2 Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
4 This file is part of libdcp.
6 libdcp 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.
11 libdcp 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.
16 You should have received a copy of the GNU General Public License
17 along with libdcp. If not, see <http://www.gnu.org/licenses/>.
19 In addition, as a special exception, the copyright holders give
20 permission to link the code of portions of this program with the
21 OpenSSL library under certain conditions as described in each
22 individual source file, and distribute linked combinations
25 You must obey the GNU General Public License in all respects
26 for all of the code used other than OpenSSL. If you modify
27 file(s) with this exception, you may extend this exception to your
28 version of the file(s), but you are not obligated to do so. If you
29 do not wish to do so, delete this exception statement from your
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31 files in the program, then also delete it here.
35 /** @file src/subtitle_asset.h
36 * @brief SubtitleAsset class
40 #ifndef LIBDCP_SUBTITLE_ASSET_H
41 #define LIBDCP_SUBTITLE_ASSET_H
44 #include "array_data.h"
47 #include "subtitle_string.h"
48 #include <libcxml/cxml.h>
49 #include <boost/shared_array.hpp>
58 struct interop_dcp_font_test;
59 struct smpte_dcp_font_test;
60 struct pull_fonts_test1;
61 struct pull_fonts_test2;
62 struct pull_fonts_test3;
83 /** @class SubtitleAsset
84 * @brief A parent for classes representing a file containing subtitles
86 * This class holds a list of Subtitle objects which it can extract
87 * from the appropriate part of either an Interop or SMPTE XML file.
88 * Its subclasses InteropSubtitleAsset and SMPTESubtitleAsset handle the
89 * differences between the two types.
91 class SubtitleAsset : public Asset
95 explicit SubtitleAsset (boost::filesystem::path file);
98 std::shared_ptr<const Asset>,
103 std::vector<std::shared_ptr<const Subtitle>> subtitles_during (Time from, Time to, bool starting) const;
104 std::vector<std::shared_ptr<const Subtitle>> subtitles_in_reel(std::shared_ptr<const dcp::ReelAsset> asset) const;
105 std::vector<std::shared_ptr<const Subtitle>> subtitles () const;
107 virtual void add (std::shared_ptr<Subtitle>);
108 virtual void add_font (std::string id, dcp::ArrayData data) = 0;
109 std::map<std::string, ArrayData> font_data () const;
110 std::map<std::string, boost::filesystem::path> font_filenames () const;
112 virtual void write (boost::filesystem::path) const = 0;
113 virtual std::string xml_as_string () const = 0;
115 Time latest_subtitle_out () const;
117 void fix_empty_font_ids ();
119 virtual std::vector<std::shared_ptr<LoadFontNode>> load_font_nodes () const = 0;
121 virtual int time_code_rate () const = 0;
123 /** @return Raw XML loaded from, or written to, an on-disk asset, or boost::none if
124 * - this object was not created from an existing on-disk asset and has not been written to one, or
125 * - this asset is encrypted and no key is available.
127 virtual boost::optional<std::string> raw_xml () const {
132 friend struct ::interop_dcp_font_test;
133 friend struct ::smpte_dcp_font_test;
136 boost::optional<std::string> font_id;
137 boost::optional<int64_t> size;
138 boost::optional<float> aspect_adjust;
139 boost::optional<bool> italic;
140 boost::optional<bool> bold;
141 boost::optional<bool> underline;
142 boost::optional<Colour> colour;
143 boost::optional<Effect> effect;
144 boost::optional<Colour> effect_colour;
145 boost::optional<float> h_position;
146 boost::optional<HAlign> h_align;
147 boost::optional<float> v_position;
148 boost::optional<VAlign> v_align;
149 boost::optional<Direction> direction;
150 boost::optional<Time> in;
151 boost::optional<Time> out;
152 boost::optional<Time> fade_up_time;
153 boost::optional<Time> fade_down_time;
158 boost::optional<Type> type;
161 void parse_subtitles (xmlpp::Element const * node, std::vector<ParseState>& state, boost::optional<int> tcr, Standard standard);
162 ParseState font_node_state (xmlpp::Element const * node, Standard standard) const;
163 ParseState text_node_state (xmlpp::Element const * node) const;
164 ParseState image_node_state (xmlpp::Element const * node) const;
165 ParseState subtitle_node_state (xmlpp::Element const * node, boost::optional<int> tcr) const;
166 Time fade_time (xmlpp::Element const * node, std::string name, boost::optional<int> tcr) const;
167 void position_align (ParseState& ps, xmlpp::Element const * node) const;
169 void subtitles_as_xml (xmlpp::Element* root, int time_code_rate, Standard standard) const;
171 /** All our subtitles, in no particular order */
172 std::vector<std::shared_ptr<Subtitle>> _subtitles;
177 Font (std::string load_id_, std::string uuid_, boost::filesystem::path file_)
184 Font (std::string load_id_, std::string uuid_, ArrayData data_)
193 /** .ttf file that this data was last written to, if applicable */
194 mutable boost::optional<boost::filesystem::path> file;
197 /** TTF font data that we need */
198 std::vector<Font> _fonts;
200 /** The raw XML data that we read from or wrote to our asset; useful for validation */
201 mutable boost::optional<std::string> _raw_xml;
204 friend struct ::pull_fonts_test1;
205 friend struct ::pull_fonts_test2;
206 friend struct ::pull_fonts_test3;
208 void maybe_add_subtitle (std::string text, std::vector<ParseState> const & parse_state, Standard standard);
210 static void pull_fonts (std::shared_ptr<order::Part> part);