mirror of
https://chromium.googlesource.com/libyuv/libyuv
synced 2025-12-07 17:26:49 +08:00
02e48bf72b
BUG=none TEST=none Review URL: https://webrtc-codereview.appspot.com/887006 git-svn-id: http://libyuv.googlecode.com/svn/trunk@424 16f28f9a-4ce2-e073-06de-1de4eb20be90
62 lines
1.5 KiB
NASM
62 lines
1.5 KiB
NASM
;*
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;* Copyright 2012 The LibYuv Project Authors. All rights reserved.
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;*
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;* Use of this source code is governed by a BSD-style license
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;* that can be found in the LICENSE file in the root of the source
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;* tree. An additional intellectual property rights grant can be found
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;* in the file PATENTS. All contributing project authors may
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;* be found in the AUTHORS file in the root of the source tree.
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;*
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%include "x86inc.asm"
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SECTION .text
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; void YUY2ToYRow_SSE2(const uint8* src_yuy2,
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; uint8* dst_y, int pix);
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%macro YUY2TOYROW 2-3
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cglobal %1ToYRow%3, 3, 3, 3, src_yuy2, dst_y, pix
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%ifidn %1,YUY2
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pcmpeqb m2, m2 ; generate mask 0x00ff00ff
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psrlw m2, 8
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%endif
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ALIGN 16
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.convertloop:
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mov%2 m0, [src_yuy2q]
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mov%2 m1, [src_yuy2q + mmsize]
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lea src_yuy2q, [src_yuy2q + mmsize * 2]
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%ifidn %1,YUY2
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pand m0, m2 ; YUY2 even bytes are Y
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pand m1, m2
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%else
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psrlw m0, 8 ; UYVY odd bytes are Y
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psrlw m1, 8
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%endif
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packuswb m0, m1
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sub pixd, mmsize
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mov%2 [dst_yq], m0
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lea dst_yq, [dst_yq + mmsize]
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jg .convertloop
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RET
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%endmacro
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; TODO(fbarchard): Remove MMX when SSE2 is required.
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INIT_MMX MMX
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YUY2TOYROW YUY2,a,
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YUY2TOYROW YUY2,u,_Unaligned
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YUY2TOYROW UYVY,a,
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YUY2TOYROW UYVY,u,_Unaligned
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INIT_XMM SSE2
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YUY2TOYROW YUY2,a,
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YUY2TOYROW YUY2,u,_Unaligned
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YUY2TOYROW UYVY,a,
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YUY2TOYROW UYVY,u,_Unaligned
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INIT_YMM AVX2
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YUY2TOYROW YUY2,a,
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YUY2TOYROW YUY2,u,_Unaligned
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YUY2TOYROW UYVY,a,
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YUY2TOYROW UYVY,u,_Unaligned
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