| /* |
| * Copyright (c) 2017 Matthieu Bouron <matthieu.bouron gmail.com> |
| * |
| * 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/aarch64/asm.S" |
| |
| function ff_resample_common_apply_filter_x4_float_neon, export=1 |
| movi v0.4S, #0 // accumulator |
| 1: ld1 {v1.4S}, [x1], #16 // src[0..3] |
| ld1 {v2.4S}, [x2], #16 // filter[0..3] |
| fmla v0.4S, v1.4S, v2.4S // accumulator += src[0..3] * filter[0..3] |
| subs w3, w3, #4 // filter_length -= 4 |
| b.gt 1b // loop until filter_length |
| faddp v0.4S, v0.4S, v0.4S // pair adding of the 4x32-bit accumulated values |
| faddp v0.4S, v0.4S, v0.4S // pair adding of the 4x32-bit accumulated values |
| st1 {v0.S}[0], [x0], #4 // write accumulator |
| ret |
| endfunc |
| |
| function ff_resample_common_apply_filter_x8_float_neon, export=1 |
| movi v0.4S, #0 // accumulator |
| 1: ld1 {v1.4S}, [x1], #16 // src[0..3] |
| ld1 {v2.4S}, [x2], #16 // filter[0..3] |
| ld1 {v3.4S}, [x1], #16 // src[4..7] |
| ld1 {v4.4S}, [x2], #16 // filter[4..7] |
| fmla v0.4S, v1.4S, v2.4S // accumulator += src[0..3] * filter[0..3] |
| fmla v0.4S, v3.4S, v4.4S // accumulator += src[4..7] * filter[4..7] |
| subs w3, w3, #8 // filter_length -= 8 |
| b.gt 1b // loop until filter_length |
| faddp v0.4S, v0.4S, v0.4S // pair adding of the 4x32-bit accumulated values |
| faddp v0.4S, v0.4S, v0.4S // pair adding of the 4x32-bit accumulated values |
| st1 {v0.S}[0], [x0], #4 // write accumulator |
| ret |
| endfunc |
| |
| function ff_resample_common_apply_filter_x4_s16_neon, export=1 |
| movi v0.4S, #0 // accumulator |
| 1: ld1 {v1.4H}, [x1], #8 // src[0..3] |
| ld1 {v2.4H}, [x2], #8 // filter[0..3] |
| smlal v0.4S, v1.4H, v2.4H // accumulator += src[0..3] * filter[0..3] |
| subs w3, w3, #4 // filter_length -= 4 |
| b.gt 1b // loop until filter_length |
| addp v0.4S, v0.4S, v0.4S // pair adding of the 4x32-bit accumulated values |
| addp v0.4S, v0.4S, v0.4S // pair adding of the 4x32-bit accumulated values |
| st1 {v0.S}[0], [x0], #4 // write accumulator |
| ret |
| endfunc |
| |
| function ff_resample_common_apply_filter_x8_s16_neon, export=1 |
| movi v0.4S, #0 // accumulator |
| 1: ld1 {v1.8H}, [x1], #16 // src[0..7] |
| ld1 {v2.8H}, [x2], #16 // filter[0..7] |
| smlal v0.4S, v1.4H, v2.4H // accumulator += src[0..3] * filter[0..3] |
| smlal2 v0.4S, v1.8H, v2.8H // accumulator += src[4..7] * filter[4..7] |
| subs w3, w3, #8 // filter_length -= 8 |
| b.gt 1b // loop until filter_length |
| addp v0.4S, v0.4S, v0.4S // pair adding of the 4x32-bit accumulated values |
| addp v0.4S, v0.4S, v0.4S // pair adding of the 4x32-bit accumulated values |
| st1 {v0.S}[0], [x0], #4 // write accumulator |
| ret |
| endfunc |
