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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
|
/* bd-tsi.c, TSI specific key bindings and display commands
*
* dotscreen
* A braille interface to unix tty terminals
* Authors: Hadi Bargi Rangin bargi@dots.physics.orst.edu
* Bill Barry barryb@dots.physics.orst.edu
*
* Copyright (c) 1995 by Science Access Project, Oregon State University.
*
*
* This program 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, or (at your option)
* any later version.
*
* This program 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 this program (see the file COPYING); if not, see
* http://www.gnu.org/licenses/, or contact Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*
****************************************************************
*/
#include "config.h"
#include "screen.h"
#include "extern.h"
#include "braille.h"
#ifdef HAVE_BRAILLE
extern struct display *display;
struct key2rc {
int key;
int nr;
char *arg1;
char *arg2;
};
static int tsi_ctype = 1; /* cursor type, 0,1,2 */
static int tsi_line_type; /* indicates number of cells on powerbraille
display 01=20 cells 02=40 cells 03=80 cells */
static int display_status_tsi __P((void));
static int write_line_tsi __P((char *, int, int));
static void buttonpress_tsi __P((struct key2rc *));
static void buttonpress_navigator_40 __P((void));
static void buttonpress_powerbraille_40 __P((void));
static void buttonpress_powerbraille_80 __P((void));
int
bd_init_powerbraille_40()
{
bd.write_line_braille = write_line_tsi;
bd.buttonpress = buttonpress_powerbraille_40;
bd.bd_response_test = display_status_tsi;
bd.bd_ncells = 40;
tsi_line_type = 2;
return 0;
}
int
bd_init_powerbraille_80()
{
bd.write_line_braille = write_line_tsi;
bd.buttonpress = buttonpress_powerbraille_80;
bd.bd_response_test = display_status_tsi;
bd.bd_ncells = 80;
tsi_line_type = 3;
return 0;
}
int
bd_init_navigator_40()
{
bd.write_line_braille = write_line_tsi;
bd.buttonpress = buttonpress_navigator_40;
bd.bd_response_test = display_status_tsi;
bd.bd_ncells = 40;
tsi_line_type = 2;
return 0;
}
static int
display_status_tsi()
{
char obuf[3],ibuf[20];
int r;
obuf[0] = 0xff;
obuf[1] = 0xff;
obuf[2] = 0x0a;
r = read(bd.bd_fd, ibuf, 20); /* flush the input port */
r = write(bd.bd_fd, obuf, 3);
if (r != 3)
return -1;
/* we have written to the display asking for a response
we wait 1 second for the response, read it and if no
response we wait 2 seconds, if still no response,
return -1 to indicate no braille display available */
sleep(1);
r = read(bd.bd_fd, ibuf, 2);
if (r == -1)
{
sleep(2);
r = read(bd.bd_fd, ibuf, 2);
}
debug2("first chars from braille display %d %d\n",ibuf[0],ibuf[1]);
if (r != 2 || ibuf[0] != 0 || ibuf[1] != 5)
return -1;
r= read(bd.bd_fd,ibuf,2);
