2 Copyright (C) 2012-2013 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/filesystem.hpp>
23 #include "image_content.h"
24 #include "image_decoder.h"
27 #include "exceptions.h"
32 using boost::shared_ptr;
35 ImageDecoder::ImageDecoder (shared_ptr<const Film> f, shared_ptr<const ImageContent> c)
46 if (_video_position >= _image_content->video_length ()) {
50 if (_image && _image_content->still ()) {
51 video (_image, true, _video_position);
55 Magick::Image* magick_image = 0;
56 boost::filesystem::path const path = _image_content->path (_image_content->still() ? 0 : _video_position);
58 magick_image = new Magick::Image (path.string ());
60 throw OpenFileError (path);
63 libdcp::Size size (magick_image->columns(), magick_image->rows());
65 _image.reset (new Image (PIX_FMT_RGB24, size, true));
67 using namespace MagickCore;
69 uint8_t* p = _image->data()[0];
70 for (int y = 0; y < size.height; ++y) {
72 for (int x = 0; x < size.width; ++x) {
73 Magick::Color c = magick_image->pixelColor (x, y);
74 *q++ = c.redQuantum() * 255 / QuantumRange;
75 *q++ = c.greenQuantum() * 255 / QuantumRange;
76 *q++ = c.blueQuantum() * 255 / QuantumRange;
78 p += _image->stride()[0];
83 video (_image, false, _video_position);
87 ImageDecoder::seek (VideoContent::Frame frame, bool)
89 _video_position = frame;
93 ImageDecoder::done () const
95 return _video_position >= _image_content->video_length ();