2 Copyright (C) 2012-2016 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.
20 #include "image_content.h"
21 #include "image_decoder.h"
22 #include "video_decoder.h"
24 #include "magick_image_proxy.h"
25 #include "j2k_image_proxy.h"
27 #include "exceptions.h"
28 #include "video_content.h"
30 #include <boost/filesystem.hpp>
36 using boost::shared_ptr;
39 ImageDecoder::ImageDecoder (shared_ptr<const ImageContent> c, shared_ptr<Log> log)
43 video.reset (new VideoDecoder (this, c, log));
47 ImageDecoder::pass (PassReason, bool)
49 if (_video_position >= _image_content->video->length()) {
53 if (!_image_content->still() || !_image) {
54 /* Either we need an image or we are using moving images, so load one */
55 boost::filesystem::path path = _image_content->path (_image_content->still() ? 0 : _video_position);
56 if (valid_j2k_file (path)) {
57 /* We can't extract image size from a JPEG2000 codestream without decoding it,
58 so pass in the image content's size here.
60 _image.reset (new J2KImageProxy (path, _image_content->video->size ()));
62 _image.reset (new MagickImageProxy (path));
66 video->video (_image, _video_position);
72 ImageDecoder::seek (ContentTime time, bool accurate)
74 video->seek (time, accurate);
75 _video_position = time.frames_round (_image_content->active_video_frame_rate ());