src/lib/content_factory.cc

   1 /*
   2     Copyright (C) 2013-2016 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 /** @file  src/lib/content_factory.cc
  22  *  @brief Methods to create content objects.
  23  */
  24
  25 #include "ffmpeg_content.h"
  26 #include "audio_content.h"
  27 #include "image_content.h"
  28 #include "atmos_mxf_content.h"
  29 #include "string_text_file_content.h"
  30 #include "dcp_content.h"
  31 #include "dcp_subtitle_content.h"
  32 #include "util.h"
  33 #include "ffmpeg_audio_stream.h"
  34 #include "video_mxf_content.h"
  35 #include "film.h"
  36 #include "log_entry.h"
  37 #include "dcpomatic_log.h"
  38 #include "log.h"
  39 #include "compose.hpp"
  40 #include <libcxml/cxml.h>
  41 #include <dcp/smpte_subtitle_asset.h>
  42 #include <boost/algorithm/string.hpp>
  43
  44 #include "i18n.h"
  45
  46 using std::string;
  47 using std::list;
  48 using std::shared_ptr;
  49 using boost::optional;
  50
  51 /** Create a Content object from an XML node.
  52  *  @param node XML description.
  53  *  @param version XML state version.
  54  *  @param notes A list to which is added descriptions of any non-critial warnings / messages.
  55  *  @return Content object, or 0 if no content was recognised in the XML.
  56  */
  57 shared_ptr<Content>
  58 content_factory (cxml::ConstNodePtr node, int version, list<string>& notes)
  59 {
  60         string const type = node->string_child ("Type");
  61
  62         std::shared_ptr<Content> content;
  63
  64         if (type == "FFmpeg") {
  65                 /* SndfileContent is now handled by the FFmpeg code rather than by
  66                    separate libsndfile-based code.
  67                 */
  68                 content.reset (new FFmpegContent (node, version, notes));
  69         } else if (type == "Image") {
  70                 content.reset (new ImageContent (node, version));
  71         } else if (type == "Sndfile") {
  72                 /* SndfileContent is now handled by the FFmpeg code rather than by
  73                    separate libsndfile-based code.
  74                 */
  75                 content.reset (new FFmpegContent (node, version, notes));
  76
  77                 content->audio->set_stream (
  78                         AudioStreamPtr (
  79                                 new FFmpegAudioStream (
  80                                         "Stream", 0,
  81                                         node->number_child<int> ("AudioFrameRate"),
  82                                         node->number_child<Frame> ("AudioLength"),
  83                                         AudioMapping (node->node_child ("AudioMapping"), version)
  84                                         )
  85                                 )
  86                         );
  87
  88         } else if (type == "SubRip" || type == "TextSubtitle") {
  89                 content.reset (new StringTextFileContent (node, version));
  90         } else if (type == "DCP") {
  91                 content.reset (new DCPContent (node, version));
  92         } else if (type == "DCPSubtitle") {
  93                 content.reset (new DCPSubtitleContent (node, version));
  94         } else if (type == "VideoMXF") {
  95                 content.reset (new VideoMXFContent (node, version));
  96         } else if (type == "AtmosMXF") {
  97                 content.reset (new AtmosMXFContent (node, version));
  98         }
  99
 100         return content;
 101 }
 102
 103 /** Create some Content objects from a file or directory.
 104  *  @param path File or directory.
 105  *  @return Content objects.
 106  */
 107 list<shared_ptr<Content> >
 108 content_factory (boost::filesystem::path path)
 109 {
 110         list<shared_ptr<Content> > content;
 111
 112         if (boost::filesystem::is_directory (path)) {
 113
 114                 LOG_GENERAL ("Look in directory %1", path);
 115
 116                 if (boost::filesystem::is_empty (path)) {
 117                         return content;
 118                 }
 119
 120                 /* See if this is a set of images or a set of sound files */
 121
 122                 int image_files = 0;
 123                 int sound_files = 0;
 124                 int read = 0;
 125                 for (boost::filesystem::directory_iterator i(path); i != boost::filesystem::directory_iterator() && read < 10; ++i) {
 126
 127                         LOG_GENERAL ("Checking file %1", i->path());
 128
 129                         if (boost::starts_with (i->path().leaf().string(), ".")) {
 130                                 /* We ignore hidden files */
 131                                 LOG_GENERAL ("Ignored %1 (starts with .)", i->path());
 132                                 continue;
 133                         }
 134
 135                         if (!boost::filesystem::is_regular_file(i->path())) {
 136                                 /* Ignore things which aren't files (probably directories) */
 137                                 LOG_GENERAL ("Ignored %1 (not a regular file)", i->path());
 138                                 continue;
 139                         }
 140
 141                         if (valid_image_file (i->path ())) {
 142                                 ++image_files;
 143                         }
 144
 145                         if (valid_sound_file (i->path ())) {
 146                                 ++sound_files;
 147                         }
 148
 149                         ++read;
 150                 }
 151
 152                 if (image_files > 0 && sound_files == 0)  {
 153                         content.push_back (shared_ptr<Content> (new ImageContent(path)));
 154                 } else if (image_files == 0 && sound_files > 0) {
 155                         for (boost::filesystem::directory_iterator i(path); i != boost::filesystem::directory_iterator(); ++i) {
 156                                 content.push_back (shared_ptr<FFmpegContent> (new FFmpegContent(i->path())));
 157                         }
 158                 }
 159
 160         } else {
 161
 162                 shared_ptr<Content> single;
 163
 164                 string ext = path.extension().string ();
 165                 transform (ext.begin(), ext.end(), ext.begin(), ::tolower);
 166
 167                 if (valid_image_file (path)) {
 168                         single.reset (new ImageContent(path));
 169                 } else if (ext == ".srt" || ext == ".ssa" || ext == ".ass" || ext == ".stl") {
 170                         single.reset (new StringTextFileContent(path));
 171                 } else if (ext == ".xml") {
 172                         cxml::Document doc;
 173                         doc.read_file (path);
 174                         if (doc.root_name() == "DCinemaSecurityMessage") {
 175                                 throw KDMAsContentError ();
 176                         }
 177                         single.reset (new DCPSubtitleContent(path));
 178                 } else if (ext == ".mxf" && dcp::SMPTESubtitleAsset::valid_mxf (path)) {
 179                         single.reset (new DCPSubtitleContent(path));
 180                 } else if (ext == ".mxf" && VideoMXFContent::valid_mxf (path)) {
 181                         single.reset (new VideoMXFContent(path));
 182                 } else if (ext == ".mxf" && AtmosMXFContent::valid_mxf (path)) {
 183                         single.reset (new AtmosMXFContent(path));
 184                 }
 185
 186                 if (!single) {
 187                         single.reset (new FFmpegContent(path));
 188                 }
 189
 190                 content.push_back (single);
 191         }
 192
 193         return content;
 194 }