/* $NetBSD: grfabs_reg.h,v 1.15 2023/01/06 10:28:28 tsutsui Exp $ */ /* * Copyright (c) 1995 Leo Weppelman * Copyright (c) 1994 Christian E. Hopps * All rights reserved. * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Christian E. Hopps. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef _GRFABS_REG_H #define _GRFABS_REG_H struct point { long x; long y; }; typedef struct point point_t; struct dimension { u_long width; u_long height; }; typedef struct dimension dimen_t; struct box { long x; long y; u_long width; u_long height; }; typedef struct box box_t; struct rectangle { long left; long top; long right; long bottom; }; typedef struct rectangle rect_t; typedef struct bitmap bmap_t; typedef struct colormap colormap_t; typedef struct display_mode dmode_t; /* * View stuff. */ struct view { bmap_t *bitmap; /* bitmap. */ box_t display; /* viewable area. */ dmode_t *mode; /* the mode for this view */ colormap_t *colormap; /* the colormap for this view */ int flags; void *save_area; /* Save frame-buffer when not on screen */ }; typedef struct view view_t; /* View-flags: */ #define VF_DISPLAY 1 /* view is on the air now */ /* * Bitmap stuff. */ struct bitmap { u_short bytes_per_row; /* number of bytes per display row. */ u_short rows; /* number of display rows. */ u_short depth; /* depth of bitmap. */ u_char *plane; /* plane data for bitmap/vga. */ u_char *hw_address; /* mappable linear bitplane pointer. */ u_char *vga_address; /* mappable vga bitplane pointer */ u_char *regs; /* where the registers are */ u_char *hw_regs; /* mappable registers */ u_short reg_size; /* size of the register area */ u_int phys_mappable; /* amount of mappable lin. plane mem. */ u_int vga_mappable; /* amount of mappable vga plane mem. */ u_int lin_base; /* linear framebuffer card base */ u_int vga_base; /* vga memory card base */ }; /* * Colormap stuff. */ struct colormap { u_char type; /* what type of entries these are. */ union { u_char grey; /* CM_GREYSCALE */ struct { /* CM_COLOR */ u_char red; u_char green; u_char blue; } rgb_mask; } valid_mask; u_short first; /* color register entry[0] refers to */ u_short size; /* number of entries */ u_long *entry; /* the table of actual color values */ }; /* * Mask short-hands */ #define grey_mask valid_mask.grey #define red_mask valid_mask.rgb_mask.red #define green_mask valid_mask.rgb_mask.green #define blue_mask valid_mask.rgb_mask.blue enum colormap_type { CM_MONO, /* only on or off allowed */ CM_GREYSCALE, /* grey values */ CM_COLOR /* RGB values */ }; #define MAX_CENTRIES 256 /* that all there is */ /* * Create a colormap entry */ #define MAKE_COLOR_ENTRY(r,g,b) (((r & 0xff)<<16)|((g & 0xff)<<8)|(b & 0xff)) #define MAKE_MONO_ENTRY(x) ((x) ? 1 : 0) #define MAKE_GREY_ENTRY(l) (l & 0xff) struct grfabs_sw { void (*display_view)(view_t*); view_t * (*alloc_view)(dmode_t *, dimen_t *, u_char); void (*free_view)(view_t *); void (*remove_view)(view_t *); void (*save_view)(view_t *); int (*use_colormap)(view_t *, colormap_t *); }; /* display mode */ struct display_mode { LIST_ENTRY(display_mode) link; const u_char *name; /* logical name for mode. */ dimen_t size; /* screen size */ u_char depth; /* screen depth */ void *data; /* opaque driver data */ struct grfabs_sw *grfabs_funcs; /* hardware switch table */ view_t *current_view; /* view displaying me */ }; /* * Definition of available graphic mode list. */ typedef LIST_HEAD(modelist, display_mode) MODES; /* * Misc draw related macros. */ #define INIT_BOX(b,xx,yy,ww,hh) \ do { \ (b)->x = xx; \ (b)->y = yy; \ (b)->width = ww; \ (b)->height = hh; \ } while(0) /* * Prototype for the probe function */ typedef void (*grf_probe_t)(MODES *); /* * Common variables */ extern view_t gra_con_view; extern colormap_t gra_con_cmap; extern long gra_con_colors[MAX_CENTRIES]; extern u_long gra_def_color16[16]; /* * Prototypes: */ int grfabs_probe(grf_probe_t); view_t *grf_alloc_view(dmode_t *d, dimen_t *dim, u_char depth); dmode_t *grf_get_best_mode(dimen_t *dim, u_char depth); void grf_display_view(view_t *v); void grf_remove_view(view_t *v); void grf_free_view(view_t *v); int grf_get_colormap(view_t *, colormap_t *); int grf_use_colormap(view_t *, colormap_t *); void grf_save_view(view_t *v); #endif /* _GRFABS_REG_H */
