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| /* | |
| * Copyright © 2022 Rémi Denis-Courmont. | |
| * | |
| * 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 "config.h" | |
| #include "libavutil/riscv/asm.S" | |
| func ff_bswap32_buf_rvv, zve32x | |
| li t4, 4 | |
| addi t1, a0, 1 | |
| addi t2, a0, 2 | |
| addi t3, a0, 3 | |
| 1: | |
| vsetvli t0, a2, e8, m1, ta, ma | |
| vlseg4e8.v v8, (a1) | |
| sub a2, a2, t0 | |
| sh2add a1, t0, a1 | |
| vsse8.v v8, (t3), t4 | |
| sh2add t3, t0, t3 | |
| vsse8.v v9, (t2), t4 | |
| sh2add t2, t0, t2 | |
| vsse8.v v10, (t1), t4 | |
| sh2add t1, t0, t1 | |
| vsse8.v v11, (a0), t4 | |
| sh2add a0, t0, a0 | |
| bnez a2, 1b | |
| ret | |
| endfunc | |
| func ff_bswap16_buf_rvv, zve32x | |
| li t2, 2 | |
| addi t1, a0, 1 | |
| 1: | |
| vsetvli t0, a2, e8, m1, ta, ma | |
| vlseg2e8.v v8, (a1) | |
| sub a2, a2, t0 | |
| sh1add a1, t0, a1 | |
| vsse8.v v8, (t1), t2 | |
| sh1add t1, t0, t1 | |
| vsse8.v v9, (a0), t2 | |
| sh1add a0, t0, a0 | |
| bnez a2, 1b | |
| ret | |
| endfunc | |