repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * ARM NEON optimised DSP functions | |
| 3 | * Copyright (c) 2008 Mans Rullgard <mans@mansr.com> | |
| 4 | * | |
| 5 | * This file is part of FFmpeg. | |
| 6 | * | |
| 7 | * FFmpeg is free software; you can redistribute it and/or | |
| 8 | * modify it under the terms of the GNU Lesser General Public | |
| 9 | * License as published by the Free Software Foundation; either | |
| 10 | * version 2.1 of the License, or (at your option) any later version. | |
| 11 | * | |
| 12 | * FFmpeg is distributed in the hope that it will be useful, | |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 | * Lesser General Public License for more details. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU Lesser General Public | |
| 18 | * License along with FFmpeg; if not, write to the Free Software | |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 20 | */ | |
| 21 | ||
| 22 | #include "libavutil/arm/asm.S" | |
| 23 | ||
| 24 | function ff_vorbis_inverse_coupling_neon, export=1 | |
| 25 | vmov.i32 q10, #1<<31 | |
| 26 | subs r2, r2, #4 | |
| 27 | mov r3, r0 | |
| 28 | mov r12, r1 | |
| 29 | beq 3f | |
| 30 | ||
| 31 | vld1.32 {d24-d25},[r1,:128]! | |
| 32 | vld1.32 {d22-d23},[r0,:128]! | |
| 33 | vcle.s32 q8, q12, #0 | |
| 34 | vand q9, q11, q10 | |
| 35 | veor q12, q12, q9 | |
| 36 | vand q2, q12, q8 | |
| 37 | vbic q3, q12, q8 | |
| 38 | vadd.f32 q12, q11, q2 | |
| 39 | vsub.f32 q11, q11, q3 | |
| 40 | 1: vld1.32 {d2-d3}, [r1,:128]! | |
| 41 | vld1.32 {d0-d1}, [r0,:128]! | |
| 42 | vcle.s32 q8, q1, #0 | |
| 43 | vand q9, q0, q10 | |
| 44 | veor q1, q1, q9 | |
| 45 | vst1.32 {d24-d25},[r3, :128]! | |
| 46 | vst1.32 {d22-d23},[r12,:128]! | |
| 47 | vand q2, q1, q8 | |
| 48 | vbic q3, q1, q8 | |
| 49 | vadd.f32 q1, q0, q2 | |
| 50 | vsub.f32 q0, q0, q3 | |
| 51 | subs r2, r2, #8 | |
| 52 | ble 2f | |
| 53 | vld1.32 {d24-d25},[r1,:128]! | |
| 54 | vld1.32 {d22-d23},[r0,:128]! | |
| 55 | vcle.s32 q8, q12, #0 | |
| 56 | vand q9, q11, q10 | |
| 57 | veor q12, q12, q9 | |
| 58 | vst1.32 {d2-d3}, [r3, :128]! | |
| 59 | vst1.32 {d0-d1}, [r12,:128]! | |
| 60 | vand q2, q12, q8 | |
| 61 | vbic q3, q12, q8 | |
| 62 | vadd.f32 q12, q11, q2 | |
| 63 | vsub.f32 q11, q11, q3 | |
| 64 | b 1b | |
| 65 | ||
| 66 | 2: vst1.32 {d2-d3}, [r3, :128]! | |
| 67 | vst1.32 {d0-d1}, [r12,:128]! | |
| 68 | it lt | |
| 69 | bxlt lr | |
| 70 | ||
| 71 | 3: vld1.32 {d2-d3}, [r1,:128] | |
| 72 | vld1.32 {d0-d1}, [r0,:128] | |
| 73 | vcle.s32 q8, q1, #0 | |
| 74 | vand q9, q0, q10 | |
| 75 | veor q1, q1, q9 | |
| 76 | vand q2, q1, q8 | |
| 77 | vbic q3, q1, q8 | |
| 78 | vadd.f32 q1, q0, q2 | |
| 79 | vsub.f32 q0, q0, q3 | |
| 80 | vst1.32 {d2-d3}, [r0,:128]! | |
| 81 | vst1.32 {d0-d1}, [r1,:128]! | |
| 82 | bx lr | |
| 83 | endfunc |