xref: /plan9/sys/src/cmd/jpg/bmp.h (revision fbbcd4dc8f19834c76f819eabf0fe7c72f55a5a7)
1 
2 #define BMP_RGB      	0
3 #define BMP_RLE8     	1
4 #define BMP_RLE4     	2
5 #define BMP_BITFIELDS	3
6 
7 typedef struct {
8 	uchar red;
9 	uchar green;
10 	uchar blue;
11 	uchar alpha;
12 } Rgb;
13 
14 #define Filehdrsz	14
15 
16 typedef struct {
17         short	type;
18         long	size;		/* file size, not structure size */
19         short	reserved1;
20         short	reserved2;
21         long	offbits;
22 } Filehdr;
23 
24 typedef struct {
25 	long	size;		/* Size of the Bitmap-file */
26 	long	lReserved;	/* Reserved */
27 	long	dataoff;	/* Picture data location */
28 	long	hsize;		/* Header-Size */
29 	long	width;		/* Picture width (pixels) */
30 	long	height;		/* Picture height (pixels) */
31 	short	planes;		/* Planes (must be 1) */
32 	short	bpp;		/* Bits per pixel (1, 4, 8 or 24) */
33 	long	compression;	/* Compression mode */
34 	long	imagesize;	/* Image size (bytes) */
35 	long	hres;		/* Horizontal Resolution (pels/meter) */
36 	long	vres;		/* Vertical Resolution (pels/meter) */
37 	long	colours;	/* Used Colours (Col-Table index) */
38 	long	impcolours;	/* Important colours (Col-Table index) */
39 } Infohdr;
40