src/lib/platform/timeutils.h

   1 #pragma once
   2 /*
   3  * This file is part of the libCEC(R) library.
   4  *
   5  * libCEC(R) is Copyright (C) 2011 Pulse-Eight Limited.  All rights reserved.
   6  * libCEC(R) is an original work, containing original code.
   7  *
   8  * libCEC(R) is a trademark of Pulse-Eight Limited.
   9  *
  10  * This program is dual-licensed; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  23  *
  24  *
  25  * Alternatively, you can license this library under a commercial license,
  26  * please contact Pulse-Eight Licensing for more information.
  27  *
  28  * For more information contact:
  29  * Pulse-Eight Licensing       <license@pulse-eight.com>
  30  *     http://www.pulse-eight.com/
  31  *     http://www.pulse-eight.net/
  32  */
  33
  34 #include <stdint.h>
  35 #if defined(__APPLE__)
  36 #include <mach/mach_time.h>
  37 #include <CoreVideo/CVHostTime.h>
  38 #elif defined(__WINDOWS__)
  39 #include <time.h>
  40 #else
  41 #include <sys/time.h>
  42 #endif
  43
  44 namespace CEC
  45 {
  46   inline int64_t GetTimeMs()
  47   {
  48   #if defined(__APPLE__)
  49     return (int64_t) (CVGetCurrentHostTime() * 1000 / CVGetHostClockFrequency());
  50   #elif defined(__WINDOWS__)
  51     time_t rawtime;
  52     time(&rawtime);
  53
  54     LARGE_INTEGER tickPerSecond;
  55     LARGE_INTEGER tick;
  56     if (QueryPerformanceFrequency(&tickPerSecond))
  57     {
  58       QueryPerformanceCounter(&tick);
  59       return (int64_t) (tick.QuadPart / 1000.);
  60     }
  61     return -1;
  62   #else
  63     timeval time;
  64     gettimeofday(&time, NULL);
  65     return (int64_t) (time.tv_sec * 1000 + time.tv_usec / 1000);
  66   #endif
  67   }
  68
  69   template <class T>
  70   inline T GetTimeSec()
  71   {
  72     return (T)GetTimeMs() / (T)1000.0;
  73   }
  74 };