Initial commit based on common repo commit ffeb9c9b

libs/gempa/caps/mseed/spclock.h

@@ -0,0 +1,78 @@
+/*****************************************************************************
+ * spclock.h
+ *
+ * Stream Processor Clock
+ *
+ * (c) 2000 Andres Heinloo, GFZ Potsdam
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any later
+ * version. For more information, see http://www.gnu.org/
+ *
+ * ================
+ * Change log
+ * ===============
+ *
+ * 01.01.2013 Adapted code to CAPS client library requirements (gempa GmbH)
+ *****************************************************************************/
+
+#ifndef CAPS_MSEED_SPCLOCK_H
+#define CAPS_MSEED_SPCLOCK_H
+
+
+#include <gempa/caps/datetime.h>
+
+
+namespace Gempa {
+namespace CAPS {
+
+
+class SPClock
+  {
+  public:
+    typedef Gempa::CAPS::Time INT_TIME;
+
+  private:
+    INT_TIME itime;
+    int ticks;
+    int corr;
+
+  public:
+    const int freqn;
+    const int freqd;
+
+    SPClock(int freqn_init, int freqd_init): ticks(0), corr(0),
+      freqn(freqn_init), freqd(freqd_init)
+      {}
+
+    void sync_time(const INT_TIME &time)
+      {
+        itime = time;
+        ticks = 0;
+        corr = 0;
+      }
+
+    void tick()
+      {
+        ++ticks;
+      }
+
+    INT_TIME get_time(int tick_diff) const
+      {
+        int64_t correctness = (double)freqd / (double)freqn * 1000000 * (ticks - tick_diff - corr);
+        return itime + Gempa::CAPS::TimeSpan(long(correctness/1000000),long(correctness%1000000));
+      }
+
+    int correction() const
+      {
+        return corr;
+      }
+  };
+
+
+}
+}
+
+
+#endif // SPCLOCK_H