src/lib/dcp_digest_file.cc

   1 /*
   2     Copyright (C) 2021 Carl Hetherington <cth@carlh.net>
   3
   4     This file is part of DCP-o-matic.
   5
   6     DCP-o-matic 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     DCP-o-matic 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 DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 */
  20
  21
  22 #include "dcp_digest_file.h"
  23 #include <dcp/cpl.h>
  24 #include <dcp/mxf.h>
  25 #include <dcp/reel.h>
  26 #include <dcp/reel_picture_asset.h>
  27 #include <dcp/reel_sound_asset.h>
  28 #include <dcp/reel_subtitle_asset.h>
  29 #include <dcp/reel_smpte_subtitle_asset.h>
  30 #include <dcp/warnings.h>
  31 LIBDCP_DISABLE_WARNINGS
  32 #include <libxml++/libxml++.h>
  33 LIBDCP_ENABLE_WARNINGS
  34
  35
  36 using std::dynamic_pointer_cast;
  37 using std::shared_ptr;
  38 using std::string;
  39
  40
  41 template <class R, class A>
  42 void add_asset(string film_key, shared_ptr<R> reel_asset, shared_ptr<A> asset, xmlpp::Element* reel, string name)
  43 {
  44         if (asset) {
  45                 auto out = reel->add_child(name);
  46                 out->add_child("Id")->add_child_text("urn:uuid:" + asset->id());
  47                 if (reel_asset->annotation_text()) {
  48                         out->add_child("AnnotationText")->add_child_text(reel_asset->annotation_text().get());
  49                 }
  50                 if (asset->key_id()) {
  51                         out->add_child("KeyId")->add_child_text("urn:uuid:" + asset->key_id().get());
  52                         out->add_child("Key")->add_child_text(asset->key() ? asset->key()->hex() : film_key);
  53                 }
  54         }
  55 };
  56
  57
  58 void
  59 write_dcp_digest_file (
  60         boost::filesystem::path path,
  61         shared_ptr<dcp::CPL> cpl,
  62         string film_key
  63         )
  64 {
  65         xmlpp::Document doc;
  66         auto root = doc.create_root_node("FHG_DCP_DIGEST", "http://www.fhg.de/2009/04/02/dcpdig");
  67         root->add_child("InteropMode")->add_child_text(cpl->standard() == dcp::Standard::INTEROP ? "true" : "false");
  68         auto composition = root->add_child("CompositionList")->add_child("Composition");
  69         composition->add_child("Id")->add_child_text("urn:uuid:" + cpl->id());
  70         composition->add_child("AnnotationText")->add_child_text(cpl->annotation_text().get_value_or(""));
  71         composition->add_child("ContentTitleText")->add_child_text(cpl->content_title_text());
  72         auto reel_list = composition->add_child("ReelList");
  73         for (auto in_reel: cpl->reels()) {
  74                 auto out_reel = reel_list->add_child("Reel");
  75                 out_reel->add_child("Id")->add_child_text("urn:uuid:" + in_reel->id());
  76                 out_reel->add_child("AnnotationText");
  77                 if (in_reel->main_picture()) {
  78                         add_asset(film_key, in_reel->main_picture(), in_reel->main_picture()->asset(), out_reel, "MainPicture");
  79                 }
  80                 if (in_reel->main_sound()) {
  81                         add_asset(film_key, in_reel->main_sound(), in_reel->main_sound()->asset(), out_reel, "MainSound");
  82                 }
  83                 if (auto smpte_sub = dynamic_pointer_cast<dcp::ReelSMPTESubtitleAsset>(in_reel->main_subtitle())) {
  84                         add_asset(film_key, smpte_sub, smpte_sub->smpte_asset(), out_reel, "MainSubtitle");
  85                 }
  86         }
  87         doc.write_to_file_formatted(path.string());
  88 }
  89