1 files changed, 175 insertions, 0 deletions
diff --git a/addons/ooh323c/src/ooDateTime.c b/addons/ooh323c/src/ooDateTime.c
new file mode 100644
index 000000000..af6faec65
--- /dev/null
+++ b/addons/ooh323c/src/ooDateTime.c
@@ -0,0 +1,175 @@
+/*
+ * Copyright (C) 2004-2005 by Objective Systems, Inc.
+ *
+ * This software is furnished under an open source license and may be 
+ * used and copied only in accordance with the terms of this license. 
+ * The text of the license may generally be found in the root 
+ * directory of this installation in the LICENSE.txt file.  It 
+ * can also be viewed online at the following URL:
+ *
+ *   http://www.obj-sys.com/open/license.html
+ *
+ * Any redistributions of this file including modified versions must 
+ * maintain this copyright notice.
+ *
+ *****************************************************************************/
+
+#include "ooCommon.h"
+
+#if defined(_WIN32) || defined(_MSC_VER) || defined(__MINGW32__)
+
+#ifndef __MINGW32__
+#include <SYS\TIMEB.H>
+int gettimeofday (struct timeval *tv, struct timezone *tz)
+{
+   struct _timeb currSysTime;
+   _ftime(&currSysTime);
+
+   tv->tv_sec = currSysTime.time;
+   tv->tv_usec = currSysTime.millitm * 1000;
+
+   return 0;
+}
+
+#else
+/* Mingw specific logic..probably works with regular winders
+ * too, but cannot test. --Ben
+ */
+#define uint64 unsigned long long
+#define uint32 unsigned long
+
+static uint64 calcEpocOffset() {
+   SYSTEMTIME st;
+   FILETIME ft;
+
+   memset(&st, 0, sizeof(st));
+   memset(&ft, 0, sizeof(ft));
+
+   st.wYear = 1970;
+   st.wMonth = 1;
+   st.wDayOfWeek = 0;
+   st.wDay = 1;
+   st.wHour = 0;
+   st.wMinute = 0;
+   st.wSecond = 0;
+   st.wMilliseconds = 0;
+
+   if (!SystemTimeToFileTime(&st, &ft)) {
+      //cout << "ERROR:  SystemTimeToFileTime failed, err: "
+      //       << GetLastError() << endl;
+   }
+
+   uint64 t = ft.dwHighDateTime;
+   t = t << 32;
+   t |= ft.dwLowDateTime;
+
+   return t;
+}
+
+// Gets high resolution by spinning up to 15ms.  Don't call this often!!!
+static uint64 getRawCurMsSpin() {
+   FILETIME tm;   
+   uint64 t_now;
+
+   static uint64 epocOffset = 0;
+   static int do_once = 1;
+   if (do_once) {
+      epocOffset = calcEpocOffset();
+      do_once = 0;
+   }
+
+   GetSystemTimeAsFileTime(&tm);
+   uint64 t_start = tm.dwHighDateTime;
+   t_start = t_start << 32;
+   t_start |= tm.dwLowDateTime;
+   while (1) {
+      GetSystemTimeAsFileTime(&tm);
+      t_now = tm.dwHighDateTime;
+      t_now = t_now << 32;
+      t_now |= tm.dwLowDateTime;
+
+      if (t_now != t_start) {
+         // Hit a boundary...as accurate as we are going to get.
+         break;
+      }
+   }
+
+
+   t_now -= epocOffset;
+
+   // t is in 100ns units, convert to usecs
+   t_now = t_now / 10000; //msecs
+
+   return t_now;
+}
+
+static uint64 baselineMs = 0;
+static uint32 tickBaseline = 0;
+
+int gettimeofday(struct timeval* tv, void* null) {
+
+   // Get baseline time, in seconds.
+   if (baselineMs == 0) {
+      baselineMs = getRawCurMsSpin();
+      tickBaseline = timeGetTime();
+   }
+
+   uint32 curTicks = timeGetTime();
+   if (curTicks < tickBaseline) {
+      // Wrap!
+      baselineMs = getRawCurMsSpin();
+      tickBaseline = timeGetTime();
+   }
+   
+   uint64 now_ms = (baselineMs + (curTicks - tickBaseline));
+   *tv = oo_ms_to_tv(now_ms);
+   return 0;
+};
+
+
+/* Correctly synched with the 'real' time/date clock, but only exact to
+ * about 15ms.  Set foo to non NULL if you want to recalculate the
+ */
+uint64 getCurMsFromClock() {
+   // This has resolution of only about 15ms
+   FILETIME tm;
+   // The Windows epoc is January 1, 1601 (UTC).
+   static uint64 offset = 0;
+   static int do_once = 1;
+   if (do_once) {
+      offset = calcEpocOffset();
+      do_once = 0;
+   }
+
+
+   GetSystemTimeAsFileTime(&tm);
+   uint64 t = tm.dwHighDateTime;
+   t = t << 32;
+   t |= tm.dwLowDateTime;
+
+   /*cout << "file-time: " << t << " offset: " << offset
+          << " normalized: " << (t - offset) << " hi: "
+          << tm.dwHighDateTime << " lo: " << tm.dwLowDateTime
+          << " calc-offset:\n" << calcEpocOffset() << "\n\n";
+   */
+   t -= offset;
+
+   // t is in 100ns units, convert to ms
+   t = t / 10000;
+   return t;
+}
+#endif
+#endif
+
+int ooGetTimeOfDay (struct timeval *tv, struct timezone *tz)
+{
+   return gettimeofday (tv, tz);
+}
+
+
+long ooGetTimeDiff(struct timeval *tv1, struct timeval *tv2)
+{
+   return ( ((tv2->tv_sec-tv1->tv_sec)*1000) + 
+            ((tv2->tv_usec-tv1->tv_usec)/1000) );
+}
+