source/time/rawtime.cpp

   1 #include "rawtime.h"
   2 #include "rawtime_private.h"
   3
   4 namespace {
   5
   6 #ifdef WIN32
   7 /// Returns the unixtime epoch as filetime
   8 Msp::Time::RawTime get_epoch()
   9 {
  10         SYSTEMTIME st;
  11         st.wYear = 1970;
  12         st.wMonth = 1;
  13         st.wDay = 1;
  14         st.wHour = 0;
  15         st.wMinute = 0;
  16         st.wSecond = 0;
  17         st.wMilliseconds = 0;
  18
  19         FILETIME ft;
  20         SystemTimeToFileTime(&st, &ft);
  21         return (ft.dwLowDateTime+(static_cast<Msp::Time::RawTime>(ft.dwHighDateTime)<<32))/10;
  22 }
  23 #endif
  24
  25 }
  26
  27
  28 namespace Msp {
  29 namespace Time {
  30
  31 #ifdef WIN32
  32 RawTime filetime_to_rawtime(const FILETIME &ft)
  33 {
  34         static RawTime epoch = get_epoch();
  35
  36         return (ft.dwLowDateTime+(static_cast<RawTime>(ft.dwHighDateTime)<<32))/10-epoch;
  37 }
  38 #else
  39 timeval rawtime_to_timeval(RawTime raw)
  40 {
  41         timeval tv;
  42         tv.tv_sec = raw/1000000;
  43         tv.tv_usec = raw%1000000;
  44         return tv;
  45 }
  46
  47 timespec rawtime_to_timespec(RawTime raw)
  48 {
  49         timespec ts;
  50         ts.tv_sec = raw/1000000;
  51         ts.tv_nsec = (raw%1000000)*1000;
  52         return ts;
  53 }
  54
  55 RawTime timeval_to_rawtime(const timeval &tv)
  56 {
  57         return tv.tv_sec*1000000LL+tv.tv_usec;
  58 }
  59 #endif
  60
  61 } // namespace Time
  62 } // namespace Msp