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 "asm.S" 22 23function 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 moveq r6, #256/32 31 movne r6, #256/64 32NOVFP vldr d0, [sp, #16] @ scale, bias 33 mov lr, #-16 341: 35 vmov.f32 q2, #0.0 @ v0 36 vmov.f32 q3, #0.0 @ v1 37 mov r12, r6 382: 39 vld1.32 {q8}, [r2,:128]! @ cf0 40 vld1.32 {q9}, [r5,:128], lr @ cf1 41 vld1.32 {q1}, [r1], lr @ in 42 subs r12, r12, #4 43 vrev64.32 q10, q8 44 vmla.f32 q3, q1, q9 45 vmla.f32 d4, d2, d21 46 vmla.f32 d5, d3, d20 47 bne 2b 48 49 add r1, r1, r6, lsl #2 50 subs r3, r3, #1 51 vadd.f32 d4, d4, d5 52 vadd.f32 d6, d6, d7 53 vpadd.f32 d4, d4, d6 54 vdup.32 d5, d0[1] 55 vmla.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} 61endfunc 62