extern boost::filesystem::path shared_path ();
extern FILE * fopen_boost (boost::filesystem::path, std::string);
extern int dcpomatic_fseek (FILE *, int64_t, int);
extern void start_batch_converter (boost::filesystem::path dcpomatic);
extern boost::filesystem::path shared_path ();
extern FILE * fopen_boost (boost::filesystem::path, std::string);
extern int dcpomatic_fseek (FILE *, int64_t, int);
extern void start_batch_converter (boost::filesystem::path dcpomatic);
-extern int thread_id ();
+extern void start_player (boost::filesystem::path dcpomatic);
+extern uint64_t thread_id ();
+extern int avio_open_boost (AVIOContext** s, boost::filesystem::path file, int flags);