![Samuel Thibault](/assets/img/avatar_default.png)
This prefixes all externally-visible symbols of speakup with "spk_". Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
323 lines
8.7 KiB
C
323 lines
8.7 KiB
C
/*
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* originally written by: Kirk Reiser <kirk@braille.uwo.ca>
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* this version considerably modified by David Borowski, david575@rogers.com
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*
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* Copyright (C) 1998-99 Kirk Reiser.
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* Copyright (C) 2003 David Borowski.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* specificly written as a driver for the speakup screenreview
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* s not a general device driver.
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*/
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#include <linux/unistd.h>
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#include <linux/proc_fs.h>
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#include <linux/jiffies.h>
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#include <linux/spinlock.h>
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#include <linux/sched.h>
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#include <linux/timer.h>
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#include <linux/kthread.h>
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#include "speakup.h"
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#include "spk_priv.h"
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#include "serialio.h"
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#define DRV_VERSION "2.20"
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#define SYNTH_CLEAR 0x03
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#define PROCSPEECH 0x0b
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static int xoff;
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static inline int synth_full(void)
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{
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return xoff;
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}
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static void do_catch_up(struct spk_synth *synth);
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static void synth_flush(struct spk_synth *synth);
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static void read_buff_add(u_char c);
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static unsigned char get_index(void);
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static int in_escape;
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static int is_flushing;
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static spinlock_t flush_lock;
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static DECLARE_WAIT_QUEUE_HEAD(flush);
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static struct var_t vars[] = {
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{ CAPS_START, .u.s = {"[:dv ap 160] " } },
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{ CAPS_STOP, .u.s = {"[:dv ap 100 ] " } },
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{ RATE, .u.n = {"[:ra %d] ", 180, 75, 650, 0, 0, NULL } },
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{ PITCH, .u.n = {"[:dv ap %d] ", 122, 50, 350, 0, 0, NULL } },
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{ VOL, .u.n = {"[:dv g5 %d] ", 86, 60, 86, 0, 0, NULL } },
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{ PUNCT, .u.n = {"[:pu %c] ", 0, 0, 2, 0, 0, "nsa" } },
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{ VOICE, .u.n = {"[:n%c] ", 0, 0, 9, 0, 0, "phfdburwkv" } },
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{ DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },
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V_LAST_VAR
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};
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/*
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* These attributes will appear in /sys/accessibility/speakup/dectlk.
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*/
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static struct kobj_attribute caps_start_attribute =
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__ATTR(caps_start, USER_RW, spk_var_show, spk_var_store);
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static struct kobj_attribute caps_stop_attribute =
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__ATTR(caps_stop, USER_RW, spk_var_show, spk_var_store);
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static struct kobj_attribute pitch_attribute =
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__ATTR(pitch, USER_RW, spk_var_show, spk_var_store);
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static struct kobj_attribute punct_attribute =
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__ATTR(punct, USER_RW, spk_var_show, spk_var_store);
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static struct kobj_attribute rate_attribute =
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__ATTR(rate, USER_RW, spk_var_show, spk_var_store);
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static struct kobj_attribute voice_attribute =
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__ATTR(voice, USER_RW, spk_var_show, spk_var_store);
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static struct kobj_attribute vol_attribute =
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__ATTR(vol, USER_RW, spk_var_show, spk_var_store);
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static struct kobj_attribute delay_time_attribute =
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__ATTR(delay_time, ROOT_W, spk_var_show, spk_var_store);
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static struct kobj_attribute direct_attribute =
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__ATTR(direct, USER_RW, spk_var_show, spk_var_store);
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static struct kobj_attribute full_time_attribute =
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__ATTR(full_time, ROOT_W, spk_var_show, spk_var_store);
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static struct kobj_attribute jiffy_delta_attribute =
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__ATTR(jiffy_delta, ROOT_W, spk_var_show, spk_var_store);
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static struct kobj_attribute trigger_time_attribute =
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__ATTR(trigger_time, ROOT_W, spk_var_show, spk_var_store);
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/*
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* Create a group of attributes so that we can create and destroy them all
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* at once.
