From e0604d508e97322b88c8e4318516ead0cbc55170 Mon Sep 17 00:00:00 2001 From: Martin Storsjö Date: Fri, 15 May 2020 10:54:10 +0300 Subject: swscale: aarch64: Add a NEON implementation of interleaveBytes MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This allows speeding up format conversions from yuv420 to nv12. Cortex A53 A72 A73 interleave_bytes_c: 86077.5 51433.0 66972.0 interleave_bytes_neon: 19701.7 23019.2 15859.2 interleave_bytes_aligned_c: 86603.0 52017.2 67484.2 interleave_bytes_aligned_neon: 9061.0 7623.0 6309.0 Signed-off-by: Martin Storsjö --- libswscale/aarch64/rgb2rgb_neon.S | 79 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 libswscale/aarch64/rgb2rgb_neon.S (limited to 'libswscale/aarch64/rgb2rgb_neon.S') diff --git a/libswscale/aarch64/rgb2rgb_neon.S b/libswscale/aarch64/rgb2rgb_neon.S new file mode 100644 index 0000000000..d81110ec57 --- /dev/null +++ b/libswscale/aarch64/rgb2rgb_neon.S @@ -0,0 +1,79 @@ +/* + * Copyright (c) 2020 Martin Storsjo + * + * 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/aarch64/asm.S" + +// void ff_interleave_bytes_neon(const uint8_t *src1, const uint8_t *src2, +// uint8_t *dest, int width, int height, +// int src1Stride, int src2Stride, int dstStride); +function ff_interleave_bytes_neon, export=1 + sub w5, w5, w3 + sub w6, w6, w3 + sub w7, w7, w3, lsl #1 +1: + ands w8, w3, #0xfffffff0 // & ~15 + b.eq 3f +2: + ld1 {v0.16b}, [x0], #16 + ld1 {v1.16b}, [x1], #16 + subs w8, w8, #16 + st2 {v0.16b, v1.16b}, [x2], #32 + b.gt 2b + + tst w3, #15 + b.eq 9f + +3: + tst w3, #8 + b.eq 4f + ld1 {v0.8b}, [x0], #8 + ld1 {v1.8b}, [x1], #8 + st2 {v0.8b, v1.8b}, [x2], #16 +4: + tst w3, #4 + b.eq 5f + + ld1 {v0.s}[0], [x0], #4 + ld1 {v1.s}[0], [x1], #4 + zip1 v0.8b, v0.8b, v1.8b + st1 {v0.8b}, [x2], #8 + +5: + ands w8, w3, #3 + b.eq 9f +6: + ldrb w9, [x0], #1 + ldrb w10, [x1], #1 + subs w8, w8, #1 + bfi w9, w10, #8, #8 + strh w9, [x2], #2 + b.gt 6b + +9: + subs w4, w4, #1 + b.eq 0f + add x0, x0, w5, sxtw + add x1, x1, w6, sxtw + add x2, x2, w7, sxtw + b 1b + +0: + ret +endfunc -- cgit v1.2.3