Add basic CCAP support.

1 files changed, 111 insertions, 0 deletions

diff --git a/src/reel_closed_caption_asset.cc b/src/reel_closed_caption_asset.cc
new file mode 100644
index 00000000..4fb729c6
--- /dev/null
+++ b/src/reel_closed_caption_asset.cc
@@ -0,0 +1,111 @@
+/*
+    Copyright (C) 2012-2017 Carl Hetherington <cth@carlh.net>
+
+    This file is part of libdcp.
+
+    libdcp 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.
+
+    libdcp 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 libdcp.  If not, see <http://www.gnu.org/licenses/>.
+
+    In addition, as a special exception, the copyright holders give
+    permission to link the code of portions of this program with the
+    OpenSSL library under certain conditions as described in each
+    individual source file, and distribute linked combinations
+    including the two.
+
+    You must obey the GNU General Public License in all respects
+    for all of the code used other than OpenSSL.  If you modify
+    file(s) with this exception, you may extend this exception to your
+    version of the file(s), but you are not obligated to do so.  If you
+    do not wish to do so, delete this exception statement from your
+    version.  If you delete this exception statement from all source
+    files in the program, then also delete it here.
+*/
+
+/** @file  src/reel_closed_caption_asset.cc
+ *  @brief ReelClosedCaptionAsset class.
+ */
+
+#include "subtitle_asset.h"
+#include "reel_closed_caption_asset.h"
+#include "smpte_subtitle_asset.h"
+#include "dcp_assert.h"
+#include <libxml++/libxml++.h>
+
+using std::string;
+using std::pair;
+using std::make_pair;
+using boost::shared_ptr;
+using boost::dynamic_pointer_cast;
+using boost::optional;
+using namespace dcp;
+
+ReelClosedCaptionAsset::ReelClosedCaptionAsset (boost::shared_ptr<SubtitleAsset> asset, Fraction edit_rate, int64_t intrinsic_duration, int64_t entry_point)
+	: ReelAsset (asset, edit_rate, intrinsic_duration, entry_point)
+	, ReelMXF (dynamic_pointer_cast<SMPTESubtitleAsset>(asset) ? dynamic_pointer_cast<SMPTESubtitleAsset>(asset)->key_id() : optional<string>())
+{
+
+}
+
+ReelClosedCaptionAsset::ReelClosedCaptionAsset (boost::shared_ptr<const cxml::Node> node)
+	: ReelAsset (node)
+	, ReelMXF (node)
+{
+	node->ignore_child ("Language");
+	node->done ();
+}
+
+string
+ReelClosedCaptionAsset::cpl_node_name (Standard standard) const
+{
+	switch (standard) {
+	case INTEROP:
+		return "cc-cpl:MainClosedCaption";
+	case SMPTE:
+		return "tt:ClosedCaption";
+	}
+
+	DCP_ASSERT (false);
+}
+
+pair<string, string>
+ReelClosedCaptionAsset::cpl_node_namespace (Standard standard) const
+{
+	switch (standard) {
+	case INTEROP:
+		return make_pair ("http://www.digicine.com/PROTO-ASDCP-CC-CPL-20070926#", "cc-cpl");
+	case SMPTE:
+		return make_pair ("http://www.smpte-ra.org/schemas/429-12/2008/TT", "tt");
+	}
+
+	DCP_ASSERT (false);
+}
+
+string
+ReelClosedCaptionAsset::key_type () const
+{
+	return "MDSK";
+}
+
+void
+ReelClosedCaptionAsset::write_to_cpl (xmlpp::Node* node, Standard standard) const
+{
+	ReelAsset::write_to_cpl (node, standard);
+
+        if (key_id ()) {
+		/* Find our main tag */
+		xmlpp::Node* ms = find_child (node, cpl_node_name (standard));
+		/* Find <Hash> */
+		xmlpp::Node* hash = find_child (ms, "Hash");
+		ms->add_child_before (hash, "KeyId")->add_child_text ("urn:uuid:" + key_id().get ());
+	}
+}