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, string 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::equals (shared_ptr<const Asset> other, EqualityOptions opt, boost::function<void (NoteType, string)> note) const
86 if (!MXFAsset::equals (other, opt, note)) {
90 ASDCP::JP2K::MXFReader reader_A;
91 if (ASDCP_FAILURE (reader_A.OpenRead (path().string().c_str()))) {
92 boost::throw_exception (MXFFileError ("could not open MXF file for reading", path().string()));
95 ASDCP::JP2K::MXFReader reader_B;
96 if (ASDCP_FAILURE (reader_B.OpenRead (other->path().string().c_str()))) {
97 boost::throw_exception (MXFFileError ("could not open MXF file for reading", path().string()));
100 ASDCP::JP2K::PictureDescriptor desc_A;
101 if (ASDCP_FAILURE (reader_A.FillPictureDescriptor (desc_A))) {
102 boost::throw_exception (DCPReadError ("could not read video MXF information"));
104 ASDCP::JP2K::PictureDescriptor desc_B;
105 if (ASDCP_FAILURE (reader_B.FillPictureDescriptor (desc_B))) {
106 boost::throw_exception (DCPReadError ("could not read video MXF information"));
110 desc_A.EditRate != desc_B.EditRate ||
111 desc_A.SampleRate != desc_B.SampleRate ||
112 desc_A.StoredWidth != desc_B.StoredWidth ||
113 desc_A.StoredHeight != desc_B.StoredHeight ||
114 desc_A.AspectRatio != desc_B.AspectRatio ||
115 desc_A.Rsize != desc_B.Rsize ||
116 desc_A.Xsize != desc_B.Xsize ||
117 desc_A.Ysize != desc_B.Ysize ||
118 desc_A.XOsize != desc_B.XOsize ||
119 desc_A.YOsize != desc_B.YOsize ||
120 desc_A.XTsize != desc_B.XTsize ||
121 desc_A.YTsize != desc_B.YTsize ||
122 desc_A.XTOsize != desc_B.XTOsize ||
123 desc_A.YTOsize != desc_B.YTOsize ||
124 desc_A.Csize != desc_B.Csize
125 // desc_A.CodingStyleDefault != desc_B.CodingStyleDefault ||
126 // desc_A.QuantizationDefault != desc_B.QuantizationDefault
129 note (ERROR, "video MXF picture descriptors differ");
133 if (desc_A.ContainerDuration != desc_B.ContainerDuration) {
134 note (ERROR, "video container durations differ");
137 // for (unsigned int j = 0; j < ASDCP::JP2K::MaxComponents; ++j) {
138 // if (desc_A.ImageComponents[j] != desc_B.ImageComponents[j]) {
139 // notes.pack_start ("video MXF picture descriptors differ");
147 PictureAsset::frame_buffer_equals (
148 int frame, EqualityOptions opt, boost::function<void (NoteType, string)> note,
149 uint8_t const * data_A, unsigned int size_A, uint8_t const * data_B, unsigned int size_B
152 if (size_A == size_B && memcmp (data_A, data_B, size_A) == 0) {
153 note (NOTE, "J2K identical");
154 /* Easy result; the J2K data is identical */
158 /* Decompress the images to bitmaps */
159 shared_ptr<XYZFrame> image_A = decompress_j2k (const_cast<uint8_t*> (data_A), size_A, 0);
160 shared_ptr<XYZFrame> image_B = decompress_j2k (const_cast<uint8_t*> (data_B), size_B, 0);
164 vector<int> abs_diffs (image_A->size().width * image_A->size().height * 3);
168 for (int c = 0; c < 3; ++c) {
170 if (image_A->size() != image_B->size()) {
171 note (ERROR, "image sizes for frame " + lexical_cast<string>(frame) + " differ");
175 int const pixels = image_A->size().width * image_A->size().height;
176 for (int j = 0; j < pixels; ++j) {
177 int const t = abs (image_A->data(c)[j] - image_B->data(c)[j]);
179 max_diff = max (max_diff, t);
184 for (vector<int>::iterator j = abs_diffs.begin(); j != abs_diffs.end(); ++j) {
188 double const mean = double (total) / abs_diffs.size ();
190 uint64_t total_squared_deviation = 0;
191 for (vector<int>::iterator j = abs_diffs.begin(); j != abs_diffs.end(); ++j) {
192 total_squared_deviation += pow (*j - mean, 2);
195 double const std_dev = sqrt (double (total_squared_deviation) / abs_diffs.size());
197 note (NOTE, "mean difference " + lexical_cast<string> (mean) + ", deviation " + lexical_cast<string> (std_dev));
199 if (mean > opt.max_mean_pixel_error) {
202 "mean " + lexical_cast<string>(mean) +
203 " out of range " + lexical_cast<string>(opt.max_mean_pixel_error) +
204 " in frame " + lexical_cast<string>(frame)
210 if (std_dev > opt.max_std_dev_pixel_error) {
213 "standard deviation " + lexical_cast<string>(std_dev) +
214 " out of range " + lexical_cast<string>(opt.max_std_dev_pixel_error) +
215 " in frame " + lexical_cast<string>(frame)
225 PictureAsset::key_type () const