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 using boost::optional;
  54
  55
  56 /** Create a Content object from an XML node.
  57  *  @param node XML description.
  58  *  @param version XML state version.
  59  *  @param notes A list to which is added descriptions of any non-critial warnings / messages.
  60  *  @return Content object, or 0 if no content was recognised in the XML.
  61  */
  62 shared_ptr<Content>
  63 content_factory (cxml::ConstNodePtr node, int version, list<string>& notes)
  64 {
  65         auto const type = node->string_child ("Type");
  66
  67         std::shared_ptr<Content> content;
  68
  69         if (type == "FFmpeg") {
  70                 /* SndfileContent is now handled by the FFmpeg code rather than by
  71                    separate libsndfile-based code.
  72                 */
  73                 content.reset (new FFmpegContent(node, version, notes));
  74         } else if (type == "Image") {
  75                 content.reset (new ImageContent(node, version));
  76         } else if (type == "Sndfile") {
  77                 /* SndfileContent is now handled by the FFmpeg code rather than by
  78                    separate libsndfile-based code.
  79                 */
  80                 content.reset (new FFmpegContent(node, version, notes));
  81
  82                 content->audio->set_stream (
  83                         make_shared<FFmpegAudioStream>(
  84                                 "Stream", 0,
  85                                 node->number_child<int> ("AudioFrameRate"),
  86                                 node->number_child<Frame> ("AudioLength"),
  87                                 AudioMapping (node->node_child ("AudioMapping"), version)
  88                                 )
  89                         );
  90
  91         } else if (type == "SubRip" || type == "TextSubtitle") {
  92                 content.reset (new StringTextFileContent(node, version));
  93         } else if (type == "DCP") {
  94                 content.reset (new DCPContent(node, version));
  95         } else if (type == "DCPSubtitle") {
  96                 content.reset (new DCPSubtitleContent(node, version));
  97         } else if (type == "VideoMXF") {
  98                 content.reset (new VideoMXFContent(node, version));
  99         } else if (type == "AtmosMXF") {
 100                 content.reset (new AtmosMXFContent(node, version));
 101         }
 102
 103         return content;
 104 }
 105
 106
 107 /** Create some Content objects from a file or directory.
 108  *  @param path File or directory.
 109  *  @return Content objects.
 110  */
 111 list<shared_ptr<Content>>
 112 content_factory (boost::filesystem::path path)
 113 {
 114         list<shared_ptr<Content>> content;
 115
 116         if (boost::filesystem::is_directory (path)) {
 117
 118                 LOG_GENERAL ("Look in directory %1", path);
 119
 120                 if (boost::filesystem::is_empty (path)) {
 121                         return content;
 122                 }
 123
 124                 /* See if this is a set of images or a set of sound files */
 125
 126                 int image_files = 0;
 127                 int sound_files = 0;
 128                 int read = 0;
 129                 for (boost::filesystem::directory_iterator i(path); i != boost::filesystem::directory_iterator() && read < 10; ++i) {
 130
 131                         LOG_GENERAL ("Checking file %1", i->path());
 132
 133                         if (boost::starts_with (i->path().leaf().string(), ".")) {
 134                                 /* We ignore hidden files */
 135                                 LOG_GENERAL ("Ignored %1 (starts with .)", i->path());
 136                                 continue;
 137                         }
 138
 139                         if (!boost::filesystem::is_regular_file(i->path())) {
 140                                 /* Ignore things which aren't files (probably directories) */
 141                                 LOG_GENERAL ("Ignored %1 (not a regular file)", i->path());
 142                                 continue;
 143                         }
 144
 145                         if (valid_image_file(i->path())) {
 146                                 ++image_files;
 147                         }
 148
 149                         if (valid_sound_file(i->path())) {
 150                                 ++sound_files;
 151                         }
 152
 153                         ++read;
 154                 }
 155
 156                 if (image_files > 0 && sound_files == 0)  {
 157                         content.push_back (make_shared<ImageContent>(path));
 158                 } else if (image_files == 0 && sound_files > 0) {
 159                         for (auto i: boost::filesystem::directory_iterator(path)) {
 160                                 content.push_back (make_shared<FFmpegContent>(i.path()));
 161                         }
 162                 }
 163
 164         } else {
 165
 166                 shared_ptr<Content> single;
 167
 168                 auto ext = path.extension().string();
 169                 transform (ext.begin(), ext.end(), ext.begin(), ::tolower);
 170
 171                 if (valid_image_file (path)) {
 172                         single.reset (new ImageContent(path));
 173                 } else if (ext == ".srt" || ext == ".ssa" || ext == ".ass" || ext == ".stl") {
 174                         single.reset (new StringTextFileContent(path));
 175                 } else if (ext == ".xml") {
 176                         cxml::Document doc;
 177                         doc.read_file (path);
 178                         if (doc.root_name() == "DCinemaSecurityMessage") {
 179                                 throw KDMAsContentError ();
 180                         }
 181                         single.reset (new DCPSubtitleContent(path));
 182                 } else if (ext == ".mxf" && dcp::SMPTESubtitleAsset::valid_mxf(path)) {
 183                         single.reset (new DCPSubtitleContent(path));
 184                 } else if (ext == ".mxf" && VideoMXFContent::valid_mxf(path)) {
 185                         single.reset (new VideoMXFContent(path));
 186                 } else if (ext == ".mxf" && AtmosMXFContent::valid_mxf(path)) {
 187                         single.reset (new AtmosMXFContent(path));
 188                 }
 189
 190                 if (!single) {
 191                         single.reset (new FFmpegContent(path));
 192                 }
 193
 194                 content.push_back (single);
 195         }
 196
 197         return content;
 198 }