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/*
* GStreamer
* Copyright (C) 2005 Thomas Vander Stichele <thomas@apestaart.org>
* Copyright (C) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* Copyright (C) 2009 Aleksey S. Lim <alsroot@member.fsf.org>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Alternatively, the contents of this file may be used under the
* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
* which case the following provisions apply instead of the ones
* mentioned above:
*
* 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>
struct Espeak
{
GOutputStream *buffer;
};
static unsigned char wave_hdr[44] = {
'R','I','F','F',0x24,0xf0,0xff,0x7f,'W','A','V','E','f','m','t',' ',
0x10,0,0,0,1,0,1,0, 9,0x3d,0,0,0x12,0x7a,0,0,
2,0,0x10,0,'d','a','t','a', 0x00,0xf0,0xff,0x7f};
pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
static GOutputStream *buffer = NULL;
static gint sample_rate = 0;
static gint
read_cb(short * wav, int numsamples, espeak_EVENT * events)
{
if (wav == NULL)
return 0;
if (numsamples > 0)
g_output_stream_write(buffer, wav, numsamples*2, NULL, NULL);
return 0;
}
struct Espeak*
espeak_new()
{
static volatile gsize initialized = 0;
pthread_mutex_lock(&mutex);
if (initialized == 0)
{
++initialized;
sample_rate = espeak_Initialize(AUDIO_OUTPUT_SYNCHRONOUS, 4096, NULL, 0);
espeak_SetSynthCallback(read_cb);
}
pthread_mutex_unlock(&mutex);
if (sample_rate == EE_INTERNAL_ERROR)
return NULL;
struct Espeak *es = g_new(struct Espeak, 1);
es->buffer = g_memory_output_stream_new(NULL, 0, realloc, free);
return es;
}
gboolean
espeak_say(struct Espeak *es, const gchar *text, guint pitch, guint rate)
{
void write4bytes(GOutputStream *buffer, gint value)
{
gint i, byte;
for(i = 4; i--;)
{
byte = value & 0xff;
g_output_stream_write(buffer, &byte, 1, NULL, NULL);
value >>= 8;
}
}
g_seekable_seek((GSeekable*)es->buffer, 0, G_SEEK_SET, NULL, NULL);
g_output_stream_write(es->buffer, wave_hdr, 24, NULL, NULL);
write4bytes(es->buffer, sample_rate);
write4bytes(es->buffer, sample_rate * 2);
g_output_stream_write(es->buffer, wave_hdr+32, 12, NULL, NULL);
pthread_mutex_lock(&mutex);
buffer = es->buffer;
espeak_SetParameter(espeakPITCH, pitch, 0);
espeak_SetParameter(espeakRATE, rate, 0);
gint status = espeak_Synth(text, strlen(text), 0, POS_CHARACTER, 0,
espeakCHARS_AUTO, NULL, NULL);
buffer = NULL;
pthread_mutex_unlock(&mutex);
return status == EE_OK;
}
gpointer
espeak_hear(struct Espeak *es, goffset offset, guint *size)
{
GMemoryOutputStream *mb = (GMemoryOutputStream*)es->buffer;
gpointer out = g_memory_output_stream_get_data(mb) + offset;
*size = MIN(g_memory_output_stream_get_data_size(mb) - offset, *size);
return out;
}
void
espeak_unref(struct Espeak *es)
{
g_output_stream_close(es->buffer, NULL, NULL);
g_object_unref(es->buffer);
es->buffer = 0;
g_free(es);
}
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