rasops.h revision 1.24
1 /* $NetBSD: rasops.h,v 1.24 2010/04/17 13:36:22 nonaka 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 Andrew 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _RASOPS_H_ 33 #define _RASOPS_H_ 1 34 35 struct wsdisplay_font; 36 37 /* For rasops_info::ri_flg */ 38 #define RI_FULLCLEAR 0x01 /* eraserows() hack to clear full screen */ 39 #define RI_FORCEMONO 0x02 /* monochrome output even if we can do color */ 40 #define RI_BSWAP 0x04 /* framebuffer endianness doesn't match CPU */ 41 #define RI_CURSOR 0x08 /* cursor is switched on */ 42 #define RI_CLEAR 0x10 /* clear display on startup */ 43 #define RI_CENTER 0x20 /* center onscreen output */ 44 #define RI_CURSORCLIP 0x40 /* cursor is currently clipped */ 45 #define RI_CFGDONE 0x80 /* rasops_reconfig() completed successfully */ 46 #define RI_ROTATE_CW 0x100 /* display is rotated, quarter clockwise */ 47 #define RI_ROTATE_CCW 0x200 /* display is rotated, quarter counter-clockwise */ 48 #define RI_ROTATE_UD 0x400 /* display is rotated, upside-down */ 49 #define RI_ROTATE_MASK 0x700 50 51 struct rasops_info { 52 /* These must be filled in by the caller */ 53 int ri_depth; /* depth in bits */ 54 u_char *ri_bits; /* ptr to bits */ 55 int ri_width; /* width (pels) */ 56 int ri_height; /* height (pels) */ 57 int ri_stride; /* stride in bytes */ 58 59 /* 60 * If you want shadow framebuffer support, point ri_hwbits 61 * to the real framebuffer, and ri_bits to the shadow framebuffer 62 */ 63 u_char *ri_hwbits; 64 65 /* 66 * These can optionally be left zeroed out. If you fill ri_font, 67 * but aren't using wsfont, set ri_wsfcookie to -1. 68 */ 69 struct wsdisplay_font *ri_font; 70 int ri_wsfcookie; /* wsfont cookie */ 71 void *ri_hw; /* driver private data; ignored by rasops */ 72 int ri_crow; /* cursor row */ 73 int ri_ccol; /* cursor column */ 74 int ri_flg; /* various operational flags */ 75 76 /* 77 * These are optional and will default if zero. Meaningless 78 * on depths other than 15, 16, 24 and 32 bits per pel. On 79 * 24 bit displays, ri_{r,g,b}num must be 8. 80 */ 81 u_char ri_rnum; /* number of bits for red */ 82 u_char ri_gnum; /* number of bits for green */ 83 u_char ri_bnum; /* number of bits for blue */ 84 u_char ri_rpos; /* which bit red starts at */ 85 u_char ri_gpos; /* which bit green starts at */ 86 u_char ri_bpos; /* which bit blue starts at */ 87 88 /* These are filled in by rasops_init() */ 89 int ri_emuwidth; /* width we actually care about */ 90 int ri_emuheight; /* height we actually care about */ 91 int ri_emustride; /* bytes per row we actually care about */ 92 int ri_rows; /* number of rows (characters, not pels) */ 93 int ri_cols; /* number of columns (characters, not pels) */ 94 int ri_delta; /* row delta in bytes */ 95 int ri_pelbytes; /* bytes per pel (may be zero) */ 96 int ri_fontscale; /* fontheight * fontstride */ 97 int ri_xscale; /* fontwidth * pelbytes */ 98 int ri_yscale; /* fontheight * stride */ 99 u_char *ri_origbits; /* where screen bits actually start */ 100 u_char *ri_hworigbits; /* where hw bits actually start */ 101 int ri_xorigin; /* where ri_bits begins (x) */ 102 int ri_yorigin; /* where ri_bits begins (y) */ 103 int32_t ri_devcmap[16]; /* color -> framebuffer data */ 104 105 /* The emulops you need to use, and the screen caps for wscons */ 106 struct wsdisplay_emulops ri_ops; 107 int ri_caps; 108 109 /* Callbacks so we can share some code */ 110 void (*ri_do_cursor)(struct rasops_info *); 111 112 #if NRASOPS_ROTATION > 0 113 /* Used to intercept putchar to permit display rotation */ 114 struct wsdisplay_emulops ri_real_ops; 115 #endif 116 }; 117 118 #define DELTA(p, d, cast) ((p) = (cast)((char *)(p) + (d))) 119 120 #define CHAR_IN_FONT(c,font) \ 121 ((c) >= (font)->firstchar && \ 122 ((c) - (font)->firstchar) < (font)->numchars) 123 124 /* 125 * rasops_init(). 126 * 127 * Integer parameters are the number of rows and columns we'd *like*. 128 * 129 * In terms of optimization, fonts that are a multiple of 8 pixels wide 130 * work the best. 131 * 132 * rasops_init() takes care of rasops_reconfig(). The parameters to both 133 * are the same. If calling rasops_reconfig() to change the font and 134 * ri_wsfcookie >= 0, you must call wsfont_unlock() on it, and reset it 135 * to -1 (or a new, valid cookie). 136 */ 137 138 /* 139 * Per-depth initialization functions. These should not be called outside 140 * the rasops code. 141 */ 142 void rasops1_init(struct rasops_info *); 143 void rasops2_init(struct rasops_info *); 144 void rasops4_init(struct rasops_info *); 145 void rasops8_init(struct rasops_info *); 146 void rasops15_init(struct rasops_info *); 147 void rasops24_init(struct rasops_info *); 148 void rasops32_init(struct rasops_info *); 149 150 /* rasops.c */ 151 int rasops_init(struct rasops_info *, int, int); 152 int rasops_reconfig(struct rasops_info *, int, int); 153 void rasops_unpack_attr(long, int *, int *, int *); 154 void rasops_eraserows(void *, int, int, long); 155 void rasops_erasecols(void *, int, int, int, long); 156 void rasops_copycols(void *, int, int, int, int); 157 158 extern const u_char rasops_isgray[16]; 159 extern const u_char rasops_cmap[256*3]; 160 161 #endif /* _RASOPS_H_ */ 162
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