for (list<cxml::NodePtr>::const_iterator i = path_children.begin(); i != path_children.end(); ++i) {
_paths.push_back ((*i)->content ());
}
- _digest = node->optional_string_child ("Digest");
+ _digest = node->optional_string_child ("Digest").get_value_or ("X");
_position = DCPTime (node->number_child<double> ("Position"));
_trim_start = DCPTime (node->number_child<double> ("TrimStart"));
_trim_end = DCPTime (node->number_child<double> ("TrimEnd"));
for (vector<boost::filesystem::path>::const_iterator i = _paths.begin(); i != _paths.end(); ++i) {
node->add_child("Path")->add_child_text (i->string ());
}
- if (_digest) {
- node->add_child("Digest")->add_child_text (_digest.get ());
- }
+ node->add_child("Digest")->add_child_text (_digest);
node->add_child("Position")->add_child_text (raw_convert<string> (_position.get ()));
node->add_child("TrimStart")->add_child_text (raw_convert<string> (_trim_start.get ()));
node->add_child("TrimEnd")->add_child_text (raw_convert<string> (_trim_end.get ()));
}
void
-Content::examine (shared_ptr<Job> job, bool calculate_digest)
+Content::examine (shared_ptr<Job> job)
{
- if (!calculate_digest) {
- return;
- }
-
if (job) {
job->sub (_("Computing digest"));
}
boost::mutex::scoped_lock lm (_mutex);
vector<boost::filesystem::path> p = _paths;
lm.unlock ();
-
- string const d = md5_digest (p, job);
+
+ /* Some content files are very big, so we use a poor's
+ digest here: a MD5 of the first and last 1e6 bytes with the
+ size of the first file tacked on the end as a string.
+ */
+ string const d = md5_digest_head_tail (p, 1000000) + dcp::raw_convert<string> (boost::filesystem::file_size (p.front ()));
lm.lock ();
_digest = d;
string
Content::technical_summary () const
{
- return String::compose ("%1 %2 %3", path_summary(), digest().get_value_or("X"), position().seconds());
+ return String::compose ("%1 %2 %3", path_summary(), digest(), position().seconds());
}
DCPTime
{
SafeStringStream s;
- s << Content::digest().get_value_or("X")
+ s << Content::digest()
<< "_" << position().get()
<< "_" << trim_start().get()
<< "_" << trim_end().get();