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/**
* Navit, a modular navigation system.
* Copyright (C) 2017-2017 Navit Team
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* 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, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
// style with: clang-format -style=WebKit -i *
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <glib.h>
extern "C" {
#include "item.h"
#include "attr.h"
#include "debug.h"
#include "file.h"
#include "plugin.h"
#include "speech.h"
#include "util.h"
}
#include <espeak/speak_lib.h>
#include "Qt5EspeakAudioOut.h"
#ifndef INTERNAL_ESPEAK
#define INTERNAL_ESPEAK 0
#endif
#define BUFFERLENGTH 1000
#define SAMPLE_SIZE 16
// --------------------------------------------------------------------
/* private context handle type */
struct speech_priv {
gchar* path_home;
int sample_rate;
bool espeak_ok;
bool audio_ok;
Qt5EspeakAudioOut* audio;
};
/* callback from espeak to transfer generated samples */
int qt5_espeak_SynthCallback(short* wav, int numsamples, espeak_EVENT* events) {
struct speech_priv* pr = NULL;
dbg(lvl_debug, "Callback %d samples", numsamples);
if (events != NULL)
pr = (struct speech_priv*)events->user_data;
if ((pr != NULL) && (pr->audio != NULL)) {
pr->audio->addSamples(wav, numsamples);
}
return 0;
/* 0 - continue synthesis */
/* 1 - abort synthesis */
}
/* set up espeak */
static bool qt5_espeak_init_espeak(struct speech_priv* sr, struct attr** attrs) {
struct attr* path;
/* prepare espeak library path home */
path = attr_search(attrs, attr_path);
if (path) {
sr->path_home = g_strdup(path->u.str);
} else {
#if INTERNAL_ESPEAK
sr->path_home = g_strdup_printf("%s", getenv("NAVIT_SHAREDIR"));
#else
/* since no path was given by config, we don't know the path to external
* espeak data.
* so give NULL to use default path */
sr->path_home = NULL;
#endif
}
dbg(lvl_debug, "path_home set to %s", sr->path_home);
#if INTERNAL_ESPEAK
/*internal espeak is configured to support only synchronous modes */
sr->sample_rate = espeak_Initialize(AUDIO_OUTPUT_SYNCHRONOUS, BUFFERLENGTH, sr->path_home, 0);
#else
// sr->sample_rate = espeak_Initialize(AUDIO_OUTPUT_RETRIEVAL, BUFFERLENGTH,
// sr->path_home, 0);
sr->sample_rate = espeak_Initialize(AUDIO_OUTPUT_SYNCHRONOUS, BUFFERLENGTH, sr->path_home, 0);
#endif
if (sr->sample_rate == EE_INTERNAL_ERROR) {
dbg(lvl_error, "Init failed %d", sr->sample_rate);
return 1;
}
dbg(lvl_error, "Sample rate is %d", sr->sample_rate);
espeak_SetSynthCallback(qt5_espeak_SynthCallback);
return TRUE;
}
/* set language to espeak */
static bool qt5_espeak_init_language(struct speech_priv* pr, struct attr** attrs) {
struct attr* language;
gchar* lang_str = NULL;
espeak_ERROR error;
espeak_VOICE voice_spec;
language = attr_search(attrs, attr_language);
if (language) {
lang_str = g_strdup(language->u.str);
} else {
char* lang_env = getenv("LANG");
if (lang_env != NULL) {
char* country;
lang_str = g_strdup(lang_env);
/* convert to all lower */
strtolower(lang_str, lang_env);
/* extract language code from LANG environment */
dbg(lvl_debug, "%s", lang_str);
country = strchr(lang_str, '_');
dbg(lvl_debug, "%s", country);
if (country) {
lang_str[country - lang_str] = '\0';
}
dbg(lvl_debug, "espeak lang: %s", lang_str);
}
}
/*TODO (golden water tap): expose all those values as attrs */
voice_spec.name = NULL; /* here we could select a specific voice */
voice_spec.languages = lang_str;
voice_spec.gender = 0; /* 0 auto, 1 male, 2 female */
voice_spec.age = 20;
voice_spec.variant = 0;
error = espeak_SetVoiceByProperties(&voice_spec);
if (lang_str != NULL)
g_free(lang_str);
if (error != EE_OK) {
dbg(lvl_error, "Unable to set Language");
return false;
}
return true;
}
/* init audio system */
static bool qt5_espeak_init_audio(struct speech_priv* sr, const char* category) {
try {
sr->audio = new Qt5EspeakAudioOut(sr->sample_rate, category);
} catch (void* exception) {
dbg(lvl_error, "Exception on Qt5EspeakAudioOut creation");
return false;
}
return true;
}
/* will be called to say new text.
* sr - private handle
* text - new (utf8) text
*/
static int qt5_espeak_say(struct speech_priv* sr, const char* text) {
espeak_ERROR error;
dbg(lvl_debug, "Say \"%s\"", text);
error = espeak_Synth(text, strlen(text), 0, POS_CHARACTER, 0,
espeakCHARS_UTF8, NULL, sr);
if (error != EE_OK)
dbg(lvl_error, "Unable to speak! error == %d", error);
return 0;
}
/* destructor */
static void qt5_espeak_destroy(struct speech_priv* sr) {
dbg(lvl_debug, "Enter");
if (sr->path_home != NULL)
g_free(sr->path_home);
/* destroy handle */
g_free(sr);
}
/* the plugin interface for speech */
static struct speech_methods qt5_espeak_meth = {
qt5_espeak_destroy, qt5_espeak_say,
};
/* create new instance of this.
* meth - return plugin interface
* attr - get decoded attributes from config
* parent - get parent attributes from config
*/
static struct speech_priv* qt5_espeak_new(struct speech_methods* meth, struct attr** attrs,
struct attr* parent) {
struct speech_priv* sr = NULL;
dbg(lvl_debug, "Enter");
/* allocate handle */
sr = g_new0(struct speech_priv, 1);
sr->path_home = NULL;
sr->espeak_ok = false;
sr->audio_ok = false;
sr->sample_rate = 0;
sr->audio = NULL;
/* register our methods */
*meth = qt5_espeak_meth;
/* init espeak library */
if (!(sr->espeak_ok = qt5_espeak_init_espeak(sr, attrs))) {
dbg(lvl_error, "Unable to initialize espeak library");
}
/* init espeak voice and language */
if (!(sr->espeak_ok = qt5_espeak_init_language(sr, attrs))) {
dbg(lvl_error, "Unable to initialize espeak language");
}
/* init qt5 audio using default category*/
if (!(sr->audio_ok = qt5_espeak_init_audio(sr, NULL))) {
dbg(lvl_error, "Unable to initialize audio");
}
return sr;
}
/* initialize this as plugin */
void plugin_init(void) {
dbg(lvl_debug, "Enter");
plugin_register_category_speech("qt5_espeak", qt5_espeak_new);
}
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