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vt_termcolors.c
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vt_termcolors.h
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Editing: vt_termcolors.c
/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2013 The FreeBSD Foundation * All rights reserved. * * This software was developed by Aleksandr Rybalko under sponsorship from the * FreeBSD Foundation. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); #include <sys/param.h> #include <sys/kernel.h> #include <sys/libkern.h> #include <dev/vt/colors/vt_termcolors.h> static struct { unsigned char r; /* Red percentage value. */ unsigned char g; /* Green percentage value. */ unsigned char b; /* Blue percentage value. */ } color_def[NCOLORS] = { {0, 0, 0}, /* black */ {50, 0, 0}, /* dark red */ {0, 50, 0}, /* dark green */ {77, 63, 0}, /* dark yellow */ {20, 40, 64}, /* dark blue */ {50, 0, 50}, /* dark magenta */ {0, 50, 50}, /* dark cyan */ {75, 75, 75}, /* light gray */ {18, 20, 21}, /* dark gray */ {100, 0, 0}, /* light red */ {0, 100, 0}, /* light green */ {100, 100, 0}, /* light yellow */ {45, 62, 81}, /* light blue */ {100, 0, 100}, /* light magenta */ {0, 100, 100}, /* light cyan */ {100, 100, 100}, /* white */ }; static int vt_parse_rgb_triplet(const char *rgb, unsigned char *r, unsigned char *g, unsigned char *b) { unsigned long v; const char *ptr; char *endptr; ptr = rgb; /* Handle #rrggbb case */ if (*ptr == '#') { if (strlen(ptr) != 7) return (-1); v = strtoul(ptr + 1, &endptr, 16); if (*endptr != '\0') return (-1); *r = (v >> 16) & 0xff; *g = (v >> 8) & 0xff; *b = v & 0xff; return (0); } /* "r, g, b" case */ v = strtoul(ptr, &endptr, 10); if (ptr == endptr) return (-1); if (v > 255) return (-1); *r = v & 0xff; ptr = endptr; /* skip separator */ while (*ptr == ',' || *ptr == ' ') ptr++; v = strtoul(ptr, &endptr, 10); if (ptr == endptr) return (-1); if (v > 255) return (-1); *g = v & 0xff; ptr = endptr; /* skip separator */ while (*ptr == ',' || *ptr == ' ') ptr++; v = strtoul(ptr, &endptr, 10); if (ptr == endptr) return (-1); if (v > 255) return (-1); *b = v & 0xff; ptr = endptr; /* skip trailing spaces */ while (*ptr == ' ') ptr++; /* unexpected characters at the end of the string */ if (*ptr != 0) return (-1); return (0); } static void vt_palette_init(void) { int i; char rgb[32]; char tunable[32]; unsigned char r, g, b; for (i = 0; i < NCOLORS; i++) { snprintf(tunable, sizeof(tunable), "kern.vt.color.%d.rgb", i); if (TUNABLE_STR_FETCH(tunable, rgb, sizeof(rgb))) { if (vt_parse_rgb_triplet(rgb, &r, &g, &b) == 0) { /* convert to percentages */ color_def[i].r = r*100/255; color_def[i].g = g*100/255; color_def[i].b = b*100/255; } } } } int vt_generate_cons_palette(uint32_t *palette, int format, uint32_t rmax, int roffset, uint32_t gmax, int goffset, uint32_t bmax, int boffset) { int i; switch (format) { case COLOR_FORMAT_VGA: for (i = 0; i < NCOLORS; i++) palette[i] = cons_to_vga_colors[i]; break; case COLOR_FORMAT_RGB: vt_palette_init(); #define CF(_f, _i) ((_f ## max * color_def[(_i)]._f / 100) << _f ## offset) for (i = 0; i < NCOLORS; i++) palette[i] = CF(r, i) | CF(g, i) | CF(b, i); #undef CF break; default: return (ENODEV); } return (0); }
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