2 Copyright (C) 2016-2017 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
6 DCP-o-matic is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 DCP-o-matic is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
21 #include "video_ring_buffers.h"
22 #include "player_video.h"
23 #include <boost/foreach.hpp>
31 using boost::shared_ptr;
32 using boost::optional;
35 VideoRingBuffers::put (shared_ptr<PlayerVideo> frame, DCPTime time)
37 boost::mutex::scoped_lock lm (_mutex);
38 _data.push_back (make_pair (frame, time));
41 pair<shared_ptr<PlayerVideo>, DCPTime>
42 VideoRingBuffers::get ()
44 boost::mutex::scoped_lock lm (_mutex);
46 return make_pair(shared_ptr<PlayerVideo>(), DCPTime());
48 pair<shared_ptr<PlayerVideo>, DCPTime> const r = _data.front ();
54 VideoRingBuffers::size () const
56 boost::mutex::scoped_lock lm (_mutex);
61 VideoRingBuffers::empty () const
63 boost::mutex::scoped_lock lm (_mutex);
64 return _data.empty ();
68 VideoRingBuffers::clear ()
70 boost::mutex::scoped_lock lm (_mutex);
75 VideoRingBuffers::earliest () const
77 boost::mutex::scoped_lock lm (_mutex);
79 return optional<DCPTime> ();
82 return _data.front().second;