SWF Matrix (swf_matrix)

struct swf_matrix {
	char align;
	unsigned		f_has_scale : 1;
	if(f_has_scale) {
		unsigned	f_scale_bits : 5;
		signed fixed	f_scale_x : f_scale_bits;
		signed fixed	f_scale_y : f_scale_bits;
	}
	unsigned		f_has_rotate : 1;
	if(f_has_rotate) {
		unsigned	f_rotate_bits : 5;
		signed fixed	f_rotate_skew0 : f_rotate_bits;
		signed fixed	f_rotate_skew1 : f_rotate_bits;
	}
	unsigned		f_translate_bits : 5;
	signed			f_translate_x : f_rotate_bits;
	signed			f_translate_y : f_rotate_bits;
};