mirror of
https://github.com/linux-speakup/espeakup.git
synced 2026-08-09 09:19:09 +02:00
345 lines
6.6 KiB
C
345 lines
6.6 KiB
C
/*
|
|
* espeakup - interface which allows speakup to use espeak
|
|
*
|
|
* Copyright (C) 2008 William Hubbs
|
|
*
|
|
* 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 3 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <espeak/speak_lib.h>
|
|
|
|
/* program version */
|
|
const char *Version = "0.1";
|
|
|
|
/* command line options */
|
|
const char *cliOptions = "dV";
|
|
|
|
/* max buffer size */
|
|
const int maxBufferSize = 1025;
|
|
|
|
/* path to our pid file */
|
|
const char *pidPath = "/var/run/espeakup.pid";
|
|
|
|
/* multipliers and offsets */
|
|
const int frequencyMultiplier = 11;
|
|
const int pitchMultiplier = 11;
|
|
const int rateMultiplier = 32;
|
|
const int rateOffset = 80;
|
|
const int volumeMultiplier = 11;
|
|
|
|
struct synth_t {
|
|
int frequency;
|
|
int pitch;
|
|
int rate;
|
|
char voice[40];
|
|
int volume;
|
|
int len;
|
|
char *buf;
|
|
};
|
|
|
|
int debug = 0;
|
|
int softFD;
|
|
|
|
int SynthCallback(short *wav, int numsamples, espeak_EVENT *events)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static void set_frequency (struct synth_t *s)
|
|
{
|
|
espeak_SetParameter(espeakRANGE, s->frequency * frequencyMultiplier, 0);
|
|
}
|
|
|
|
static void set_pitch (struct synth_t *s)
|
|
{
|
|
espeak_SetParameter(espeakPITCH, s->pitch * pitchMultiplier, 0);
|
|
}
|
|
|
|
static void set_rate (struct synth_t *s)
|
|
{
|
|
espeak_SetParameter(espeakRATE, s->rate * rateMultiplier + rateOffset, 0);
|
|
}
|
|
|
|
static void set_voice(struct synth_t *s)
|
|
{
|
|
espeak_SetVoiceByName(s->voice);
|
|
}
|
|
|
|
static void set_volume (struct synth_t *s)
|
|
{
|
|
espeak_SetParameter(espeakVOLUME, (s->volume+1) * volumeMultiplier, 0);
|
|
}
|
|
|
|
static void stop_speech(void)
|
|
{
|
|
espeak_Cancel();
|
|
}
|
|
|
|
static void speak_text(struct synth_t *s)
|
|
{
|
|
espeak_Synth(s->buf, s->len + 1, 0, POS_CHARACTER, 0, 0, NULL, NULL);
|
|
for (s->len = 0; s->len < maxBufferSize; s->len++)
|
|
*(s->buf+s->len) = 0;
|
|
s->len = 0;
|
|
}
|
|
|
|
static int process_command(struct synth_t *s, char *buf, int start)
|
|
{
|
|
char value;
|
|
char param;
|
|
|
|
switch (buf[start]) {
|
|
case 1:
|
|
if (buf[start+1] == '+' || buf[start+1] == '-') {
|
|
value = buf[start+2]-'0';
|
|
param = buf[start+3];
|
|
if (buf[start+1] == '-')
|
|
value = -value;
|
|
switch (param) {
|
|
case 'f':
|
|
s->frequency += value;
|
|
set_frequency (s);
|
|
break;
|
|
case 'p':
|
|
s->pitch += value;
|
|
set_pitch (s);
|
|
break;
|
|
case 's':
|
|
s->rate += value;
|
|
set_rate (s);
|
|
break;
|
|
case 'v':
|
|
s->volume += value;
|
|
set_volume (s);
|
|
break;
|
|
}
|
|
return 4;
|
|
} else if (buf[start+1] >= '0' && buf[start+1] <= '9') {
|
|
value = buf[start+1]-'0';
|
|
param = buf[start+2];
|
|
switch (param) {
|
|
case 'f':
|
|
s->frequency = value;
|
|
set_frequency (s);
|
|
break;
|
|
case 'p':
|
|
s->pitch = value;
|
|
set_pitch (s);
|
|
break;
|
|
case 's':
|
|
s->rate = value;
|
|
set_rate (s);
|
|
break;
|
|
case 'v':
|
|
s->volume = value;
|
|
set_volume (s);
|
|
break;
|
|
}
|
|
}
|
|
return 3;
|
|
case 24:
|
|
stop_speech();
|
|
return 1;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static void process_data (struct synth_t *s, char *buf, size_t length)
|
|
{
|
|
int start;
|
|
int end;
|
|
char txtBuf[maxBufferSize];
|
|
size_t txtLen;
|
|
|
|
for(start = 0; start < maxBufferSize; start++)
|
|
*(txtBuf+start) = 0;
|
