src/dcp.cc

   1 /*
   2     Copyright (C) 2012 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 /** @file  src/dcp.cc
  21  *  @brief A class to create a DCP.
  22  */
  23
  24 #include <sstream>
  25 #include <fstream>
  26 #include <iomanip>
  27 #include <cassert>
  28 #include <boost/filesystem.hpp>
  29 #include "dcp.h"
  30 #include "asset.h"
  31 #include "sound_asset.h"
  32 #include "picture_asset.h"
  33 #include "util.h"
  34 #include "metadata.h"
  35
  36 using namespace std;
  37 using namespace boost;
  38 using namespace libdcp;
  39
  40 DCP::DCP (string directory, string name, ContentType content_type, int fps, int length)
  41         : _directory (directory)
  42         , _name (name)
  43         , _content_type (content_type)
  44         , _fps (fps)
  45         , _length (length)
  46 {
  47
  48 }
  49
  50 void
  51 DCP::add_sound_asset (vector<string> const & files)
  52 {
  53         filesystem::path p;
  54         p /= _directory;
  55         p /= "audio.mxf";
  56         _assets.push_back (shared_ptr<SoundAsset> (new SoundAsset (files, p.string(), &Progress, _fps, _length)));
  57 }
  58
  59 void
  60 DCP::add_sound_asset (sigc::slot<string, Channel> get_path, int channels)
  61 {
  62         filesystem::path p;
  63         p /= _directory;
  64         p /= "audio.mxf";
  65         _assets.push_back (shared_ptr<SoundAsset> (new SoundAsset (get_path, p.string(), &Progress, _fps, _length, channels)));
  66 }
  67
  68 void
  69 DCP::add_picture_asset (vector<string> const & files, int width, int height)
  70 {
  71         filesystem::path p;
  72         p /= _directory;
  73         p /= "video.mxf";
  74         _assets.push_back (shared_ptr<PictureAsset> (new PictureAsset (files, p.string(), &Progress, _fps, _length, width, height)));
  75 }
  76
  77 void
  78 DCP::add_picture_asset (sigc::slot<string, int> get_path, int width, int height)
  79 {
  80         filesystem::path p;
  81         p /= _directory;
  82         p /= "video.mxf";
  83         _assets.push_back (shared_ptr<PictureAsset> (new PictureAsset (get_path, p.string(), &Progress, _fps, _length, width, height)));
  84 }
  85
  86 void
  87 DCP::write_xml () const
  88 {
  89         string cpl_uuid = make_uuid ();
  90         string cpl_path = write_cpl (cpl_uuid);
  91         int cpl_length = filesystem::file_size (cpl_path);
  92         string cpl_digest = make_digest (cpl_path, 0);
  93
  94         string pkl_uuid = make_uuid ();
  95         string pkl_path = write_pkl (pkl_uuid, cpl_uuid, cpl_digest, cpl_length);
  96
  97         write_volindex ();
  98         write_assetmap (cpl_uuid, cpl_length, pkl_uuid, filesystem::file_size (pkl_path));
  99 }
 100
 101 string
 102 DCP::write_cpl (string cpl_uuid) const
 103 {
 104         filesystem::path p;
 105         p /= _directory;
 106         stringstream s;
 107         s << cpl_uuid << "_cpl.xml";
 108         p /= s.str();
 109         ofstream cpl (p.string().c_str());
 110
 111         cpl << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
 112             << "<CompositionPlaylist xmlns=\"http://www.smpte-ra.org/schemas/429-7/2006/CPL\">\n"
 113             << "  <Id>urn:uuid:" << cpl_uuid << "</Id>\n"
 114             << "  <AnnotationText>" << _name << "</AnnotationText>\n"
 115             << "  <IssueDate>" << Metadata::instance()->issue_date << "</IssueDate>\n"
 116             << "  <Creator>" << Metadata::instance()->creator << "</Creator>\n"
 117             << "  <ContentTitleText>" << _name << "</ContentTitleText>\n"
 118             << "  <ContentKind>" << content_type_string (_content_type) << "</ContentKind>\n"
 119             << "  <ContentVersion>\n"
 120             << "    <Id>urn:uri:" << cpl_uuid << "_" << Metadata::instance()->issue_date << "</Id>\n"
 121             << "    <LabelText>" << cpl_uuid << "_" << Metadata::instance()->issue_date << "</LabelText>\n"
 122             << "  </ContentVersion>\n"
 123             << "  <RatingList/>\n"
 124             << "  <ReelList>\n";
 125
 126         cpl << "    <Reel>\n"
 127             << "      <Id>urn:uuid:" << make_uuid() << "</Id>\n"
 128             << "      <AssetList>\n";
 129
 130         for (list<shared_ptr<Asset> >::const_iterator i = _assets.begin(); i != _assets.end(); ++i) {
 131                 (*i)->write_to_cpl (cpl);
 132         }
 133
 134         cpl << "      </AssetList>\n"
 135             << "    </Reel>\n"
 136             << "  </ReelList>\n"
 137             << "</CompositionPlaylist>\n";
 138
 139         return p.string ();
 140 }
 141
 142 std::string
 143 DCP::write_pkl (string pkl_uuid, string cpl_uuid, string cpl_digest, int cpl_length) const
 144 {
 145         filesystem::path p;
 146         p /= _directory;
 147         stringstream s;
 148         s << pkl_uuid << "_pkl.xml";
 149         p /= s.str();
