Rearrange subtitle font management.

With this change each subtitle coming out of the player has a reference
to a dcpomatic::Font that belongs to the TextContent.  This hopefully
solves a few problems which all basically stemmed from the fact that
previously the decoders/player were deciding what the font ID in the
output DCP would be - they can't do that properly.

1 files changed, 45 insertions, 0 deletions

diff --git a/src/lib/font_id_map.cc b/src/lib/font_id_map.cc
new file mode 100644
index 000000000..15654db6b
--- /dev/null
+++ b/src/lib/font_id_map.cc
@@ -0,0 +1,45 @@
+/*
+    Copyright (C) 2022 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 "dcpomatic_assert.h"
+#include "font.h"
+#include "font_id_map.h"
+
+
+using std::shared_ptr;
+using std::string;
+
+
+std::string
+FontIdMap::get(shared_ptr<dcpomatic::Font> font) const
+{
+	auto iter = _map.find(font);
+	DCPOMATIC_ASSERT(iter != _map.end());
+	return iter->second;
+}
+
+
+void
+FontIdMap::put(shared_ptr<dcpomatic::Font> font, string id)
+{
+	_map[font] = id;
+}
+