|
|
|
start = 0;
|
|
end = 0;
|
|
while (start < length) {
|
|
while (buf[end] >= 32 && end < length)
|
|
end++;
|
|
if (end != start) {
|
|
txtLen = end-start;
|
|
strncpy (txtBuf, buf + start, txtLen);
|
|
*(txtBuf+txtLen) = 0;
|
|
s->buf = txtBuf;
|
|
s->len = txtLen;
|
|
speak_text (s);
|
|
}
|
|
if (end < length)
|
|
start = end = end+process_command (s, buf, end);
|
|
else
|
|
start = length;
|
|
}
|
|
}
|
|
|
|
static void main_loop (struct synth_t *s)
|
|
{
|
|
fd_set set;
|
|
int i;
|
|
size_t length;
|
|
char buf[maxBufferSize];
|
|
|
|
while (1) {
|
|
FD_ZERO (&set);
|
|
FD_SET (softFD, &set);
|
|
i = select (softFD+1, &set, NULL, NULL, NULL);
|
|
if (i < 0) {
|
|
if (errno == EINTR)
|
|
continue;
|
|
printf("Select failed!\n");
|
|
break;
|
|
}
|
|
|
|
length = read (softFD, buf, maxBufferSize - 1);
|
|
if (length < 0) {
|
|
printf("Read from softsynth failed!\n");
|
|
break;
|
|
}
|
|
*(buf+length) = 0;
|
|
process_data (s, buf, length);
|
|
}
|
|
}
|
|
|
|
int espeakup_is_running(void)
|
|
{
|
|
int rc;
|
|
FILE *pidFile;
|
|
pid_t pid;
|
|
|
|
rc = 0;
|
|
pidFile = fopen(pidPath, "r");
|
|
if (pidFile) {
|
|
fscanf(pidFile, "%d", &pid);
|
|
fclose(pidFile);
|
|
if (! kill(pid, 0) || errno != ESRCH)
|
|
rc = 1;
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
int create_pid_file(void)
|
|
{
|
|
FILE *pidFile;
|
|
|
|
pidFile = fopen(pidPath, "w");
|
|
if (! pidFile)
|
|
return -1;
|
|
|
|
fprintf(pidFile, "%d\n", getpid());
|
|
fclose(pidFile);
|
|
return 0;
|
|
}
|
|
|
|
void espeakup_sighandler(int sig)
|
|
{
|
|
if (debug)
|
|
printf("Caught signal %i\n", sig);
|
|
|
|
/* shutdown espeak and close the softsynth */
|
|
espeak_Terminate();
|
|
close(softFD);
|
|
|
|
if (! debug)
|
|
unlink(pidPath);
|
|
exit(0);
|
|
}
|
|
|
|
void show_version(void)
|
|
{
|
|
printf("espeakup %s\n", Version);
|
|
printf("Copyright (C) 2008 William Hubbs\n");
|
|
printf("License GPLv3+: GNU GPL version 3 or later\n");
|
|
printf("You are free to change and redistribute this software.\n");
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
struct synth_t s = {
|
|
.frequency = 5,
|
|
.pitch = 5,
|
|
.rate = 5,
|
|
.voice = "default",
|
|
.volume = 5,
|
|
};
|
|
|
|
int opt;
|
|
|
|
while ((opt = getopt(argc, argv, cliOptions)) != -1) {
|
|
switch(opt) {
|
|
case 'd':
|
|
debug = 1;
|
|
break;
|
|
case 'V':
|
|
show_version();
|
|
exit(0);
|
|
break;
|
|
default:
|
|
printf("usage: %s [-d]\n", argv[0]);
|
|
return 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* become a daemon */
|
|
if (! debug)
|
|
daemon(0, 1);
|
|
|
|
/* make sure espeakup is not already running */
|
|
if (! debug && espeakup_is_running()) {
|
|
printf("Espeakup is already running!\n");
|
|
return 1;
|
|
}
|
|
|
|
/* write our pid file. */
|
|
if (! debug && create_pid_file() < 0) {
|
|
printf("Unable to create pid file!\n");
|
|
return 2;
|
|
}
|
|
|
|
/* open the softsynth. */
|
|
softFD = open ("/dev/softsynth", O_RDWR | O_NONBLOCK);
|
|
if (softFD < 0) {
|
|
printf("Unable to open the softsynth device.\n");
|
|
return 3;
|
|
}
|
|
|
|
/* initialize espeak */
|
|
espeak_Initialize(AUDIO_OUTPUT_PLAYBACK, 0, NULL, 0);
|
|
espeak_SetSynthCallback(SynthCallback);
|
|
|
|
/* Setup initial voice parameters */
|
|
set_voice(&s);
|
|
set_frequency (&s);
|
|
set_pitch (&s);
|
|
set_rate (&s);
|
|
set_volume(&s);
|
|
|
|
/* register signal handler */
|
|
signal(SIGINT, espeakup_sighandler);
|
|
signal(SIGTERM, espeakup_sighandler);
|
|
|
|
/* run the main loop */
|
|
main_loop (&s);
|
|
|
|
return 0;
|
|
}
|