#include <string>
#include <stdint.h>
#include <boost/shared_ptr.hpp>
+#include <boost/function.hpp>
#include <openjpeg.h>
#include "types.h"
extern bool operator!= (Size const & a, Size const & b);
extern std::string make_uuid ();
-extern std::string make_digest (std::string filename);
+extern std::string make_digest (std::string filename, boost::function<void (float)> *);
extern std::string content_kind_to_string (ContentKind kind);
extern ContentKind content_kind_from_string (std::string kind);
extern bool empty_or_white_space (std::string s);