| /* |
| * Copyright (c) 2008 Mans Rullgard <mans@mansr.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_vorbis_inverse_coupling_neon, export=1 |
| movi v20.4s, #1<<7, lsl #24 |
| subs x2, x2, #4 |
| mov x3, x0 |
| mov x4, x1 |
| b.eq 3f |
| |
| ld1 {v7.4s}, [x1], #16 |
| ld1 {v6.4s}, [x0], #16 |
| cmle v4.4s, v7.4s, #0 |
| and v5.16b, v6.16b, v20.16b |
| eor v7.16b, v7.16b, v5.16b |
| and v2.16b, v7.16b, v4.16b |
| bic v3.16b, v7.16b, v4.16b |
| fadd v7.4s, v6.4s, v2.4s |
| fsub v6.4s, v6.4s, v3.4s |
| 1: ld1 {v1.4s}, [x1], #16 |
| ld1 {v0.4s}, [x0], #16 |
| cmle v4.4s, v1.4s, #0 |
| and v5.16b, v0.16b, v20.16b |
| eor v1.16b, v1.16b, v5.16b |
| st1 {v7.4s}, [x3], #16 |
| st1 {v6.4s}, [x4], #16 |
| and v2.16b, v1.16b, v4.16b |
| bic v3.16b, v1.16b, v4.16b |
| fadd v1.4s, v0.4s, v2.4s |
| fsub v0.4s, v0.4s, v3.4s |
| subs x2, x2, #8 |
| b.le 2f |
| ld1 {v7.4s}, [x1], #16 |
| ld1 {v6.4s}, [x0], #16 |
| cmle v4.4s, v7.4s, #0 |
| and v5.16b, v6.16b, v20.16b |
| eor v7.16b, v7.16b, v5.16b |
| st1 {v1.4s}, [x3], #16 |
| st1 {v0.4s}, [x4], #16 |
| and v2.16b, v7.16b, v4.16b |
| bic v3.16b, v7.16b, v4.16b |
| fadd v7.4s, v6.4s, v2.4s |
| fsub v6.4s, v6.4s, v3.4s |
| b 1b |
| |
| 2: st1 {v1.4s}, [x3], #16 |
| st1 {v0.4s}, [x4], #16 |
| b.lt ret |
| |
| 3: ld1 {v1.4s}, [x1] |
| ld1 {v0.4s}, [x0] |
| cmle v4.4s, v1.4s, #0 |
| and v5.16b, v0.16b, v20.16b |
| eor v1.16b, v1.16b, v5.16b |
| and v2.16b, v1.16b, v4.16b |
| bic v3.16b, v1.16b, v4.16b |
| fadd v1.4s, v0.4s, v2.4s |
| fsub v0.4s, v0.4s, v3.4s |
| st1 {v1.4s}, [x0], #16 |
| st1 {v0.4s}, [x1], #16 |
| ret: |
| ret |
| endfunc |
