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61 lines
1.6 KiB
61 lines
1.6 KiB
/* |
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* Copyright (c) 2020 Loongson Technology Corporation Limited |
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* Contributed by Shiyou Yin <yinshiyou-hf@loongson.cn> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include <stdint.h> |
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#include "cpu.h" |
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#include <sys/auxv.h> |
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#define LA_HWCAP_LSX (1<<4) |
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#define LA_HWCAP_LASX (1<<5) |
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static int cpu_flags_getauxval(void) |
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{ |
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int flags = 0; |
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int flag = (int)getauxval(AT_HWCAP); |
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if (flag & LA_HWCAP_LSX) |
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flags |= AV_CPU_FLAG_LSX; |
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if (flag & LA_HWCAP_LASX) |
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flags |= AV_CPU_FLAG_LASX; |
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return flags; |
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} |
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int ff_get_cpu_flags_loongarch(void) |
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{ |
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#if defined __linux__ |
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return cpu_flags_getauxval(); |
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#else |
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/* Assume no SIMD ASE supported */ |
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return 0; |
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#endif |
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} |
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size_t ff_get_cpu_max_align_loongarch(void) |
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{ |
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int flags = av_get_cpu_flags(); |
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if (flags & AV_CPU_FLAG_LASX) |
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return 32; |
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if (flags & AV_CPU_FLAG_LSX) |
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return 16; |
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return 8; |
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}
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