X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Fframe_time.cc;h=65996c090742082d25a48700a64b961a3dbef59c;hb=589a2d8108899141756bd41126ab117e42f17701;hp=da9973cc0904e80e26fec463da6dd8a28aad23dd;hpb=99d72a19f9e5ebbbb36bbbb95164a15c165a6a42;p=libsub.git

diff --git a/src/frame_time.cc b/src/frame_time.cc
index da9973c..65996c0 100644
--- a/src/frame_time.cc
+++ b/src/frame_time.cc
@@ -63,6 +63,12 @@ FrameTime::timecode () const
 }
 
 FrameTime::FrameTime (int64_t f, float fps)
+{
+	set_from_frames (f, fps);
+}
+
+void
+FrameTime::set_from_frames (int64_t f, float fps)
 {
 	_hours = f / (60 * 60 * fps);
 	f -= _hours * 60 * 60 * fps;
@@ -96,3 +102,12 @@ FrameTime::add (FrameTime t, float fps)
 
 	_hours += t.hours ();
 }
+
+void
+FrameTime::scale (float f, float frames_per_second)
+{
+	set_from_frames (
+		(((_hours * 3600 + _minutes * 60 + _seconds) * frames_per_second) + _frames) * f,
+		frames_per_second
+		);
+}