diff options
| author | gxw <guxiwei-hf@loongson.cn> | 2021-12-29 18:18:22 +0800 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-01-04 15:55:05 +0100 |
| commit | 8ca7d474c19f856b28fa588e040b23b1a58368ed (patch) | |
| tree | 28c339ae50fb60984f9a896db5cb11c9229f5759 | |
| parent | 555b850bd56c87007c6b7b02dbb1e474e9911dfa (diff) | |
| download | ffmpeg-8ca7d474c19f856b28fa588e040b23b1a58368ed.tar.gz | |
avcodec: [loongarch] Optimize prefetch with loongarch.
./ffmpeg -i ../1_h264_1080p_30fps_3Mbps.mp4 -f rawvideo -y /dev/null -an
before:296
after :308
Reviewed-by: 殷时友 <yinshiyou-hf@loongson.cn>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/loongarch/Makefile | 1 | ||||
| -rw-r--r-- | libavcodec/loongarch/videodsp_init.c | 45 | ||||
| -rw-r--r-- | libavcodec/videodsp.c | 2 | ||||
| -rw-r--r-- | libavcodec/videodsp.h | 1 |
4 files changed, 49 insertions, 0 deletions
diff --git a/libavcodec/loongarch/Makefile b/libavcodec/loongarch/Makefile index c4d71e801b..3c15c2edeb 100644 --- a/libavcodec/loongarch/Makefile +++ b/libavcodec/loongarch/Makefile @@ -7,6 +7,7 @@ OBJS-$(CONFIG_VP9_DECODER) += loongarch/vp9dsp_init_loongarch.o OBJS-$(CONFIG_VC1DSP) += loongarch/vc1dsp_init_loongarch.o OBJS-$(CONFIG_HPELDSP) += loongarch/hpeldsp_init_loongarch.o OBJS-$(CONFIG_IDCTDSP) += loongarch/idctdsp_init_loongarch.o +OBJS-$(CONFIG_VIDEODSP) += loongarch/videodsp_init.o LASX-OBJS-$(CONFIG_H264CHROMA) += loongarch/h264chroma_lasx.o LASX-OBJS-$(CONFIG_H264QPEL) += loongarch/h264qpel_lasx.o LASX-OBJS-$(CONFIG_H264DSP) += loongarch/h264dsp_lasx.o \ diff --git a/libavcodec/loongarch/videodsp_init.c b/libavcodec/loongarch/videodsp_init.c new file mode 100644 index 0000000000..6cbb7763ff --- /dev/null +++ b/libavcodec/loongarch/videodsp_init.c @@ -0,0 +1,45 @@ +/* + * Copyright (c) 2021 Loongson Technology Corporation Limited + * Contributed by Xiwei Gu <guxiwei-hf@loongson.cn> + * + * 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 "libavcodec/videodsp.h" +#include "libavutil/attributes.h" + +static void prefetch_loongarch(uint8_t *mem, ptrdiff_t stride, int h) +{ + register const uint8_t *p = mem; + + __asm__ volatile ( + "1: \n\t" + "preld 0, %[p], 0 \n\t" + "preld 0, %[p], 32 \n\t" + "addi.d %[h], %[h], -1 \n\t" + "add.d %[p], %[p], %[stride] \n\t" + + "blt $r0, %[h], 1b \n\t" + : [p] "+r" (p), [h] "+r" (h) + : [stride] "r" (stride) + ); +} + +av_cold void ff_videodsp_init_loongarch(VideoDSPContext *ctx, int bpc) +{ + ctx->prefetch = prefetch_loongarch; +} diff --git a/libavcodec/videodsp.c b/libavcodec/videodsp.c index ce9e9eb143..212147984f 100644 --- a/libavcodec/videodsp.c +++ b/libavcodec/videodsp.c @@ -54,4 +54,6 @@ av_cold void ff_videodsp_init(VideoDSPContext *ctx, int bpc) ff_videodsp_init_x86(ctx, bpc); if (ARCH_MIPS) ff_videodsp_init_mips(ctx, bpc); + if (ARCH_LOONGARCH64) + ff_videodsp_init_loongarch(ctx, bpc); } diff --git a/libavcodec/videodsp.h b/libavcodec/videodsp.h index c0545f22b0..ac971dc57f 100644 --- a/libavcodec/videodsp.h +++ b/libavcodec/videodsp.h @@ -84,5 +84,6 @@ void ff_videodsp_init_arm(VideoDSPContext *ctx, int bpc); void ff_videodsp_init_ppc(VideoDSPContext *ctx, int bpc); void ff_videodsp_init_x86(VideoDSPContext *ctx, int bpc); void ff_videodsp_init_mips(VideoDSPContext *ctx, int bpc); +void ff_videodsp_init_loongarch(VideoDSPContext *ctx, int bpc); #endif /* AVCODEC_VIDEODSP_H */ |