if (r != 2)
return -1;
debug2("braille display size:%d dots:%d\n", ibuf[0], ibuf[1]);
bd.bd_ncells = (unsigned char)ibuf[0];
if (bd.bd_ncells <= 1)
return -1;
r = read(bd.bd_fd,ibuf,1);
if (r != 1)
return -1;
if (ibuf[0] == 'V')
r = read(bd.bd_fd, ibuf, 3);
else
r = read(bd.bd_fd, ibuf + 1, 2) + 1;
if (r != 3)
return -1;
ibuf[3] = 0;
debug1("braille display version %s\n", ibuf);
bd.bd_version = atof(ibuf);
return 0;
}
static int
write_line_tsi (bstr,line_length, cursor_pos)
char *bstr;
int line_length, cursor_pos;
{
int obp, i;
bd.bd_obuf[0] = 0xff;
bd.bd_obuf[1] = 0xff;
bd.bd_obuf[2] = tsi_line_type;
bd.bd_obuf[3] = 0x07;
bd.bd_obuf[4] = cursor_pos;
bd.bd_obuf[5] = tsi_ctype;
obp=6;
for (i=0; i < line_length; i++)
{
bd.bd_obuf[2*i+obp] = 0;
bd.bd_obuf[2*i+1+obp] = bd.bd_btable[(int)(unsigned char)bstr[i]];
}
for (i=line_length; i < bd.bd_ncells; i++)
{
bd.bd_obuf[2*i+obp] = 0;
bd.bd_obuf[2*i+1+obp] = bd.bd_btable[(int)' '];
}
bd.bd_obuflen = 2*bd.bd_ncells + obp ;
return 0;
}
static struct key2rc keys_navigator_40[] = {
{0x4000000, RC_STUFF, "-k", "kl"}, /* 1 */
{0x10000000, RC_STUFF, "-k", "kr"}, /* 3 */
{0x8000000, RC_STUFF, "-k", "ku"}, /* 2 */
{0x20000000, RC_STUFF, "-k", "kd"}, /* 4 */
{0x2000, RC_BD_BC_LEFT, 0, 0}, /* 6 */
{0x8000, RC_BD_BC_RIGHT, 0, 0}, /* 8 */
{0x4000, RC_BD_BC_UP, 0, 0}, /* 7 */
{0x10000, RC_BD_BC_DOWN, 0, 0}, /* 9 */
{0x6000, RC_BD_UPPER_LEFT, 0, 0}, /* 6, 7 */
{0xc000, RC_BD_UPPER_RIGHT, 0, 0}, /* 7, 8 */
{0x12000, RC_BD_LOWER_LEFT, 0, 0}, /* 6, 9 */
{0x18000, RC_BD_LOWER_RIGHT, 0, 0}, /* 8, 9 */
{0xa000, RC_BD_INFO, "1032", 0}, /* bc 6, 8 */
{0x14000000, RC_BD_INFO, "2301", 0}, /* sc 1, 3 */
{0x4008000, RC_BD_INFO, "3330", 0}, /* bc+sc 1, 8 */
{0x8010000, RC_BD_BELL, 0, 0}, /* 2, 9 */
{0x8004000, RC_BD_EIGHTDOT, 0, 0}, /* 2, 7 */
{0x40000000, RC_STUFF, "\015", 0}, /* 5 */
{0x20000, RC_BD_LINK, 0, 0}, /* 10 */
{0x10002000, RC_BD_SCROLL, 0, 0}, /* 3, 6 */
{0x20010000, RC_BD_NCRC, "+", 0}, /* 4, 9 */
{0x14000, RC_BD_SKIP, 0, 0}, /* 7, 9*/
{-1, RC_ILLEGAL, 0, 0}
};
static struct key2rc keys_powerbraille_40[] = {
{0x4000000, RC_STUFF, "-k", "kl"}, /* 1 */
{0x10000000, RC_STUFF, "-k", "kr"}, /* 3 */
{0x8000000, RC_STUFF, "-k", "ku"}, /* 2 */
{0x20000000, RC_STUFF, "-k", "kd"}, /* 4 */
{0x2000, RC_BD_BC_LEFT, 0, 0}, /* 6 */
{0x8000, RC_BD_BC_RIGHT, 0, 0}, /* 8 */
{0x4000, RC_BD_BC_UP, 0, 0}, /* 7 */
{0x10000, RC_BD_BC_DOWN, 0, 0}, /* 9 */
{0x8002000, RC_BD_UPPER_LEFT, 0, 0}, /* 2, 6 */
{0xc000, RC_BD_UPPER_RIGHT, 0, 0}, /* 7, 8 */
{0x20002000, RC_BD_LOWER_LEFT, 0, 0}, /* 3, 6 */
{0x18000, RC_BD_LOWER_RIGHT, 0, 0}, /* 8, 9 */
{0x8008000, RC_BD_INFO, "1032", 0}, /* bc 2, 8 */
{0x6000, RC_BD_INFO, "2301", 0}, /* 6, 7 */
{0x8004000, RC_BD_INFO, "3330", 0}, /* bc+sc 2, 7 */
