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Code Issues Releases Activity

lavc/mpegvideoencdsp: R-V V pix_sum

Browse Source 
T-Head C908:
pix_sum_c:      332.2
pix_sum_rvv_i64: 91.2

SpacemiT X60:
pix_sum_c:      321.2
pix_sum_rvv_i64: 60.9
This commit is contained in:
Rémi Denis-Courmont 2024-08-09 22:03:49 +03:00
parent 631a725670
commit 63d016aea5
5 changed files with 90 additions and 0 deletions
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2
libavcodec/mpegvideoencdsp.c
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@ -249,6 +249,8 @@ av_cold void ff_mpegvideoencdsp_init(MpegvideoEncDSPContext *c,
ff_mpegvideoencdsp_init_arm(c, avctx);
#elif ARCH_PPC
ff_mpegvideoencdsp_init_ppc(c, avctx);
#elif ARCH_RISCV
ff_mpegvideoencdsp_init_riscv(c, avctx);
#elif ARCH_X86
ff_mpegvideoencdsp_init_x86(c, avctx);
#elif ARCH_MIPS

2
libavcodec/mpegvideoencdsp.h
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@ -50,6 +50,8 @@ void ff_mpegvideoencdsp_init_arm(MpegvideoEncDSPContext *c,
AVCodecContext *avctx);
void ff_mpegvideoencdsp_init_ppc(MpegvideoEncDSPContext *c,
AVCodecContext *avctx);
void ff_mpegvideoencdsp_init_riscv(MpegvideoEncDSPContext *c,
AVCodecContext *avctx);
void ff_mpegvideoencdsp_init_x86(MpegvideoEncDSPContext *c,
AVCodecContext *avctx);
void ff_mpegvideoencdsp_init_mips(MpegvideoEncDSPContext *c,

2
libavcodec/riscv/Makefile
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@ -47,6 +47,8 @@ OBJS-$(CONFIG_LPC) += riscv/lpc_init.o
RVV-OBJS-$(CONFIG_LPC) += riscv/lpc_rvv.o
OBJS-$(CONFIG_ME_CMP) += riscv/me_cmp_init.o
RVV-OBJS-$(CONFIG_ME_CMP) += riscv/me_cmp_rvv.o
OBJS-$(CONFIG_MPEGVIDEOENC) += riscv/mpegvideoencdsp_init.o
RVV-OBJS-$(CONFIG_MPEGVIDEOENC) += riscv/mpegvideoencdsp_rvv.o
OBJS-$(CONFIG_OPUS_DECODER) += riscv/opusdsp_init.o
RVV-OBJS-$(CONFIG_OPUS_DECODER) += riscv/opusdsp_rvv.o
OBJS-$(CONFIG_PIXBLOCKDSP) += riscv/pixblockdsp_init.o

38
libavcodec/riscv/mpegvideoencdsp_init.c Normal file
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@ -0,0 +1,38 @@
/*
* 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 <stdint.h>
#include "libavutil/cpu.h"
#include "libavcodec/mpegvideoencdsp.h"
int ff_pix_sum_rvv(const uint8_t *pix, int line_size);
av_cold void ff_mpegvideoencdsp_init_riscv(MpegvideoEncDSPContext *c,
AVCodecContext *avctx)
{
#if HAVE_RVV
int flags = av_get_cpu_flags();
if ((flags & AV_CPU_FLAG_RVV_I64) && (flags & AV_CPU_FLAG_RVB) &&
ff_rv_vlen_least(128))
c->pix_sum = ff_pix_sum_rvv;
#endif
}

46
libavcodec/riscv/mpegvideoencdsp_rvv.S Normal file
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@ -0,0 +1,46 @@
/*
* 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 "libavutil/riscv/asm.S"
func ff_pix_sum_rvv, zve64x, b
lpad 0
vsetivli t0, 16, e16, m1, ta, ma
slli t1, t0, 3
vlsseg2e64.v v8, (a0), a1 # poor man's vlse128.v
li t2, 16
vmv.s.x v1, zero
vsetvli zero, t1, e8, m4, ta, ma
vwaddu.vv v16, v8, v12
beq t0, t2, 2f # VLEN >= 256
1:
sh3add a0, a1, a0
vsetivli zero, 8, e16, m1, ta, ma
vlsseg2e64.v v8, (a0), a1
vsetvli zero, t1, e8, m4, ta, ma
vwaddu.wv v16, v16, v8
vwaddu.wv v16, v16, v12
2:
vsetvli zero, zero, e16, m8, ta, ma
vredsum.vs v1, v16, v1
vmv.x.s a0, v1
zext.h a0, a0
ret
endfunc