/*
- Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
This file is part of libdcp.
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/asset_writer.h
- * @brief AssetWriter class.
+ * @brief AssetWriter class
*/
+
#include "asset_writer.h"
-#include "mxf.h"
+#include "crypto_context.h"
#include "dcp_assert.h"
-#include "AS_DCP.h"
-#include "KM_prng.h"
+#include "mxf.h"
+#include <asdcp/AS_DCP.h>
+#include <asdcp/KM_prng.h>
+
using namespace dcp;
+
/** Create an AssetWriter.
* @param mxf MXF that we are writing.
* @param file File to write to.
*/
-AssetWriter::AssetWriter (MXF* mxf, boost::filesystem::path file, Standard standard)
+AssetWriter::AssetWriter (MXF* mxf, boost::filesystem::path file)
: _mxf (mxf)
, _file (file)
- , _frames_written (0)
- , _finalized (false)
- , _started (false)
- , _encryption_context (0)
- , _hmac_context (0)
+ , _crypto_context(new EncryptionContext (mxf->key(), mxf->standard()))
{
- if (mxf->key ()) {
- _encryption_context = new ASDCP::AESEncContext;
- if (ASDCP_FAILURE (_encryption_context->InitKey (mxf->key()->value ()))) {
- throw MiscError ("could not set up encryption context");
- }
-
- uint8_t cbc_buffer[ASDCP::CBC_BLOCK_SIZE];
-
- Kumu::FortunaRNG rng;
- if (ASDCP_FAILURE (_encryption_context->SetIVec (rng.FillRandom (cbc_buffer, ASDCP::CBC_BLOCK_SIZE)))) {
- throw MiscError ("could not set up CBC initialization vector");
- }
-
- _hmac_context = new ASDCP::HMACContext;
-
- ASDCP::LabelSet_t type;
- if (standard == INTEROP) {
- type = ASDCP::LS_MXF_INTEROP;
- } else {
- type = ASDCP::LS_MXF_SMPTE;
- }
-
- if (ASDCP_FAILURE (_hmac_context->InitKey (mxf->key()->value(), type))) {
- throw MiscError ("could not set up HMAC context");
- }
- }
-}
-AssetWriter::~AssetWriter ()
-{
- delete _encryption_context;
- delete _hmac_context;
}
-/** @return true if anything was written by this writer */
+
bool
AssetWriter::finalize ()
{