Bv2.1 7.2.3: Check that subtitle <StartTime> exists and is 0.

[libdcp.git] / src / asset_writer.cc

diff --git a/src/asset_writer.cc b/src/asset_writer.cc
index 4611b38a4c10cccf7dc11e65097c3e5c1007747a..c4302f4a7b9ffaef8a36e2262e200d2ead183171 100644 (file)
--- a/src/asset_writer.cc
+++ b/src/asset_writer.cc
@@ -1,20 +1,34 @@
 /*
     Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
 
-    This program is free software; you can redistribute it and/or modify
+    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.
 
-    This program is distributed in the hope that it will be useful,
+    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 this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+    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
@@ -24,8 +38,9 @@
 #include "asset_writer.h"
 #include "mxf.h"
 #include "dcp_assert.h"
-#include "AS_DCP.h"
-#include "KM_prng.h"
+#include "crypto_context.h"
+#include <asdcp/AS_DCP.h>
+#include <asdcp/KM_prng.h>
 
 using namespace dcp;
 
@@ -38,31 +53,17 @@ AssetWriter::AssetWriter (MXF* mxf, boost::filesystem::path file)
        , _file (file)
        , _frames_written (0)
        , _finalized (false)
-       , _encryption_context (0)
+       , _started (false)
+       , _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");
-               }
-       }
-}
-
-AssetWriter::~AssetWriter ()
-{
-       delete _encryption_context;
 }
 
-void
+/** @return true if anything was written by this writer */
+bool
 AssetWriter::finalize ()
 {
        DCP_ASSERT (!_finalized);
        _finalized = true;
+       return _started;
 }