09c2d08c
 Hu Chunming
arm交付版
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/*
* Copyright (c) 2020 Martin Storsjo
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/arm/asm.S"
.macro vld1_8 dst, src, incr, aligned
.if \aligned
vld1.8 {\dst}, [\src, :64], \incr
.else
vld1.8 {\dst}, [\src], \incr
.endif
.endm
.macro get_pixels suffix, aligned
function ff_get_pixels\suffix\()_neon, export=1
mov r3, #8
1:
vld1_8 d0, r1, r2, \aligned
subs r3, r3, #2
vld1_8 d2, r1, r2, \aligned
vmovl.u8 q0, d0
vmovl.u8 q1, d2
vst1.16 {q0, q1}, [r0, :128]!
bgt 1b
bx lr
endfunc
.endm
get_pixels , aligned=1
get_pixels _unaligned, aligned=0
.macro diff_pixels suffix, aligned=0
function ff_diff_pixels\suffix\()_neon, export=1
mov r12, #8
1:
vld1_8 d0, r1, r3, \aligned
vld1_8 d1, r2, r3, \aligned
subs r12, r12, #2
vld1_8 d2, r1, r3, \aligned
vsubl.u8 q0, d0, d1
vld1_8 d3, r2, r3, \aligned
vsubl.u8 q1, d2, d3
vst1.16 {q0, q1}, [r0]!
bgt 1b
bx lr
endfunc
.endm
diff_pixels , aligned=1
diff_pixels _unaligned, aligned=0
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