mirror of https://git.ffmpeg.org/ffmpeg.git
62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
/*
|
|
* Copyright (c) 2020 Loongson Technology Corporation Limited
|
|
* Contributed by Shiyou Yin <yinshiyou-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 <stdint.h>
|
|
#include "cpu.h"
|
|
#include <sys/auxv.h>
|
|
|
|
#define LA_HWCAP_LSX (1<<4)
|
|
#define LA_HWCAP_LASX (1<<5)
|
|
static int cpu_flags_getauxval(void)
|
|
{
|
|
int flags = 0;
|
|
int flag = (int)ff_getauxval(AT_HWCAP);
|
|
|
|
if (flag & LA_HWCAP_LSX)
|
|
flags |= AV_CPU_FLAG_LSX;
|
|
if (flag & LA_HWCAP_LASX)
|
|
flags |= AV_CPU_FLAG_LASX;
|
|
|
|
return flags;
|
|
}
|
|
|
|
int ff_get_cpu_flags_loongarch(void)
|
|
{
|
|
#if defined __linux__
|
|
return cpu_flags_getauxval();
|
|
#else
|
|
/* Assume no SIMD ASE supported */
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
size_t ff_get_cpu_max_align_loongarch(void)
|
|
{
|
|
int flags = av_get_cpu_flags();
|
|
|
|
if (flags & AV_CPU_FLAG_LASX)
|
|
return 32;
|
|
if (flags & AV_CPU_FLAG_LSX)
|
|
return 16;
|
|
|
|
return 8;
|
|
}
|