al_register_bitmap_loader_f - Allegro 5 API

       Register  a handler for al_load_bitmap_f(3alleg5).  The given function will be used to handle the loading
       of bitmaps files with the given extension.

       The extension should include the leading dot (`.') character.  It will be matched case-insensitively.

       The fs_loader argument may be NULL to unregister an entry.

       Returns true on success, false on error.  Returns false if unregistering an entry that doesn’t exist.

       al_register_bitmap_loader_f - Allegro 5 API

al_register_bitmap_loader(3alleg5)

Allegro reference manual                                                    al_register_bitmap_loader_f(3alleg5)

              #include <allegro5/allegro.h>

              bool al_register_bitmap_loader_f(const char *extension,
                 ALLEGRO_BITMAP *(*fs_loader)(ALLEGRO_FILE *fp, int flags))