rasops.h revision 1.6
1 /* $NetBSD: rasops.h,v 1.6 1999/05/18 21:51:59 ad Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Andy Doran. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #ifndef _RASOPS_H_ 40 #define _RASOPS_H_ 1 41 42 /* Avoid dragging in dev/wscons/wsconsio.h */ 43 struct wsdisplay_font; 44 45 struct rasops_info { 46 /* These must be filled in by the caller */ 47 int ri_depth; /* depth in bits */ 48 u_char *ri_bits; /* ptr to bits */ 49 int ri_width; /* width (pels) */ 50 int ri_height; /* height (pels) */ 51 int ri_stride; /* stride in bytes */ 52 53 /* 54 * These can optionally be left empty. If you fill ri_font, 55 * but aren't using wsfont, set ri_wsfcookie to -1. 56 */ 57 struct wsdisplay_font *ri_font; 58 int ri_wsfcookie; 59 void *ri_priv; /* driver private data */ 60 u_char ri_forcemono; /* force monochrome operation */ 61 u_char ri_swab; /* swap bytes for 15/16/32 bit depths? */ 62 63 /* 64 * These are optional and will default if zero. Meaningless 65 * on depths other than 15, 16, 24 and 32 bits per pel. On 66 * 24 bit displays, ri_{r,g,b}num must be 8. 67 */ 68 u_char ri_rnum; /* number of bits for red */ 69 u_char ri_gnum; /* number of bits for green */ 70 u_char ri_bnum; /* number of bits for blue */ 71 u_char ri_rpos; /* which bit red starts at */ 72 u_char ri_gpos; /* which bit green starts at */ 73 u_char ri_bpos; /* which bit blue starts at */ 74 75 /* These are filled in by rasops_init() */ 76 int ri_emuwidth; /* width we actually care about */ 77 int ri_emuheight; /* height we actually care about */ 78 int ri_emustride; /* bytes per row we actually care about */ 79 int ri_rows; /* number of rows (characters, not pels) */ 80 int ri_cols; /* number of columns (characters, not pels) */ 81 int ri_delta; /* row delta in bytes */ 82 int ri_flg; /* flags */ 83 int ri_crow; /* cursor row */ 84 int ri_ccol; /* cursor column */ 85 int ri_pelbytes; /* bytes per pel (may be zero) */ 86 int ri_fontscale; /* fontheight * fontstride */ 87 int ri_xscale; /* fontwidth * pelbytes */ 88 int ri_yscale; /* fontheight * stride */ 89 u_char *ri_origbits; /* where screen bits actually start */ 90 int ri_xorigin; /* where ri_bits begins (x) */ 91 int ri_yorigin; /* where ri_bits begins (y) */ 92 93 /* For 15, 16, 24, 32 bits */ 94 int32_t ri_devcmap[16]; /* device colormap (WSCOL_*) */ 95 96 /* The emulops you need to use, and the screen caps for wscons */ 97 struct wsdisplay_emulops ri_ops; 98 int ri_caps; 99 100 /* Callbacks so we can share some code */ 101 void (*ri_do_cursor) __P((struct rasops_info *)); 102 }; 103 104 #define RASOPS_CURSOR (0x01) /* cursor is on */ 105 #define RASOPS_INITTED (0x02) /* struct is initialized */ 106 #define RASOPS_CURSOR_CLIPPED (0x04) /* cursor is clipped */ 107 108 #define DELTA(p, d, cast) ((p) = (cast)((caddr_t)(p) + (d))) 109 110 /* 111 * rasops_init(). 112 * 113 * Integer parameters are: number of rows we'd like, number of columns we'd 114 * like, whether we should clear the display and whether we should center 115 * the output. Remember that what you'd like is always not what you get. 116 * 117 * In terms of optimization, fonts that are a multiple of 8 pixels wide 118 * work the best: this is important, and will cost you if you don't use 'em. 119 * 120 * rasops_init() takes care of rasops_setfont(). You only need to use this 121 * when you want to switch fonts later on. The integer parameters to both 122 * are the same. Before calling rasops_setfont(), set ri.ri_font. This 123 * should happen at _splhigh_. If (ri_wsfcookie >= 0), you must call 124 * wsfont_unlock() on it first. 125 */ 126 127 /* rasops.c */ 128 int rasops_init __P((struct rasops_info *, int, int, int, int)); 129 int rasops_setfont __P((struct rasops_info *, int, int, int, int)); 130 void rasops_unpack_attr __P((long, int *, int *, int *)); 131 132 /* These should _not_ be called outside rasops */ 133 void rasops_eraserows __P((void *, int, int, long)); 134 void rasops_erasecols __P((void *, int, int, int, long)); 135 void rasops_copycols __P((void *, int, int, int, int)); 136 137 extern u_char rasops_isgray[16]; 138 extern u_char rasops_cmap[256*3]; 139 140 #endif /* _RASOPS_H_ */ 141
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