repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * Copyright (c) 2008 Mans Rullgard <mans@mansr.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 | ||
| 23 | function ff_vorbis_inverse_coupling_neon, export=1 | |
| 24 | movi v20.4s, #1<<7, lsl #24 | |
| 25 | subs x2, x2, #4 | |
| 26 | mov x3, x0 | |
| 27 | mov x4, x1 | |
| 28 | b.eq 3f | |
| 29 | ||
| 30 | ld1 {v7.4s}, [x1], #16 | |
| 31 | ld1 {v6.4s}, [x0], #16 | |
| 32 | cmle v4.4s, v7.4s, #0 | |
| 33 | and v5.16b, v6.16b, v20.16b | |
| 34 | eor v7.16b, v7.16b, v5.16b | |
| 35 | and v2.16b, v7.16b, v4.16b | |
| 36 | bic v3.16b, v7.16b, v4.16b | |
| 37 | fadd v7.4s, v6.4s, v2.4s | |
| 38 | fsub v6.4s, v6.4s, v3.4s | |
| 39 | 1: ld1 {v1.4s}, [x1], #16 | |
| 40 | ld1 {v0.4s}, [x0], #16 | |
| 41 | cmle v4.4s, v1.4s, #0 | |
| 42 | and v5.16b, v0.16b, v20.16b | |
| 43 | eor v1.16b, v1.16b, v5.16b | |
| 44 | st1 {v7.4s}, [x3], #16 | |
| 45 | st1 {v6.4s}, [x4], #16 | |
| 46 | and v2.16b, v1.16b, v4.16b | |
| 47 | bic v3.16b, v1.16b, v4.16b | |
| 48 | fadd v1.4s, v0.4s, v2.4s | |
| 49 | fsub v0.4s, v0.4s, v3.4s | |
| 50 | subs x2, x2, #8 | |
| 51 | b.le 2f | |
| 52 | ld1 {v7.4s}, [x1], #16 | |
| 53 | ld1 {v6.4s}, [x0], #16 | |
| 54 | cmle v4.4s, v7.4s, #0 | |
| 55 | and v5.16b, v6.16b, v20.16b | |
| 56 | eor v7.16b, v7.16b, v5.16b | |
| 57 | st1 {v1.4s}, [x3], #16 | |
| 58 | st1 {v0.4s}, [x4], #16 | |
| 59 | and v2.16b, v7.16b, v4.16b | |
| 60 | bic v3.16b, v7.16b, v4.16b | |
| 61 | fadd v7.4s, v6.4s, v2.4s | |
| 62 | fsub v6.4s, v6.4s, v3.4s | |
| 63 | b 1b | |
| 64 | ||
| 65 | 2: st1 {v1.4s}, [x3], #16 | |
| 66 | st1 {v0.4s}, [x4], #16 | |
| 67 | b.lt ret | |
| 68 | ||
| 69 | 3: ld1 {v1.4s}, [x1] | |
| 70 | ld1 {v0.4s}, [x0] | |
| 71 | cmle v4.4s, v1.4s, #0 | |
| 72 | and v5.16b, v0.16b, v20.16b | |
| 73 | eor v1.16b, v1.16b, v5.16b | |
| 74 | and v2.16b, v1.16b, v4.16b | |
| 75 | bic v3.16b, v1.16b, v4.16b | |
| 76 | fadd v1.4s, v0.4s, v2.4s | |
| 77 | fsub v0.4s, v0.4s, v3.4s | |
| 78 | st1 {v1.4s}, [x0], #16 | |
| 79 | st1 {v0.4s}, [x1], #16 | |
| 80 | ret: | |
| 81 | ret | |
| 82 | endfunc |