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
28 #include <boost/filesystem.hpp>
29 #include <boost/lexical_cast.hpp>
31 #include <libxml++/nodes/element.h>
33 #include "KM_fileio.h"
34 #include "picture_asset.h"
36 #include "exceptions.h"
37 #include "xyz_frame.h"
38 #include "picture_asset_writer.h"
45 using std::stringstream;
50 using boost::shared_ptr;
51 using boost::dynamic_pointer_cast;
52 using boost::lexical_cast;
53 using namespace libdcp;
55 PictureAsset::PictureAsset (boost::filesystem::path directory, boost::filesystem::path mxf_name)
56 : MXFAsset (directory, mxf_name)
62 PictureAsset::write_to_cpl (xmlpp::Element* node, bool interop) const
64 MXFAsset::write_to_cpl (node, interop);
66 xmlpp::Node::NodeList c = node->get_children ();
67 xmlpp::Node::NodeList::iterator i = c.begin();
68 while (i != c.end() && (*i)->get_name() != cpl_node_name ()) {
72 assert (i != c.end ());
74 (*i)->add_child ("FrameRate")->add_child_text (lexical_cast<string> (_edit_rate * edit_rate_factor ()) + " 1");
77 s << std::fixed << std::setprecision (2) << (float (_size.width) / _size.height);
78 (*i)->add_child ("ScreenAspectRatio")->add_child_text (s.str ());
80 (*i)->add_child ("ScreenAspectRatio")->add_child_text (lexical_cast<string> (_size.width) + " " + lexical_cast<string> (_size.height));
85 PictureAsset::descriptor_equals (
86 ASDCP::JP2K::PictureDescriptor const & a, ASDCP::JP2K::PictureDescriptor const & b, boost::function<void (NoteType, string)> note
90 a.EditRate != b.EditRate ||
91 a.SampleRate != b.SampleRate ||
92 a.StoredWidth != b.StoredWidth ||
93 a.StoredHeight != b.StoredHeight ||
94 a.AspectRatio != b.AspectRatio ||
98 a.XOsize != b.XOsize ||
99 a.YOsize != b.YOsize ||
100 a.XTsize != b.XTsize ||
101 a.YTsize != b.YTsize ||
102 a.XTOsize != b.XTOsize ||
103 a.YTOsize != b.YTOsize ||
105 // a.CodingStyleDefault != b.CodingStyleDefault ||
106 // a.QuantizationDefault != b.QuantizationDefault
109 note (ERROR, "video MXF picture descriptors differ");
113 if (a.ContainerDuration != b.ContainerDuration) {
114 note (ERROR, "video container durations differ");
117 // for (unsigned int j = 0; j < ASDCP::JP2K::MaxComponents; ++j) {
118 // if (a.ImageComponents[j] != b.ImageComponents[j]) {
119 // notes.pack_start ("video MXF picture descriptors differ");
127 PictureAsset::frame_buffer_equals (
128 int frame, EqualityOptions opt, boost::function<void (NoteType, string)> note,
129 uint8_t const * data_A, unsigned int size_A, uint8_t const * data_B, unsigned int size_B
132 if (size_A == size_B && memcmp (data_A, data_B, size_A) == 0) {
133 note (NOTE, "J2K identical");
134 /* Easy result; the J2K data is identical */
138 /* Decompress the images to bitmaps */
139 shared_ptr<XYZFrame> image_A = decompress_j2k (const_cast<uint8_t*> (data_A), size_A, 0);
140 shared_ptr<XYZFrame> image_B = decompress_j2k (const_cast<uint8_t*> (data_B), size_B, 0);
144 vector<int> abs_diffs (image_A->size().width * image_A->size().height * 3);
148 for (int c = 0; c < 3; ++c) {
150 if (image_A->size() != image_B->size()) {
151 note (ERROR, "image sizes for frame " + lexical_cast<string>(frame) + " differ");
155 int const pixels = image_A->size().width * image_A->size().height;
156 for (int j = 0; j < pixels; ++j) {
157 int const t = abs (image_A->data(c)[j] - image_B->data(c)[j]);
159 max_diff = max (max_diff, t);
164 for (vector<int>::iterator j = abs_diffs.begin(); j != abs_diffs.end(); ++j) {
168 double const mean = double (total) / abs_diffs.size ();
170 uint64_t total_squared_deviation = 0;
171 for (vector<int>::iterator j = abs_diffs.begin(); j != abs_diffs.end(); ++j) {
172 total_squared_deviation += pow (*j - mean, 2);
175 double const std_dev = sqrt (double (total_squared_deviation) / abs_diffs.size());
177 note (NOTE, "mean difference " + lexical_cast<string> (mean) + ", deviation " + lexical_cast<string> (std_dev));
179 if (mean > opt.max_mean_pixel_error) {
182 "mean " + lexical_cast<string>(mean) +
183 " out of range " + lexical_cast<string>(opt.max_mean_pixel_error) +
184 " in frame " + lexical_cast<string>(frame)
190 if (std_dev > opt.max_std_dev_pixel_error) {
193 "standard deviation " + lexical_cast<string>(std_dev) +
194 " out of range " + lexical_cast<string>(opt.max_std_dev_pixel_error) +
195 " in frame " + lexical_cast<string>(frame)
205 PictureAsset::key_type () const