2 Copyright (C) 2013-2015 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 "image_content.h"
22 #include "image_examiner.h"
25 #include "exceptions.h"
28 #include "compose.hpp"
29 #include "ffmpeg_image_proxy.h"
31 #include <dcp/openjpeg_image.h>
32 #include <dcp/exceptions.h>
41 using boost::shared_ptr;
42 using boost::optional;
44 ImageExaminer::ImageExaminer (shared_ptr<const Film> film, shared_ptr<const ImageContent> content, shared_ptr<Job>)
46 , _image_content (content)
48 boost::filesystem::path path = content->path(0).string ();
49 if (valid_j2k_file (path)) {
50 boost::uintmax_t size = boost::filesystem::file_size (path);
51 FILE* f = fopen_boost (path, "rb");
53 throw FileError ("Could not open file for reading", path);
55 uint8_t* buffer = new uint8_t[size];
56 checked_fread (buffer, size, f, path);
59 _video_size = dcp::decompress_j2k (buffer, size, 0)->size ();
60 } catch (dcp::DCPReadError& e) {
62 throw DecodeError (String::compose (_("Could not decode JPEG2000 file %1 (%2)"), path, e.what ()));
66 FFmpegImageProxy proxy(content->path(0));
67 _video_size = proxy.image().first->size();
70 if (content->still ()) {
71 _video_length = Config::instance()->default_still_length() * video_frame_rate().get_value_or (film->video_frame_rate ());
73 _video_length = _image_content->number_of_paths ();
78 ImageExaminer::video_size () const
80 return _video_size.get ();
84 ImageExaminer::video_frame_rate () const
86 if (_image_content->video_frame_rate()) {
87 /* The content already knows what frame rate it should be */
88 return _image_content->video_frame_rate().get();
92 return optional<double> ();
96 ImageExaminer::yuv () const
98 /* We never convert ImageSource from YUV to RGB (though maybe sometimes we should)
99 so it makes sense to just say they are never YUV so the option of a conversion
100 to RGB is not offered.