Support FCP XML files containing subtitles (#2909).

1 files changed, 82 insertions, 0 deletions

diff --git a/src/lib/fcpxml.cc b/src/lib/fcpxml.cc
new file mode 100644
index 000000000..49798381c
--- /dev/null
+++ b/src/lib/fcpxml.cc
@@ -0,0 +1,82 @@
+/*
+    Copyright (C) 2024 Carl Hetherington <cth@carlh.net>
+
+    This file is part of DCP-o-matic.
+
+    DCP-o-matic is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    DCP-o-matic is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+
+#include "fcpxml.h"
+#include <dcp/raw_convert.h>
+#include <libcxml/cxml.h>
+#include <boost/algorithm/string.hpp>
+#include <boost/filesystem.hpp>
+
+
+#include "i18n.h"
+
+
+using std::map;
+using std::string;
+using std::vector;
+
+
+static dcpomatic::ContentTime
+convert_time(string const& time)
+{
+	vector<string> parts;
+	boost::algorithm::split(parts, time, boost::is_any_of("/"));
+
+	if (parts.size() != 2 || parts[1].empty() || parts[1][parts[1].length() - 1] != 's') {
+		throw FCPXMLError(String::compose("Unexpected time format %1", time));
+	}
+
+	return dcpomatic::ContentTime{dcp::raw_convert<int64_t>(parts[0]) * dcpomatic::ContentTime::HZ / dcp::raw_convert<int64_t>(parts[1])};
+}
+
+
+dcpomatic::fcpxml::Sequence
+dcpomatic::fcpxml::load(boost::filesystem::path xml_file)
+{
+	cxml::Document doc("fcpxml");
+	doc.read_file(xml_file);
+
+	auto project = doc.node_child("project");
+
+	map<string, boost::filesystem::path> assets;
+	for (auto asset: project->node_child("resources")->node_children("asset")) {
+		assets[asset->string_attribute("name")] = asset->string_attribute("src");
+	}
+
+	auto sequence = Sequence{xml_file.parent_path()};
+	for (auto video: project->node_child("sequence")->node_child("spine")->node_children("video")) {
+		auto name = video->string_attribute("name");
+		auto iter = assets.find(name);
+		if (iter == assets.end()) {
+			throw FCPXMLError(String::compose(_("Video refers to missing asset %1"), name));
+		}
+
+		auto start = convert_time(video->string_attribute("offset"));
+		sequence.video.push_back(
+			{
+				iter->second,
+				dcpomatic::ContentTimePeriod(start, start + convert_time(video->string_attribute("duration")))
+			}
+		);
+	}
+
+	return sequence;
+}