grfabs_reg.h revision 1.7
1 /* $NetBSD: grfabs_reg.h,v 1.7 1996/09/16 06:43:35 leo Exp $ */ 2 3 /* 4 * Copyright (c) 1995 Leo Weppelman 5 * Copyright (c) 1994 Christian E. Hopps 6 * All rights reserved. 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Christian E. Hopps. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #ifndef _GRFABS_REG_H 34 #define _GRFABS_REG_H 35 36 struct point { 37 long x; 38 long y; 39 }; 40 typedef struct point point_t; 41 42 struct dimension { 43 u_long width; 44 u_long height; 45 }; 46 typedef struct dimension dimen_t; 47 48 struct box { 49 long x; 50 long y; 51 u_long width; 52 u_long height; 53 }; 54 typedef struct box box_t; 55 56 struct rectangle { 57 long left; 58 long top; 59 long right; 60 long bottom; 61 }; 62 typedef struct rectangle rect_t; 63 64 typedef struct bitmap bmap_t; 65 typedef struct colormap colormap_t; 66 typedef struct display_mode dmode_t; 67 68 /* 69 * View stuff. 70 */ 71 72 struct view { 73 bmap_t *bitmap; /* bitmap. */ 74 box_t display; /* viewable area. */ 75 dmode_t *mode; /* the mode for this view */ 76 colormap_t *colormap; /* the colormap for this view */ 77 int flags; 78 }; 79 typedef struct view view_t; 80 81 /* View-flags: */ 82 #define VF_DISPLAY 1 /* view is on the air now */ 83 84 /* 85 * Bitmap stuff. 86 */ 87 struct bitmap { 88 u_short bytes_per_row; /* number of bytes per display row. */ 89 u_short rows; /* number of display rows. */ 90 u_short depth; /* depth of bitmap. */ 91 u_char *plane; /* plane data for bitmap. */ 92 u_char *hw_address; /* mappable bitplane pointer. */ 93 u_char *regs; /* where the registers are */ 94 u_char *hw_regs; /* mappable registers */ 95 u_short reg_size; /* size of the register area */ 96 }; 97 98 /* 99 * Colormap stuff. 100 */ 101 struct colormap { 102 u_char type; /* what type of entries these are. */ 103 union { 104 u_char grey; /* CM_GREYSCALE */ 105 struct { /* CM_COLOR */ 106 u_char red; 107 u_char green; 108 u_char blue; 109 } rgb_mask; 110 } valid_mask; 111 u_short first; /* color register entry[0] refers to */ 112 u_short size; /* number of entries */ 113 u_long *entry; /* the table of actual color values */ 114 }; 115 116 /* 117 * Mask short-hands 118 */ 119 #define grey_mask valid_mask.grey 120 #define red_mask valid_mask.rgb_mask.red 121 #define green_mask valid_mask.rgb_mask.green 122 #define blue_mask valid_mask.rgb_mask.blue 123 124 enum colormap_type { 125 CM_MONO, /* only on or off allowed */ 126 CM_GREYSCALE, /* grey values */ 127 CM_COLOR /* RGB values */ 128 }; 129 130 #define MAX_CENTRIES 256 /* that all there is */ 131 /* 132 * Create a colormap entry 133 */ 134 #define MAKE_COLOR_ENTRY(r,g,b) (((r & 0xff)<<16)|((g & 0xff)<<8)|(b & 0xff)) 135 #define MAKE_MONO_ENTRY(x) ((x) ? 1 : 0) 136 #define MAKE_GREY_ENTRY(l) (l & 0xff) 137 138 struct grfabs_sw { 139 void (*display_view) __P((view_t*)); 140 view_t * (*alloc_view) __P((dmode_t *, dimen_t *, u_char)); 141 void (*free_view) __P((view_t *)); 142 void (*remove_view) __P((view_t *)); 143 int (*use_colormap) __P((view_t *, colormap_t *)); 144 }; 145 146 /* display mode */ 147 struct display_mode { 148 LIST_ENTRY(display_mode) link; 149 u_char *name; /* logical name for mode. */ 150 dimen_t size; /* screen size */ 151 u_char depth; /* screen depth */ 152 void *data; /* opaque driver data */ 153 struct grfabs_sw *grfabs_funcs; /* hardware switch table */ 154 view_t *current_view; /* view displaying me */ 155 }; 156 157 /* 158 * Definition of available graphic mode list. 159 */ 160 typedef LIST_HEAD(modelist, display_mode) MODES; 161 162 /* 163 * Misc draw related macros. 164 */ 165 #define INIT_BOX(b,xx,yy,ww,hh) \ 166 do { \ 167 (b)->x = xx; \ 168 (b)->y = yy; \ 169 (b)->width = ww; \ 170 (b)->height = hh; \ 171 } while(0) 172 173 174 /* 175 * Prototype for the probe function 176 */ 177 typedef void (*grf_probe_t) __P((MODES *)); 178 179 /* 180 * Common variables 181 */ 182 extern view_t gra_con_view; 183 extern colormap_t gra_con_cmap; 184 extern long gra_con_colors[MAX_CENTRIES]; 185 extern u_long gra_def_color16[16]; 186 187 /* 188 * Prototypes: 189 */ 190 int grfabs_probe __P((grf_probe_t)); 191 view_t *grf_alloc_view __P((dmode_t *d, dimen_t *dim, u_char depth)); 192 dmode_t *grf_get_best_mode __P((dimen_t *dim, u_char depth)); 193 void grf_display_view __P((view_t *v)); 194 void grf_remove_view __P((view_t *v)); 195 void grf_free_view __P((view_t *v)); 196 int grf_get_colormap __P((view_t *, colormap_t *)); 197 int grf_use_colormap __P((view_t *, colormap_t *)); 198 199 #endif /* _GRFABS_REG_H */ 200
Indexes created Wed Sep 24 05:09:52 GMT 2025