Merge still/moving image classes.

1 files changed, 97 insertions, 0 deletions

diff --git a/src/lib/image_examiner.cc b/src/lib/image_examiner.cc
new file mode 100644
index 000000000..2d150583a
--- /dev/null
+++ b/src/lib/image_examiner.cc
@@ -0,0 +1,97 @@
+/*
+    Copyright (C) 2013 Carl Hetherington <cth@carlh.net>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <iostream>
+#include <boost/lexical_cast.hpp>
+#include <Magick++.h>
+#include "image_content.h"
+#include "image_examiner.h"
+#include "film.h"
+#include "job.h"
+#include "exceptions.h"
+#include "config.h"
+
+#include "i18n.h"
+
+using std::cout;
+using std::list;
+using std::sort;
+using boost::shared_ptr;
+using boost::lexical_cast;
+using boost::bad_lexical_cast;
+
+ImageExaminer::ImageExaminer (shared_ptr<const Film> film, shared_ptr<const ImageContent> content, shared_ptr<Job> job)
+	: _film (film)
+	, _image_content (content)
+	, _video_length (0)
+{
+	list<unsigned int> frames;
+	size_t const N = content->number_of_paths ();
+
+	for (size_t i = 0; i < N; ++i) {
+		boost::filesystem::path const p = content->path (i);
+		try {
+			frames.push_back (lexical_cast<int> (p.stem().string()));
+		} catch (bad_lexical_cast &) {
+			/* We couldn't turn that filename into a number; never mind */
+		}
+		
+		if (!_video_size) {
+			using namespace MagickCore;
+			Magick::Image* image = new Magick::Image (p.string());
+			_video_size = libdcp::Size (image->columns(), image->rows());
+			delete image;
+		}
+	
+		job->set_progress (float (i) / N);
+	}
+
+	frames.sort ();
+	
+	if (N > 1 && frames.front() != 0 && frames.front() != 1) {
+		throw StringError (String::compose (_("first frame in moving image directory is number %1"), frames.front ()));
+	}
+
+	if (N > 1 && frames.back() != frames.size() && frames.back() != (frames.size() - 1)) {
+		throw StringError (String::compose (_("there are %1 images in the directory but the last one is number %2"), frames.size(), frames.back ()));
+	}
+
+	if (content->still ()) {
+		_video_length = Config::instance()->default_still_length() * video_frame_rate();
+	} else {
+		_video_length = _image_content->number_of_paths ();
+	}
+}
+
+libdcp::Size
+ImageExaminer::video_size () const
+{
+	return _video_size.get ();
+}
+
+float
+ImageExaminer::video_frame_rate () const
+{
+	boost::shared_ptr<const Film> f = _film.lock ();
+	if (!f) {
+		return 24;
+	}
+
+	return f->video_frame_rate ();
+}