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Code Issues Releases Activity

lavc/fmtconvert: RISC-V V int32_to_float_fmul_scalar

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This commit is contained in:
Rémi Denis-Courmont
2022-09-26 17:52:43 +03:00
committed by Lynne
parent f41ae62f39
commit 47a10b9a99
5 changed files with 83 additions and 0 deletions
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2
libavcodec/fmtconvert.c
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@@ -52,6 +52,8 @@ av_cold void ff_fmt_convert_init(FmtConvertContext *c)
ff_fmt_convert_init_arm(c);
#elif ARCH_PPC
ff_fmt_convert_init_ppc(c);
#elif ARCH_RISCV
ff_fmt_convert_init_riscv(c);
#elif ARCH_X86
ff_fmt_convert_init_x86(c);
#endif

1
libavcodec/fmtconvert.h
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@@ -61,6 +61,7 @@ void ff_fmt_convert_init(FmtConvertContext *c);
void ff_fmt_convert_init_aarch64(FmtConvertContext *c);
void ff_fmt_convert_init_arm(FmtConvertContext *c);
void ff_fmt_convert_init_ppc(FmtConvertContext *c);
void ff_fmt_convert_init_riscv(FmtConvertContext *c);
void ff_fmt_convert_init_x86(FmtConvertContext *c);
void ff_fmt_convert_init_mips(FmtConvertContext *c);

2
libavcodec/riscv/Makefile
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@@ -1,5 +1,7 @@
OBJS-$(CONFIG_AUDIODSP) += riscv/audiodsp_init.o \
riscv/audiodsp_rvf.o
RVV-OBJS-$(CONFIG_AUDIODSP) += riscv/audiodsp_rvv.o
OBJS-$(CONFIG_FMTCONVERT) += riscv/fmtconvert_init.o
RVV-OBJS-$(CONFIG_FMTCONVERT) += riscv/fmtconvert_rvv.o
OBJS-$(CONFIG_PIXBLOCKDSP) += riscv/pixblockdsp_init.o \
riscv/pixblockdsp_rvi.o

39
libavcodec/riscv/fmtconvert_init.c Normal file
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@@ -0,0 +1,39 @@
/*
* 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 <stdint.h>
#include "config.h"
#include "libavutil/attributes.h"
#include "libavutil/cpu.h"
#include "libavcodec/fmtconvert.h"
void ff_int32_to_float_fmul_scalar_rvv(float *dst, const int32_t *src,
float mul, int len);
av_cold void ff_fmt_convert_init_riscv(FmtConvertContext *c)
{
#ifdef HAVE_RVV
int flags = av_get_cpu_flags();
if (flags & AV_CPU_FLAG_RVV_F32)
c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_rvv;
#endif
}

39
libavcodec/riscv/fmtconvert_rvv.S Normal file
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@@ -0,0 +1,39 @@
/*
* 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_int32_to_float_fmul_scalar_rvv, zve32f
NOHWF fmv.w.x fa0, a2
NOHWF mv a2, a3
1:
vsetvli t0, a2, e32, m1, ta, ma
vle32.v v24, (a1)
sub a2, a2, t0
vfcvt.f.x.v v24, v24
sh2add a1, t0, a1
vfmul.vf v24, v24, fa0
vse32.v v24, (a0)
sh2add a0, t0, a0
bnez a2, 1b
ret
endfunc