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
  22 /** @file  src/lib/content_factory.cc
  23  *  @brief Methods to create content objects.
  24  */
  25
  26
  27 #include "ffmpeg_content.h"
  28 #include "audio_content.h"
  29 #include "image_content.h"
  30 #include "atmos_mxf_content.h"
  31 #include "string_text_file_content.h"
  32 #include "dcp_content.h"
  33 #include "dcp_subtitle_content.h"
  34 #include "util.h"
  35 #include "ffmpeg_audio_stream.h"
  36 #include "video_mxf_content.h"
  37 #include "film.h"
  38 #include "log_entry.h"
  39 #include "dcpomatic_log.h"
  40 #include "log.h"
  41 #include "compose.hpp"
  42 #include <libcxml/cxml.h>
  43 #include <dcp/smpte_subtitle_asset.h>
  44 #include <boost/algorithm/string.hpp>
  45
  46 #include "i18n.h"
  47
  48
  49 using std::list;
  50 using std::make_shared;
  51 using std::shared_ptr;
  52 using std::string;
  53
  54
  55 /** Create a Content object from an XML node.
  56  *  @param node XML description.
  57  *  @param version XML state version.
  58  *  @param notes A list to which is added descriptions of any non-critial warnings / messages.
  59  *  @return Content object, or 0 if no content was recognised in the XML.
  60  */
  61 shared_ptr<Content>
  62 content_factory (cxml::ConstNodePtr node, int version, list<string>& notes)
  63 {
  64         auto const type = node->string_child ("Type");
  65
  66         std::shared_ptr<Content> content;
  67
  68         if (type == "FFmpeg") {
  69                 /* SndfileContent is now handled by the FFmpeg code rather than by
  70                    separate libsndfile-based code.
  71                 */
  72                 content = make_shared<FFmpegContent>(node, version, notes);
  73         } else if (type == "Image") {
  74                 content = make_shared<ImageContent>(node, version);
  75         } else if (type == "Sndfile") {
  76                 /* SndfileContent is now handled by the FFmpeg code rather than by
  77                    separate libsndfile-based code.
  78                 */
  79                 content = make_shared<FFmpegContent>(node, version, notes);
  80
  81                 content->audio->set_stream (
  82                         make_shared<FFmpegAudioStream>(
  83                                 "Stream", 0,
  84                                 node->number_child<int> ("AudioFrameRate"),
  85                                 node->number_child<Frame> ("AudioLength"),
  86                                 AudioMapping (node->node_child ("AudioMapping"), version)
  87                                 )
  88                         );
  89
  90         } else if (type == "SubRip" || type == "TextSubtitle") {
  91                 content = make_shared<StringTextFileContent>(node, version, notes);
  92         } else if (type == "DCP") {
  93                 content = make_shared<DCPContent>(node, version);
  94         } else if (type == "DCPSubtitle") {
  95                 content = make_shared<DCPSubtitleContent>(node, version);
  96         } else if (type == "VideoMXF") {
  97                 content = make_shared<VideoMXFContent>(node, version);
  98         } else if (type == "AtmosMXF") {
  99                 content = make_shared<AtmosMXFContent>(node, version);
 100         }
 101
 102         return content;
 103 }
 104
 105
 106 /** Create some Content objects from a file or directory.
 107  *  @param path File or directory.
 108  *  @return Content objects.
 109  */
 110 list<shared_ptr<Content>>
 111 content_factory (boost::filesystem::path path)
 112 {
 113         list<shared_ptr<Content>> content;
 114
 115         if (boost::filesystem::is_directory (path)) {
 116
 117                 LOG_GENERAL ("Look in directory %1", path);
 118
 119                 if (boost::filesystem::is_empty (path)) {
 120                         return content;
 121                 }
 122
 123                 /* See if this is a set of images or a set of sound files */
 124
 125                 int image_files = 0;
 126                 int sound_files = 0;
 127                 int read = 0;
 128                 for (boost::filesystem::directory_iterator i(path); i != boost::filesystem::directory_iterator() && read < 10; ++i) {
 129
 130                         LOG_GENERAL ("Checking file %1", i->path());
 131
 132                         if (boost::starts_with (i->path().leaf().string(), ".")) {
 133                                 /* We ignore hidden files */
 134                                 LOG_GENERAL ("Ignored %1 (starts with .)", i->path());
 135                                 continue;
 136                         }
 137
 138                         if (!boost::filesystem::is_regular_file(i->path())) {
 139                                 /* Ignore things which aren't files (probably directories) */
 140                                 LOG_GENERAL ("Ignored %1 (not a regular file)", i->path());
 141                                 continue;
 142                         }
 143
 144                         if (valid_image_file(i->path())) {
 145                                 ++image_files;
 146                         }
 147
 148                         if (valid_sound_file(i->path())) {
 149                                 ++sound_files;
 150                         }
 151
 152                         ++read;
 153                 }
 154
 155                 if (image_files > 0 && sound_files == 0)  {
 156                         content.push_back (make_shared<ImageContent>(path));
 157                 } else if (image_files == 0 && sound_files > 0) {
 158                         for (auto i: boost::filesystem::directory_iterator(path)) {
 159                                 content.push_back (make_shared<FFmpegContent>(i.path()));
 160                         }
 161                 }
 162
 163         } else {
 164
 165                 shared_ptr<Content> single;
 166
 167                 auto ext = path.extension().string();
 168                 transform (ext.begin(), ext.end(), ext.begin(), ::tolower);
 169
 170                 if (valid_image_file (path)) {
 171                         single = make_shared<ImageContent>(path);
 172                 } else if (ext == ".srt" || ext == ".ssa" || ext == ".ass" || ext == ".stl") {
 173                         single = make_shared<StringTextFileContent>(path);
 174                 } else if (ext == ".xml") {
 175                         cxml::Document doc;
 176                         doc.read_file (path);
 177                         if (doc.root_name() == "DCinemaSecurityMessage") {
 178                                 throw KDMAsContentError ();
 179                         }
 180                         single = make_shared<DCPSubtitleContent>(path);
 181                 } else if (ext == ".mxf" && dcp::SMPTESubtitleAsset::valid_mxf(path)) {
 182                         single = make_shared<DCPSubtitleContent>(path);
 183                 } else if (ext == ".mxf" && VideoMXFContent::valid_mxf(path)) {
 184                         single = make_shared<VideoMXFContent>(path);
 185                 } else if (ext == ".mxf" && AtmosMXFContent::valid_mxf(path)) {
 186                         single = make_shared<AtmosMXFContent>(path);
 187                 }
 188
 189                 if (!single) {
 190                         single = make_shared<FFmpegContent>(path);
 191                 }
 192
 193                 content.push_back (single);
 194         }
 195
 196         return content;
 197 }