245 lines
7.2 KiB
C
245 lines
7.2 KiB
C
/*
|
|
* 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.
|
|
*
|
|
* 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 2 of the License, 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.
|
|
*
|
|
* 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, S_IRUGO);
|
|
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);
|
|
|