| /* |
| * Copyright (c) 2010 Mans Rullgard <mans@mansr.com> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "asm.S" |
| |
| function ff_dca_lfe_fir_neon, export=1 |
| push {r4-r6,lr} |
| |
| add r4, r0, r3, lsl #2 @ out2 |
| add r5, r2, #256*4-16 @ cf1 |
| sub r1, r1, #12 |
| cmp r3, #32 |
| ite eq |
| moveq r6, #256/32 |
| movne r6, #256/64 |
| NOVFP vldr s0, [sp, #16] @ scale |
| mov lr, #-16 |
| 1: |
| vmov.f32 q2, #0.0 @ v0 |
| vmov.f32 q3, #0.0 @ v1 |
| mov r12, r6 |
| 2: |
| vld1.32 {q8}, [r2,:128]! @ cf0 |
| vld1.32 {q9}, [r5,:128], lr @ cf1 |
| vld1.32 {q1}, [r1], lr @ in |
| subs r12, r12, #4 |
| vrev64.32 q10, q8 |
| vmla.f32 q3, q1, q9 |
| vmla.f32 d4, d2, d21 |
| vmla.f32 d5, d3, d20 |
| bne 2b |
| |
| add r1, r1, r6, lsl #2 |
| subs r3, r3, #1 |
| vadd.f32 d4, d4, d5 |
| vadd.f32 d6, d6, d7 |
| vpadd.f32 d4, d4, d6 |
| vmul.f32 d5, d4, d0[0] |
| vst1.32 {d5[0]}, [r0,:32]! |
| vst1.32 {d5[1]}, [r4,:32]! |
| bne 1b |
| |
| pop {r4-r6,pc} |
| endfunc |
