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/*
* BRLTTY - A background process providing access to the console screen (when in
* text mode) for a blind person using a refreshable braille display.
*
* Copyright (C) 1995-2014 by The BRLTTY Developers.
*
* BRLTTY comes with ABSOLUTELY NO WARRANTY.
*
* This is free software, placed 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. Please see the file LICENSE-GPL for details.
*
* Web Page: http://mielke.cc/brltty/
*
* This software is maintained by Dave Mielke <dave@mielke.cc>.
*/
#include "prologue.h"
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/stat.h>
#include "log.h"
#include "parameters.h"
#include "program.h"
#include "file.h"
#include "parse.h"
#include "prefs.h"
#include "charset.h"
#include "spk.h"
#include "spk_thread.h"
#include "brltty.h"
void
constructSpeechSynthesizer (volatile SpeechSynthesizer *spk) {
spk->canAutospeak = 1;
spk->track.isActive = 0;
spk->track.screenNumber = SPK_SCR_NONE;
spk->track.firstLine = 0;
spk->track.speechLocation = SPK_LOC_NONE;
spk->setVolume = NULL;
spk->setRate = NULL;
spk->setPitch = NULL;
spk->setPunctuation = NULL;
spk->driver.thread = NULL;
spk->driver.data = NULL;
}
void
destructSpeechSynthesizer (volatile SpeechSynthesizer *spk) {
}
static volatile SpeechDriverThread *speechDriverThread = NULL;
int
startSpeechDriverThread (char **parameters) {
if (!speechDriverThread) {
if (!(speechDriverThread = newSpeechDriverThread(&spk, parameters))) {
return 0;
}
}
return 1;
}
void
stopSpeechDriverThread (void) {
if (speechDriverThread) {
volatile SpeechDriverThread *sdt = speechDriverThread;
speechDriverThread = NULL;
destroySpeechDriverThread(sdt);
}
}
void
setSpeechFinished (void) {
spk.track.isActive = 0;
spk.track.speechLocation = SPK_LOC_NONE;
endAutospeakDelay();
}
void
setSpeechLocation (int location) {
if (spk.track.isActive) {
if (scr.number == spk.track.screenNumber) {
if (location != spk.track.speechLocation) {
spk.track.speechLocation = location;
if (ses->trackCursor) trackSpeech();
}
return;
}
setSpeechFinished();
}
}
int
muteSpeech (const char *reason) {
int result;
logMessage(LOG_CATEGORY(SPEECH_EVENTS), "mute: %s", reason);
result = speechRequest_muteSpeech(speechDriverThread);
setSpeechFinished();
return result;
}
int
sayUtf8Characters (
const char *text, const unsigned char *attributes,
size_t length, size_t count,
SayOptions options
) {
if (count) {
logMessage(LOG_CATEGORY(SPEECH_EVENTS), "say: %s", text);
if (!speechRequest_sayText(speechDriverThread, text, length, count, attributes, options)) return 0;
}
return 1;
}
int
sayWideCharacters (
const wchar_t *characters, const unsigned char *attributes,
size_t count, SayOptions options
) {
int ok = 0;
size_t length;
void *text = makeUtf8FromWchars(characters, count, &length);
if (text) {
if (sayUtf8Characters(text, attributes, length, count, options)) ok = 1;
free(text);
} else {
logMallocError();
}
return ok;
}
void
sayString (const char *string, SayOptions options) {
sayUtf8Characters(string, NULL, strlen(string), getTextLength(string), options);
}
static void
sayStringSetting (const char *name, const char *string) {
char statement[0X40];
snprintf(statement, sizeof(statement), "%s %s", name, string);
sayString(statement, SAY_OPT_MUTE_FIRST);
}
static void
sayIntegerSetting (const char *name, int integer) {
char string[0X10];
snprintf(string, sizeof(string), "%d", integer);
sayStringSetting(name, string);
}
int
canSetSpeechVolume (void) {
return spk.setVolume != NULL;
}
int
setSpeechVolume (int setting, int say) {
if (!canSetSpeechVolume()) return 0;
logMessage(LOG_CATEGORY(SPEECH_EVENTS), "set volume: %d", setting);
speechRequest_setVolume(speechDriverThread, setting);
if (say) sayIntegerSetting(gettext("volume"), setting);
return 1;
}
int
canSetSpeechRate (void) {
return spk.setRate != NULL;
}
int
setSpeechRate (int setting, int say) {
if (!canSetSpeechRate()) return 0;
logMessage(LOG_CATEGORY(SPEECH_EVENTS), "set rate: %d", setting);
speechRequest_setRate(speechDriverThread, setting);
if (say) sayIntegerSetting(gettext("rate"), setting);
return 1;
}
int
canSetSpeechPitch (void) {
return spk.setPitch != NULL;
}
int
setSpeechPitch (int setting, int say) {
if (!canSetSpeechPitch()) return 0;
logMessage(LOG_CATEGORY(SPEECH_EVENTS), "set pitch: %d", setting);
speechRequest_setPitch(speechDriverThread, setting);
if (say) sayIntegerSetting(gettext("pitch"), setting);
return 1;
}
int
canSetSpeechPunctuation (void) {
return spk.setPunctuation != NULL;
}
int
setSpeechPunctuation (SpeechPunctuation setting, int say) {
if (!canSetSpeechPunctuation()) return 0;
logMessage(LOG_CATEGORY(SPEECH_EVENTS), "set punctuation: %d", setting);
speechRequest_setPunctuation(speechDriverThread, setting);
return 1;
}
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