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
|
/*
* BRLTTY - A background process providing access to the console screen (when in
* text mode) for a blind person using a refreshable braille display.
*
* Copyright (C) 1995-2024 by The BRLTTY Developers.
*
* BRLTTY comes with ABSOLUTELY NO WARRANTY.
*
* This is free software, placed under the terms of the
* GNU Lesser General Public License, as published by the Free Software
* Foundation; either version 2.1 of the License, or (at your option) any
* later version. Please see the file LICENSE-LGPL for details.
*
* Web Page: http://brltty.app/
*
* This software is maintained by Dave Mielke <dave@mielke.cc>.
*/
#include "prologue.h"
#include <stdio.h>
#include "log.h"
#include "embed.h"
#include "parameters.h"
#include "api_control.h"
#include "brl_input.h"
#include "brl_utils.h"
#include "brl_cmds.h"
#include "cmd_queue.h"
#include "cmd_enqueue.h"
#include "io_generic.h"
#include "core.h"
static int
processInput (void) {
int command = readBrailleCommand(&brl, getCurrentCommandContext());
if (command != EOF) {
switch (command & BRL_MSK_CMD) {
case BRL_CMD_OFFLINE:
setBrailleOffline(&brl);
return 0;
default:
break;
}
}
setBrailleOnline(&brl);
if (command == EOF) return 0;
enqueueCommand(command);
return 1;
}
static
GIO_INPUT_HANDLER(handleBrailleInput) {
int processed = 0;
{
int error = parameters->error;
if (error) {
logActionError(error, "braille input monitor");
brl.hasFailed = 1;
return 0;
}
}
suspendCommandQueue();
if (!brl.isSuspended) {
api.claimDriver();
if (processInput()) processed = 1;
api.releaseDriver();
}
#ifdef ENABLE_API
else if (api.isServerRunning()) {
switch (readBrailleCommand(&brl, KTB_CTX_DEFAULT)) {
case BRL_CMD_RESTARTBRL:
brl.hasFailed = 1;
break;
default:
processed = 1;
case EOF:
break;
}
}
#endif /* ENABLE_API */
resumeCommandQueue();
return processed;
}
static GioHandleInputObject *handleBrailleInputObject = NULL;
void
stopBrailleInput (void) {
if (handleBrailleInputObject) {
gioDestroyHandleInputObject(handleBrailleInputObject);
handleBrailleInputObject = NULL;
}
}
void
startBrailleInput (void) {
stopBrailleInput();
handleBrailleInputObject = gioNewHandleInputObject(brl.gioEndpoint, BRAILLE_DRIVER_INPUT_POLL_INTERVAL, handleBrailleInput, &brl);
}
|
