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51 lines
1.7 KiB
51 lines
1.7 KiB
/* |
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* Copyright (c) 2017 Kaustubh Raste (kaustubh.raste@imgtec.com) |
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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 "libavutil/mips/cpu.h" |
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#include "config.h" |
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#include "libavutil/attributes.h" |
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#include "libavutil/mips/asmdefs.h" |
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#include "libavcodec/videodsp.h" |
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static void prefetch_mips(const uint8_t *mem, ptrdiff_t stride, int h) |
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{ |
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register const uint8_t *p = mem; |
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__asm__ volatile ( |
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"1: \n\t" |
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"pref 4, 0(%[p]) \n\t" |
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"pref 4, 32(%[p]) \n\t" |
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PTR_ADDIU" %[h], %[h], -1 \n\t" |
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PTR_ADDU " %[p], %[p], %[stride] \n\t" |
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"bnez %[h], 1b \n\t" |
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: [p] "+r" (p), [h] "+r" (h) |
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: [stride] "r" (stride) |
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); |
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} |
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av_cold void ff_videodsp_init_mips(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_msa(cpu_flags)) |
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ctx->prefetch = prefetch_mips; |
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}
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