• file
• revisions
• annotate
• diff
• raw

bitblt.h@bfc6aaa089b0 (annotated)

bitblt.h

Mon, 26 Aug 2002 05:43:49 +0000

author

eric

date

Mon, 26 Aug 2002 05:43:49 +0000

changeset 47

bfc6aaa089b0

parent 43

b80cb5a4282a

child 48

3d0be1c1c1b2

permissions

-rw-r--r--

fixed 'middle-endian' output from TIFFReadScanline

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@47	23
eric@43	24	typedef u32 word_type;
eric@47	25	#define BITS_PER_WORD (8 * sizeof (word_type))
eric@47	26	#define ALL_ONES (~ 0U)
eric@47	27
eric@43	28
eric@2	29	typedef struct Bitmap
eric@2	30	{
eric@43	31	word_type *bits;
eric@42	32	Rect rect;
eric@43	33	u32 row_words;
eric@2	34	} Bitmap;
eric@2	35
eric@2	36
eric@2	37	#define TF_SRC 0xc
eric@2	38	#define TF_AND 0x8
eric@2	39	#define TF_OR 0xe
eric@2	40	#define TF_XOR 0x6
eric@2	41
eric@2	42
eric@42	43	Bitmap *create_bitmap (Rect *rect);
eric@42	44	void free_bitmap (Bitmap *bitmap);
eric@3	45
eric@2	46	boolean get_pixel (Bitmap *bitmap, Point coord);
eric@2	47	void set_pixel (Bitmap *bitmap, Point coord, boolean value);
eric@2	48
eric@42	49
eric@2	50	Bitmap *bitblt (Bitmap *src_bitmap,
eric@42	51	Rect *src_rect,
eric@2	52	Bitmap *dest_bitmap,
eric@42	53	Point *dest_min,
eric@43	54	int tfn,
eric@43	55	int background);
eric@42	56
eric@42	57
eric@42	58	/* in-place transformations */
eric@42	59	void flip_h (Bitmap *src);
eric@42	60	void flip_v (Bitmap *src);
eric@42	61
eric@42	62	void rot_180 (Bitmap *src); /* combination of flip_h and flip_v */
eric@42	63
eric@42	64	/* "in-place" transformations - will allocate new memory and free old */
eric@42	65	void transpose (Bitmap *src);
eric@42	66
eric@42	67	void rot_90 (Bitmap *src); /* transpose + flip_h */
eric@42	68	void rot_270 (Bitmap *src); /* transpose + flip_v */
eric@47	69
eric@47	70
eric@47	71	void reverse_bits (u8 *p, int byte_count);