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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6147 | serge | 1 | /* |
| 2 | * ARM NEON optimised DSP functions |
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| 3 | * Copyright (c) 2008 Mans Rullgard |
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| 4 | * |
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| 5 | * This file is part of FFmpeg. |
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| 6 | * |
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| 7 | * FFmpeg is free software; you can redistribute it and/or |
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| 8 | * modify it under the terms of the GNU Lesser General Public |
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| 9 | * License as published by the Free Software Foundation; either |
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| 10 | * version 2.1 of the License, or (at your option) any later version. |
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| 11 | * |
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| 12 | * FFmpeg is distributed in the hope that it will be useful, |
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | * Lesser General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU Lesser General Public |
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| 18 | * License along with FFmpeg; if not, write to the Free Software |
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 20 | */ |
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| 21 | |||
| 22 | #include "libavutil/arm/asm.S" |
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| 23 | |||
| 24 | function ff_vorbis_inverse_coupling_neon, export=1 |
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| 25 | vmov.i32 q10, #1<<31 |
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| 26 | subs r2, r2, #4 |
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| 27 | mov r3, r0 |
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| 28 | mov r12, r1 |
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| 29 | beq 3f |
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| 30 | |||
| 31 | vld1.32 {d24-d25},[r1,:128]! |
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| 32 | vld1.32 {d22-d23},[r0,:128]! |
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| 33 | vcle.s32 q8, q12, #0 |
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| 34 | vand q9, q11, q10 |
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| 35 | veor q12, q12, q9 |
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| 36 | vand q2, q12, q8 |
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| 37 | vbic q3, q12, q8 |
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| 38 | vadd.f32 q12, q11, q2 |
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| 39 | vsub.f32 q11, q11, q3 |
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| 40 | 1: vld1.32 {d2-d3}, [r1,:128]! |
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| 41 | vld1.32 {d0-d1}, [r0,:128]! |
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| 42 | vcle.s32 q8, q1, #0 |
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| 43 | vand q9, q0, q10 |
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| 44 | veor q1, q1, q9 |
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| 45 | vst1.32 {d24-d25},[r3, :128]! |
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| 46 | vst1.32 {d22-d23},[r12,:128]! |
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| 47 | vand q2, q1, q8 |
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| 48 | vbic q3, q1, q8 |
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| 49 | vadd.f32 q1, q0, q2 |
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| 50 | vsub.f32 q0, q0, q3 |
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| 51 | subs r2, r2, #8 |
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| 52 | ble 2f |
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| 53 | vld1.32 {d24-d25},[r1,:128]! |
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| 54 | vld1.32 {d22-d23},[r0,:128]! |
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| 55 | vcle.s32 q8, q12, #0 |
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| 56 | vand q9, q11, q10 |
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| 57 | veor q12, q12, q9 |
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| 58 | vst1.32 {d2-d3}, [r3, :128]! |
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| 59 | vst1.32 {d0-d1}, [r12,:128]! |
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| 60 | vand q2, q12, q8 |
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| 61 | vbic q3, q12, q8 |
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| 62 | vadd.f32 q12, q11, q2 |
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| 63 | vsub.f32 q11, q11, q3 |
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| 64 | b 1b |
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| 65 | |||
| 66 | 2: vst1.32 {d2-d3}, [r3, :128]! |
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| 67 | vst1.32 {d0-d1}, [r12,:128]! |
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| 68 | it lt |
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| 69 | bxlt lr |
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| 70 | |||
| 71 | 3: vld1.32 {d2-d3}, [r1,:128] |
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| 72 | vld1.32 {d0-d1}, [r0,:128] |
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| 73 | vcle.s32 q8, q1, #0 |
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| 74 | vand q9, q0, q10 |
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| 75 | veor q1, q1, q9 |
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| 76 | vand q2, q1, q8 |
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| 77 | vbic q3, q1, q8 |
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| 78 | vadd.f32 q1, q0, q2 |
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| 79 | vsub.f32 q0, q0, q3 |
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| 80 | vst1.32 {d2-d3}, [r0,:128]! |
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| 81 | vst1.32 {d0-d1}, [r1,:128]! |
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| 82 | bx lr |
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| 83 | endfunc |