129 lines
3.2 KiB
C
129 lines
3.2 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2011,2012,2013 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/term.h>
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#include <grub/misc.h>
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#include <grub/types.h>
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#include <grub/err.h>
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#include <grub/dl.h>
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#include <grub/time.h>
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#include <grub/speaker.h>
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GRUB_MOD_LICENSE ("GPLv3+");
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#define BASE_TIME 250
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static const char codes[0x80][6] =
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{
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['0'] = { 3, 3, 3, 3, 3, 0 },
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['1'] = { 1, 3, 3, 3, 3, 0 },
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['2'] = { 1, 1, 3, 3, 3, 0 },
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['3'] = { 1, 1, 1, 3, 3, 0 },
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['4'] = { 1, 1, 1, 1, 3, 0 },
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['5'] = { 1, 1, 1, 1, 1, 0 },
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['6'] = { 3, 1, 1, 1, 1, 0 },
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['7'] = { 3, 3, 1, 1, 1, 0 },
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['8'] = { 3, 3, 3, 1, 1, 0 },
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['9'] = { 3, 3, 3, 3, 1, 0 },
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['a'] = { 1, 3, 0 },
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['b'] = { 3, 1, 1, 1, 0 },
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['c'] = { 3, 1, 3, 1, 0 },
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['d'] = { 3, 1, 1, 0 },
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['e'] = { 1, 0 },
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['f'] = { 1, 1, 3, 1, 0 },
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['g'] = { 3, 3, 1, 0 },
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['h'] = { 1, 1, 1, 1, 0 },
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['i'] = { 1, 1, 0 },
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['j'] = { 1, 3, 3, 3, 0 },
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['k'] = { 3, 1, 3, 0 },
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['l'] = { 1, 3, 1, 1, 0 },
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['m'] = { 3, 3, 0 },
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['n'] = { 3, 1, 0 },
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['o'] = { 3, 3, 3, 0 },
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['p'] = { 1, 3, 3, 1, 0 },
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['q'] = { 3, 3, 1, 3, 0 },
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['r'] = { 1, 3, 1, 0 },
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['s'] = { 1, 1, 1, 0 },
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['t'] = { 3, 0 },
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['u'] = { 1, 1, 3, 0 },
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['v'] = { 1, 1, 1, 3, 0 },
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['w'] = { 1, 3, 3, 0 },
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['x'] = { 3, 1, 1, 3, 0 },
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['y'] = { 3, 1, 3, 3, 0 },
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['z'] = { 3, 3, 1, 1, 0 }
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};
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static void
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grub_audio_tone (int length)
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{
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grub_speaker_beep_on (1000);
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grub_millisleep (length);
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grub_speaker_beep_off ();
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}
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static void
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grub_audio_putchar (struct grub_term_output *term __attribute__ ((unused)),
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const struct grub_unicode_glyph *c_in)
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{
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grub_uint8_t c;
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int i;
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/* For now, do not try to use a surrogate pair. */
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if (c_in->base > 0x7f)
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c = '?';
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else
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c = grub_tolower (c_in->base);
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for (i = 0; codes[c][i]; i++)
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{
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grub_audio_tone (codes[c][i] * BASE_TIME);
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grub_millisleep (BASE_TIME);
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}
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grub_millisleep (2 * BASE_TIME);
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}
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static int
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dummy (void)
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{
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return 0;
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}
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static struct grub_term_output grub_audio_term_output =
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{
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.name = "morse",
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.init = (void *) dummy,
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.fini = (void *) dummy,
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.putchar = grub_audio_putchar,
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.getwh = (void *) dummy,
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.getxy = (void *) dummy,
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.gotoxy = (void *) dummy,
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.cls = (void *) dummy,
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.setcolorstate = (void *) dummy,
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.setcursor = (void *) dummy,
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.flags = GRUB_TERM_CODE_TYPE_ASCII | GRUB_TERM_DUMB
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};
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GRUB_MOD_INIT (morse)
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{
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grub_term_register_output ("audio", &grub_audio_term_output);
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}
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GRUB_MOD_FINI (morse)
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{
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grub_term_unregister_output (&grub_audio_term_output);
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}
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