comparison base/RealTime.cpp @ 26:090c22aa726a

* Add the Note layer for pianoroll-type display of note-type data
* Complete the MIDI file importer (well, nearly -- it would be nice to
  be able to import the non-note data as other sorts of models, and that's
  not done yet).
* Minor refactoring in RealTime etc

 
 using std::cerr;
 using std::endl;
 
 #include "base/RealTime.h"
+#include "sys/time.h"
 
 // A RealTime consists of two ints that must be at least 32 bits each.
 // A signed 32-bit int can store values exceeding +/- 2 billion.  This
 // means we can safely use our lower int for nanoseconds, as there are
 // 1 billion nanoseconds in a second and we need to handle double that

 	while (nsec >=  ONE_BILLION) { nsec -= ONE_BILLION; ++sec; }
 	while (nsec < 0)             { nsec += ONE_BILLION; --sec; }
     }
 }
 
+RealTime
+RealTime::fromSeconds(double sec)
+{
+    return RealTime(int(sec), int((sec - int(sec)) * ONE_BILLION));
+}
+
+RealTime
+RealTime::fromMilliseconds(int msec)
+{
+    return RealTime(msec / 1000, (msec % 1000) * 1000000);
+}
+
+RealTime
+RealTime::fromTimeval(const struct timeval &tv)
+{
+    return RealTime(tv.tv_sec, tv.tv_usec * 1000);
+}
 
 std::ostream &operator<<(std::ostream &out, const RealTime &rt)
 {
     if (rt < RealTime::zeroTime) {
 	out << "-";