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  1. /*
  2.  * Copyright (c) 2000-2003 Fabrice Bellard
  3.  *
  4.  * This file is part of FFmpeg.
  5.  *
  6.  * FFmpeg is free software; you can redistribute it and/or
  7.  * modify it under the terms of the GNU Lesser General Public
  8.  * License as published by the Free Software Foundation; either
  9.  * version 2.1 of the License, or (at your option) any later version.
  10.  *
  11.  * FFmpeg is distributed in the hope that it will be useful,
  12.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14.  * Lesser General Public License for more details.
  15.  *
  16.  * You should have received a copy of the GNU Lesser General Public
  17.  * License along with FFmpeg; if not, write to the Free Software
  18.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19.  */
  20.  
  21. #include "config.h"
  22.  
  23. #include <stddef.h>
  24. #include <stdint.h>
  25. #include <time.h>
  26. #if HAVE_GETTIMEOFDAY
  27. #include <sys/time.h>
  28. #endif
  29. #if HAVE_UNISTD_H
  30. #include <unistd.h>
  31. #endif
  32. #if HAVE_WINDOWS_H
  33. #include <windows.h>
  34. #endif
  35.  
  36. #include "time.h"
  37. #include "error.h"
  38.  
  39. int64_t av_gettime(void)
  40. {
  41. #if HAVE_GETTIMEOFDAY
  42.     struct timeval tv;
  43.     gettimeofday(&tv, NULL);
  44.     return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
  45. #elif HAVE_GETSYSTEMTIMEASFILETIME
  46.     FILETIME ft;
  47.     int64_t t;
  48.     GetSystemTimeAsFileTime(&ft);
  49.     t = (int64_t)ft.dwHighDateTime << 32 | ft.dwLowDateTime;
  50.     return t / 10 - 11644473600000000; /* Jan 1, 1601 */
  51. #else
  52.     return -1;
  53. #endif
  54. }
  55.  
  56. int av_usleep(unsigned usec)
  57. {
  58.     return AVERROR(ENOSYS);
  59. }
  60.