220 lines
6.4 KiB
C
220 lines
6.4 KiB
C
/* $NetBSD: grfabs_reg.h,v 1.5 1995/09/04 19:41:41 leo Exp $ */
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/*
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* Copyright (c) 1995 Leo Weppelman
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* Copyright (c) 1994 Christian E. Hopps
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* All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christian E. Hopps.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _GRFABS_REG_H
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#define _GRFABS_REG_H
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struct point {
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long x;
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long y;
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};
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typedef struct point point_t;
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struct dimension {
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u_long width;
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u_long height;
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};
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typedef struct dimension dimen_t;
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struct box {
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long x;
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long y;
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u_long width;
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u_long height;
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};
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typedef struct box box_t;
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struct rectangle {
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long left;
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long top;
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long right;
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long bottom;
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};
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typedef struct rectangle rect_t;
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typedef struct bitmap bmap_t;
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typedef struct colormap colormap_t;
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typedef struct display_mode dmode_t;
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/*
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* View stuff.
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*/
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struct view {
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bmap_t *bitmap; /* bitmap. */
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box_t display; /* viewable area. */
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dmode_t *mode; /* the mode for this view */
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colormap_t *colormap; /* the colormap for this view */
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int flags;
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};
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typedef struct view view_t;
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/* View-flags: */
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#define VF_DISPLAY 1 /* view is on the air now */
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/*
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* Bitmap stuff.
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*/
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struct bitmap {
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u_short bytes_per_row; /* number of bytes per display row. */
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u_short rows; /* number of display rows. */
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u_short depth; /* depth of bitmap. */
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u_char *plane; /* plane data for bitmap. */
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u_char *hw_address; /* mappable bitplane pointer. */
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};
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/*
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* Colormap stuff.
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*/
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struct colormap {
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u_char type; /* what type of entries these are. */
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union {
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u_char grey; /* CM_GREYSCALE */
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struct { /* CM_COLOR */
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u_char red;
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u_char green;
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u_char blue;
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} rgb_mask;
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} valid_mask;
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u_short first; /* color register entry[0] refers to */
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u_short size; /* number of entries */
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u_long *entry; /* the table of actual color values */
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};
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/*
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* Mask short-hands
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*/
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#define grey_mask valid_mask.grey
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#define red_mask valid_mask.rgb_mask.red
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#define green_mask valid_mask.rgb_mask.green
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#define blue_mask valid_mask.rgb_mask.blue
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enum colormap_type {
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CM_MONO, /* only on or off allowed */
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CM_GREYSCALE, /* grey values */
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CM_COLOR /* RGB values */
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};
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#define MAX_CENTRIES 256 /* that all there is */
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/*
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* Create a colormap entry
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*/
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#define MAKE_COLOR_ENTRY(r,g,b) (((r & 0xff)<<16)|((g & 0xff)<<8)|(b & 0xff))
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#define MAKE_MONO_ENTRY(x) ((x) ? 1 : 0)
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#define MAKE_GREY_ENTRY(l) (l & 0xff)
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#define CM_L2TT(v) \
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(((0x000f0000 & (v)) >> 8) | ((0x00000f00 & (v)) >> 4) |\
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(0x0000000f & (v)))
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#define CM_TT2L(v) \
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((((0x00000f00 & (v)) * 0xff / 0xf) << 8) |\
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(((0x000000f0 & (v)) * 0xff / 0xf) << 4) |\
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(0x0000000f & (v)) * 0xff / 0xf)
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#define CM_L2FAL(v) \
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(((0x003f0000 & (v)) << 10) | ((0x00003f00 & (v)) << 10) |\
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(0x0000003f & (v)) << 2)
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#define CM_FAL2L(v) \
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(((((0xfc000000 & (v)) >> 10) * 0xff / 0x3f) & 0x00ff0000) |\
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((((0x00fc0000 & (v)) >> 10) * 0xff / 0x3f) & 0x0000ff00) |\
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((0x000000fc & (v)) >> 2) * 0xff / 0x3f)
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#define CM_L2ST(v) \
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(((0x000e0000 & (v)) >> 9) | ((0x00000e00 & (v)) >> 5) |\
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(0x0000000e & (v)) >> 1)
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#define CM_ST2L(v) \
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(((((0x00000700 & (v)) * 0xff / 0x7) << 8) & 0x00ff0000) |\
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((((0x00000070 & (v)) * 0xff / 0x7) << 4) & 0x0000ff00) |\
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(0x00000007 & (v)) * 0xff / 0x7)
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struct grfabs_sw {
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void (*display_view) __P((view_t*));
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view_t * (*alloc_view) __P((dmode_t *, dimen_t *, u_char));
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void (*free_view) __P((view_t *));
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void (*remove_view) __P((view_t *));
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int (*use_colormap) __P((view_t *, colormap_t *));
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};
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/* display mode */
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struct display_mode {
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LIST_ENTRY(display_mode) link;
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u_char *name; /* logical name for mode. */
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dimen_t size; /* screen size */
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u_char depth; /* screen depth */
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u_short vm_reg; /* video mode register */
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struct grfabs_sw *grfabs_funcs; /* hardware switch table */
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view_t *current_view; /* view displaying me */
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};
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/*
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* Definition of available graphic mode list.
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*/
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typedef LIST_HEAD(modelist, display_mode) MODES;
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/*
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* Misc draw related macros.
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*/
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#define INIT_BOX(b,xx,yy,ww,hh) \
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do { \
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(b)->x = xx; \
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(b)->y = yy; \
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(b)->width = ww; \
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(b)->height = hh; \
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} while(0)
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/*
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* Common variables
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*/
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extern view_t gra_con_view;
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extern colormap_t gra_con_cmap;
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extern long gra_con_colors[MAX_CENTRIES];
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extern u_long gra_def_color16[16];
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/*
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* Prototypes:
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*/
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#ifdef FALCON_VIDEO
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void falcon_probe_video __P((MODES *));
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#endif /* FALCON_VIDEO */
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#ifdef TT_VIDEO
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void tt_probe_video __P((MODES *));
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#endif /* TT_VIDEO */
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view_t *grf_alloc_view __P((dmode_t *d, dimen_t *dim, u_char depth));
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dmode_t *grf_get_best_mode __P((dimen_t *dim, u_char depth));
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void grf_display_view __P((view_t *v));
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void grf_remove_view __P((view_t *v));
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void grf_free_view __P((view_t *v));
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int grf_get_colormap __P((view_t *, colormap_t *));
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int grf_use_colormap __P((view_t *, colormap_t *));
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#endif /* _GRFABS_REG_H */
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