| /* |
| * ARM NEON optimised DSP functions |
| * Copyright (c) 2008 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 "libavutil/arm/asm.S" |
| |
| function ff_vorbis_inverse_coupling_neon, export=1 |
| vmov.i32 q10, #1<<31 |
| subs r2, r2, #4 |
| mov r3, r0 |
| mov r12, r1 |
| beq 3f |
| |
| vld1.32 {d24-d25},[r1,:128]! |
| vld1.32 {d22-d23},[r0,:128]! |
| vcle.s32 q8, q12, #0 |
| vand q9, q11, q10 |
| veor q12, q12, q9 |
| vand q2, q12, q8 |
| vbic q3, q12, q8 |
| vadd.f32 q12, q11, q2 |
| vsub.f32 q11, q11, q3 |
| 1: vld1.32 {d2-d3}, [r1,:128]! |
| vld1.32 {d0-d1}, [r0,:128]! |
| vcle.s32 q8, q1, #0 |
| vand q9, q0, q10 |
| veor q1, q1, q9 |
| vst1.32 {d24-d25},[r3, :128]! |
| vst1.32 {d22-d23},[r12,:128]! |
| vand q2, q1, q8 |
| vbic q3, q1, q8 |
| vadd.f32 q1, q0, q2 |
| vsub.f32 q0, q0, q3 |
| subs r2, r2, #8 |
| ble 2f |
| vld1.32 {d24-d25},[r1,:128]! |
| vld1.32 {d22-d23},[r0,:128]! |
| vcle.s32 q8, q12, #0 |
| vand q9, q11, q10 |
| veor q12, q12, q9 |
| vst1.32 {d2-d3}, [r3, :128]! |
| vst1.32 {d0-d1}, [r12,:128]! |
| vand q2, q12, q8 |
| vbic q3, q12, q8 |
| vadd.f32 q12, q11, q2 |
| vsub.f32 q11, q11, q3 |
| b 1b |
| |
| 2: vst1.32 {d2-d3}, [r3, :128]! |
| vst1.32 {d0-d1}, [r12,:128]! |
| it lt |
| bxlt lr |
| |
| 3: vld1.32 {d2-d3}, [r1,:128] |
| vld1.32 {d0-d1}, [r0,:128] |
| vcle.s32 q8, q1, #0 |
| vand q9, q0, q10 |
| veor q1, q1, q9 |
| vand q2, q1, q8 |
| vbic q3, q1, q8 |
| vadd.f32 q1, q0, q2 |
| vsub.f32 q0, q0, q3 |
| vst1.32 {d2-d3}, [r0,:128]! |
| vst1.32 {d0-d1}, [r1,:128]! |
| bx lr |
| endfunc |