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| /* | |
| * Copyright (c) 2016 Matthieu Bouron <matthieu.bouron stupeflix.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_resample_common_apply_filter_x4_float_neon, =1 | |
| vmov.f32 q0, #0.0 @ accumulator | |
| 1: vld1.32 {q1}, [r1]! @ src[0..3] | |
| vld1.32 {q2}, [r2]! @ filter[0..3] | |
| vmla.f32 q0, q1, q2 @ accumulator += src[0..3] * filter[0..3] | |
| subs r3, #4 @ filter_length -= 4 | |
| bgt 1b @ loop until filter_length | |
| vpadd.f32 d0, d0, d1 @ pair adding of the 4x32-bit accumulated values | |
| vpadd.f32 d0, d0, d0 @ pair adding of the 4x32-bit accumulator values | |
| vst1.32 {d0[0]}, [r0] @ write accumulator | |
| mov pc, lr | |
| endfunc | |
| function ff_resample_common_apply_filter_x8_float_neon, =1 | |
| vmov.f32 q0, #0.0 @ accumulator | |
| 1: vld1.32 {q1}, [r1]! @ src[0..3] | |
| vld1.32 {q2}, [r2]! @ filter[0..3] | |
| vld1.32 {q8}, [r1]! @ src[4..7] | |
| vld1.32 {q9}, [r2]! @ filter[4..7] | |
| vmla.f32 q0, q1, q2 @ accumulator += src[0..3] * filter[0..3] | |
| vmla.f32 q0, q8, q9 @ accumulator += src[4..7] * filter[4..7] | |
| subs r3, #8 @ filter_length -= 8 | |
| bgt 1b @ loop until filter_length | |
| vpadd.f32 d0, d0, d1 @ pair adding of the 4x32-bit accumulated values | |
| vpadd.f32 d0, d0, d0 @ pair adding of the 4x32-bit accumulator values | |
| vst1.32 {d0[0]}, [r0] @ write accumulator | |
| mov pc, lr | |
| endfunc | |
| function ff_resample_common_apply_filter_x4_s16_neon, =1 | |
| vmov.s32 q0, #0 @ accumulator | |
| 1: vld1.16 {d2}, [r1]! @ src[0..3] | |
| vld1.16 {d4}, [r2]! @ filter[0..3] | |
| vmlal.s16 q0, d2, d4 @ accumulator += src[0..3] * filter[0..3] | |
| subs r3, #4 @ filter_length -= 4 | |
| bgt 1b @ loop until filter_length | |
| vpadd.s32 d0, d0, d1 @ pair adding of the 4x32-bit accumulated values | |
| vpadd.s32 d0, d0, d0 @ pair adding of the 4x32-bit accumulator values | |
| vst1.32 {d0[0]}, [r0] @ write accumulator | |
| mov pc, lr | |
| endfunc | |
| function ff_resample_common_apply_filter_x8_s16_neon, =1 | |
| vmov.s32 q0, #0 @ accumulator | |
| 1: vld1.16 {q1}, [r1]! @ src[0..7] | |
| vld1.16 {q2}, [r2]! @ filter[0..7] | |
| vmlal.s16 q0, d2, d4 @ accumulator += src[0..3] * filter[0..3] | |
| vmlal.s16 q0, d3, d5 @ accumulator += src[4..7] * filter[4..7] | |
| subs r3, #8 @ filter_length -= 8 | |
| bgt 1b @ loop until filter_length | |
| vpadd.s32 d0, d0, d1 @ pair adding of the 4x32-bit accumulated values | |
| vpadd.s32 d0, d0, d0 @ pair adding of the 4x32-bit accumulator values | |
| vst1.32 {d0[0]}, [r0] @ write accumulator | |
| mov pc, lr | |
| endfunc | |