2 Copyright (C) 2012 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 /** @file src/picture_asset.cc
21 * @brief An asset made up of JPEG2000 files
29 #include <boost/filesystem.hpp>
30 #include <boost/lexical_cast.hpp>
32 #include <libxml++/nodes/element.h>
34 #include "KM_fileio.h"
35 #include "picture_asset.h"
37 #include "exceptions.h"
38 #include "xyz_frame.h"
39 #include "picture_asset_writer.h"
46 using std::stringstream;
51 using boost::shared_ptr;
52 using boost::dynamic_pointer_cast;
53 using boost::lexical_cast;
54 using namespace libdcp;
56 PictureAsset::PictureAsset (boost::filesystem::path directory, boost::filesystem::path mxf_name)
57 : MXFAsset (directory, mxf_name)
63 PictureAsset::write_to_cpl (xmlpp::Element* node, bool interop) const
65 MXFAsset::write_to_cpl (node, interop);
67 xmlpp::Node::NodeList c = node->get_children ();
68 xmlpp::Node::NodeList::iterator i = c.begin();
69 while (i != c.end() && (*i)->get_name() != cpl_node_name ()) {
73 assert (i != c.end ());
75 (*i)->add_child ("FrameRate")->add_child_text (lexical_cast<string> (_edit_rate * edit_rate_factor ()) + " 1");
77 (*i)->add_child ("ScreenAspectRatio")->add_child_text (lexical_cast<string> (float (_size.width) / _size.height));
79 (*i)->add_child ("ScreenAspectRatio")->add_child_text (lexical_cast<string> (_size.width) + " " + lexical_cast<string> (_size.height));
84 PictureAsset::descriptor_equals (
85 ASDCP::JP2K::PictureDescriptor const & a, ASDCP::JP2K::PictureDescriptor const & b, boost::function<void (NoteType, string)> note
89 a.EditRate != b.EditRate ||
90 a.SampleRate != b.SampleRate ||
91 a.StoredWidth != b.StoredWidth ||
92 a.StoredHeight != b.StoredHeight ||
93 a.AspectRatio != b.AspectRatio ||
97 a.XOsize != b.XOsize ||
98 a.YOsize != b.YOsize ||
99 a.XTsize != b.XTsize ||
100 a.YTsize != b.YTsize ||
101 a.XTOsize != b.XTOsize ||
102 a.YTOsize != b.YTOsize ||
104 // a.CodingStyleDefault != b.CodingStyleDefault ||
105 // a.QuantizationDefault != b.QuantizationDefault
108 note (ERROR, "video MXF picture descriptors differ");
112 if (a.ContainerDuration != b.ContainerDuration) {
113 note (ERROR, "video container durations differ");
116 // for (unsigned int j = 0; j < ASDCP::JP2K::MaxComponents; ++j) {
117 // if (a.ImageComponents[j] != b.ImageComponents[j]) {
118 // notes.pack_start ("video MXF picture descriptors differ");
126 PictureAsset::frame_buffer_equals (
127 int frame, EqualityOptions opt, boost::function<void (NoteType, string)> note,
128 uint8_t const * data_A, unsigned int size_A, uint8_t const * data_B, unsigned int size_B
131 if (size_A == size_B && memcmp (data_A, data_B, size_A) == 0) {
132 note (NOTE, "J2K identical");
133 /* Easy result; the J2K data is identical */
137 /* Decompress the images to bitmaps */
138 shared_ptr<XYZFrame> image_A = decompress_j2k (const_cast<uint8_t*> (data_A), size_A, 0);
139 shared_ptr<XYZFrame> image_B = decompress_j2k (const_cast<uint8_t*> (data_B), size_B, 0);
143 vector<int> abs_diffs (image_A->size().width * image_A->size().height * 3);
147 for (int c = 0; c < 3; ++c) {
149 if (image_A->size() != image_B->size()) {
150 note (ERROR, "image sizes for frame " + lexical_cast<string>(frame) + " differ");
154 int const pixels = image_A->size().width * image_A->size().height;
155 for (int j = 0; j < pixels; ++j) {
156 int const t = abs (image_A->data(c)[j] - image_B->data(c)[j]);
158 max_diff = max (max_diff, t);
163 for (vector<int>::iterator j = abs_diffs.begin(); j != abs_diffs.end(); ++j) {
167 double const mean = double (total) / abs_diffs.size ();
169 uint64_t total_squared_deviation = 0;
170 for (vector<int>::iterator j = abs_diffs.begin(); j != abs_diffs.end(); ++j) {
171 total_squared_deviation += pow (*j - mean, 2);
174 double const std_dev = sqrt (double (total_squared_deviation) / abs_diffs.size());
176 note (NOTE, "mean difference " + lexical_cast<string> (mean) + ", deviation " + lexical_cast<string> (std_dev));
178 if (mean > opt.max_mean_pixel_error) {
181 "mean " + lexical_cast<string>(mean) +
182 " out of range " + lexical_cast<string>(opt.max_mean_pixel_error) +
183 " in frame " + lexical_cast<string>(frame)
189 if (std_dev > opt.max_std_dev_pixel_error) {
192 "standard deviation " + lexical_cast<string>(std_dev) +
193 " out of range " + lexical_cast<string>(opt.max_std_dev_pixel_error) +
194 " in frame " + lexical_cast<string>(frame)
204 PictureAsset::key_type () const