2 Copyright (C) 2013 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include <boost/lexical_cast.hpp>
23 #include "image_content.h"
24 #include "image_examiner.h"
27 #include "exceptions.h"
35 using boost::shared_ptr;
36 using boost::lexical_cast;
37 using boost::bad_lexical_cast;
39 ImageExaminer::ImageExaminer (shared_ptr<const Film> film, shared_ptr<const ImageContent> content, shared_ptr<Job> job)
41 , _image_content (content)
44 list<unsigned int> frames;
45 size_t const N = content->number_of_paths ();
47 for (size_t i = 0; i < N; ++i) {
48 boost::filesystem::path const p = content->path (i);
50 frames.push_back (lexical_cast<int> (p.stem().string()));
51 } catch (bad_lexical_cast &) {
52 /* We couldn't turn that filename into a number; never mind */
56 using namespace MagickCore;
57 Magick::Image* image = new Magick::Image (p.string());
58 _video_size = libdcp::Size (image->columns(), image->rows());
62 job->set_progress (float (i) / N);
67 if (N > 1 && frames.front() != 0 && frames.front() != 1) {
68 throw StringError (String::compose (_("first frame in moving image directory is number %1"), frames.front ()));
71 if (N > 1 && frames.back() != frames.size() && frames.back() != (frames.size() - 1)) {
72 throw StringError (String::compose (_("there are %1 images in the directory but the last one is number %2"), frames.size(), frames.back ()));
75 if (content->still ()) {
76 _video_length = Config::instance()->default_still_length() * video_frame_rate();
78 _video_length = _image_content->number_of_paths ();
83 ImageExaminer::video_size () const
85 return _video_size.get ();
89 ImageExaminer::video_frame_rate () const
91 boost::shared_ptr<const Film> f = _film.lock ();
96 return f->video_frame_rate ();