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/*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <pthread.h>
#include <stdlib.h>
#include <string.h>
#include <glib.h>
#include <gio/gio.h>
#include <espeak/speak_lib.h>
#include <gst/gst.h>
#include "spin.h"
#include "espeak.h"
struct _Espeak
{
Econtext *context;
guint rate;
guint pitch;
const gchar *voice;
};
static gint espeak_sample_rate = 0;
static const espeak_VOICE **espeak_voices = NULL;
static GOutputStream *espeak_buffer = NULL;
static gint
synth_cb(short * data, int numsamples, espeak_EVENT * events)
{
if (data == NULL)
return 0;
if (numsamples > 0)
g_output_stream_write(espeak_buffer, data, numsamples*2, NULL, NULL);
GST_DEBUG("numsamples=%d data_size=%ld", numsamples*2,
g_memory_output_stream_get_data_size(G_MEMORY_OUTPUT_STREAM(
espeak_buffer)));
return 0;
}
static void
synth(const gchar *text, GMemoryOutputStream *sound, gpointer self_)
{
Espeak *self = (Espeak*)self_;
espeak_SetParameter(espeakPITCH, self->pitch, 0);
espeak_SetParameter(espeakRATE, self->rate, 0);
espeak_SetVoiceByName(self->voice);
espeak_buffer = G_OUTPUT_STREAM(sound);
espeak_Synth(text, strlen(text)+1, 0, POS_WORD, 0, espeakCHARS_UTF8,
NULL, NULL);
}
static void
init()
{
static volatile gsize initialized = 0;
if (initialized == 0)
{
++initialized;
espeak_sample_rate = espeak_Initialize(AUDIO_OUTPUT_SYNCHRONOUS, 4096,
NULL, 0);
espeak_SetSynthCallback(synth_cb);
espeak_voices = espeak_ListVoices(NULL);
spin_init(synth);
}
}
Espeak*
espeak_new()
{
init();
Espeak *self = g_new0(Espeak, 1);
self->context = spin_new(self);
self->pitch = ESPEAK_DEFAULT_PITCH;
self->rate = ESPEAK_DEFAULT_RATE;
self->voice = ESPEAK_DEFAULT_VOICE;
return self;
}
void
espeak_unref(Espeak *self)
{
spin_unref(self->context);
memset(self, 0, sizeof(Espeak));
g_free(self);
}
gint
espeak_get_sample_rate()
{
return espeak_sample_rate;
}
gchar**
espeak_get_voices()
{
gsize count = 0;
const espeak_VOICE **i;
char **j, **out;
init();
for (i = espeak_voices; *i; ++i) ++count;
out = j = g_new0(gchar*, count);
for (i = espeak_voices; *i; ++i)
*j++ = g_strconcat((*i)->name, ":", (*i)->languages+1, NULL);
return out;
}
void
espeak_set_pitch(Espeak *self, guint value)
{
self->pitch = value;
}
void
espeak_set_rate(Espeak *self, guint value)
{
self->rate = value;
}
void
espeak_set_voice(Espeak *self, const gchar *value)
{
self->voice = value;
}
void
espeak_say(Espeak *self, const gchar *text)
{
spin_in(self->context, text);
}
gpointer
espeak_hear(Espeak *self, gsize size)
{
return spin_out(self->context, &size);
}
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