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ffmpeg-4.2.2/libavutil/tests/lzo.c 2.61 KB
aac5773f   hucm   功能基本完成,接口待打磨
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  /*
   * Copyright (c) 2006 Reimar Doeffinger
   *
   * 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 <stdio.h>
  #include <lzo/lzo1x.h>
  
  #include "libavutil/log.h"
  #include "libavutil/lzo.h"
  #include "libavutil/mem.h"
  
  #define MAXSZ (10*1024*1024)
  
  /* Define one of these to 1 if you wish to benchmark liblzo
   * instead of our native implementation. */
  #define BENCHMARK_LIBLZO_SAFE   0
  #define BENCHMARK_LIBLZO_UNSAFE 0
  
  int main(int argc, char *argv[]) {
      FILE *in = fopen(argv[1], "rb");
      int comp_level = argc > 2 ? atoi(argv[2]) : 0;
      uint8_t *orig = av_malloc(MAXSZ + 16);
      uint8_t *comp = av_malloc(2*MAXSZ + 16);
      uint8_t *decomp = av_malloc(MAXSZ + 16);
      size_t s = fread(orig, 1, MAXSZ, in);
      lzo_uint clen = 0;
      long tmp[LZO1X_MEM_COMPRESS];
      int inlen, outlen;
      int i;
      av_log_set_level(AV_LOG_DEBUG);
      if (comp_level == 0) {
          lzo1x_1_compress(orig, s, comp, &clen, tmp);
      } else if (comp_level == 11) {
          lzo1x_1_11_compress(orig, s, comp, &clen, tmp);
      } else if (comp_level == 12) {
          lzo1x_1_12_compress(orig, s, comp, &clen, tmp);
      } else if (comp_level == 15) {
          lzo1x_1_15_compress(orig, s, comp, &clen, tmp);
      } else
          lzo1x_999_compress(orig, s, comp, &clen, tmp);
      for (i = 0; i < 300; i++) {
  START_TIMER
          inlen = clen; outlen = MAXSZ;
  #if BENCHMARK_LIBLZO_SAFE
          if (lzo1x_decompress_safe(comp, inlen, decomp, &outlen, NULL))
  #elif BENCHMARK_LIBLZO_UNSAFE
          if (lzo1x_decompress(comp, inlen, decomp, &outlen, NULL))
  #else
          if (av_lzo1x_decode(decomp, &outlen, comp, &inlen))
  #endif
              av_log(NULL, AV_LOG_ERROR, "decompression error\n");
  STOP_TIMER("lzod")
      }
      if (memcmp(orig, decomp, s))
          av_log(NULL, AV_LOG_ERROR, "decompression incorrect\n");
      else
          av_log(NULL, AV_LOG_ERROR, "decompression OK\n");
      fclose(in);
      av_free(orig);
      av_free(comp);
      av_free(decomp);
      return 0;
  }