src/reel.cc

   1 /*
   2     Copyright (C) 2014-2015 Carl Hetherington <cth@carlh.net>
   3
   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.
   8
   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.
  13
  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.
  17
  18 */
  19
  20 #include "reel.h"
  21 #include "util.h"
  22 #include "picture_asset.h"
  23 #include "mono_picture_asset.h"
  24 #include "stereo_picture_asset.h"
  25 #include "sound_asset.h"
  26 #include "subtitle_asset.h"
  27 #include "reel_mono_picture_asset.h"
  28 #include "reel_stereo_picture_asset.h"
  29 #include "reel_sound_asset.h"
  30 #include "reel_subtitle_asset.h"
  31 #include "decrypted_kdm_key.h"
  32 #include "decrypted_kdm.h"
  33 #include "interop_subtitle_asset.h"
  34 #include <libxml++/nodes/element.h>
  35
  36 using std::string;
  37 using std::list;
  38 using std::cout;
  39 using std::max;
  40 using boost::shared_ptr;
  41 using boost::dynamic_pointer_cast;
  42 using namespace dcp;
  43
  44 Reel::Reel (boost::shared_ptr<const cxml::Node> node)
  45         : Object (remove_urn_uuid (node->string_child ("Id")))
  46 {
  47         shared_ptr<cxml::Node> asset_list = node->node_child ("AssetList");
  48
  49         shared_ptr<cxml::Node> main_picture = asset_list->optional_node_child ("MainPicture");
  50         if (main_picture) {
  51                 _main_picture.reset (new ReelMonoPictureAsset (main_picture));
  52         }
  53
  54         shared_ptr<cxml::Node> main_stereoscopic_picture = asset_list->optional_node_child ("MainStereoscopicPicture");
  55         if (main_stereoscopic_picture) {
  56                 _main_picture.reset (new ReelStereoPictureAsset (main_stereoscopic_picture));
  57         }
  58
  59         shared_ptr<cxml::Node> main_sound = asset_list->optional_node_child ("MainSound");
  60         if (main_sound) {
  61                 _main_sound.reset (new ReelSoundAsset (main_sound));
  62         }
  63
  64         shared_ptr<cxml::Node> main_subtitle = asset_list->optional_node_child ("MainSubtitle");
  65         if (main_subtitle) {
  66                 _main_subtitle.reset (new ReelSubtitleAsset (main_subtitle));
  67         }
  68
  69         node->ignore_child ("AnnotationText");
  70         node->done ();
  71 }
  72
  73 void
  74 Reel::write_to_cpl (xmlpp::Element* node, Standard standard) const
  75 {
  76         xmlpp::Element* reel = node->add_child ("Reel");
  77         reel->add_child("Id")->add_child_text ("urn:uuid:" + make_uuid());
  78         xmlpp::Element* asset_list = reel->add_child ("AssetList");
  79
  80         if (_main_picture && dynamic_pointer_cast<ReelMonoPictureAsset> (_main_picture)) {
  81                 /* Mono pictures come before other stuff... */
  82                 _main_picture->write_to_cpl (asset_list, standard);
  83         }
  84
  85         if (_main_sound) {
  86                 _main_sound->write_to_cpl (asset_list, standard);
  87         }
  88
  89         if (_main_subtitle) {
  90                 _main_subtitle->write_to_cpl (asset_list, standard);
  91         }
  92
  93         if (_main_picture && dynamic_pointer_cast<ReelStereoPictureAsset> (_main_picture)) {
  94                 /* ... but stereo pictures must come after */
  95                 _main_picture->write_to_cpl (asset_list, standard);
  96         }
  97 }
  98
  99 bool
 100 Reel::equals (boost::shared_ptr<const Reel> other, EqualityOptions opt, NoteHandler note) const
 101 {
 102         if ((_main_picture && !other->_main_picture) || (!_main_picture && other->_main_picture)) {
 103                 note (DCP_ERROR, "Reel: assets differ");
 104                 return false;
 105         }
 106
 107         if (_main_picture && !_main_picture->equals (other->_main_picture, opt, note)) {
 108                 return false;
 109         }
 110
 111         if ((_main_sound && !other->_main_sound) || (!_main_sound && other->_main_sound)) {
 112                 note (DCP_ERROR, "Reel: assets differ");
 113                 return false;
 114         }
 115
 116         if (_main_sound && !_main_sound->equals (other->_main_sound, opt, note)) {
 117                 return false;
 118         }
 119
 120         if ((_main_subtitle && !other->_main_subtitle) || (!_main_subtitle && other->_main_subtitle)) {
 121                 note (DCP_ERROR, "Reel: assets differ");
 122                 return false;
 123         }
 124
 125         if (_main_subtitle && !_main_subtitle->equals (other->_main_subtitle, opt, note)) {
 126                 return false;
 127         }
 128
 129         return true;
 130 }
 131
 132 bool
 133 Reel::encrypted () const
 134 {
 135         return ((_main_picture && _main_picture->encrypted ()) || (_main_sound && _main_sound->encrypted ()));
 136 }
 137
 138 void
 139 Reel::add (DecryptedKDM const & kdm)
 140 {
 141         list<DecryptedKDMKey> keys = kdm.keys ();
 142
 143         for (list<DecryptedKDMKey>::iterator i = keys.begin(); i != keys.end(); ++i) {
 144                 if (i->id() == _main_picture->key_id()) {
 145                         _main_picture->asset()->set_key (i->key ());
 146                 }
 147                 if (i->id() == _main_sound->key_id()) {
 148                         _main_sound->asset()->set_key (i->key ());
 149                 }
 150         }
 151 }
 152
 153 void
 154 Reel::add (shared_ptr<ReelAsset> asset)
 155 {
 156         shared_ptr<ReelPictureAsset> p = dynamic_pointer_cast<ReelPictureAsset> (asset);
 157         shared_ptr<ReelSoundAsset> so = dynamic_pointer_cast<ReelSoundAsset> (asset);
 158         shared_ptr<ReelSubtitleAsset> su = dynamic_pointer_cast<ReelSubtitleAsset> (asset);
 159         if (p) {
 160                 _main_picture = p;
 161         } else if (so) {
 162                 _main_sound = so;
 163         } else if (su) {
 164                 _main_subtitle = su;
 165         }
 166 }
 167
 168 void
 169 Reel::resolve_refs (list<shared_ptr<Asset> > assets)
 170 {
 171         if (_main_picture) {
 172                 _main_picture->asset_ref().resolve (assets);
 173         }
 174
 175         if (_main_sound) {
 176                 _main_sound->asset_ref().resolve (assets);
 177         }
 178
 179         if (_main_subtitle) {
 180                 _main_subtitle->asset_ref().resolve (assets);
 181
 182                 /* Interop subtitle handling is all special cases */
 183                 shared_ptr<InteropSubtitleAsset> iop = dynamic_pointer_cast<InteropSubtitleAsset> (_main_subtitle->asset_ref().asset ());
 184                 if (iop) {
 185                         iop->resolve_fonts (assets);
 186                 }
 187         }
 188 }
 189
 190 int64_t
 191 Reel::duration () const
 192 {
 193         int64_t d = 0;
 194
 195         if (_main_picture) {
 196                 d = max (d, _main_picture->duration ());
 197         }
 198         if (_main_sound) {
 199                 d = max (d, _main_sound->duration ());
 200         }
 201         if (_main_subtitle) {
 202                 d = max (d, _main_subtitle->duration ());
 203         }
 204
 205         return d;
 206 }