• file
• revisions
• annotate
• diff
• raw

bitblt.h@9c85a4cd88a3 (annotated)

bitblt.h

Wed, 02 Jan 2002 16:39:39 +0000

author

eric

date

Wed, 02 Jan 2002 16:39:39 +0000

changeset 42

9c85a4cd88a3

parent 35

41804cc569ab

child 43

b80cb5a4282a

permissions

-rw-r--r--

started work on bitblt optimization - split rotate functions from bitblt.

eric@2	1	typedef struct Point
eric@2	2	{
eric@35	3	s32 x;
eric@35	4	s32 y;
eric@2	5	} Point;
eric@2	6
eric@2	7	typedef struct Rect
eric@2	8	{
eric@42	9	Point min;
eric@42	10	Point max;
eric@2	11	} Rect;
eric@2	12
eric@42	13	static inline s32 rect_width (Rect *r)
eric@42	14	{
eric@42	15	return (r->max.x - r->min.x);
eric@42	16	}
eric@42	17
eric@42	18	static inline s32 rect_height (Rect *r)
eric@42	19	{
eric@42	20	return (r->max.y - r->min.y);
eric@42	21	}
eric@42	22
eric@2	23	typedef struct Bitmap
eric@2	24	{
eric@2	25	u8 *bits;
eric@42	26	Rect rect;
eric@2	27	u32 rowbytes;
eric@2	28	} Bitmap;
eric@2	29
eric@2	30
eric@2	31	#define TF_SRC 0xc
eric@2	32	#define TF_AND 0x8
eric@2	33	#define TF_OR 0xe
eric@2	34	#define TF_XOR 0x6
eric@2	35
eric@2	36
eric@42	37	Bitmap *create_bitmap (Rect *rect);
eric@42	38	void free_bitmap (Bitmap *bitmap);
eric@3	39
eric@2	40	boolean get_pixel (Bitmap *bitmap, Point coord);
eric@2	41	void set_pixel (Bitmap *bitmap, Point coord, boolean value);
eric@2	42
eric@42	43
eric@2	44	Bitmap *bitblt (Bitmap *src_bitmap,
eric@42	45	Rect *src_rect,
eric@2	46	Bitmap *dest_bitmap,
eric@42	47	Point *dest_min,
eric@2	48	int tfn);
eric@42	49
eric@42	50
eric@42	51	/* in-place transformations */
eric@42	52	void flip_h (Bitmap *src);
eric@42	53	void flip_v (Bitmap *src);
eric@42	54
eric@42	55	void rot_180 (Bitmap *src); /* combination of flip_h and flip_v */
eric@42	56
eric@42	57	/* "in-place" transformations - will allocate new memory and free old */
eric@42	58	void transpose (Bitmap *src);
eric@42	59
eric@42	60	void rot_90 (Bitmap *src); /* transpose + flip_h */
eric@42	61	void rot_270 (Bitmap *src); /* transpose + flip_v */