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/>.
20 /** @file src/asset.cc
24 #include "raw_convert.h"
27 #include "exceptions.h"
28 #include "dcp_assert.h"
29 #include "compose.hpp"
30 #include <libxml++/libxml++.h>
31 #include <boost/algorithm/string.hpp>
34 using boost::function;
35 using boost::optional;
38 /** Create an Asset with a randomly-generated ID */
44 /** Create an Asset from a given file.
45 * @param file File name.
47 Asset::Asset (boost::filesystem::path file)
53 Asset::Asset (string id, boost::filesystem::path file)
61 Asset::write_to_pkl (xmlpp::Node* node, boost::filesystem::path root, Standard standard) const
63 DCP_ASSERT (!_file.empty ());
65 optional<boost::filesystem::path> path = relative_to_root (
66 boost::filesystem::canonical (root),
67 boost::filesystem::canonical (_file)
71 /* The path of this asset is not within our DCP, so we assume it's an external
77 xmlpp::Node* asset = node->add_child ("Asset");
78 asset->add_child("Id")->add_child_text ("urn:uuid:" + _id);
79 asset->add_child("AnnotationText")->add_child_text (_id);
80 asset->add_child("Hash")->add_child_text (hash ());
81 asset->add_child("Size")->add_child_text (raw_convert<string> (boost::filesystem::file_size (_file)));
82 asset->add_child("Type")->add_child_text (pkl_type (standard));
86 Asset::write_to_assetmap (xmlpp::Node* node, boost::filesystem::path root) const
88 DCP_ASSERT (!_file.empty ());
90 optional<boost::filesystem::path> path = relative_to_root (
91 boost::filesystem::canonical (root),
92 boost::filesystem::canonical (_file)
96 /* The path of this asset is not within our DCP, so we assume it's an external
102 xmlpp::Node* asset = node->add_child ("Asset");
103 asset->add_child("Id")->add_child_text ("urn:uuid:" + _id);
104 xmlpp::Node* chunk_list = asset->add_child ("ChunkList");
105 xmlpp::Node* chunk = chunk_list->add_child ("Chunk");
107 chunk->add_child("Path")->add_child_text (path.get().generic_string());
108 chunk->add_child("VolumeIndex")->add_child_text ("1");
109 chunk->add_child("Offset")->add_child_text ("0");
110 chunk->add_child("Length")->add_child_text (raw_convert<string> (boost::filesystem::file_size (_file)));
114 Asset::hash (function<void (float)> progress) const
116 DCP_ASSERT (!_file.empty ());
119 _hash = make_digest (_file, progress);
126 Asset::equals (boost::shared_ptr<const Asset> other, EqualityOptions, NoteHandler note) const
128 if (_hash != other->_hash) {
129 note (DCP_ERROR, "Asset: hashes differ");
136 /** Set the file that holds this asset on disk. Calling this function
137 * clears this object's store of its hash, so you should call ::hash
140 * @param file New file's path.
143 Asset::set_file (boost::filesystem::path file) const
145 _file = boost::filesystem::absolute (file);
146 _hash = optional<string> ();
150 Asset::set_hash (string hash)