Move some methods into piece.cc

1 files changed, 69 insertions, 0 deletions

diff --git a/src/lib/piece.cc b/src/lib/piece.cc
new file mode 100644
index 000000000..f3adc0aef
--- /dev/null
+++ b/src/lib/piece.cc
@@ -0,0 +1,69 @@
+/*
+    Copyright (C) 2013-2020 Carl Hetherington <cth@carlh.net>
+
+    This file is part of DCP-o-matic.
+
+    DCP-o-matic 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 of the License, or
+    (at your option) any later version.
+
+    DCP-o-matic is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#include "piece.h"
+
+
+using boost::shared_ptr;
+using namespace dcpomatic;
+
+
+DCPTime
+Piece::position () const
+{
+	return content->position ();
+}
+
+
+DCPTime
+Piece::end (shared_ptr<const Film> film) const
+{
+	return content->end (film);
+}
+
+
+DCPTime
+Piece::content_video_to_dcp (Frame f) const
+{
+	/* It might seem more logical here to convert s to a ContentTime (using the FrameRateChange)
+	   then convert that ContentTime to frames at the content's rate.  However this fails for
+	   situations like content at 29.9978733fps, DCP at 30fps.  The accuracy of the Time type is not
+	   enough to distinguish between the two with low values of time (e.g. 3200 in Time units).
+
+	   Instead we convert the DCPTime using the DCP video rate then account for any skip/repeat.
+	   */
+	DCPTime const d = DCPTime::from_frames(f * frc.factor(), frc.dcp) - DCPTime(content->trim_start(), frc);
+	return d + position();
+}
+
+
+DCPTime
+Piece::content_time_to_dcp (ContentTime t) const
+{
+	return max (DCPTime(), DCPTime(t - content->trim_start(), frc) + position());
+}
+
+
+Crop
+Piece::video_crop () const
+{
+	return content->video->crop ();
+}
+