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Scale up by 2 unfiltered

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BUG=none
TESTED=manual test with width/height set to half.
R=tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/3569004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@845 16f28f9a-4ce2-e073-06de-1de4eb20be90
This commit is contained in:
fbarchard@google.com 2013-11-07 19:26:31 +00:00
parent ed9ddc0765
commit 1428b37c2b
3 changed files with 38 additions and 2 deletions
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2
README.chromium
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@ -1,6 +1,6 @@
Name: libyuv
URL: http://code.google.com/p/libyuv/
Version: 844
Version: 845
License: BSD
License File: LICENSE

2
include/libyuv/version.h
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@ -11,6 +11,6 @@
#ifndef INCLUDE_LIBYUV_VERSION_H_ // NOLINT
#define INCLUDE_LIBYUV_VERSION_H_
#define LIBYUV_VERSION 844
#define LIBYUV_VERSION 845
#endif // INCLUDE_LIBYUV_VERSION_H_ NOLINT

36
source/scale_argb.cc
View File

@ -369,6 +369,34 @@ static void ScaleARGBFilterCols_SSSE3(uint8* dst_argb, const uint8* src_argb,
}
}
// Reads 4 pixels, duplicates them and writes 8 pixels.
// Alignment requirement: src_argb 16 byte aligned, dst_argb 16 byte aligned.
#define HAS_SCALEARGBCOLSUP2_SSE2
__declspec(naked) __declspec(align(16))
void ScaleARGBColsUp2_SSE2(uint8* dst_argb, const uint8* src_argb,
int dst_width, int /* x */, int /* dx */) {
__asm {
mov edx, [esp + 4] // dst_argb
mov eax, [esp + 8] // src_argb
mov ecx, [esp + 12] // dst_width
align 16
wloop:
movdqa xmm0, [eax]
lea eax, [eax + 16]
movdqa xmm1, xmm0
punpckldq xmm0, xmm0
punpckhdq xmm1, xmm1
sub ecx, 8
movdqa [edx], xmm0
movdqa [edx + 16], xmm1
lea edx, [edx + 32]
jg wloop
ret
}
}
#elif !defined(LIBYUV_DISABLE_X86) && \
(defined(__x86_64__) || defined(__i386__))
@ -1335,6 +1363,14 @@ static void ScaleARGBSimple(int src_width, int src_height,
#if defined(HAS_SCALEARGBCOLS_SSE2)
if (TestCpuFlag(kCpuHasSSE2)) {
ScaleARGBCols = ScaleARGBCols_SSE2;
#if defined(HAS_SCALEARGBCOLS_SSE2)
if (src_width * 2 == dst_width && IS_ALIGNED(dst_width, 8) &&
(x >> 16) == 0 &&
IS_ALIGNED(src_argb, 16) && IS_ALIGNED(src_stride, 16) &&
IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride, 16)) {
ScaleARGBCols = ScaleARGBColsUp2_SSE2;
}
#endif
}
#endif