mirror of https://github.com/FFmpeg/FFmpeg.git
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/* |
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* This file is part of Libav. |
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* |
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* Libav 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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* Libav 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 Libav; 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 "libavutil/aarch64/asm.S" |
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function ff_prefetch_aarch64, export=1 |
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subs w2, w2, #2 |
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prfm pldl1strm, [x0] |
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prfm pldl1strm, [x0, x1] |
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add x0, x0, x1, lsl #1 |
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b.gt X(ff_prefetch_aarch64) |
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ret |
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endfunc |
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/*
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* This file is part of Libav. |
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* |
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* Libav 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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* Libav 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 Libav; 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 "libavutil/attributes.h" |
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#include "libavutil/cpu.h" |
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#include "libavutil/aarch64/cpu.h" |
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#include "libavcodec/videodsp.h" |
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void ff_prefetch_aarch64(uint8_t *mem, ptrdiff_t stride, int h); |
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av_cold void ff_videodsp_init_aarch64(VideoDSPContext *ctx, int bpc) |
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{ |
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int cpu_flags = av_get_cpu_flags(); |
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if (have_armv8(cpu_flags)) |
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ctx->prefetch = ff_prefetch_aarch64; |
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} |
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