virtual int check_header() { return 0; } // Test file to see if it is of this type.
virtual int reset_parameters_derived() { return 0; }
virtual int read_header() { return 1; } // WAV files for getting header
+ virtual int get_best_colormodel(int driver, int vstream);
+
virtual int open_file(int rd, int wr) { return 1; }
virtual int close_file();
virtual int close_file_derived() { return 0; }