Add very minimal Atmos asset.

3 files changed, 110 insertions, 0 deletions

diff --git a/src/atmos_asset.cc b/src/atmos_asset.cc
new file mode 100644
index 00000000..6c0c0e78
--- /dev/null
+++ b/src/atmos_asset.cc
@@ -0,0 +1,50 @@
+/*
+    Copyright (C) 2016 Carl Hetherington <cth@carlh.net>
+
+    This program 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.
+
+    This program 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 this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include "atmos_asset.h"
+#include "exceptions.h"
+#include "AS_DCP.h"
+
+using std::string;
+using namespace dcp;
+
+AtmosAsset::AtmosAsset (boost::filesystem::path file)
+	: Asset (file)
+{
+	ASDCP::ATMOS::MXFReader reader;
+	Kumu::Result_t r = reader.OpenRead (file.string().c_str());
+	if (ASDCP_FAILURE (r)) {
+		boost::throw_exception (MXFFileError ("could not open MXF file for reading", file.string(), r));
+	}
+
+	ASDCP::ATMOS::AtmosDescriptor desc;
+	if (ASDCP_FAILURE (reader.FillAtmosDescriptor (desc))) {
+		boost::throw_exception (DCPReadError ("could not read Atmos MXF information"));
+	}
+
+	_first_frame = desc.FirstFrame;
+	_max_channel_count = desc.MaxChannelCount;
+	_max_object_count = desc.MaxObjectCount;
+}
+
+string
+AtmosAsset::pkl_type (Standard) const
+{
+	return "application/mxf";
+}
diff --git a/src/atmos_asset.h b/src/atmos_asset.h
new file mode 100644
index 00000000..602beb31
--- /dev/null
+++ b/src/atmos_asset.h
@@ -0,0 +1,58 @@
+/*
+    Copyright (C) 2016 Carl Hetherington <cth@carlh.net>
+
+    This program 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.
+
+    This program 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 this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifndef LIBDCP_ATMOS_ASSET_H
+#define LIBDCP_ATMOS_ASSET_H
+
+#include "asset.h"
+#include "mxf.h"
+
+namespace dcp {
+
+class AtmosAsset : public Asset, public MXF
+{
+public:
+	AtmosAsset (boost::filesystem::path file);
+
+	std::string pkl_type (Standard) const;
+
+	/** @return frame number of the frame to align with the FFOA of the picture track */
+	int first_frame () const {
+		return _first_frame;
+	}
+
+	/** @return maximum number of channels in bitstream */
+	int max_channel_count () const {
+		return _max_channel_count;
+	}
+
+	/** @return maximum number of objects in bitstream */
+	int max_object_count () const {
+		return _max_object_count;
+	}
+
+private:
+	int _first_frame;
+	int _max_channel_count;
+	int _max_object_count;
+};
+
+}
+
+#endif
diff --git a/src/wscript b/src/wscript
index c6185790..4fbfdb9a 100644
--- a/src/wscript
+++ b/src/wscript
@@ -21,6 +21,7 @@ from waflib import TaskGen
 def build(bld):
     source = """
              asset.cc
+             atmos_asset.cc
              certificate_chain.cc
              certificate.cc
              colour_conversion.cc
@@ -83,6 +84,7 @@ def build(bld):
 
     headers = """
               asset.h
+              atmos_asset.h
               certificate_chain.h
               certificate.h
               chromaticity.h