aac5773f
 hucm
功能基本完成，接口待打磨
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/*
* Copyright (C) 2013 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
*
* 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 "libavutil/intreadwrite.h"
#include "libavutil/mem.h"
#include "libavutil/murmur3.h"
int main(void)
{
int i;
uint8_t hash_result[16] = {0};
struct AVMurMur3 *ctx = av_murmur3_alloc();
#if 1
uint8_t in[256] = {0};
uint8_t *hashes = av_mallocz(256 * 16);
for (i = 0; i < 256; i++)
{
in[i] = i;
av_murmur3_init_seeded(ctx, 256 - i);
// Note: this actually tests hashing 0 bytes
av_murmur3_update(ctx, in, i);
av_murmur3_final(ctx, hashes + 16 * i);
}
av_murmur3_init_seeded(ctx, 0);
av_murmur3_update(ctx, hashes, 256 * 16);
av_murmur3_final(ctx, hash_result);
av_free(hashes);
av_freep(&ctx);
printf("result: 0x%"PRIx64" 0x%"PRIx64"\n", AV_RL64(hash_result), AV_RL64(hash_result + 8));
// official reference value is 32 bit
return AV_RL32(hash_result) != 0x6384ba69;
#else
uint8_t *in = av_mallocz(512*1024);
av_murmur3_init(ctx);
for (i = 0; i < 40*1024; i++)
av_murmur3_update(ctx, in, 512*1024);
av_murmur3_final(ctx, hash_result);
av_free(in);
return hash_result[0];
#endif
}
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