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*/
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static struct attribute *synth_attrs[] = {
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&caps_start_attribute.attr,
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&caps_stop_attribute.attr,
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&pitch_attribute.attr,
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&punct_attribute.attr,
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&rate_attribute.attr,
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&voice_attribute.attr,
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&vol_attribute.attr,
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&delay_time_attribute.attr,
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&direct_attribute.attr,
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&full_time_attribute.attr,
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&jiffy_delta_attribute.attr,
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&trigger_time_attribute.attr,
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NULL, /* need to NULL terminate the list of attributes */
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};
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static int ap_defaults[] = {122, 89, 155, 110, 208, 240, 200, 106, 306};
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static int g5_defaults[] = {86, 81, 86, 84, 81, 80, 83, 83, 73};
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static struct spk_synth synth_dectlk = {
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.name = "dectlk",
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.version = DRV_VERSION,
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.long_name = "Dectalk Express",
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.init = "[:error sp :name paul :rate 180 :tsr off] ",
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.procspeech = PROCSPEECH,
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.clear = SYNTH_CLEAR,
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.delay = 500,
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.trigger = 50,
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.jiffies = 50,
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.full = 40000,
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.startup = SYNTH_START,
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.checkval = SYNTH_CHECK,
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.vars = vars,
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.default_pitch = ap_defaults,
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.default_vol = g5_defaults,
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.probe = spk_serial_synth_probe,
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.release = spk_serial_release,
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.synth_immediate = spk_synth_immediate,
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.catch_up = do_catch_up,
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.flush = synth_flush,
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.is_alive = spk_synth_is_alive_restart,
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.synth_adjust = NULL,
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.read_buff_add = read_buff_add,
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.get_index = get_index,
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.indexing = {
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.command = "[:in re %d ] ",
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.lowindex = 1,
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.highindex = 8,
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.currindex = 1,
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},
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.attributes = {
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.attrs = synth_attrs,
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.name = "dectlk",
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},
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};
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static int is_indnum(u_char *ch)
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{
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if ((*ch >= '0') && (*ch <= '9')) {
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*ch = *ch - '0';
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return 1;
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}
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return 0;
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}
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static u_char lastind;
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static unsigned char get_index(void)
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{
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u_char rv;
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rv = lastind;
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lastind = 0;
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return rv;
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}
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static void read_buff_add(u_char c)
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{
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static int ind = -1;
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if (c == 0x01) {
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unsigned long flags;
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spin_lock_irqsave(&flush_lock, flags);
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is_flushing = 0;
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wake_up_interruptible(&flush);
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spin_unlock_irqrestore(&flush_lock, flags);
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} else if (c == 0x13) {
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xoff = 1;
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} else if (c == 0x11) {
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xoff = 0;
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} else if (is_indnum(&c)) {
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if (ind == -1)
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ind = c;
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else
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ind = ind * 10 + c;
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} else if ((c > 31) && (c < 127)) {
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if (ind != -1)
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lastind = (u_char)ind;
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ind = -1;
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}
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}
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static void do_catch_up(struct spk_synth *synth)
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{
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int synth_full_val = 0;
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static u_char ch;
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static u_char last = '\0';
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unsigned long flags;
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unsigned long jiff_max;
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unsigned long timeout = msecs_to_jiffies(4000);
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DEFINE_WAIT(wait);
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struct var_t *jiffy_delta;
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struct var_t *delay_time;
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int jiffy_delta_val;
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int delay_time_val;
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jiffy_delta = spk_get_var(JIFFY);
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delay_time = spk_get_var(DELAY);
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spk_lock(flags);
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jiffy_delta_val = jiffy_delta->u.n.value;
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spk_unlock(flags);
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jiff_max = jiffies + jiffy_delta_val;
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while (!kthread_should_stop()) {
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/* if no ctl-a in 4, send data anyway */
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spin_lock_irqsave(&flush_lock, flags);
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while (is_flushing && timeout) {
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prepare_to_wait(&flush, &wait, TASK_INTERRUPTIBLE);
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spin_unlock_irqrestore(&flush_lock, flags);
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timeout = schedule_timeout(timeout);
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spin_lock_irqsave(&flush_lock, flags);
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}
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finish_wait(&flush, &wait);
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is_flushing = 0;
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spin_unlock_irqrestore(&flush_lock, flags);
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spk_lock(flags);
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if (speakup_info.flushing) {
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speakup_info.flushing = 0;
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spk_unlock(flags);
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synth->flush(synth);
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continue;
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}
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if (synth_buffer_empty()) {
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spk_unlock(flags);
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break;
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}
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ch = synth_buffer_peek();
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set_current_state(TASK_INTERRUPTIBLE);
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delay_time_val = delay_time->u.n.value;
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synth_full_val = synth_full();
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spk_unlock(flags);
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if (ch == '\n')
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ch = 0x0D;
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if (synth_full_val || !spk_serial_out(ch)) {
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schedule_timeout(msecs_to_jiffies(delay_time_val));
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continue;
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}
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set_current_state(TASK_RUNNING);
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spk_lock(flags);
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synth_buffer_getc();
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spk_unlock(flags);
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if (ch == '[')
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in_escape = 1;
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else if (ch == ']')
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in_escape = 0;
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else if (ch <= SPACE) {
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if (!in_escape && strchr(",.!?;:", last))
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spk_serial_out(PROCSPEECH);
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if (jiffies >= jiff_max) {
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if (!in_escape)
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spk_serial_out(PROCSPEECH);
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spk_lock(flags);
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jiffy_delta_val = jiffy_delta->u.n.value;
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delay_time_val = delay_time->u.n.value;
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spk_unlock(flags);
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schedule_timeout(msecs_to_jiffies
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(delay_time_val));
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jiff_max = jiffies + jiffy_delta_val;
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}
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}
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last = ch;
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}
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if (!in_escape)
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spk_serial_out(PROCSPEECH);
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}
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static void synth_flush(struct spk_synth *synth)
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{
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if (in_escape) {
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/* if in command output ']' so we don't get an error */
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spk_serial_out(']');
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}
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in_escape = 0;
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is_flushing = 1;
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spk_serial_out(SYNTH_CLEAR);
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}
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module_param_named(ser, synth_dectlk.ser, int, S_IRUGO);
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module_param_named(start, synth_dectlk.startup, short, S_IRUGO);
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MODULE_PARM_DESC(ser, "Set the serial port for the synthesizer (0-based).");
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MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded.");
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static int __init dectlk_init(void)
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{
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return synth_add(&synth_dectlk);
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}
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static void __exit dectlk_exit(void)
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{
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synth_remove(&synth_dectlk);
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}
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module_init(dectlk_init);
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module_exit(dectlk_exit);
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MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
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MODULE_AUTHOR("David Borowski");
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MODULE_DESCRIPTION("Speakup support for DECtalk Express synthesizers");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(DRV_VERSION);
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