffmpeg-2c299d4165cd9653153e12270971c2368551b79e.tar.gz | |
x86: sbrdsp: implement SSE2 qmf_pre_shuffle
From 253 to 51 cycles on Arrandale and Win64.
44 cycles on SandyBridge.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
Diffstat (limited to 'libavcodec/x86/sbrdsp.asm')
| -rw-r--r-- | libavcodec/x86/sbrdsp.asm | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/libavcodec/x86/sbrdsp.asm b/libavcodec/x86/sbrdsp.asm index bfc37c2a1f..36a0918473 100644 --- a/libavcodec/x86/sbrdsp.asm +++ b/libavcodec/x86/sbrdsp.asm @@ -273,3 +273,33 @@ cglobal sbr_qmf_deint_bfly, 3,5,8, v,src0,src1,vrev,c sub cq, 2*mmsize jge .loop REP_RET + +INIT_XMM sse2 +cglobal sbr_qmf_pre_shuffle, 1,4,6,z +%define OFFSET (32*4-2*mmsize) + mov r3q, OFFSET + lea r1q, [zq + (32+1)*4] + lea r2q, [zq + 64*4] + mova m5, [ps_neg] +.loop: + movu m0, [r1q] + movu m2, [r1q + mmsize] + movu m1, [zq + r3q + 4 + mmsize] + movu m3, [zq + r3q + 4] + + pxor m2, m5 + pxor m0, m5 + pshufd m2, m2, q0123 + pshufd m0, m0, q0123 + SBUTTERFLY dq, 2, 3, 4 + SBUTTERFLY dq, 0, 1, 4 + mova [r2q + 2*r3q + 0*mmsize], m2 + mova [r2q + 2*r3q + 1*mmsize], m3 + mova [r2q + 2*r3q + 2*mmsize], m0 + mova [r2q + 2*r3q + 3*mmsize], m1 + add r1q, 2*mmsize + sub r3q, 2*mmsize + jge .loop + movq m2, [zq] + movq [r2q], m2 + REP_RET |