diff options
| author | Rémi Denis-Courmont <remi@remlab.net> | 2022-10-02 14:55:00 +0300 |
|---|---|---|
| committer | Lynne <dev@lynne.ee> | 2022-10-05 08:26:19 +0200 |
| commit | d7528af4df169dea0af080f33e41f292a6eba99c (patch) | |
| tree | e5bc6434dd50b3ff0dc7830f5ac8d6a0a15a2861 /libavcodec/riscv | |
| parent | f0ef11ea835181c74afe11fea445790873d5f6bc (diff) | |
lavc/bswapdsp: RISC-V V bswap_buf
Diffstat (limited to 'libavcodec/riscv')
| -rw-r--r-- | libavcodec/riscv/Makefile | 1 | ||||
| -rw-r--r-- | libavcodec/riscv/bswapdsp_init.c | 7 | ||||
| -rw-r--r-- | libavcodec/riscv/bswapdsp_rvv.S | 45 |
3 files changed, 52 insertions, 1 deletions
diff --git a/libavcodec/riscv/Makefile b/libavcodec/riscv/Makefile index 9b8636f87c..eae87ea231 100644 --- a/libavcodec/riscv/Makefile +++ b/libavcodec/riscv/Makefile @@ -7,6 +7,7 @@ OBJS-$(CONFIG_AUDIODSP) += riscv/audiodsp_init.o \ RVV-OBJS-$(CONFIG_AUDIODSP) += riscv/audiodsp_rvv.o OBJS-$(CONFIG_BSWAPDSP) += riscv/bswapdsp_init.o \ riscv/bswapdsp_rvb.o +RVV-OBJS-$(CONFIG_BSWAPDSP) += riscv/bswapdsp_rvv.o OBJS-$(CONFIG_FMTCONVERT) += riscv/fmtconvert_init.o RVV-OBJS-$(CONFIG_FMTCONVERT) += riscv/fmtconvert_rvv.o OBJS-$(CONFIG_IDCTDSP) += riscv/idctdsp_init.o diff --git a/libavcodec/riscv/bswapdsp_init.c b/libavcodec/riscv/bswapdsp_init.c index 701dbeaaa6..c17b6b75bb 100644 --- a/libavcodec/riscv/bswapdsp_init.c +++ b/libavcodec/riscv/bswapdsp_init.c @@ -26,13 +26,18 @@ #include "libavcodec/bswapdsp.h" void ff_bswap32_buf_rvb(uint32_t *dst, const uint32_t *src, int len); +void ff_bswap32_buf_rvv(uint32_t *dst, const uint32_t *src, int len); av_cold void ff_bswapdsp_init_riscv(BswapDSPContext *c) { -#if (__riscv_xlen >= 64) int cpu_flags = av_get_cpu_flags(); +#if (__riscv_xlen >= 64) if (cpu_flags & AV_CPU_FLAG_RVB_BASIC) c->bswap_buf = ff_bswap32_buf_rvb; #endif +#if HAVE_RVV + if (cpu_flags & AV_CPU_FLAG_RVV_I32) + c->bswap_buf = ff_bswap32_buf_rvv; +#endif } diff --git a/libavcodec/riscv/bswapdsp_rvv.S b/libavcodec/riscv/bswapdsp_rvv.S new file mode 100644 index 0000000000..7ea747b3ce --- /dev/null +++ b/libavcodec/riscv/bswapdsp_rvv.S @@ -0,0 +1,45 @@ +/* + * 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 |