blob: 6a6c77aca81c8642f05d670e074d6b821c03a3fb
| 1 | /* |
| 2 | * Copyright (c) 2010 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/arm/asm.S" |
| 22 | |
| 23 | function ff_dca_lfe_fir_neon, export=1 |
| 24 | push {r4-r6,lr} |
| 25 | |
| 26 | add r4, r0, r3, lsl #2 @ out2 |
| 27 | add r5, r2, #256*4-16 @ cf1 |
| 28 | sub r1, r1, #12 |
| 29 | cmp r3, #32 |
| 30 | ite eq |
| 31 | moveq r6, #256/32 |
| 32 | movne r6, #256/64 |
| 33 | NOVFP vldr s0, [sp, #16] @ scale |
| 34 | mov lr, #-16 |
| 35 | 1: |
| 36 | vmov.f32 q2, #0.0 @ v0 |
| 37 | vmov.f32 q3, #0.0 @ v1 |
| 38 | mov r12, r6 |
| 39 | 2: |
| 40 | vld1.32 {q8}, [r2,:128]! @ cf0 |
| 41 | vld1.32 {q9}, [r5,:128], lr @ cf1 |
| 42 | vld1.32 {q1}, [r1], lr @ in |
| 43 | subs r12, r12, #4 |
| 44 | vrev64.32 q10, q8 |
| 45 | vmla.f32 q3, q1, q9 |
| 46 | vmla.f32 d4, d2, d21 |
| 47 | vmla.f32 d5, d3, d20 |
| 48 | bne 2b |
| 49 | |
| 50 | add r1, r1, r6, lsl #2 |
| 51 | subs r3, r3, #1 |
| 52 | vadd.f32 d4, d4, d5 |
| 53 | vadd.f32 d6, d6, d7 |
| 54 | vpadd.f32 d4, d4, d6 |
| 55 | vmul.f32 d5, d4, d0[0] |
| 56 | vst1.32 {d5[0]}, [r0,:32]! |
| 57 | vst1.32 {d5[1]}, [r4,:32]! |
| 58 | bne 1b |
| 59 | |
| 60 | pop {r4-r6,pc} |
| 61 | endfunc |
| 62 |