1 files changed, 116 insertions, 0 deletions
diff --git a/src/stereo_picture_asset_writer.cc b/src/stereo_picture_asset_writer.cc
new file mode 100644
index 00000000..fc7290a8
--- /dev/null
+++ b/src/stereo_picture_asset_writer.cc
@@ -0,0 +1,116 @@
+/*
+    Copyright (C) 2012-2013 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 "AS_DCP.h"
+#include "KM_fileio.h"
+#include "stereo_picture_asset_writer.h"
+#include "exceptions.h"
+#include "picture_asset.h"
+
+#include "picture_asset_writer_common.cc"
+
+using std::istream;
+using std::ostream;
+using std::string;
+using boost::shared_ptr;
+using namespace libdcp;
+
+struct StereoPictureAssetWriter::ASDCPState : public ASDCPStateBase
+{
+	ASDCP::JP2K::MXFSWriter mxf_writer;
+};
+
+StereoPictureAssetWriter::StereoPictureAssetWriter (PictureAsset* asset, bool overwrite)
+	: PictureAssetWriter (asset, overwrite)
+	, _state (new StereoPictureAssetWriter::ASDCPState)
+	, _next_eye (EYE_LEFT)
+{
+	_state->encryption_context = asset->encryption_context ();
+}
+
+void
+StereoPictureAssetWriter::start (uint8_t* data, int size)
+{
+	libdcp::start (this, _state, _asset, data, size);
+}
+
+/** Write a frame for one eye.  Frames must be written left, then right, then left etc.
+ *  @param data JPEG2000 data.
+ *  @param size Size of data.
+ */
+FrameInfo
+StereoPictureAssetWriter::write (uint8_t* data, int size)
+{
+	assert (!_finalized);
+
+	if (!_started) {
+		start (data, size);
+	}
+
+ 	if (ASDCP_FAILURE (_state->j2k_parser.OpenReadFrame (data, size, _state->frame_buffer))) {
+ 		boost::throw_exception (MiscError ("could not parse J2K frame"));
+ 	}
+
+	uint64_t const before_offset = _state->mxf_writer.Tell ();
+
+	string hash;
+	if (ASDCP_FAILURE (
+		    _state->mxf_writer.WriteFrame (
+			    _state->frame_buffer,
+			    _next_eye == EYE_LEFT ? ASDCP::JP2K::SP_LEFT : ASDCP::JP2K::SP_RIGHT,
+			    _state->encryption_context,
+			    0,
+			    &hash)
+		    )) {
+		
+		boost::throw_exception (MXFFileError ("error in writing video MXF", _asset->path().string()));
+	}
+
+	_next_eye = _next_eye == EYE_LEFT ? EYE_RIGHT : EYE_LEFT;
+
+	return FrameInfo (before_offset, _state->mxf_writer.Tell() - before_offset, hash);
+}
+
+void
+StereoPictureAssetWriter::fake_write (int size)
+{
+	assert (_started);
+	assert (!_finalized);
+
+	if (ASDCP_FAILURE (_state->mxf_writer.FakeWriteFrame (size))) {
+		boost::throw_exception (MXFFileError ("error in writing video MXF", _asset->path().string()));
+	}
+
+	_next_eye = _next_eye == EYE_LEFT ? EYE_RIGHT : EYE_LEFT;
+	++_frames_written;
+}
+
+void
+StereoPictureAssetWriter::finalize ()
+{
+	assert (!_finalized);
+	
+	if (ASDCP_FAILURE (_state->mxf_writer.Finalize())) {
+		boost::throw_exception (MXFFileError ("error in finalizing video MXF", _asset->path().string()));
+	}
+
+	_finalized = true;
+	_asset->set_intrinsic_duration (_frames_written / 2);
+	_asset->set_duration (_frames_written / 2);
+}