Merge branch 'mpeg2' into v2.17.xv2.17.16

1 files changed, 64 insertions, 0 deletions

diff --git a/src/lib/video_encoder.cc b/src/lib/video_encoder.cc
new file mode 100644
index 000000000..590dc7471
--- /dev/null
+++ b/src/lib/video_encoder.cc
@@ -0,0 +1,64 @@
+/*
+    Copyright (C) 2024 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 "video_encoder.h"
+
+
+using std::shared_ptr;
+using boost::optional;
+
+
+VideoEncoder::VideoEncoder(shared_ptr<const Film> film, Writer& writer)
+	: _film(film)
+	, _writer(writer)
+	, _history(200)
+{
+
+}
+
+
+void
+VideoEncoder::encode(shared_ptr<PlayerVideo>, dcpomatic::DCPTime time)
+{
+	_last_player_video_time = time;
+}
+
+
+/** @return Number of video frames that have been queued for encoding */
+int
+VideoEncoder::video_frames_enqueued() const
+{
+	if (!_last_player_video_time) {
+		return 0;
+	}
+
+	return _last_player_video_time->frames_floor(_film->video_frame_rate());
+}
+
+
+/** @return an estimate of the current number of frames we are encoding per second,
+ *  if known.
+ */
+optional<float>
+VideoEncoder::current_encoding_rate() const
+{
+	return _history.rate();
+}