1/*
2 * Copyright (c) 2020 Martin Storsjo
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21#include "libavutil/aarch64/asm.S"
22
23function ff_get_pixels_neon, export=1
24        mov             w3,  #8
251:
26        ld1             {v0.8b}, [x1], x2
27        subs            w3,  w3,  #2
28        ld1             {v1.8b}, [x1], x2
29        uxtl            v0.8h,   v0.8b
30        uxtl            v1.8h,   v1.8b
31        st1             {v0.8h, v1.8h}, [x0], #32
32        b.gt            1b
33
34        ret
35endfunc
36
37function ff_diff_pixels_neon, export=1
38        mov             w4,  #8
391:
40        ld1             {v0.8b}, [x1], x3
41        ld1             {v1.8b}, [x2], x3
42        subs            w4,  w4,  #2
43        ld1             {v2.8b}, [x1], x3
44        usubl           v0.8h,   v0.8b,   v1.8b
45        ld1             {v3.8b}, [x2], x3
46        usubl           v1.8h,   v2.8b,   v3.8b
47        st1             {v0.8h, v1.8h}, [x0], #32
48        b.gt            1b
49
50        ret
51endfunc
52