| /* |
| * Copyright (c) 2011 Mans Rullgard <mans@mansr.com> |
| * Copyright (c) 2024 Geoff Hill <geoff@geoffhill.org> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 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 General Public License for more details. |
| * |
| * You should have received a copy of the GNU 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_ac3_exponent_min_neon, export=1 |
| cbz w1, 3f |
| 1: ld1 {v0.16b}, [x0] |
| mov w3, w1 |
| add x4, x0, #256 |
| 2: ld1 {v1.16b}, [x4] |
| umin v0.16b, v0.16b, v1.16b |
| add x4, x4, #256 |
| subs w3, w3, #1 |
| b.gt 2b |
| st1 {v0.16b}, [x0], #16 |
| subs w2, w2, #16 |
| b.gt 1b |
| 3: ret |
| endfunc |
| |
| function ff_ac3_extract_exponents_neon, export=1 |
| movi v1.4s, #8 |
| 1: ld1 {v0.4s}, [x1], #16 |
| abs v0.4s, v0.4s |
| clz v0.4s, v0.4s |
| sub v0.4s, v0.4s, v1.4s |
| xtn v0.4h, v0.4s |
| xtn v0.8b, v0.8h |
| st1 {v0.s}[0], [x0], #4 |
| subs w2, w2, #4 |
| b.gt 1b |
| ret |
| endfunc |
| |
| function ff_float_to_fixed24_neon, export=1 |
| 1: ld1 {v0.4s, v1.4s}, [x1], #32 |
| fcvtzs v0.4s, v0.4s, #24 |
| ld1 {v2.4s, v3.4s}, [x1], #32 |
| fcvtzs v1.4s, v1.4s, #24 |
| fcvtzs v2.4s, v2.4s, #24 |
| st1 {v0.4s, v1.4s}, [x0], #32 |
| fcvtzs v3.4s, v3.4s, #24 |
| st1 {v2.4s, v3.4s}, [x0], #32 |
| subs w2, w2, #16 |
| b.ne 1b |
| ret |
| endfunc |
| |
| function ff_ac3_sum_square_butterfly_int32_neon, export=1 |
| movi v0.2d, #0 |
| movi v1.2d, #0 |
| movi v2.2d, #0 |
| movi v3.2d, #0 |
| 1: ld1 {v4.2s}, [x1], #8 |
| ld1 {v5.2s}, [x2], #8 |
| add v6.2s, v4.2s, v5.2s |
| sub v7.2s, v4.2s, v5.2s |
| smlal v0.2d, v4.2s, v4.2s |
| smlal v1.2d, v5.2s, v5.2s |
| smlal v2.2d, v6.2s, v6.2s |
| smlal v3.2d, v7.2s, v7.2s |
| subs w3, w3, #2 |
| b.gt 1b |
| addp d0, v0.2d |
| addp d1, v1.2d |
| addp d2, v2.2d |
| addp d3, v3.2d |
| st1 {v0.1d-v3.1d}, [x0] |
| ret |
| endfunc |
| |
| function ff_ac3_sum_square_butterfly_float_neon, export=1 |
| movi v0.4s, #0 |
| movi v1.4s, #0 |
| movi v2.4s, #0 |
| movi v3.4s, #0 |
| 1: ld1 {v30.4s}, [x1], #16 |
| ld1 {v31.4s}, [x2], #16 |
| fadd v16.4s, v30.4s, v31.4s |
| fsub v17.4s, v30.4s, v31.4s |
| fmla v0.4s, v30.4s, v30.4s |
| fmla v1.4s, v31.4s, v31.4s |
| fmla v2.4s, v16.4s, v16.4s |
| fmla v3.4s, v17.4s, v17.4s |
| subs w3, w3, #4 |
| b.gt 1b |
| faddp v0.4s, v0.4s, v1.4s |
| faddp v2.4s, v2.4s, v3.4s |
| faddp v0.4s, v0.4s, v2.4s |
| st1 {v0.4s}, [x0] |
| ret |
| endfunc |
