Add test() to cscript.

[libdcp.git] / src / mxf_asset.cc

diff --git a/src/mxf_asset.cc b/src/mxf_asset.cc
index 229c332f5230a42fc7c8e95e07a7e2dd4b880eb9..28ac1933371cf8cfe8b0862230ae48acbade168c 100644 (file)
--- a/src/mxf_asset.cc
+++ b/src/mxf_asset.cc
@@ -22,44 +22,65 @@
  */
 
 #include <iostream>
-#include <fstream>
 #include <boost/filesystem.hpp>
+#include <libxml++/nodes/element.h>
 #include "AS_DCP.h"
+#include "KM_prng.h"
 #include "KM_util.h"
 #include "mxf_asset.h"
 #include "util.h"
 #include "metadata.h"
+#include "exceptions.h"
+#include "kdm.h"
+#include "raw_convert.h"
 
 using std::string;
 using std::list;
+using std::pair;
 using boost::shared_ptr;
 using boost::dynamic_pointer_cast;
 using namespace libdcp;
 
-MXFAsset::MXFAsset (string directory, string file_name)
+MXFAsset::MXFAsset (boost::filesystem::path directory, boost::filesystem::path file_name)
        : Asset (directory, file_name)
        , _progress (0)
+       , _encryption_context (0)
+       , _decryption_context (0)
+       , _interop (false)
 {
 
 }
 
-MXFAsset::MXFAsset (string directory, string file_name, boost::signals2::signal<void (float)>* progress, int edit_rate, int intrinsic_duration)
-       : Asset (directory, file_name, edit_rate, intrinsic_duration)
-       , _progress (progress)
+MXFAsset::~MXFAsset ()
 {
-       
+       delete _encryption_context;
+       delete _decryption_context;
 }
+
 void
-MXFAsset::fill_writer_info (ASDCP::WriterInfo* writer_info, string uuid)
+MXFAsset::fill_writer_info (ASDCP::WriterInfo* writer_info)
 {
-       writer_info->ProductVersion = Metadata::instance()->product_version;
-       writer_info->CompanyName = Metadata::instance()->company_name;
-       writer_info->ProductName = Metadata::instance()->product_name.c_str();
+       writer_info->ProductVersion = _metadata.product_version;
+       writer_info->CompanyName = _metadata.company_name;
+       writer_info->ProductName = _metadata.product_name.c_str();
 
-       writer_info->LabelSetType = ASDCP::LS_MXF_SMPTE;
+       if (_interop) {
+               writer_info->LabelSetType = ASDCP::LS_MXF_INTEROP;
+       } else {
+               writer_info->LabelSetType = ASDCP::LS_MXF_SMPTE;
+       }
        unsigned int c;
-       Kumu::hex2bin (uuid.c_str(), writer_info->AssetUUID, Kumu::UUID_Length, &c);
+       Kumu::hex2bin (_uuid.c_str(), writer_info->AssetUUID, Kumu::UUID_Length, &c);
        assert (c == Kumu::UUID_Length);
+
+       if (_key) {
+               Kumu::GenRandomUUID (writer_info->ContextID);
+               writer_info->EncryptedEssence = true;
+
+               unsigned int c;
+               Kumu::hex2bin (_key_id.c_str(), writer_info->CryptographicKeyID, Kumu::UUID_Length, &c);
+               assert (c == Kumu::UUID_Length);
+       }
 }
 
 bool
@@ -84,3 +105,51 @@ MXFAsset::equals (shared_ptr<const Asset> other, EqualityOptions opt, boost::fun
        
        return true;
 }
+
+void
+MXFAsset::write_to_cpl (xmlpp::Element* node) const
+{
+       pair<string, string> const attr = cpl_node_attribute ();
+       xmlpp::Element* a = node->add_child (cpl_node_name ());
+       if (!attr.first.empty ()) {
+               a->set_attribute (attr.first, attr.second);
+       }
+       a->add_child ("Id")->add_child_text ("urn:uuid:" + _uuid);
+       a->add_child ("AnnotationText")->add_child_text (_file_name.string ());
+       a->add_child ("EditRate")->add_child_text (raw_convert<string> (_edit_rate) + " 1");
+       a->add_child ("IntrinsicDuration")->add_child_text (raw_convert<string> (_intrinsic_duration));
+       a->add_child ("EntryPoint")->add_child_text (raw_convert<string> (_entry_point));
+       a->add_child ("Duration")->add_child_text (raw_convert<string> (_duration));
+       if (!_key_id.empty ()) {
+               a->add_child("KeyId")->add_child_text ("urn:uuid:" + _key_id);
+       }
+       a->add_child ("Hash")->add_child_text (digest ());
+}
+
+void
+MXFAsset::set_key (Key key)
+{
+       _key = key;
+
+       if (_key_id.empty ()) {
+               /* No key ID so far; we now need one */
+               _key_id = make_uuid ();
+       }
+       
+       _decryption_context = new ASDCP::AESDecContext;
+       if (ASDCP_FAILURE (_decryption_context->InitKey (_key->value ()))) {
+               throw MiscError ("could not set up decryption context");
+       }
+
+       _encryption_context = new ASDCP::AESEncContext;
+       if (ASDCP_FAILURE (_encryption_context->InitKey (_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");
+       }
+}