1/* 2 * Copyright (c) 2017 Matthieu Bouron <matthieu.bouron gmail.com> 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_resample_common_apply_filter_x4_float_neon, export=1 24 movi v0.4S, #0 // accumulator 251: ld1 {v1.4S}, [x1], #16 // src[0..3] 26 ld1 {v2.4S}, [x2], #16 // filter[0..3] 27 fmla v0.4S, v1.4S, v2.4S // accumulator += src[0..3] * filter[0..3] 28 subs w3, w3, #4 // filter_length -= 4 29 b.gt 1b // loop until filter_length 30 faddp v0.4S, v0.4S, v0.4S // pair adding of the 4x32-bit accumulated values 31 faddp v0.4S, v0.4S, v0.4S // pair adding of the 4x32-bit accumulated values 32 st1 {v0.S}[0], [x0], #4 // write accumulator 33 ret 34endfunc 35 36function ff_resample_common_apply_filter_x8_float_neon, export=1 37 movi v0.4S, #0 // accumulator 381: ld1 {v1.4S}, [x1], #16 // src[0..3] 39 ld1 {v2.4S}, [x2], #16 // filter[0..3] 40 ld1 {v3.4S}, [x1], #16 // src[4..7] 41 ld1 {v4.4S}, [x2], #16 // filter[4..7] 42 fmla v0.4S, v1.4S, v2.4S // accumulator += src[0..3] * filter[0..3] 43 fmla v0.4S, v3.4S, v4.4S // accumulator += src[4..7] * filter[4..7] 44 subs w3, w3, #8 // filter_length -= 8 45 b.gt 1b // loop until filter_length 46 faddp v0.4S, v0.4S, v0.4S // pair adding of the 4x32-bit accumulated values 47 faddp v0.4S, v0.4S, v0.4S // pair adding of the 4x32-bit accumulated values 48 st1 {v0.S}[0], [x0], #4 // write accumulator 49 ret 50endfunc 51 52function ff_resample_common_apply_filter_x4_s16_neon, export=1 53 movi v0.4S, #0 // accumulator 541: ld1 {v1.4H}, [x1], #8 // src[0..3] 55 ld1 {v2.4H}, [x2], #8 // filter[0..3] 56 smlal v0.4S, v1.4H, v2.4H // accumulator += src[0..3] * filter[0..3] 57 subs w3, w3, #4 // filter_length -= 4 58 b.gt 1b // loop until filter_length 59 addp v0.4S, v0.4S, v0.4S // pair adding of the 4x32-bit accumulated values 60 addp v0.4S, v0.4S, v0.4S // pair adding of the 4x32-bit accumulated values 61 st1 {v0.S}[0], [x0], #4 // write accumulator 62 ret 63endfunc 64 65function ff_resample_common_apply_filter_x8_s16_neon, export=1 66 movi v0.4S, #0 // accumulator 671: ld1 {v1.8H}, [x1], #16 // src[0..7] 68 ld1 {v2.8H}, [x2], #16 // filter[0..7] 69 smlal v0.4S, v1.4H, v2.4H // accumulator += src[0..3] * filter[0..3] 70 smlal2 v0.4S, v1.8H, v2.8H // accumulator += src[4..7] * filter[4..7] 71 subs w3, w3, #8 // filter_length -= 8 72 b.gt 1b // loop until filter_length 73 addp v0.4S, v0.4S, v0.4S // pair adding of the 4x32-bit accumulated values 74 addp v0.4S, v0.4S, v0.4S // pair adding of the 4x32-bit accumulated values 75 st1 {v0.S}[0], [x0], #4 // write accumulator 76 ret 77endfunc 78