#include <iostream>
#include <fstream>
#include <boost/filesystem.hpp>
+#include <boost/lexical_cast.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"
-
-using namespace std;
-using namespace boost;
+#include "exceptions.h"
+#include "kdm.h"
+
+using std::string;
+using std::list;
+using std::pair;
+using boost::shared_ptr;
+using boost::lexical_cast;
+using boost::dynamic_pointer_cast;
using namespace libdcp;
-MXFAsset::MXFAsset (string directory, string file_name, sigc::signal1<void, float>* progress, int fps, int entry_point, int length)
+MXFAsset::MXFAsset (string directory, string file_name)
: Asset (directory, file_name)
+ , _progress (0)
+ , _encrypted (false)
+ , _encryption_context (0)
+ , _decryption_context (0)
+{
+
+}
+
+MXFAsset::MXFAsset (string directory, string file_name, boost::signals2::signal<void (float)>* progress, int edit_rate, int intrinsic_duration, bool encrypted)
+ : Asset (directory, file_name, edit_rate, intrinsic_duration)
, _progress (progress)
- , _fps (fps)
- , _entry_point (entry_point)
- , _length (length)
+ , _encrypted (encrypted)
+ , _encryption_context (0)
+ , _decryption_context (0)
{
-
+ if (_encrypted) {
+ /* Generate an encryption key and a UUID for it */
+ _key_id = make_uuid ();
+ uint8_t key_buffer[ASDCP::KeyLen];
+ Kumu::FortunaRNG rng;
+ rng.FillRandom (key_buffer, ASDCP::KeyLen);
+ char key_string[ASDCP::KeyLen * 4];
+ Kumu::bin2hex (key_buffer, ASDCP::KeyLen, key_string, ASDCP::KeyLen * 4);
+ _key_value = key_string;
+
+ _encryption_context = new ASDCP::AESEncContext;
+ if (ASDCP_FAILURE (_encryption_context->InitKey (key_buffer))) {
+ throw MiscError ("could not set up encryption context");
+ }
+
+ uint8_t cbc_buffer[ASDCP::CBC_BLOCK_SIZE];
+
+ if (ASDCP_FAILURE (_encryption_context->SetIVec (rng.FillRandom (cbc_buffer, ASDCP::CBC_BLOCK_SIZE)))) {
+ throw MiscError ("could not set up CBC initialization vector");
+ }
+ }
}
-void
-MXFAsset::fill_writer_info (ASDCP::WriterInfo* writer_info) const
+MXFAsset::~MXFAsset ()
{
- writer_info->ProductVersion = Metadata::instance()->product_version;
- writer_info->CompanyName = Metadata::instance()->company_name;
- writer_info->ProductName = Metadata::instance()->product_name.c_str();
+ delete _encryption_context;
+}
- writer_info->LabelSetType = ASDCP::LS_MXF_SMPTE;
+void
+MXFAsset::fill_writer_info (ASDCP::WriterInfo* writer_info, string uuid, bool interop, MXFMetadata const & metadata)
+{
+ writer_info->ProductVersion = metadata.product_version;
+ writer_info->CompanyName = metadata.company_name;
+ writer_info->ProductName = metadata.product_name.c_str();
+
+ 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 (_encrypted) {
+ 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
-MXFAsset::equals (shared_ptr<const Asset> other, EqualityOptions opt, list<string>& notes) const
+MXFAsset::equals (shared_ptr<const Asset> other, EqualityOptions opt, boost::function<void (NoteType, string)> note) const
{
- shared_ptr<const MXFAsset> other_mxf = dynamic_pointer_cast<const MXFAsset> (other);
- if (!other_mxf) {
- notes.push_back ("comparing an MXF asset with a non-MXF asset");
- return false;
- }
-
- if (_file_name != other_mxf->_file_name) {
- notes.push_back ("MXF names differ");
- return false;
- }
-
- if (_fps != other_mxf->_fps) {
- notes.push_back ("MXF frames per second differ");
+ if (!Asset::equals (other, opt, note)) {
return false;
}
- if (_length != other_mxf->_length) {
- notes.push_back ("MXF lengths differ");
+ shared_ptr<const MXFAsset> other_mxf = dynamic_pointer_cast<const MXFAsset> (other);
+ if (!other_mxf) {
+ note (ERROR, "comparing an MXF asset with a non-MXF asset");
return false;
}
- if (opt.bitwise) {
-
- if (digest() != other_mxf->digest()) {
- notes.push_back ("MXF digests differ");
- return false;
- }
-
- if (filesystem::file_size (path()) != filesystem::file_size (other_mxf->path())) {
- notes.push_back (path().string() + " and " + other_mxf->path().string() + " sizes differ");
+ if (_file_name != other_mxf->_file_name) {
+ note (ERROR, "MXF names differ");
+ if (!opt.mxf_names_can_differ) {
return false;
}
-
- ifstream a (path().string().c_str(), ios::binary);
- ifstream b (other_mxf->path().string().c_str(), ios::binary);
-
- int buffer_size = 65536;
- char abuffer[buffer_size];
- char bbuffer[buffer_size];
-
- int n = filesystem::file_size (path ());
-
- while (n) {
- int const t = min (n, buffer_size);
- a.read (abuffer, t);
- b.read (bbuffer, t);
+ }
+
+ return true;
+}
- if (memcmp (abuffer, bbuffer, t) != 0) {
- notes.push_back (path().string() + " and " + other_mxf->path().string() + " content differs");
- return false;
- }
+void
+MXFAsset::add_typed_key_id (xmlpp::Element* parent) const
+{
+ xmlpp::Element* typed_key_id = parent->add_child("TypedKeyId");
+ typed_key_id->add_child("KeyType")->add_child_text(key_type ());
+ typed_key_id->add_child("KeyId")->add_child_text("urn:uuid:" + _key_id);
+}
- n -= t;
- }
+void
+MXFAsset::write_to_cpl (xmlpp::Element* node, bool interop) const
+{
+ pair<string, string> const attr = cpl_node_attribute (interop);
+ 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);
+ a->add_child ("EditRate")->add_child_text (lexical_cast<string> (_edit_rate) + " 1");
+ a->add_child ("IntrinsicDuration")->add_child_text (lexical_cast<string> (_intrinsic_duration));
+ a->add_child ("EntryPoint")->add_child_text (lexical_cast<string> (_entry_point));
+ a->add_child ("Duration")->add_child_text (lexical_cast<string> (_duration));
+ if (_encrypted) {
+ a->add_child("KeyId")->add_child_text ("urn:uuid:" + _key_id);
}
-
- return true;
}
-int
-MXFAsset::length () const
+void
+MXFAsset::set_kdm_cipher (KDMCipher cipher)
{
- return _length;
+ _decryption_context = new ASDCP::AESDecContext;
+ if (ASDCP_FAILURE (_decryption_context->InitKey (cipher.key_raw ()))) {
+ throw MiscError ("could not set up decryption context");
+ }
}
projects / libdcp.git / blobdiff