2 Copyright (C) 2014-2015 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
30 version. If you delete this exception statement from all source
31 files in the program, then also delete it here.
34 /** @file src/reel_asset.h
35 * @brief ReelAsset class.
38 #ifndef LIBDCP_REEL_ASSET_H
39 #define LIBDCP_REEL_ASSET_H
44 #include <boost/shared_ptr.hpp>
59 * @brief An entry in a <Reel> which refers to a use of a piece of content.
61 * This class encapsulates the XML that exists in a <Reel> to say
62 * that a piece of content is used in this reel. It does not
63 * describe the content itself (but links to an Asset object which does).
65 class ReelAsset : public Object
69 ReelAsset (boost::shared_ptr<Asset> asset, Fraction edit_rate, int64_t intrinsic_duration, int64_t entry_point);
70 explicit ReelAsset (boost::shared_ptr<const cxml::Node>);
72 virtual xmlpp::Node* write_to_cpl (xmlpp::Node* node, Standard standard) const;
73 virtual bool equals (boost::shared_ptr<const ReelAsset>, EqualityOptions, NoteHandler) const;
75 /** @return a Ref to our actual asset */
76 Ref const & asset_ref () const {
80 /** @return a Ref to our actual asset */
85 Fraction edit_rate () const {
89 int64_t intrinsic_duration () const {
90 return _intrinsic_duration;
93 void set_entry_point (int64_t e) {
97 int64_t entry_point () const {
101 void set_duration (int64_t d) {
105 int64_t duration () const {
109 /** @return the asset's hash, if this ReelAsset has been created from one,
110 * otherwise the hash written to the CPL for this asset (if present).
112 boost::optional<std::string> hash () const {
116 std::string annotation_text () const {
117 return _annotation_text;
120 void set_annotation_text (std::string at) {
121 _annotation_text = at;
127 boost::shared_ptr<T> asset_of_type () const {
128 return boost::dynamic_pointer_cast<T> (_asset_ref.asset ());
132 boost::shared_ptr<T> asset_of_type () {
133 return boost::dynamic_pointer_cast<T> (_asset_ref.asset ());
136 /** @return the node name that this asset uses in the CPL's <Reel> node
137 * e.g. MainPicture, MainSound etc.
139 virtual std::string cpl_node_name (Standard) const = 0;
141 /** @return Any attribute that should be used on the asset's node in the CPL */
142 virtual std::pair<std::string, std::string> cpl_node_attribute (Standard) const;
144 /** @return Any namespace that should be used on the asset's node in the CPL */
145 virtual std::pair<std::string, std::string> cpl_node_namespace (Standard) const;
147 /** Reference to the asset (MXF or XML file) that this reel entry
153 std::string _annotation_text; ///< The <AnnotationText> from the reel's entry for this asset
154 Fraction _edit_rate; ///< The <EditRate> from the reel's entry for this asset
155 int64_t _intrinsic_duration; ///< The <IntrinsicDuration> from the reel's entry for this asset
156 int64_t _entry_point; ///< The <EntryPoint> from the reel's entry for this asset
157 int64_t _duration; ///< The <Duration> from the reel's entry for this asset
158 /** Either our asset's computed hash or the hash read in from the CPL, if it's present */
159 boost::optional<std::string> _hash;