vt_termcolors.c

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2013 The FreeBSD Foundation
    5  *
    6  * This software was developed by Aleksandr Rybalko under sponsorship from the
    7  * FreeBSD Foundation.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   28  * SUCH DAMAGE.
   29  */
   30 
   31 #include <sys/cdefs.h>
   32 __FBSDID("$FreeBSD$");
   33 
   34 #include <sys/param.h>
   35 #include <sys/kernel.h>
   36 #include <sys/libkern.h>
   37 #include <sys/fbio.h>
   38 
   39 #include <dev/vt/colors/vt_termcolors.h>
   40 
   41 static struct {
   42         unsigned char r;        /* Red percentage value. */
   43         unsigned char g;        /* Green percentage value. */
   44         unsigned char b;        /* Blue percentage value. */
   45 } color_def[NCOLORS] = {
   46         {0,     0,      0},     /* black */
   47         {50,    0,      0},     /* dark red */
   48         {0,     50,     0},     /* dark green */
   49         {77,    63,     0},     /* dark yellow */
   50         {20,    40,     64},    /* dark blue */
   51         {50,    0,      50},    /* dark magenta */
   52         {0,     50,     50},    /* dark cyan */
   53         {75,    75,     75},    /* light gray */
   54 
   55         {18,    20,     21},    /* dark gray */
   56         {100,   0,      0},     /* light red */
   57         {0,     100,    0},     /* light green */
   58         {100,   100,    0},     /* light yellow */
   59         {45,    62,     81},    /* light blue */
   60         {100,   0,      100},   /* light magenta */
   61         {0,     100,    100},   /* light cyan */
   62         {100,   100,    100},   /* white */
   63 };
   64 
   65 static int
   66 vt_parse_rgb_triplet(const char *rgb, unsigned char *r,
   67     unsigned char *g, unsigned char *b)
   68 {
   69         unsigned long v;
   70         const char *ptr;
   71         char *endptr;
   72 
   73         ptr = rgb;
   74 
   75         /* Handle #rrggbb case */
   76         if (*ptr == '#') {
   77                 if (strlen(ptr) != 7)
   78                         return (-1);
   79                 v = strtoul(ptr + 1, &endptr, 16);
   80                 if (*endptr != '\0')
   81                         return (-1);
   82 
   83                 *r = (v >> 16) & 0xff;
   84                 *g = (v >>  8) & 0xff;
   85                 *b = v & 0xff;
   86 
   87                 return (0);
   88         }
   89 
   90         /* "r, g, b" case */
   91         v = strtoul(ptr, &endptr, 10);
   92         if (ptr == endptr)
   93                 return (-1);
   94         if (v > 255)
   95                 return (-1);
   96         *r = v & 0xff;
   97         ptr = endptr;
   98 
   99         /* skip separator */
  100         while (*ptr == ',' || *ptr == ' ')
  101                 ptr++;
  102 
  103         v = strtoul(ptr, &endptr, 10);
  104         if (ptr == endptr)
  105                 return (-1);
  106         if (v > 255)
  107                 return (-1);
  108         *g = v & 0xff;
  109         ptr = endptr;
  110 
  111         /* skip separator */
  112         while (*ptr == ',' || *ptr == ' ')
  113                 ptr++;
  114 
  115         v = strtoul(ptr, &endptr, 10);
  116         if (ptr == endptr)
  117                 return (-1);
  118         if (v > 255)
  119                 return (-1);
  120         *b = v & 0xff;
  121         ptr = endptr;
  122 
  123         /* skip trailing spaces */
  124         while (*ptr == ' ')
  125                 ptr++;
  126 
  127         /* unexpected characters at the end of the string */
  128         if (*ptr != 0)
  129                 return (-1);
  130 
  131         return (0);
  132 }
  133 
  134 static void
  135 vt_palette_init(void)
  136 {
  137         int i;
  138         char rgb[32];
  139         char tunable[32];
  140         unsigned char r, g, b;
  141 
  142         for (i = 0; i < NCOLORS; i++) {
  143                 snprintf(tunable, sizeof(tunable),
  144                     "kern.vt.color.%d.rgb", i);
  145                 if (TUNABLE_STR_FETCH(tunable, rgb, sizeof(rgb))) {
  146                         if (vt_parse_rgb_triplet(rgb, &r, &g, &b) == 0) {
  147                                 /* convert to percentages */
  148                                 color_def[i].r = r*100/255;
  149                                 color_def[i].g = g*100/255;
  150                                 color_def[i].b = b*100/255;
  151                         }
  152                 }
  153         }
  154 }
  155 
  156 static int
  157 vt_generate_cons_palette(uint32_t *palette, int format, uint32_t rmax,
  158     int roffset, uint32_t gmax, int goffset, uint32_t bmax, int boffset)
  159 {
  160         int i;
  161 
  162         switch (format) {
  163         case COLOR_FORMAT_VGA:
  164                 for (i = 0; i < NCOLORS; i++)
  165                         palette[i] = cons_to_vga_colors[i];
  166                 break;
  167         case COLOR_FORMAT_RGB:
  168                 vt_palette_init();
  169 #define CF(_f, _i) ((_f ## max * color_def[(_i)]._f / 100) << _f ## offset)
  170                 for (i = 0; i < NCOLORS; i++)
  171                         palette[i] = CF(r, i) | CF(g, i) | CF(b, i);
  172 #undef  CF
  173                 break;
  174         default:
  175                 return (ENODEV);
  176         }
  177 
  178         return (0);
  179 }
  180 
  181 int
  182 vt_config_cons_colors(struct fb_info *info, int format, uint32_t rmax,
  183     int roffset, uint32_t gmax, int goffset, uint32_t bmax, int boffset)
  184 {
  185         if (format == COLOR_FORMAT_RGB) {
  186                 info->fb_rgboffs.red = roffset;
  187                 info->fb_rgboffs.green = goffset;
  188                 info->fb_rgboffs.blue = boffset;
  189         } else
  190                 memset(&info->fb_rgboffs, 0, sizeof(info->fb_rgboffs));
  191 
  192         return (vt_generate_cons_palette(info->fb_cmap, format, rmax,
  193             roffset, gmax, goffset, bmax, boffset));
  194 }

Cache object: 24982b6620e9aa5a363e2f7163aaf2ae

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

FreeBSD/Linux Kernel Cross Reference sys/dev/vt/colors/vt_termcolors.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/vt/colors/vt_termcolors.c