{0x8010000, RC_BD_BELL, 0, 0}, /* 2, 9 */
{0x20008000, RC_BD_EIGHTDOT, 0, 0}, /* 4, 6 */
{0x40000000, RC_STUFF, "\015", 0}, /* 5 */
{0x20000, RC_BD_LINK, 0, 0}, /* 10 */
{0xa000, RC_BD_SCROLL, 0, 0}, /* 6, 8 */
{0x20010000, RC_BD_NCRC, "+", 0}, /* 4, 9 */
{0x20004000, RC_BD_SKIP, 0, 0}, /* 4, 7 */
{-1, RC_ILLEGAL, 0, 0}
};
static struct key2rc keys_powerbraille_80[] = {
{0x4000000, RC_STUFF, "-k", "kl"}, /* 1 */
{0x10000000, RC_STUFF, "-k", "kr"}, /* 3 */
{0x8000000, RC_STUFF, "-k", "ku"}, /* 2 */
{0x20000000, RC_STUFF, "-k", "kd"}, /* 4 */
{0x40000, RC_BD_BC_LEFT, 0, 0}, /* 6 */
{0x100000, RC_BD_BC_RIGHT, 0, 0}, /* 8 */
{0x4000, RC_BD_BC_UP, 0, 0}, /* 7 */
{0x10000, RC_BD_BC_DOWN, 0, 0}, /* 9 */
{0x44000, RC_BD_UPPER_LEFT, 0, 0}, /* 6, 7 */
{0x104000, RC_BD_UPPER_RIGHT, 0, 0}, /* 7, 8 */
{0x50000, RC_BD_LOWER_LEFT, 0, 0}, /* 6, 9 */
{0x110000, RC_BD_LOWER_RIGHT, 0, 0}, /* 8, 9 */
{0x8100000, RC_BD_INFO, "1032", 0}, /* 2, 8 */
{0x8040000, RC_BD_INFO, "2301", 0}, /* 2, 6 */
{0x140000, RC_BD_INFO, "3330", 0}, /* 6, 8 */
{0x8010000, RC_BD_BELL, 0, 0}, /* 2, 9 */
{0x8004000, RC_BD_EIGHTDOT, 0, 0}, /* 2, 7 */
{0x40000000, RC_STUFF, "\015", 0}, /* 5 */
{0x20000, RC_BD_LINK, 0, 0}, /* 10 */
{0x20004000, RC_BD_SCROLL, 0, 0}, /* 4, 7 */
{0x20010000, RC_BD_NCRC, "+", 0}, /* 4, 9 */
{0x40010000, RC_BD_SKIP, 0, 0}, /* 5, 9 */
{-1, RC_ILLEGAL, 0, 0}
};
static void
buttonpress_tsi(tab)
struct key2rc *tab;
{
int i, nb;
int bkeys;
unsigned char buf[10];
nb = read(bd.bd_fd, buf, 10);
debug1("buttonpress_tsi: read %d bytes\n", nb);
for (i=0, bkeys=0; i < nb; i++)
{
switch (buf[i] & 0xE0)
{
case 0x00: bkeys += ((int)(buf[i] & 0x1f) ); break;
case 0x20: bkeys += ((int)(buf[i] & 0x1f) << 5 ); break;
case 0x40: bkeys += ((int)(buf[i] & 0x1f) << 9 ); break;
case 0x60: bkeys += ((int)(buf[i] & 0x1f) << 13 ); break;
case 0xA0: bkeys += ((int)(buf[i] & 0x1f) << 18 ); break;
case 0xC0: bkeys += ((int)(buf[i] & 0x1f) << 22 ); break;
case 0xE0: bkeys += ((int)(buf[i] & 0x1f) << 26 ); break;
default: break;
}
}
debug1("bkeys %x\n", bkeys);
for (i = 0; tab[i].key != -1; i++)
if (bkeys == tab[i].key)
break;
debug1("bkey index %d\n", i);
if (tab[i].key != -1 && tab[i].nr != RC_ILLEGAL)
{
char *args[3];
int argl[2];
struct action act;
args[0] = tab[i].arg1;
args[1] = tab[i].arg2;
args[2] = 0;
argl[0] = args[0] ? strlen(args[0]) : 0;
argl[1] = args[1] ? strlen(args[1]) : 0;
act.nr = tab[i].nr;
act.args = args;
act.argl = argl;
display = bd.bd_dpy;
DoAction(&act, -2);
}
}
static void
buttonpress_navigator_40()
{
buttonpress_tsi(keys_navigator_40);
}
static void
buttonpress_powerbraille_40()
{
buttonpress_tsi(keys_powerbraille_40);
}
static void
buttonpress_powerbraille_80()
{
buttonpress_tsi(keys_powerbraille_80);
}
#endif /* HAVE_BRAILLE */
|
