al_identify_bitmap_f - Allegro 5 API
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#include <allegro5/allegro.h>
char const *al_identify_bitmap_f(ALLEGRO_FILE *fp)
Tries to guess the bitmap file type of the open ALLEGRO_FILE by reading the
first few bytes. By default Allegro cannot recognize any file types, but
calling al_init_image_addon(3) will add detection of (some of) the types it
can read. You can also use al_register_bitmap_identifier(3) to add
identification for custom file types.
Returns a pointer to a static string with a file extension for the
type, including the leading dot. For example “.png” or
“.jpg”. Returns NULL if the bitmap type cannot be
determined.
al_init_image_addon(3), al_identify_bitmap(3), al_register_bitmap_identifier(3)