rasops.h revision 1.3 1 1.3 ad /* $NetBSD: rasops.h,v 1.3 1999/04/13 03:02:40 ad Exp $ */
2 1.1 ad
3 1.2 ad /*
4 1.2 ad * Copyright (c) 1999 Andy Doran <ad (at) NetBSD.org>
5 1.1 ad * All rights reserved.
6 1.1 ad *
7 1.1 ad * Redistribution and use in source and binary forms, with or without
8 1.1 ad * modification, are permitted provided that the following conditions
9 1.1 ad * are met:
10 1.1 ad * 1. Redistributions of source code must retain the above copyright
11 1.1 ad * notice, this list of conditions and the following disclaimer.
12 1.1 ad * 2. Redistributions in binary form must reproduce the above copyright
13 1.1 ad * notice, this list of conditions and the following disclaimer in the
14 1.1 ad * documentation and/or other materials provided with the distribution.
15 1.1 ad *
16 1.2 ad * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 1.2 ad * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 1.2 ad * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 1.2 ad * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 1.2 ad * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 1.2 ad * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 1.2 ad * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 1.2 ad * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 1.2 ad * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 1.2 ad * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 1.2 ad * SUCH DAMAGE.
27 1.2 ad *
28 1.1 ad */
29 1.2 ad
30 1.1 ad #ifndef _RASOPS_H_
31 1.1 ad #define _RASOPS_H_ 1
32 1.1 ad
33 1.1 ad /* Avoid dragging in dev/wscons/wsconsio.h */
34 1.1 ad struct wsdisplay_font;
35 1.1 ad
36 1.1 ad struct rasops_info {
37 1.1 ad /* These must be filled in by the caller */
38 1.1 ad int ri_depth; /* depth in bits */
39 1.1 ad u_char *ri_bits; /* ptr to bits */
40 1.1 ad int ri_width; /* width (pels) */
41 1.1 ad int ri_height; /* height (pels) */
42 1.1 ad int ri_stride; /* stride in bytes */
43 1.1 ad
44 1.3 ad /* These can optionally be left empty */
45 1.3 ad struct wsdisplay_font *ri_font;
46 1.3 ad void *ri_priv; /* driver private data */
47 1.3 ad u_char ri_forcemono; /* force monochrome operation */
48 1.3 ad u_char ri_swab; /* swap bytes for 15/16/32 bit depths? */
49 1.1 ad
50 1.1 ad /*
51 1.1 ad * These are optional and will default if zero. Meaningless
52 1.1 ad * on depths other than 15, 16, 24 and 32 bits per pel. On
53 1.1 ad * 24 bit displays, ri_{r,g,b}num must be 8.
54 1.1 ad */
55 1.1 ad u_char ri_rnum; /* number of bits for red */
56 1.1 ad u_char ri_gnum; /* number of bits for green */
57 1.1 ad u_char ri_bnum; /* number of bits for blue */
58 1.1 ad u_char ri_rpos; /* which bit red starts at */
59 1.1 ad u_char ri_gpos; /* which bit green starts at */
60 1.1 ad u_char ri_bpos; /* which bit blue starts at */
61 1.1 ad
62 1.1 ad /* These are filled in by rasops_init() */
63 1.1 ad int ri_emuwidth; /* width we actually care about */
64 1.1 ad int ri_emuheight; /* height we actually care about */
65 1.1 ad int ri_emustride; /* bytes per row we actually care about */
66 1.1 ad int ri_rows; /* number of rows (characters, not pels) */
67 1.1 ad int ri_cols; /* number of columns (characters, not pels) */
68 1.1 ad int ri_delta; /* row delta in bytes */
69 1.1 ad int ri_flg; /* flags */
70 1.1 ad int ri_crow; /* cursor row */
71 1.1 ad int ri_ccol; /* cursor column */
72 1.1 ad int ri_pelbytes; /* bytes per pel */
73 1.1 ad int ri_fontscale; /* fontheight * fontstride */
74 1.1 ad int ri_xscale; /* fontwidth * pelbytes */
75 1.1 ad int ri_yscale; /* fontheight * stride */
76 1.1 ad u_char *ri_origbits; /* where screen bits actually start */
77 1.1 ad
78 1.1 ad /* For 15, 16, 24, 32 bits */
79 1.1 ad int32_t ri_devcmap[16]; /* device colormap (WSCOL_*) */
80 1.1 ad
81 1.1 ad /* The emulops you need to use */
82 1.1 ad struct wsdisplay_emulops ri_ops;
83 1.1 ad
84 1.1 ad /* Callbacks so we can share some code */
85 1.1 ad void (*ri_do_cursor)(struct rasops_info *);
86 1.1 ad };
87 1.1 ad
88 1.1 ad #define RASOPS_CURSOR (0x01) /* cursor is on */
89 1.1 ad #define RASOPS_INITTED (0x02) /* struct is initialized */
90 1.1 ad #define RASOPS_CURSOR_CLIPPED (0x04) /* cursor is clipped */
91 1.1 ad
92 1.1 ad #define DELTA(p, d, cast) ((p) = (cast)((caddr_t)(p) + (d)))
93 1.1 ad
94 1.1 ad /*
95 1.1 ad * rasops_init().
96 1.1 ad *
97 1.1 ad * Integer parameters are: number of rows we'd like, number of columns we'd
98 1.1 ad * like, whether we should clear the display and whether we should center
99 1.1 ad * the output. Remember that what you'd like is always not what you get.
100 1.1 ad *
101 1.1 ad * In terms of optimization, fonts that are a multiple of 8 pixels wide
102 1.1 ad * work the best: this is important, and will cost you if you don't use 'em.
103 1.1 ad */
104 1.1 ad
105 1.1 ad /* rasops.c */
106 1.1 ad int rasops_init __P((struct rasops_info *, int, int, int, int));
107 1.1 ad void rasops_unpack_attr __P((long, int *, int *, int *));
108 1.1 ad
109 1.1 ad /* This should not be called outside rasops */
110 1.1 ad void rasops_init_devcmap __P((struct rasops_info *));
111 1.1 ad
112 1.1 ad extern u_char rasops_isgray[16];
113 1.1 ad extern u_char rasops_cmap[256*3];
114 1.1 ad
115 1.1 ad #endif /* _RASOPS_H_ */
116