test/mca_test.cc

   1 /*
   2     Copyright (C) 2020 Carl Hetherington <cth@carlh.net>
   3
   4     This file is part of libdcp.
   5
   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.
  10
  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.
  15
  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/>.
  18
  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
  23     including the two.
  24
  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.
  32 */
  33
  34
  35 #include "compose.hpp"
  36 #include "cpl.h"
  37 #include "reel.h"
  38 #include "reel_sound_asset.h"
  39 #include "sound_asset.h"
  40 #include "sound_asset_writer.h"
  41 #include "test.h"
  42 #include <libcxml/cxml.h>
  43 #include <libxml++/libxml++.h>
  44 #include <boost/test/unit_test.hpp>
  45
  46
  47 using std::list;
  48 using std::string;
  49 using std::vector;
  50 using std::shared_ptr;
  51
  52
  53 /** Check that when we read a MXF and write its MCA metadata to a CPL we get the same answer
  54  *  as the original MXF for that CPL (for a couple of different MXFs).
  55  */
  56 BOOST_AUTO_TEST_CASE (parse_mca_descriptors_from_mxf_test)
  57 {
  58         for (int i = 1; i < 3; ++i) {
  59                 shared_ptr<dcp::SoundAsset> sound_asset(new dcp::SoundAsset(private_test / "data" / dcp::String::compose("51_sound_with_mca_%1.mxf", i)));
  60                 shared_ptr<dcp::ReelSoundAsset> reel_sound_asset(new dcp::ReelSoundAsset(sound_asset, 0));
  61                 shared_ptr<dcp::Reel> reel(new dcp::Reel());
  62                 reel->add (black_picture_asset(dcp::String::compose("build/test/parse_mca_descriptors_from_mxf_test%1", i), 24));
  63                 reel->add (reel_sound_asset);
  64
  65                 dcp::CPL cpl("", dcp::ContentKind::FEATURE);
  66                 cpl.add (reel);
  67                 cpl.set_main_sound_configuration("51/L,R,C,LFE,Ls,Rs");
  68                 cpl.set_main_sound_sample_rate(48000);
  69                 cpl.set_main_picture_stored_area(dcp::Size(1998, 1080));
  70                 cpl.set_main_picture_active_area(dcp::Size(1998, 1080));
  71                 cpl.write_xml (dcp::String::compose("build/test/parse_mca_descriptors_from_mxf_test%1/cpl.xml", i), dcp::Standard::SMPTE, shared_ptr<dcp::CertificateChain>());
  72
  73                 cxml::Document ref("CompositionPlaylist", private_test / dcp::String::compose("51_sound_with_mca_%1.cpl", i));
  74                 cxml::Document check("CompositionPlaylist", dcp::String::compose("build/test/parse_mca_descriptors_from_mxf_test%1/cpl.xml", i));
  75
  76                 vector<string> ignore;
  77                 check_xml (
  78                         dynamic_cast<xmlpp::Element*>(
  79                                 ref.node_child("ReelList")->node_children("Reel").front()->node_child("AssetList")->node_child("CompositionMetadataAsset")->node_child("MCASubDescriptors")->node()
  80                                 ),
  81                         dynamic_cast<xmlpp::Element*>(
  82                                 check.node_child("ReelList")->node_children("Reel").front()->node_child("AssetList")->node_child("CompositionMetadataAsset")->node_child("MCASubDescriptors")->node()
  83                                 ),
  84                         ignore,
  85                         true
  86                         );
  87         }
  88 }
  89
  90
  91 /** Reproduce the MCA tags from one of the example files using libdcp */
  92 BOOST_AUTO_TEST_CASE (write_mca_descriptors_to_mxf_test)
  93 {
  94         shared_ptr<dcp::SoundAsset> sound_asset(new dcp::SoundAsset(dcp::Fraction(24, 1), 48000, 6, dcp::LanguageTag("en-US"), dcp::Standard::SMPTE));
  95         vector<dcp::Channel> channels;
  96         channels.push_back (dcp::Channel::LEFT);
  97         channels.push_back (dcp::Channel::RIGHT);
  98         channels.push_back (dcp::Channel::CENTRE);
  99         channels.push_back (dcp::Channel::LFE);
 100         channels.push_back (dcp::Channel::LS);
 101         channels.push_back (dcp::Channel::RS);
 102         shared_ptr<dcp::SoundAssetWriter> writer = sound_asset->start_write("build/test/write_mca_descriptors_to_mxf_test.mxf", channels);
 103
 104         float* samples[6];
 105         for (int i = 0; i < 6; ++i) {
 106                 samples[i] = new float[2000];
 107                 memset (samples[i], 0, 2000 * sizeof(float));
 108         }
 109         for (int i = 0; i < 24; ++i) {
 110                 writer->write(samples, 2000);
 111         }
 112         for (int i = 0; i < 6; ++i) {
 113                 delete[] samples[i];
 114         }
 115
 116         writer->finalize();
 117
 118         /* Make a CPL as a roundabout way to read the metadata we just wrote to the MXF */
 119
 120         shared_ptr<dcp::ReelSoundAsset> reel_sound_asset(new dcp::ReelSoundAsset(sound_asset, 0));
 121         shared_ptr<dcp::Reel> reel(new dcp::Reel());
 122         reel->add (black_picture_asset("build/test/write_mca_descriptors_to_mxf_test", 24));
 123         reel->add (reel_sound_asset);
 124
 125         dcp::CPL cpl("", dcp::ContentKind::FEATURE);
 126         cpl.add (reel);
 127         cpl.set_main_sound_configuration("51/L,R,C,LFE,Ls,Rs");
 128         cpl.set_main_sound_sample_rate(48000);
 129         cpl.set_main_picture_stored_area(dcp::Size(1998, 1080));
 130         cpl.set_main_picture_active_area(dcp::Size(1998, 1080));
 131         cpl.write_xml ("build/test/write_mca_descriptors_to_mxf_test/cpl.xml", dcp::Standard::SMPTE, shared_ptr<dcp::CertificateChain>());
 132
 133         cxml::Document ref("CompositionPlaylist", private_test / "51_sound_with_mca_1.cpl");
 134         cxml::Document check("CompositionPlaylist", "build/test/write_mca_descriptors_to_mxf_test/cpl.xml");
 135
 136         vector<string> ignore;
 137         ignore.push_back ("InstanceID");
 138         ignore.push_back ("MCALinkID");
 139         ignore.push_back ("SoundfieldGroupLinkID");
 140
 141         check_xml (
 142                 dynamic_cast<xmlpp::Element*>(
 143                         ref.node_child("ReelList")->node_children("Reel").front()->node_child("AssetList")->node_child("CompositionMetadataAsset")->node_child("MCASubDescriptors")->node()
 144                         ),
 145                 dynamic_cast<xmlpp::Element*>(
 146                         check.node_child("ReelList")->node_children("Reel").front()->node_child("AssetList")->node_child("CompositionMetadataAsset")->node_child("MCASubDescriptors")->node()
 147                         ),
 148                 ignore,
 149                 true
 150                 );
 151 }
 152