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240 lines
7.0 KiB
240 lines
7.0 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* originally written by: Kirk Reiser <[email protected]> |
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* this version considerably modified by David Borowski, [email protected] |
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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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* 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/jiffies.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 "spk_priv.h" |
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#include "speakup.h" |
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#define DRV_VERSION "2.14" |
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#define SYNTH_CLEAR 0x03 |
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#define PROCSPEECH 0x0b |
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static volatile unsigned char last_char; |
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static void read_buff_add(u_char ch) |
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{ |
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last_char = ch; |
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} |
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static inline bool synth_full(void) |
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{ |
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return last_char == 0x13; |
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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 int in_escape; |
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static struct var_t vars[] = { |
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{ CAPS_START, .u.s = {"[:dv ap 222]" } }, |
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{ CAPS_STOP, .u.s = {"[:dv ap 100]" } }, |
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{ RATE, .u.n = {"[:ra %d]", 7, 0, 9, 150, 25, NULL } }, |
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{ PITCH, .u.n = {"[:dv ap %d]", 100, 0, 100, 0, 0, NULL } }, |
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{ INFLECTION, .u.n = {"[:dv pr %d] ", 100, 0, 10000, 0, 0, NULL } }, |
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{ VOL, .u.n = {"[:dv gv %d]", 13, 0, 16, 0, 5, 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/decext. |
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*/ |
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static struct kobj_attribute caps_start_attribute = |
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__ATTR(caps_start, 0644, spk_var_show, spk_var_store); |
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static struct kobj_attribute caps_stop_attribute = |
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__ATTR(caps_stop, 0644, spk_var_show, spk_var_store); |
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static struct kobj_attribute pitch_attribute = |
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__ATTR(pitch, 0644, spk_var_show, spk_var_store); |
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static struct kobj_attribute inflection_attribute = |
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__ATTR(inflection, 0644, spk_var_show, spk_var_store); |
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static struct kobj_attribute punct_attribute = |
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__ATTR(punct, 0644, spk_var_show, spk_var_store); |
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static struct kobj_attribute rate_attribute = |
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__ATTR(rate, 0644, spk_var_show, spk_var_store); |
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static struct kobj_attribute voice_attribute = |
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__ATTR(voice, 0644, spk_var_show, spk_var_store); |
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static struct kobj_attribute vol_attribute = |
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__ATTR(vol, 0644, spk_var_show, spk_var_store); |
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static struct kobj_attribute delay_time_attribute = |
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__ATTR(delay_time, 0644, spk_var_show, spk_var_store); |
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static struct kobj_attribute direct_attribute = |
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__ATTR(direct, 0644, spk_var_show, spk_var_store); |
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static struct kobj_attribute full_time_attribute = |
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__ATTR(full_time, 0644, spk_var_show, spk_var_store); |
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static struct kobj_attribute jiffy_delta_attribute = |
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__ATTR(jiffy_delta, 0644, spk_var_show, spk_var_store); |
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static struct kobj_attribute trigger_time_attribute = |
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__ATTR(trigger_time, 0644, 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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&inflection_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 struct spk_synth synth_decext = { |
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.name = "decext", |
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.version = DRV_VERSION, |
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.long_name = "Dectalk External", |
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.init = "[:pe -380]", |
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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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.flags = SF_DEC, |
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.dev_name = SYNTH_DEFAULT_DEV, |
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.startup = SYNTH_START, |
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.checkval = SYNTH_CHECK, |
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.vars = vars, |
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.io_ops = &spk_ttyio_ops, |
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.probe = spk_ttyio_synth_probe, |
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.release = spk_ttyio_release, |
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.synth_immediate = spk_ttyio_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 = NULL, |
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.indexing = { |
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.command = NULL, |
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.lowindex = 0, |
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.highindex = 0, |
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.currindex = 0, |
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}, |
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.attributes = { |
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.attrs = synth_attrs, |
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.name = "decext", |
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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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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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struct var_t *jiffy_delta; |
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struct var_t *delay_time; |
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int jiffy_delta_val = 0; |
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int delay_time_val = 0; |
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jiffy_delta = spk_get_var(JIFFY); |
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delay_time = spk_get_var(DELAY); |
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spin_lock_irqsave(&speakup_info.spinlock, flags); |
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jiffy_delta_val = jiffy_delta->u.n.value; |
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spin_unlock_irqrestore(&speakup_info.spinlock, flags); |
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jiff_max = jiffies + jiffy_delta_val; |
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while (!kthread_should_stop()) { |
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spin_lock_irqsave(&speakup_info.spinlock, flags); |
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if (speakup_info.flushing) { |
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speakup_info.flushing = 0; |
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spin_unlock_irqrestore(&speakup_info.spinlock, flags); |
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synth->flush(synth); |
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continue; |
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} |
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synth_buffer_skip_nonlatin1(); |
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if (synth_buffer_empty()) { |
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spin_unlock_irqrestore(&speakup_info.spinlock, 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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spin_unlock_irqrestore(&speakup_info.spinlock, flags); |
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if (ch == '\n') |
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ch = 0x0D; |
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if (synth_full() || !synth->io_ops->synth_out(synth, 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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spin_lock_irqsave(&speakup_info.spinlock, flags); |
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synth_buffer_getc(); |
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spin_unlock_irqrestore(&speakup_info.spinlock, 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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synth->io_ops->synth_out(synth, PROCSPEECH); |
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if (time_after_eq(jiffies, jiff_max)) { |
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if (!in_escape) |
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synth->io_ops->synth_out(synth, |
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PROCSPEECH); |
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spin_lock_irqsave(&speakup_info.spinlock, |
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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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spin_unlock_irqrestore(&speakup_info.spinlock, |
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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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synth->io_ops->synth_out(synth, 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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in_escape = 0; |
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synth->io_ops->flush_buffer(synth); |
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synth->synth_immediate(synth, "\033P;10z\033\\"); |
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} |
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module_param_named(ser, synth_decext.ser, int, 0444); |
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module_param_named(dev, synth_decext.dev_name, charp, 0444); |
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module_param_named(start, synth_decext.startup, short, 0444); |
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MODULE_PARM_DESC(ser, "Set the serial port for the synthesizer (0-based)."); |
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MODULE_PARM_DESC(dev, "Set the device e.g. ttyUSB0, for the synthesizer."); |
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MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded."); |
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module_spk_synth(synth_decext); |
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MODULE_AUTHOR("Kirk Reiser <[email protected]>"); |
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MODULE_AUTHOR("David Borowski"); |
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MODULE_DESCRIPTION("Speakup support for DECtalk External synthesizers"); |
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MODULE_LICENSE("GPL"); |
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MODULE_VERSION(DRV_VERSION); |
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