| /* |
| * 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 |
