1 /* $OpenBSD: rasops.h,v 1.9 2008/06/26 05:42:17 ray 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 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #ifndef _RASOPS_H_ 34 #define _RASOPS_H_ 1 35 36 #ifdef SMALL_KERNEL 37 #define RASOPS_SMALL 38 #endif 39 40 #include "rasops_glue.h" 41 42 struct wsdisplay_font; 43 44 /* For rasops_info::ri_flg */ 45 #define RI_FULLCLEAR 0x0001 /* eraserows() hack to clear full screen */ 46 #define RI_FORCEMONO 0x0002 /* monochrome output even if we can do color */ 47 #define RI_BSWAP 0x0004 /* framebuffer endianness doesn't match CPU */ 48 #define RI_CURSOR 0x0008 /* cursor is switched on */ 49 #define RI_CLEAR 0x0010 /* clear display on startup */ 50 #define RI_CLEARMARGINS 0x0020 /* clear display margins on startup */ 51 #define RI_CENTER 0x0040 /* center onscreen output */ 52 #define RI_CURSORCLIP 0x0080 /* cursor is currently clipped */ 53 #define RI_ROTATE_CW 0x0100 /* display is rotated, quarter clockwise */ 54 #define RI_CFGDONE 0x0200 /* rasops_reconfig() completed successfully */ 55 56 struct rasops_info { 57 /* These must be filled in by the caller */ 58 int ri_depth; /* depth in bits */ 59 u_char *ri_bits; /* ptr to bits */ 60 int ri_width; /* width (pels) */ 61 int ri_height; /* height (pels) */ 62 int ri_stride; /* stride in bytes */ 63 64 /* 65 * These can optionally be left zeroed out. If you fill ri_font, 66 * but aren't using wsfont, set ri_wsfcookie to -1. 67 */ 68 struct wsdisplay_font *ri_font; 69 int ri_wsfcookie; /* wsfont cookie */ 70 void *ri_hw; /* driver private data; ignored by rasops */ 71 int ri_crow; /* cursor row */ 72 int ri_ccol; /* cursor column */ 73 int ri_flg; /* various operational flags */ 74 75 /* 76 * These are optional and will default if zero. Meaningless 77 * on depths other than 15, 16, 24 and 32 bits per pel. On 78 * 24 bit displays, ri_{r,g,b}num must be 8. 79 */ 80 u_char ri_rnum; /* number of bits for red */ 81 u_char ri_gnum; /* number of bits for green */ 82 u_char ri_bnum; /* number of bits for blue */ 83 u_char ri_rpos; /* which bit red starts at */ 84 u_char ri_gpos; /* which bit green starts at */ 85 u_char ri_bpos; /* which bit blue starts at */ 86 87 /* These are filled in by rasops_init() */ 88 int ri_emuwidth; /* width we actually care about */ 89 int ri_emuheight; /* height we actually care about */ 90 int ri_emustride; /* bytes per row we actually care about */ 91 int ri_rows; /* number of rows (characters, not pels) */ 92 int ri_cols; /* number of columns (characters, not pels) */ 93 int ri_delta; /* row delta in bytes */ 94 int ri_pelbytes; /* bytes per pel (may be zero) */ 95 int ri_fontscale; /* fontheight * fontstride */ 96 int ri_xscale; /* fontwidth * pelbytes */ 97 int ri_yscale; /* fontheight * stride */ 98 u_char *ri_origbits; /* where screen bits actually start */ 99 int ri_xorigin; /* where ri_bits begins (x) */ 100 int ri_yorigin; /* where ri_bits begins (y) */ 101 int32_t ri_devcmap[16]; /* color -> framebuffer data */ 102 103 /* The emulops you need to use, and the screen caps for wscons */ 104 struct wsdisplay_emulops ri_ops; 105 int ri_caps; 106 107 /* Callbacks so we can share some code */ 108 void (*ri_do_cursor)(struct rasops_info *); 109 void (*ri_updatecursor)(struct rasops_info *); 110 111 #if NRASOPS_ROTATION > 0 112 /* Used to intercept putchar to permit display rotation */ 113 struct wsdisplay_emulops ri_real_ops; 114 #endif 115 }; 116 117 #define DELTA(p, d, cast) ((p) = (cast)((caddr_t)(p) + (d))) 118 119 /* 120 * rasops_init(). 121 * 122 * Integer parameters are the number of rows and columns we'd *like*. 123 * 124 * In terms of optimization, fonts that are a multiple of 8 pixels wide 125 * work the best. 126 * 127 * rasops_init() takes care of rasops_reconfig(). The parameters to both 128 * are the same. If calling rasops_reconfig() to change the font and 129 * ri_wsfcookie >= 0, you must call wsfont_unlock() on it, and reset it 130 * to -1 (or a new, valid cookie). 131 */ 132 133 /* 134 * Per-depth initialization functions. These should not be called outside 135 * the rasops code. 136 */ 137 void rasops1_init(struct rasops_info *); 138 void rasops2_init(struct rasops_info *); 139 void rasops4_init(struct rasops_info *); 140 void rasops8_init(struct rasops_info *); 141 void rasops15_init(struct rasops_info *); 142 void rasops24_init(struct rasops_info *); 143 void rasops32_init(struct rasops_info *); 144 145 /* rasops.c */ 146 int rasops_init(struct rasops_info *, int, int); 147 int rasops_reconfig(struct rasops_info *, int, int); 148 void rasops_eraserows(void *, int, int, long); 149 void rasops_erasecols(void *, int, int, int, long); 150 151 extern const u_char rasops_isgray[16]; 152 extern const u_char rasops_cmap[256*3]; 153 154 #endif /* _RASOPS_H_ */ 155