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
|
// SPDX-License-Identifier: GPL-2.0+
/*
* originally written by: Kirk Reiser <kirk@braille.uwo.ca>
* this version considerably modified by David Borowski, david575@rogers.com
*
* Copyright (C) 1998-99 Kirk Reiser.
* Copyright (C) 2003 David Borowski.
*
* specificly written as a driver for the speakup screenreview
* s not a general device driver.
*/
#include <linux/jiffies.h>
#include <linux/sched.h>
#include <linux/timer.h>
#include <linux/kthread.h>
#include "spk_priv.h"
#include "speakup.h"
#define DRV_VERSION "2.14"
#define SYNTH_CLEAR 0x03
#define PROCSPEECH 0x0b
static volatile unsigned char last_char;
static void read_buff_add(u_char ch)
{
last_char = ch;
}
static inline bool synth_full(void)
{
return last_char == 0x13;
}
static void do_catch_up(struct spk_synth *synth);
static void synth_flush(struct spk_synth *synth);
static int in_escape;
static struct var_t vars[] = {
{ CAPS_START, .u.s = {"[:dv ap 222]" } },
{ CAPS_STOP, .u.s = {"[:dv ap 100]" } },
{ RATE, .u.n = {"[:ra %d]", 7, 0, 9, 150, 25, NULL } },
{ PITCH, .u.n = {"[:dv ap %d]", 100, 0, 100, 0, 0, NULL } },
{ VOL, .u.n = {"[:dv gv %d]", 13, 0, 16, 0, 5, NULL } },
{ PUNCT, .u.n = {"[:pu %c]", 0, 0, 2, 0, 0, "nsa" } },
{ VOICE, .u.n = {"[:n%c]", 0, 0, 9, 0, 0, "phfdburwkv" } },
{ DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },
V_LAST_VAR
};
/*
* These attributes will appear in /sys/accessibility/speakup/decext.
*/
static struct kobj_attribute caps_start_attribute =
__ATTR(caps_start, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute caps_stop_attribute =
__ATTR(caps_stop, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute pitch_attribute =
__ATTR(pitch, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute punct_attribute =
__ATTR(punct, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute rate_attribute =
__ATTR(rate, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute voice_attribute =
__ATTR(voice, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute vol_attribute =
__ATTR(vol, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute delay_time_attribute =
__ATTR(delay_time, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute direct_attribute =
__ATTR(direct, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute full_time_attribute =
__ATTR(full_time, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute jiffy_delta_attribute =
__ATTR(jiffy_delta, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute trigger_time_attribute =
__ATTR(trigger_time, 0644, spk_var_show, spk_var_store);
/*
* Create a group of attributes so that we can create and destroy them all
* at once.
*/
static struct attribute *synth_attrs[] = {
&caps_start_attribute.attr,
&caps_stop_attribute.attr,
&pitch_attribute.attr,
&punct_attribute.attr,
&rate_attribute.attr,
&voice_attribute.attr,
&vol_attribute.attr,
&delay_time_attribute.attr,
&direct_attribute.attr,
&full_time_attribute.attr,
&jiffy_delta_attribute.attr,
&trigger_time_attribute.attr,
NULL, /* need to NULL terminate the list of attributes */
};
static struct spk_synth synth_decext = {
.name = "decext",
.version = DRV_VERSION,
.long_name = "Dectalk External",
.init = "[:pe -380]",
.procspeech = PROCSPEECH,
.clear = SYNTH_CLEAR,
.delay = 500,
.trigger = 50,
.jiffies = 50,
.full = 40000,
.flags = SF_DEC,
.dev_name = SYNTH_DEFAULT_DEV,
.startup = SYNTH_START,
.checkval = SYNTH_CHECK,
.vars = vars,
.io_ops = &spk_ttyio_ops,
.probe = spk_ttyio_synth_probe,
.release = spk_ttyio_release,
.synth_immediate = spk_ttyio_synth_immediate,
.catch_up = do_catch_up,
.flush = synth_flush,
.is_alive = spk_synth_is_alive_restart,
.synth_adjust = NULL,
.read_buff_add = read_buff_add,
.get_index = NULL,
.indexing = {
.command = NULL,
.lowindex = 0,
.highindex = 0,
.currindex = 0,
},
.attributes = {
.attrs = synth_attrs,
.name = "decext",
},
};
static void do_catch_up(struct spk_synth *synth)
{
u_char ch;
static u_char last = '\0';
unsigned long flags;
unsigned long jiff_max;
struct var_t *jiffy_delta;
struct var_t *delay_time;
int jiffy_delta_val = 0;
int delay_time_val = 0;
jiffy_delta = spk_get_var(JIFFY);
delay_time = spk_get_var(DELAY);
spin_lock_irqsave(&speakup_info.spinlock, flags);
jiffy_delta_val = jiffy_delta->u.n.value;
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
jiff_max = jiffies + jiffy_delta_val;
while (!kthread_should_stop()) {
spin_lock_irqsave(&speakup_info.spinlock, flags);
if (speakup_info.flushing) {
speakup_info.flushing = 0;
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
synth->flush(synth);
continue;
}
synth_buffer_skip_nonlatin1();
if (synth_buffer_empty()) {
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
break;
}
ch = synth_buffer_peek();
set_current_state(TASK_INTERRUPTIBLE);
delay_time_val = delay_time->u.n.value;
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
if (ch == '\n')
ch = 0x0D;
if (synth_full() || !synth->io_ops->synth_out(synth, ch)) {
schedule_timeout(msecs_to_jiffies(delay_time_val));
continue;
}
set_current_state(TASK_RUNNING);
spin_lock_irqsave(&speakup_info.spinlock, flags);
synth_buffer_getc();
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
if (ch == '[') {
in_escape = 1;
} else if (ch == ']') {
in_escape = 0;
} else if (ch <= SPACE) {
if (!in_escape && strchr(",.!?;:", last))
synth->io_ops->synth_out(synth, PROCSPEECH);
if (time_after_eq(jiffies, jiff_max)) {
if (!in_escape)
synth->io_ops->synth_out(synth,
PROCSPEECH);
spin_lock_irqsave(&speakup_info.spinlock,
flags);
jiffy_delta_val = jiffy_delta->u.n.value;
delay_time_val = delay_time->u.n.value;
spin_unlock_irqrestore(&speakup_info.spinlock,
flags);
schedule_timeout(msecs_to_jiffies
(delay_time_val));
jiff_max = jiffies + jiffy_delta_val;
}
}
last = ch;
}
if (!in_escape)
synth->io_ops->synth_out(synth, PROCSPEECH);
}
static void synth_flush(struct spk_synth *synth)
{
in_escape = 0;
synth->io_ops->flush_buffer();
synth->synth_immediate(synth, "\033P;10z\033\\");
}
module_param_named(ser, synth_decext.ser, int, 0444);
module_param_named(dev, synth_decext.dev_name, charp, 0444);
module_param_named(start, synth_decext.startup, short, 0444);
MODULE_PARM_DESC(ser, "Set the serial port for the synthesizer (0-based).");
MODULE_PARM_DESC(dev, "Set the device e.g. ttyUSB0, for the synthesizer.");
MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded.");
module_spk_synth(synth_decext);
MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
MODULE_AUTHOR("David Borowski");
MODULE_DESCRIPTION("Speakup support for DECtalk External synthesizers");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
|