 150         ofstream pkl (p.string().c_str());
 151
 152         pkl << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
 153             << "<PackingList xmlns=\"http://www.smpte-ra.org/schemas/429-8/2007/PKL\">\n"
 154             << "  <Id>urn:uuid:" << pkl_uuid << "</Id>\n"
 155             << "  <AnnotationText>" << _name << "</AnnotationText>\n"
 156             << "  <IssueDate>" << Metadata::instance()->issue_date << "</IssueDate>\n"
 157             << "  <Issuer>" << Metadata::instance()->issuer << "</Issuer>\n"
 158             << "  <Creator>" << Metadata::instance()->creator << "</Creator>\n"
 159             << "  <AssetList>\n";
 160
 161         for (list<shared_ptr<Asset> >::const_iterator i = _assets.begin(); i != _assets.end(); ++i) {
 162                 (*i)->write_to_pkl (pkl);
 163         }
 164
 165         pkl << "    <Asset>\n"
 166             << "      <Id>urn:uuid:" << cpl_uuid << "</Id>\n"
 167             << "      <Hash>" << cpl_digest << "</Hash>\n"
 168             << "      <Size>" << cpl_length << "</Size>\n"
 169             << "      <Type>text/xml</Type>\n"
 170             << "    </Asset>\n";
 171
 172         pkl << "  </AssetList>\n"
 173             << "</PackingList>\n";
 174
 175         return p.string ();
 176 }
 177
 178 void
 179 DCP::write_volindex () const
 180 {
 181         filesystem::path p;
 182         p /= _directory;
 183         p /= "VOLINDEX.xml";
 184         ofstream vi (p.string().c_str());
 185
 186         vi << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
 187            << "<VolumeIndex xmlns=\"http://www.smpte-ra.org/schemas/429-9/2007/AM\">\n"
 188            << "  <Index>1</Index>\n"
 189            << "</VolumeIndex>\n";
 190 }
 191
 192 void
 193 DCP::write_assetmap (string cpl_uuid, int cpl_length, string pkl_uuid, int pkl_length) const
 194 {
 195         filesystem::path p;
 196         p /= _directory;
 197         p /= "ASSETMAP.xml";
 198         ofstream am (p.string().c_str());
 199
 200         am << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
 201            << "<AssetMap xmlns=\"http://www.smpte-ra.org/schemas/429-9/2007/AM\">\n"
 202            << "  <Id>urn:uuid:" << make_uuid() << "</Id>\n"
 203            << "  <Creator>" << Metadata::instance()->creator << "</Creator>\n"
 204            << "  <VolumeCount>1</VolumeCount>\n"
 205            << "  <IssueDate>" << Metadata::instance()->issue_date << "</IssueDate>\n"
 206            << "  <Issuer>" << Metadata::instance()->issuer << "</Issuer>\n"
 207            << "  <AssetList>\n";
 208
 209         am << "    <Asset>\n"
 210            << "      <Id>urn:uuid:" << pkl_uuid << "</Id>\n"
 211            << "      <PackingList>true</PackingList>\n"
 212            << "      <ChunkList>\n"
 213            << "        <Chunk>\n"
 214            << "          <Path>" << pkl_uuid << "_pkl.xml</Path>\n"
 215            << "          <VolumeIndex>1</VolumeIndex>\n"
 216            << "          <Offset>0</Offset>\n"
 217            << "          <Length>" << pkl_length << "</Length>\n"
 218            << "        </Chunk>\n"
 219            << "      </ChunkList>\n"
 220            << "    </Asset>\n";
 221
 222         am << "    <Asset>\n"
 223            << "      <Id>urn:uuid:" << cpl_uuid << "</Id>\n"
 224            << "      <ChunkList>\n"
 225            << "        <Chunk>\n"
 226            << "          <Path>" << cpl_uuid << "_cpl.xml</Path>\n"
 227            << "          <VolumeIndex>1</VolumeIndex>\n"
 228            << "          <Offset>0</Offset>\n"
 229            << "          <Length>" << cpl_length << "</Length>\n"
 230            << "        </Chunk>\n"
 231            << "      </ChunkList>\n"
 232            << "    </Asset>\n";
 233
 234         for (list<shared_ptr<Asset> >::const_iterator i = _assets.begin(); i != _assets.end(); ++i) {
 235                 (*i)->write_to_assetmap (am);
 236         }
 237
 238         am << "  </AssetList>\n"
 239            << "</AssetMap>\n";
 240 }
 241
 242 string
 243 DCP::content_type_string (ContentType type)
 244 {
 245         switch (type) {
 246         case FEATURE:
 247                 return "feature";
 248         case SHORT:
 249                 return "short";
 250         case TRAILER:
 251                 return "trailer";
 252         case TEST:
 253                 return "test";
 254         case TRANSITIONAL:
 255                 return "transitional";
 256         case RATING:
 257                 return "rating";
 258         case TEASER:
 259                 return "teaser";
 260         case POLICY:
 261                 return "policy";
 262         case PUBLIC_SERVICE_ANNOUNCEMENT:
 263                 return "psa";
 264         case ADVERTISEMENT:
 265                 return "advertisement";
 266         }
 267
 268         assert (false);
 269 }
 270