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 23function 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 391: 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 64 652: st1 {v1.4s}, [x3], #16 66 st1 {v0.4s}, [x4], #16 67 b.lt ret 68 693: 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 80ret: 81 ret 82endfunc 83