1 files changed, 87 insertions, 0 deletions
diff --git a/src/asset_factory.cc b/src/asset_factory.cc
new file mode 100644
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--- /dev/null
+++ b/src/asset_factory.cc
@@ -0,0 +1,87 @@
+/*
+    Copyright (C) 2018 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.
+*/
+
+#include "mono_picture_asset.h"
+#include "stereo_picture_asset.h"
+#include "sound_asset.h"
+#include "stereo_picture_asset.h"
+#include "smpte_subtitle_asset.h"
+#include "atmos_asset.h"
+#include "compose.hpp"
+#include "asset_factory.h"
+#include <boost/shared_ptr.hpp>
+
+using boost::shared_ptr;
+using namespace dcp;
+
+shared_ptr<Asset>
+dcp::asset_factory (boost::filesystem::path path, bool ignore_incorrect_picture_mxf_type)
+{
+	/* XXX: asdcplib does not appear to support discovery of read MXFs standard
+	   (Interop / SMPTE)
+	*/
+
+	ASDCP::EssenceType_t type;
+	if (ASDCP::EssenceType (path.string().c_str(), type) != ASDCP::RESULT_OK) {
+		throw DCPReadError ("Could not find essence type");
+	}
+	switch (type) {
+	case ASDCP::ESS_UNKNOWN:
+	case ASDCP::ESS_MPEG2_VES:
+		throw DCPReadError ("MPEG2 video essences are not supported");
+	case ASDCP::ESS_JPEG_2000:
+		try {
+			return shared_ptr<MonoPictureAsset> (new MonoPictureAsset (path));
+		} catch (dcp::MXFFileError& e) {
+			if (ignore_incorrect_picture_mxf_type && e.number() == ASDCP::RESULT_SFORMAT) {
+				/* Tried to load it as mono but the error says it's stereo; try that instead */
+				return shared_ptr<StereoPictureAsset> (new StereoPictureAsset (path));
+			} else {
+				throw;
+			}
+		}
+	case ASDCP::ESS_PCM_24b_48k:
+	case ASDCP::ESS_PCM_24b_96k:
+		return shared_ptr<SoundAsset> (new SoundAsset (path));
+	case ASDCP::ESS_JPEG_2000_S:
+		return shared_ptr<StereoPictureAsset> (new StereoPictureAsset (path));
+	case ASDCP::ESS_TIMED_TEXT:
+		return shared_ptr<SMPTESubtitleAsset> (new SMPTESubtitleAsset (path));
+	case ASDCP::ESS_DCDATA_DOLBY_ATMOS:
+		return shared_ptr<AtmosAsset> (new AtmosAsset (path));
+	default:
+		throw DCPReadError (String::compose ("Unknown MXF essence type %1 in %2", int(type), path.string()));
+	}
+
+	return shared_ptr<Asset>();
+}