2 Copyright (C) 2012-2021 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/>.
22 /** @file src/dcp_video_frame.cc
23 * @brief A single frame of video destined for a DCP.
25 * Given an Image and some settings, this class knows how to encode
26 * the image to J2K either on the local host or on a remote server.
28 * Objects of this class are used for the queue that we keep
29 * of images that require encoding.
34 #include "dcp_video.h"
35 #include "player_video.h"
36 #include <libcxml/cxml.h>
42 using std::make_shared;
43 using std::shared_ptr;
47 #define DCI_COEFFICENT (48.0 / 52.37)
50 /** Construct a DCP video frame.
51 * @param frame Input frame.
52 * @param index Index of the frame within the DCP.
53 * @param bw J2K bandwidth to use (see Config::j2k_bandwidth ())
56 shared_ptr<const PlayerVideo> frame, int index, int dcp_fps, int bw, Resolution r
60 , _frames_per_second (dcp_fps)
67 DCPVideo::DCPVideo (shared_ptr<const PlayerVideo> frame, shared_ptr<const cxml::Node> node)
70 _index = node->number_child<int> ("Index");
71 _frames_per_second = node->number_child<int> ("FramesPerSecond");
72 _j2k_bandwidth = node->number_child<int> ("J2KBandwidth");
73 _resolution = Resolution (node->optional_number_child<int>("Resolution").get_value_or(static_cast<int>(Resolution::TWO_K)));
78 DCPVideo::eyes () const
80 return _frame->eyes ();
83 /** @return true if this DCPVideo is definitely the same as another;
84 * (apart from the frame index), false if it is probably not.
87 DCPVideo::same (shared_ptr<const DCPVideo> other) const
89 if (_frames_per_second != other->_frames_per_second ||
90 _j2k_bandwidth != other->_j2k_bandwidth ||
91 _resolution != other->_resolution) {
95 return _frame->same (other->_frame);