1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2011,2012,2013 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/term.h>
#include <grub/misc.h>
#include <grub/types.h>
#include <grub/err.h>
#include <grub/dl.h>
#include <grub/time.h>
#include <grub/speaker.h>
GRUB_MOD_LICENSE ("GPLv3+");
#define BASE_TIME 250
#define DIH 1
#define DAH 3
#define END 0
static const char codes[0x80][6] =
{
['0'] = { DAH, DAH, DAH, DAH, DAH, END },
['1'] = { DIH, DAH, DAH, DAH, DAH, END },
['2'] = { DIH, DIH, DAH, DAH, DAH, END },
['3'] = { DIH, DIH, DIH, DAH, DAH, END },
['4'] = { DIH, DIH, DIH, DIH, DAH, END },
['5'] = { DIH, DIH, DIH, DIH, DIH, END },
['6'] = { DAH, DIH, DIH, DIH, DIH, END },
['7'] = { DAH, DAH, DIH, DIH, DIH, END },
['8'] = { DAH, DAH, DAH, DIH, DIH, END },
['9'] = { DAH, DAH, DAH, DAH, DIH, END },
['a'] = { DIH, DAH, END },
['b'] = { DAH, DIH, DIH, DIH, END },
['c'] = { DAH, DIH, DAH, DIH, END },
['d'] = { DAH, DIH, DIH, END },
['e'] = { DIH, END },
['f'] = { DIH, DIH, DAH, DIH, END },
['g'] = { DAH, DAH, DIH, END },
['h'] = { DIH, DIH, DIH, DIH, END },
['i'] = { DIH, DIH, END },
['j'] = { DIH, DAH, DAH, DAH, END },
['k'] = { DAH, DIH, DAH, END },
['l'] = { DIH, DAH, DIH, DIH, END },
['m'] = { DAH, DAH, END },
['n'] = { DAH, DIH, END },
['o'] = { DAH, DAH, DAH, END },
['p'] = { DIH, DAH, DAH, DIH, END },
['q'] = { DAH, DAH, DIH, DAH, END },
['r'] = { DIH, DAH, DIH, END },
['s'] = { DIH, DIH, DIH, END },
['t'] = { DAH, END },
['u'] = { DIH, DIH, DAH, END },
['v'] = { DIH, DIH, DIH, DAH, END },
['w'] = { DIH, DAH, DAH, END },
['x'] = { DAH, DIH, DIH, DAH, END },
['y'] = { DAH, DIH, DAH, DAH, END },
['z'] = { DAH, DAH, DIH, DIH, END }
};
static void
grub_audio_tone (int length)
{
grub_speaker_beep_on (1000);
grub_millisleep (length);
grub_speaker_beep_off ();
}
static void
grub_audio_putchar (struct grub_term_output *term __attribute__ ((unused)),
const struct grub_unicode_glyph *c_in)
{
grub_uint8_t c;
int i;
/* For now, do not try to use a surrogate pair. */
if (c_in->base > 0x7f)
c = '?';
else
c = grub_tolower (c_in->base);
for (i = 0; codes[c][i]; i++)
{
grub_audio_tone (codes[c][i] * BASE_TIME);
grub_millisleep (BASE_TIME);
}
grub_millisleep (2 * BASE_TIME);
}
static int
dummy (void)
{
return 0;
}
static struct grub_term_output grub_audio_term_output =
{
.name = "morse",
.init = (void *) dummy,
.fini = (void *) dummy,
.putchar = grub_audio_putchar,
.getwh = (void *) dummy,
.getxy = (void *) dummy,
.gotoxy = (void *) dummy,
.cls = (void *) dummy,
.setcolorstate = (void *) dummy,
.setcursor = (void *) dummy,
.flags = GRUB_TERM_CODE_TYPE_ASCII | GRUB_TERM_DUMB,
.progress_update_divisor = GRUB_PROGRESS_NO_UPDATE
};
GRUB_MOD_INIT (morse)
{
grub_term_register_output ("audio", &grub_audio_term_output);
}
GRUB_MOD_FINI (morse)
{
grub_term_unregister_output (&grub_audio_term_output);
}
|
