coffee/libyuv
1
0
Fork 0
mirror of https://chromium.googlesource.com/libyuv/libyuv synced 2026-01-01 03:12:16 +08:00
Code Issues Packages Projects Releases Wiki Activity

Improved polynomial for avx2 using vpmovzxbd and remove movdqa.

Browse Source 
BUG=265
TESTED=libyuvTest.TestARGBPolynomial
R=jingning@google.com, ryanpetrie@google.com

Review URL: https://webrtc-codereview.appspot.com/2184005

git-svn-id: http://libyuv.googlecode.com/svn/trunk@781 16f28f9a-4ce2-e073-06de-1de4eb20be90
This commit is contained in:
fbarchard@google.com 2013-09-09 18:14:03 +00:00
parent 6da76f3b34
commit 5442018d64
3 changed files with 17 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
README.chromium
View File

@ -1,6 +1,6 @@
Name: libyuv
URL: http://code.google.com/p/libyuv/
Version: 780
Version: 781
License: BSD
License File: LICENSE

2
include/libyuv/version.h
View File

@ -11,6 +11,6 @@
#ifndef INCLUDE_LIBYUV_VERSION_H_ // NOLINT
#define INCLUDE_LIBYUV_VERSION_H_
#define LIBYUV_VERSION 780
#define LIBYUV_VERSION 781
#endif // INCLUDE_LIBYUV_VERSION_H_ NOLINT

42
source/row_win.cc
View File

@ -6787,6 +6787,7 @@ void ARGBPolynomialRow_SSE2(const uint8* src_argb,
align 16
convertloop:
// (slow) vpmovzxbd xmm0, dword ptr [eax] // BGRA pixel
movd xmm0, [eax] // BGRA
lea eax, [eax + 4]
punpcklbw xmm0, xmm3
@ -6833,39 +6834,26 @@ void ARGBPolynomialRow_AVX2(const uint8* src_argb,
mov eax, [esp + 4] /* src_argb */
mov edx, [esp + 8] /* dst_argb */
mov ecx, [esp + 16] /* width */
vpxor ymm3, ymm3, ymm3 // 0 constant for zero extending bytes to ints.
align 16
convertloop:
vmovq xmm0, qword ptr [eax] // 2 BGRA pixels
vpmovzxbd ymm0, qword ptr [eax] // 2 BGRA pixels
lea eax, [eax + 8]
// vpmovzxbd ymm0, ymm0
// TODO(fbarchard): Consider vex256 to avoid vpermq.
vpunpcklbw xmm0, xmm0, xmm3 // b0g0r0a0_b0g0r0a0_00000000_00000000
vpermq ymm0, ymm0, 0xd8 // b0g0r0a0_00000000_b0g0r0a0_00000000
vpunpcklwd ymm0, ymm0, ymm3 // b000g000_r000a000_b000g000_r000a000
vcvtdq2ps ymm0, ymm0 // 8 floats
vmovdqa ymm1, ymm0 // X
vmulps ymm0, ymm0, ymm5 // C1 * X
vaddps ymm0, ymm0, ymm4 // result = C0 + C1 * X
vmovdqa ymm2, ymm1
vmulps ymm2, ymm2, ymm1 // X * X
vmulps ymm1, ymm1, ymm2 // X * X * X
vcvtdq2ps ymm0, ymm0 // X 8 floats
vmulps ymm2, ymm0, ymm0 // X * X
vmulps ymm3, ymm0, ymm7 // C3 * X
vmulps ymm1, ymm0, ymm5 // C1 * X
vmulps ymm3, ymm2, ymm3 // C3 * X * X * X
vmulps ymm2, ymm2, ymm6 // C2 * X * X
vmulps ymm1, ymm1, ymm7 // C3 * X * X * X
vaddps ymm0, ymm0, ymm2 // result += C2 * X * X
vaddps ymm0, ymm0, ymm1 // result += C3 * X * X * X
vcvttps2dq ymm0, ymm0
// vpmovzxdb ymm0, ymm0 // b000g000_r000a000_b000g000_r000a000
vpackusdw ymm0, ymm0, ymm3 // b0g0r0a0_00000000_b0g0r0a0_00000000
vpermq ymm0, ymm0, 0xd8 // b0g0r0a0_b0g0r0a0_00000000_00000000
vpackuswb xmm0, xmm0, xmm3 // b0g0r0a0_b0g0r0a0_00000000_00000000
vaddps ymm1, ymm1, ymm4 // result = C0 + C1 * X
vaddps ymm1, ymm1, ymm3 // result += C3 * X * X * X
vaddps ymm1, ymm1, ymm2 // result += C2 * X * X
vcvttps2dq ymm1, ymm1
vpackusdw ymm1, ymm1, ymm1 // b0g0r0a0_00000000_b0g0r0a0_00000000
vpermq ymm1, ymm1, 0xd8 // b0g0r0a0_b0g0r0a0_00000000_00000000
vpackuswb xmm1, xmm1, xmm1 // bgrabgra_00000000_00000000_00000000
sub ecx, 2
vmovq qword ptr [edx], xmm0
vmovq qword ptr [edx], xmm1
lea edx, [edx + 8]
jg convertloop
vzeroupper