Add conversions from timeval/FILETIME to RawTime

[libs/core.git] / source / time / rawtime.cpp

diff --git a/source/time/rawtime.cpp b/source/time/rawtime.cpp
index 5c21a683ce295a026b6bd8e4f970950e2d952aba..a299246a0fde69acfb77ed86e948e5265586c1a9 100644 (file)
--- a/source/time/rawtime.cpp
+++ b/source/time/rawtime.cpp
@@ -1,10 +1,41 @@
 #include "rawtime.h"
 #include "rawtime_private.h"
 
+namespace {
+
+#ifdef WIN32
+/// Returns the unixtime epoch as filetime
+Msp::Time::RawTime get_epoch()
+{
+       SYSTEMTIME st;
+       st.wYear = 1970;
+       st.wMonth = 1;
+       st.wDay = 1;
+       st.wHour = 0;
+       st.wMinute = 0;
+       st.wSecond = 0;
+       st.wMilliseconds = 0;
+
+       FILETIME ft;
+       SystemTimeToFileTime(&st, &ft);
+       return (ft.dwLowDateTime+(static_cast<Msp::Time::RawTime>(ft.dwHighDateTime)<<32))/10;
+}
+#endif
+
+}
+
+
 namespace Msp {
 namespace Time {
 
-#ifndef WIN32
+#ifdef WIN32
+RawTime filetime_to_rawtime(const FILETIME &ft)
+{
+       static RawTime epoch = get_epoch();
+       
+       return (ft.dwLowDateTime+(static_cast<RawTime>(ft.dwHighDateTime)<<32))/10-epoch;
+}
+#else
 timeval rawtime_to_timeval(RawTime raw)
 {
        timeval tv;
@@ -20,6 +51,11 @@ timespec rawtime_to_timespec(RawTime raw)
        ts.tv_nsec = (raw%1000000)*1000;
        return ts;
 }
+
+RawTime timeval_to_rawtime(const timeval &tv)
+{
+       return tv.tv_sec*1000000LL+tv.tv_usec;
+}
 #endif
 
 } // namespace Time