1 /* 2 * Copyright (c) 2016 Matthieu Bouron <matthieu.bouron stupeflix.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_resample_common_apply_filter_x4_float_neon, export=1 24 vmov.f32 q0, #0.0 @ accumulator 25 1: vld1.32 {q1}, [r1]! @ src[0..3] 26 vld1.32 {q2}, [r2]! @ filter[0..3] 27 vmla.f32 q0, q1, q2 @ accumulator += src[0..3] * filter[0..3] 28 subs r3, #4 @ filter_length -= 4 29 bgt 1b @ loop until filter_length 30 vpadd.f32 d0, d0, d1 @ pair adding of the 4x32-bit accumulated values 31 vpadd.f32 d0, d0, d0 @ pair adding of the 4x32-bit accumulator values 32 vst1.32 {d0[0]}, [r0] @ write accumulator 33 mov pc, lr 34 endfunc 35 36 function ff_resample_common_apply_filter_x8_float_neon, export=1 37 vmov.f32 q0, #0.0 @ accumulator 38 1: vld1.32 {q1}, [r1]! @ src[0..3] 39 vld1.32 {q2}, [r2]! @ filter[0..3] 40 vld1.32 {q8}, [r1]! @ src[4..7] 41 vld1.32 {q9}, [r2]! @ filter[4..7] 42 vmla.f32 q0, q1, q2 @ accumulator += src[0..3] * filter[0..3] 43 vmla.f32 q0, q8, q9 @ accumulator += src[4..7] * filter[4..7] 44 subs r3, #8 @ filter_length -= 8 45 bgt 1b @ loop until filter_length 46 vpadd.f32 d0, d0, d1 @ pair adding of the 4x32-bit accumulated values 47 vpadd.f32 d0, d0, d0 @ pair adding of the 4x32-bit accumulator values 48 vst1.32 {d0[0]}, [r0] @ write accumulator 49 mov pc, lr 50 endfunc 51 52 function ff_resample_common_apply_filter_x4_s16_neon, export=1 53 vmov.s32 q0, #0 @ accumulator 54 1: vld1.16 {d2}, [r1]! @ src[0..3] 55 vld1.16 {d4}, [r2]! @ filter[0..3] 56 vmlal.s16 q0, d2, d4 @ accumulator += src[0..3] * filter[0..3] 57 subs r3, #4 @ filter_length -= 4 58 bgt 1b @ loop until filter_length 59 vpadd.s32 d0, d0, d1 @ pair adding of the 4x32-bit accumulated values 60 vpadd.s32 d0, d0, d0 @ pair adding of the 4x32-bit accumulator values 61 vst1.32 {d0[0]}, [r0] @ write accumulator 62 mov pc, lr 63 endfunc 64 65 function ff_resample_common_apply_filter_x8_s16_neon, export=1 66 vmov.s32 q0, #0 @ accumulator 67 1: vld1.16 {q1}, [r1]! @ src[0..7] 68 vld1.16 {q2}, [r2]! @ filter[0..7] 69 vmlal.s16 q0, d2, d4 @ accumulator += src[0..3] * filter[0..3] 70 vmlal.s16 q0, d3, d5 @ accumulator += src[4..7] * filter[4..7] 71 subs r3, #8 @ filter_length -= 8 72 bgt 1b @ loop until filter_length 73 vpadd.s32 d0, d0, d1 @ pair adding of the 4x32-bit accumulated values 74 vpadd.s32 d0, d0, d0 @ pair adding of the 4x32-bit accumulator values 75 vst1.32 {d0[0]}, [r0] @ write accumulator 76 mov pc, lr 77 endfunc 78