2 Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
4 This file is part of libdcp.
6 libdcp is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 libdcp is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with libdcp. If not, see <http://www.gnu.org/licenses/>.
19 In addition, as a special exception, the copyright holders give
20 permission to link the code of portions of this program with the
21 OpenSSL library under certain conditions as described in each
22 individual source file, and distribute linked combinations
25 You must obey the GNU General Public License in all respects
26 for all of the code used other than OpenSSL. If you modify
27 file(s) with this exception, you may extend this exception to your
28 version of the file(s), but you are not obligated to do so. If you
29 do not wish to do so, delete this exception statement from your
30 version. If you delete this exception statement from all source
31 files in the program, then also delete it here.
34 #include "picture_asset.h"
36 #include "exceptions.h"
37 #include "openjpeg_image.h"
38 #include "picture_asset_writer.h"
39 #include "dcp_assert.h"
40 #include "compose.hpp"
42 #include "KM_fileio.h"
44 #include <libxml++/nodes/element.h>
45 #include <boost/filesystem.hpp>
56 using std::stringstream;
61 using boost::shared_ptr;
64 PictureAsset::PictureAsset (boost::filesystem::path file)
66 , _intrinsic_duration (0)
71 PictureAsset::PictureAsset (Fraction edit_rate)
72 : _edit_rate (edit_rate)
73 , _intrinsic_duration (0)
79 PictureAsset::read_picture_descriptor (ASDCP::JP2K::PictureDescriptor const & desc)
81 _size.width = desc.StoredWidth;
82 _size.height = desc.StoredHeight;
83 _edit_rate = Fraction (desc.EditRate.Numerator, desc.EditRate.Denominator);
84 _intrinsic_duration = desc.ContainerDuration;
85 _frame_rate = Fraction (desc.SampleRate.Numerator, desc.SampleRate.Denominator);
86 _screen_aspect_ratio = Fraction (desc.AspectRatio.Numerator, desc.AspectRatio.Denominator);
90 PictureAsset::descriptor_equals (
91 ASDCP::JP2K::PictureDescriptor const & a, ASDCP::JP2K::PictureDescriptor const & b, NoteHandler note
95 a.EditRate != b.EditRate ||
96 a.SampleRate != b.SampleRate ||
97 a.StoredWidth != b.StoredWidth ||
98 a.StoredHeight != b.StoredHeight ||
99 a.AspectRatio != b.AspectRatio ||
100 a.Rsize != b.Rsize ||
101 a.Xsize != b.Xsize ||
102 a.Ysize != b.Ysize ||
103 a.XOsize != b.XOsize ||
104 a.YOsize != b.YOsize ||
105 a.XTsize != b.XTsize ||
106 a.YTsize != b.YTsize ||
107 a.XTOsize != b.XTOsize ||
108 a.YTOsize != b.YTOsize ||
110 // a.CodingStyleDefault != b.CodingStyleDefault ||
111 // a.QuantizationDefault != b.QuantizationDefault
114 note (DCP_ERROR, "video MXF picture descriptors differ");
118 if (a.ContainerDuration != b.ContainerDuration) {
119 note (DCP_ERROR, "video container durations differ");
122 // for (unsigned int j = 0; j < ASDCP::JP2K::MaxComponents; ++j) {
123 // if (a.ImageComponents[j] != b.ImageComponents[j]) {
124 // notes.pack_start ("video MXF picture descriptors differ");
132 PictureAsset::frame_buffer_equals (
133 int frame, EqualityOptions opt, NoteHandler note,
134 uint8_t const * data_A, unsigned int size_A, uint8_t const * data_B, unsigned int size_B
137 if (size_A == size_B && memcmp (data_A, data_B, size_A) == 0) {
138 note (DCP_NOTE, "J2K identical");
139 /* Easy result; the J2K data is identical */
143 /* Decompress the images to bitmaps */
144 shared_ptr<OpenJPEGImage> image_A = decompress_j2k (const_cast<uint8_t*> (data_A), size_A, 0);
145 shared_ptr<OpenJPEGImage> image_B = decompress_j2k (const_cast<uint8_t*> (data_B), size_B, 0);
149 vector<int> abs_diffs (image_A->size().width * image_A->size().height * 3);
153 for (int c = 0; c < 3; ++c) {
155 if (image_A->size() != image_B->size()) {
156 note (DCP_ERROR, String::compose ("image sizes for frame %1 differ", frame));
160 int const pixels = image_A->size().width * image_A->size().height;
161 for (int j = 0; j < pixels; ++j) {
162 int const t = abs (image_A->data(c)[j] - image_B->data(c)[j]);
164 max_diff = max (max_diff, t);
169 for (vector<int>::iterator j = abs_diffs.begin(); j != abs_diffs.end(); ++j) {
173 double const mean = double (total) / abs_diffs.size ();
175 uint64_t total_squared_deviation = 0;
176 for (vector<int>::iterator j = abs_diffs.begin(); j != abs_diffs.end(); ++j) {
177 total_squared_deviation += pow (*j - mean, 2);
180 double const std_dev = sqrt (double (total_squared_deviation) / abs_diffs.size());
182 note (DCP_NOTE, String::compose ("mean difference %1 deviation %2", mean, std_dev));
184 if (mean > opt.max_mean_pixel_error) {
187 String::compose ("mean %1 out of range %2 in frame %3", mean, opt.max_mean_pixel_error, frame)
193 if (std_dev > opt.max_std_dev_pixel_error) {
196 String::compose ("standard deviation %1 out of range %2 in frame %3", std_dev, opt.max_std_dev_pixel_error, frame)
206 PictureAsset::pkl_type (Standard standard) const
210 return "application/x-smpte-mxf;asdcpKind=Picture";
212 return "application/mxf";