Annotation of sys/dev/rasops/rasops.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: rasops.h,v 1.8 2006/11/29 19:08:22 miod Exp $ */
2: /* $NetBSD: rasops.h,v 1.13 2000/06/13 13:36:54 ad Exp $ */
3:
4: /*-
5: * Copyright (c) 1999 The NetBSD Foundation, Inc.
6: * All rights reserved.
7: *
8: * This code is derived from software contributed to The NetBSD Foundation
9: * by Andrew Doran.
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
19: * 3. All advertising materials mentioning features or use of this software
20: * must display the following acknowledgement:
21: * This product includes software developed by the NetBSD
22: * Foundation, Inc. and its contributors.
23: * 4. Neither the name of The NetBSD Foundation nor the names of its
24: * contributors may be used to endorse or promote products derived
25: * from this software without specific prior written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37: * POSSIBILITY OF SUCH DAMAGE.
38: */
39:
40: #ifndef _RASOPS_H_
41: #define _RASOPS_H_ 1
42:
43: #ifdef SMALL_KERNEL
44: #define RASOPS_SMALL
45: #endif
46:
47: #include "rasops_glue.h"
48:
49: struct wsdisplay_font;
50:
51: /* For rasops_info::ri_flg */
52: #define RI_FULLCLEAR 0x0001 /* eraserows() hack to clear full screen */
53: #define RI_FORCEMONO 0x0002 /* monochrome output even if we can do color */
54: #define RI_BSWAP 0x0004 /* framebuffer endianness doesn't match CPU */
55: #define RI_CURSOR 0x0008 /* cursor is switched on */
56: #define RI_CLEAR 0x0010 /* clear display on startup */
57: #define RI_CLEARMARGINS 0x0020 /* clear display margins on startup */
58: #define RI_CENTER 0x0040 /* center onscreen output */
59: #define RI_CURSORCLIP 0x0080 /* cursor is currently clipped */
60: #define RI_ROTATE_CW 0x0100 /* display is rotated, quarter clockwise */
61: #define RI_CFGDONE 0x0200 /* rasops_reconfig() completed successfully */
62:
63: struct rasops_info {
64: /* These must be filled in by the caller */
65: int ri_depth; /* depth in bits */
66: u_char *ri_bits; /* ptr to bits */
67: int ri_width; /* width (pels) */
68: int ri_height; /* height (pels) */
69: int ri_stride; /* stride in bytes */
70:
71: /*
72: * These can optionally be left zeroed out. If you fill ri_font,
73: * but aren't using wsfont, set ri_wsfcookie to -1.
74: */
75: struct wsdisplay_font *ri_font;
76: int ri_wsfcookie; /* wsfont cookie */
77: void *ri_hw; /* driver private data; ignored by rasops */
78: int ri_crow; /* cursor row */
79: int ri_ccol; /* cursor column */
80: int ri_flg; /* various operational flags */
81:
82: /*
83: * These are optional and will default if zero. Meaningless
84: * on depths other than 15, 16, 24 and 32 bits per pel. On
85: * 24 bit displays, ri_{r,g,b}num must be 8.
86: */
87: u_char ri_rnum; /* number of bits for red */
88: u_char ri_gnum; /* number of bits for green */
89: u_char ri_bnum; /* number of bits for blue */
90: u_char ri_rpos; /* which bit red starts at */
91: u_char ri_gpos; /* which bit green starts at */
92: u_char ri_bpos; /* which bit blue starts at */
93:
94: /* These are filled in by rasops_init() */
95: int ri_emuwidth; /* width we actually care about */
96: int ri_emuheight; /* height we actually care about */
97: int ri_emustride; /* bytes per row we actually care about */
98: int ri_rows; /* number of rows (characters, not pels) */
99: int ri_cols; /* number of columns (characters, not pels) */
100: int ri_delta; /* row delta in bytes */
101: int ri_pelbytes; /* bytes per pel (may be zero) */
102: int ri_fontscale; /* fontheight * fontstride */
103: int ri_xscale; /* fontwidth * pelbytes */
104: int ri_yscale; /* fontheight * stride */
105: u_char *ri_origbits; /* where screen bits actually start */
106: int ri_xorigin; /* where ri_bits begins (x) */
107: int ri_yorigin; /* where ri_bits begins (y) */
108: int32_t ri_devcmap[16]; /* color -> framebuffer data */
109:
110: /* The emulops you need to use, and the screen caps for wscons */
111: struct wsdisplay_emulops ri_ops;
112: int ri_caps;
113:
114: /* Callbacks so we can share some code */
115: void (*ri_do_cursor)(struct rasops_info *);
116: void (*ri_updatecursor)(struct rasops_info *);
117:
118: #if NRASOPS_ROTATION > 0
119: /* Used to intercept putchar to permit display rotation */
120: struct wsdisplay_emulops ri_real_ops;
121: #endif
122: };
123:
124: #define DELTA(p, d, cast) ((p) = (cast)((caddr_t)(p) + (d)))
125:
126: /*
127: * rasops_init().
128: *
129: * Integer parameters are the number of rows and columns we'd *like*.
130: *
131: * In terms of optimization, fonts that are a multiple of 8 pixels wide
132: * work the best.
133: *
134: * rasops_init() takes care of rasops_reconfig(). The parameters to both
135: * are the same. If calling rasops_reconfig() to change the font and
136: * ri_wsfcookie >= 0, you must call wsfont_unlock() on it, and reset it
137: * to -1 (or a new, valid cookie).
138: */
139:
140: /*
141: * Per-depth initialization functions. These should not be called outside
142: * the rasops code.
143: */
144: void rasops1_init(struct rasops_info *);
145: void rasops2_init(struct rasops_info *);
146: void rasops4_init(struct rasops_info *);
147: void rasops8_init(struct rasops_info *);
148: void rasops15_init(struct rasops_info *);
149: void rasops24_init(struct rasops_info *);
150: void rasops32_init(struct rasops_info *);
151:
152: /* rasops.c */
153: int rasops_init(struct rasops_info *, int, int);
154: int rasops_reconfig(struct rasops_info *, int, int);
155: void rasops_eraserows(void *, int, int, long);
156: void rasops_erasecols(void *, int, int, int, long);
157:
158: extern const u_char rasops_isgray[16];
159: extern const u_char rasops_cmap[256*3];
160:
161: #endif /* _RASOPS_H_ */
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