FreeBSD Manual Pages
create_datafile_index(3) Allegro manual create_datafile_index(3) NAME create_datafile_index - Creates an index for a datafile. Allegro game pro- gramming library. SYNOPSIS #include <allegro.h> DATAFILE_INDEX *create_datafile_index(const char *filename); DESCRIPTION Creates an index for a datafile, to speed up loading single objects out of it. This is mostly useful for big datafiles, which you don't want to load as a whole. The index will store the offset of all objects inside the datafile, and then you can load it quickly with "load_datafile_object_in- dexed" later. Use destroy_datafile_index to free the memory used by it again. Note: If the datafile uses global compression, there is no performance gain from using an index, because seeking to the offset still requires to uncom- press the whole datafile up to that offset. Example: DATAFILE_INDEX *index = create_datafile_index("huge.dat"); DATAFILE *object = load_datafile_object_indexed(index, 1234); ... unload_datafile_object(object); destroy_datafile_index(index); RETURN VALUE A pointer value which you can pass to load_datafile_object_indexed. SEE ALSO destroy_datafile_index(3), load_datafile_object_indexed(3) Allegro version 4.4.3 create_datafile_index(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO
Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=create_datafile_index&sektion=3&manpath=FreeBSD+Ports+15.1.quarterly>