php man page for bitmap_color_depth

bitmap_color_depth(3alleg4)					  Allegro manual				       bitmap_color_depth(3alleg4)

NAME
       bitmap_color_depth - Returns the color depth of the specified bitmap. Allegro game programming library.

SYNOPSIS
       #include <allegro.h>

       int bitmap_color_depth(BITMAP *bmp);

DESCRIPTION
       Returns the color depth of the specified bitmap (8, 15, 16, 24, or 32).	Example:

	  switch (bitmap_color_depth(screen)) {
	     case 8:
		/* Access screen using optimized 8-bit code. */
		break;
	     default:
		/* Use generic slow functions. */
		break;
	  }

SEE ALSO
       set_color_depth(3alleg4),    bitmap_mask_color(3alleg4),    ex3d(3alleg4),    exlights(3alleg4),    exscn3d(3alleg4),	exswitch(3alleg4),
       extrans(3alleg4), exupdate(3alleg4), exzbuf(3alleg4)

Allegro 							   version 4.4.2				       bitmap_color_depth(3alleg4)