2 Copyright (C) 2012-2016 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 /** @file src/dcp_video_frame.cc
22 * @brief A single frame of video destined for a DCP.
24 * Given an Image and some settings, this class knows how to encode
25 * the image to J2K either on the local host or on a remote server.
27 * Objects of this class are used for the queue that we keep
28 * of images that require encoding.
31 #include "dcp_video.h"
33 #include "exceptions.h"
34 #include "encode_server_description.h"
37 #include "dcpomatic_log.h"
39 #include "player_video.h"
40 #include "compose.hpp"
42 #include <libcxml/cxml.h>
43 #include <dcp/raw_convert.h>
44 #include <dcp/openjpeg_image.h>
45 #include <dcp/rgb_xyz.h>
47 DCPOMATIC_DISABLE_WARNINGS
48 #include <libxml++/libxml++.h>
49 DCPOMATIC_ENABLE_WARNINGS
50 #include <boost/thread.hpp>
59 using boost::shared_ptr;
62 using dcp::raw_convert;
63 #if BOOST_VERSION >= 106100
64 using namespace boost::placeholders;
66 using namespace dcpomatic;
69 #define DCI_COEFFICENT (48.0 / 52.37)
71 /** Construct a DCP video frame.
72 * @param frame Input frame.
73 * @param index Index of the frame within the DCP.
74 * @param bw J2K bandwidth to use (see Config::j2k_bandwidth ())
77 shared_ptr<const PlayerVideo> frame, int index, int dcp_fps, int bw, Resolution r
81 , _frames_per_second (dcp_fps)
88 DCPVideo::DCPVideo (shared_ptr<const PlayerVideo> frame, shared_ptr<const cxml::Node> node)
91 _index = node->number_child<int> ("Index");
92 _frames_per_second = node->number_child<int> ("FramesPerSecond");
93 _j2k_bandwidth = node->number_child<int> ("J2KBandwidth");
94 _resolution = Resolution (node->optional_number_child<int>("Resolution").get_value_or (RESOLUTION_2K));
97 shared_ptr<dcp::OpenJPEGImage>
98 DCPVideo::convert_to_xyz (shared_ptr<const PlayerVideo> frame, dcp::NoteHandler note)
100 shared_ptr<dcp::OpenJPEGImage> xyz;
102 shared_ptr<Image> image = frame->image (bind (&PlayerVideo::keep_xyz_or_rgb, _1), true, false);
103 if (frame->colour_conversion()) {
104 xyz = dcp::rgb_to_xyz (
108 frame->colour_conversion().get(),
112 xyz.reset (new dcp::OpenJPEGImage (image->data()[0], image->size(), image->stride()[0]));
120 DCPVideo::add_metadata (xmlpp::Element* el) const
122 el->add_child("Index")->add_child_text (raw_convert<string> (_index));
123 el->add_child("FramesPerSecond")->add_child_text (raw_convert<string> (_frames_per_second));
124 el->add_child("J2KBandwidth")->add_child_text (raw_convert<string> (_j2k_bandwidth));
125 el->add_child("Resolution")->add_child_text (raw_convert<string> (int (_resolution)));
126 _frame->add_metadata (el);
130 /** @return true if this DCPVideo is definitely the same as another;
131 * (apart from the frame index), false if it is probably not.
134 DCPVideo::same (shared_ptr<const DCPVideo> other) const
136 if (_frames_per_second != other->_frames_per_second ||
137 _j2k_bandwidth != other->_j2k_bandwidth ||
138 _resolution != other->_resolution) {
142 return _frame->same (other->_frame);