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lavc/bswapdsp: add RV Zvbb bswap16 and bswap32

This commit is contained in:
Rémi Denis-Courmont 2024-07-28 21:17:58 +03:00
parent f4daf633b2
commit 952b426f3b
3 changed files with 63 additions and 3 deletions
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1
libavcodec/riscv/Makefile
View File

@ -16,6 +16,7 @@ RVV-OBJS-$(CONFIG_BLOCKDSP) += riscv/blockdsp_rvv.o
OBJS-$(CONFIG_BSWAPDSP) += riscv/bswapdsp_init.o
RV-OBJS-$(CONFIG_BSWAPDSP) += riscv/bswapdsp_rvb.o
RVV-OBJS-$(CONFIG_BSWAPDSP) += riscv/bswapdsp_rvv.o
RVVB-OBJS-$(CONFIG_BSWAPDSP) += riscv/bswapdsp_rvvb.o
OBJS-$(CONFIG_EXR_DECODER) += riscv/exrdsp_init.o
RVV-OBJS-$(CONFIG_EXR_DECODER) += riscv/exrdsp_rvv.o
OBJS-$(CONFIG_FLAC_DECODER) += riscv/flacdsp_init.o

13
libavcodec/riscv/bswapdsp_init.c
View File

@ -27,6 +27,8 @@
void ff_bswap32_buf_rvb(uint32_t *dst, const uint32_t *src, int len);
void ff_bswap16_buf_rvv(uint16_t *dst, const uint16_t *src, int len);
void ff_bswap32_buf_rvvb(uint32_t *dst, const uint32_t *src, int len);
void ff_bswap16_buf_rvvb(uint16_t *dst, const uint16_t *src, int len);
av_cold void ff_bswapdsp_init_riscv(BswapDSPContext *c)
{
@ -38,9 +40,14 @@ av_cold void ff_bswapdsp_init_riscv(BswapDSPContext *c)
c->bswap_buf = ff_bswap32_buf_rvb;
#endif
#if HAVE_RVV
if (flags & AV_CPU_FLAG_RVB_ADDR) {
if (flags & AV_CPU_FLAG_RVV_I32)
c->bswap16_buf = ff_bswap16_buf_rvv;
if ((flags & AV_CPU_FLAG_RVV_I32) && (flags & AV_CPU_FLAG_RVB)) {
c->bswap16_buf = ff_bswap16_buf_rvv;
#if HAVE_RV_ZVBB
if (flags & AV_CPU_FLAG_RV_ZVBB) {
c->bswap_buf = ff_bswap32_buf_rvvb;
c->bswap16_buf = ff_bswap16_buf_rvvb;
}
#endif
}
#endif
#endif

52
libavcodec/riscv/bswapdsp_rvvb.S Normal file
View File

@ -0,0 +1,52 @@
/*
* Copyright © 2024 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_rvvb, zve32x, zvbb, zba
lpad 0
1:
vsetvli t0, a2, e32, m8, ta, ma
vle32.v v8, (a1)
sub a2, a2, t0
vrev8.v v8, v8
sh2add a1, t0, a1
vse32.v v8, (a0)
sh2add a0, t0, a0
bnez a2, 1b
ret
endfunc
func ff_bswap16_buf_rvvb, zve32x, zvbb, zba
lpad 0
1:
vsetvli t0, a2, e16, m8, ta, ma
vle16.v v8, (a1)
sub a2, a2, t0
vrev8.v v8, v8
sh1add a1, t0, a1
vse16.v v8, (a0)
sh1add a0, t0, a0
bnez a2, 1b
ret
endfunc