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n9.1-dev
libswresample/arm/resample.S
77 строк
5 KB
Martin Storsjö
libswresample/arm: Change to the common indentation size
29 апр 2026, 13:49
29 апр 2026, 13:49
c5a3cb0
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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, export=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 bx lr endfunc function ff_resample_common_apply_filter_x8_float_neon, export=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 bx lr endfunc function ff_resample_common_apply_filter_x4_s16_neon, export=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 bx lr endfunc function ff_resample_common_apply_filter_x8_s16_neon, export=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 bx lr endfunc