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66f7e9db71
On rpi5 A76 crc_32_ieee_le_c: 23146.3 ( 1.00x) crc_32_ieee_le_crc: 1060.1 (21.83x) On RK3566 A55 crc_32_ieee_le_c: 28773.8 ( 1.00x) crc_32_ieee_le_crc: 2602.4 (11.06x) Co-authored-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/*
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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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#ifndef AVUTIL_AARCH64_CRC_H
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#define AVUTIL_AARCH64_CRC_H
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#include <stddef.h>
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#include <stdint.h>
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#include "config.h"
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#include "cpu.h"
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#include "libavutil/attributes_internal.h"
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#include "libavutil/avassert.h"
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#include "libavutil/cpu.h"
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#include "libavutil/crc.h"
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FF_VISIBILITY_PUSH_HIDDEN
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uint32_t ff_crc32_aarch64(const AVCRC *ctx, uint32_t crc, const uint8_t *buffer,
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size_t length);
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FF_VISIBILITY_POP_HIDDEN
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static inline uint32_t ff_crc_aarch64(const AVCRC *ctx, uint32_t crc,
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const uint8_t *buffer, size_t length)
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{
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#if HAVE_ARM_CRC
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av_assert2(ctx[0] == AV_CRC_32_IEEE_LE + 1);
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return ff_crc32_aarch64(ctx, crc, buffer, length);
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#else
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av_unreachable("AARCH64 has only AV_CRC_32_IEEE_LE arch-specific CRC code");
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return 0;
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#endif
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}
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static inline const AVCRC *ff_crc_get_table_aarch64(AVCRCId crc_id)
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{
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#if HAVE_ARM_CRC
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static const AVCRC crc32_ieee_le_ctx[] = {
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AV_CRC_32_IEEE_LE + 1
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};
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if (crc_id != AV_CRC_32_IEEE_LE)
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return NULL;
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int cpu_flags = av_get_cpu_flags();
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if (have_arm_crc(cpu_flags)) {
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return crc32_ieee_le_ctx;
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}
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#endif
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return NULL;
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}
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#endif /* AVUTIL_AARCH64_CRC_H */
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