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)
47 if (_video_position >= _image_content->video_length ()) {
51 if (_image && _image_content->still ()) {
52 video (_image, true, _video_position * TIME_HZ / _video_content->video_frame_rate ());
57 Magick::Image* magick_image = new Magick::Image (_image_content->path (_image_content->still() ? 0 : _video_position).string ());
58 libdcp::Size size (magick_image->columns(), magick_image->rows());
60 _image.reset (new Image (PIX_FMT_RGB24, size, true));
62 using namespace MagickCore;
64 uint8_t* p = _image->data()[0];
65 for (int y = 0; y < size.height; ++y) {
67 for (int x = 0; x < size.width; ++x) {
68 Magick::Color c = magick_image->pixelColor (x, y);
69 *q++ = c.redQuantum() * 255 / QuantumRange;
70 *q++ = c.greenQuantum() * 255 / QuantumRange;
71 *q++ = c.blueQuantum() * 255 / QuantumRange;
73 p += _image->stride()[0];
78 video (_image, false, _video_position * TIME_HZ / _video_content->video_frame_rate ());
85 ImageDecoder::seek (ContentTime time, bool accurate)
87 Decoder::seek (time, accurate);
89 _video_position = rint (time * _video_content->video_frame_rate() / TIME_HZ);