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 23 function ff_get_pixels_neon, export=1 24 mov w3, #8 25 1: 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 35 endfunc 36 37 function ff_diff_pixels_neon, export=1 38 mov w4, #8 39 1: 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 51 endfunc 52