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sugar-toolkit-gtk3/src/sugar3/speech.py
Gonzalo Odiard fc4d629b50 TTS in the toolkit need initialize gstreamer - Fixes #4851 
If is not initialized, the check for the espeak plugin will fail.
This patch also check for the espeak plugin at the beginnig
avoiding check every time the function enabled() is called.
2015-05-26 12:05:09 -04:00

375 lines
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Python
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# Copyright (C) 2011 One Laptop Per Child
#
# 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 2 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, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import os
import logging
from gettext import gettext as _
from gi.repository import Gio
from gi.repository import Gtk
from gi.repository import Gdk
from gi.repository import GObject
_HAS_GST = True
try:
from gi.repository import Gst
Gst.init(None)
Gst.parse_launch('espeak')
except:
logging.error('Gst or the espeak plugin is not installed in the system.')
_HAS_GST = False
from sugar3 import power
DEFAULT_PITCH = 0
DEFAULT_RATE = 0
_SAVE_TIMEOUT = 500
# This voice names are use dto allow the translation of the voice names.
# If espeak add new voices, we need update this list.
translated_espeak_voices = {
'af': _('Afrikaans'),
'an': _('Aragonese'),
'bg': _('Bulgarian'),
'bs': _('Bosnian'),
'ca': _('Catalan'),
'cs': _('Czech'),
'cy': _('Welsh'),
'da': _('Danish'),
'de': _('German'),
'el': _('Greek'),
'en': _('Default'),
'en_gb': _('English Britain'),
'en_sc': _('English scottish'),
'en_uk-north': _('English-north'),
'en_uk-rp': _('English_rp'),
'en_uk-wmids': _('English_wmids'),
'en_us': _('English USA'),
'en_wi': _('English west indies'),
'eo': _('Esperanto'),
'es': _('Spanish'),
'es_la': _('Spanish latin american'),
'et': _('Estonian'),
'fa': _('Farsi'),
'fa_pin': _('Farsi-pinglish'),
'fi': _('Finnish'),
'fr_be': _('French belgium'),
'fr_fr': _('French'),
'ga': _('Irish-gaeilge'),
'grc': _('Greek-ancient'),
'hi': _('Hindi'),
'hr': _('Croatian'),
'hu': _('Hungarian'),
'hy': _('Armenian'),
'hy_west': _('Armenian (west)'),
'id': _('Indonesian'),
'is': _('Icelandic'),
'it': _('Italian'),
'jbo': _('Lojban'),
'ka': _('Georgian'),
'kn': _('Kannada'),
'ku': _('Kurdish'),
'la': _('Latin'),
'lt': _('Lithuanian'),
'lv': _('Latvian'),
'mk': _('Macedonian'),
'ml': _('Malayalam'),
'ms': _('Malay'),
'ne': _('Nepali'),
'nl': _('Dutch'),
'no': _('Norwegian'),
'pa': _('Punjabi'),
'pl': _('Polish'),
'pt_br': _('Portuguese (Brazil)'),
'pt_pt': _('Portuguese (Portugal)'),
'ro': _('Romanian'),
'ru': _('Russian'),
'sk': _('Slovak'),
'sq': _('Albanian'),
'sr': _('Serbian'),
'sv': _('Swedish'),
'sw': _('Swahili-test'),
'ta': _('Tamil'),
'tr': _('Turkish'),
'vi': _('Vietnam'),
'vi_hue': _('Vietnam_hue'),
'vi_sgn': _('Vietnam_sgn'),
'zh': _('Mandarin'),
'zh_yue': _('Cantonese')
}
class SpeechManager(GObject.GObject):
__gtype_name__ = 'SpeechManager'
__gsignals__ = {
'play': (GObject.SignalFlags.RUN_FIRST, None, []),
'pause': (GObject.SignalFlags.RUN_FIRST, None, []),
'stop': (GObject.SignalFlags.RUN_FIRST, None, [])
}
MIN_PITCH = -100
MAX_PITCH = 100
MIN_RATE = -100
MAX_RATE = 100
def __init__(self, **kwargs):
GObject.GObject.__init__(self, **kwargs)
self._player = None
if not self.enabled():
return
self._player = _GstSpeechPlayer()
self._player.connect('play', self._update_state, 'play')
self._player.connect('stop', self._update_state, 'stop')
self._player.connect('pause', self._update_state, 'pause')
self._default_voice_name = self._player.get_default_voice()
self._pitch = DEFAULT_PITCH
self._rate = DEFAULT_RATE
self._is_playing = False
self._is_paused = False
self._save_timeout_id = -1
self.restore()
def enabled(self):
return _HAS_GST
def _update_state(self, player, signal):
self._is_playing = (signal == 'play')
self._is_paused = (signal == 'pause')
self.emit(signal)
def get_is_playing(self):
return self._is_playing
is_playing = GObject.property(type=bool, getter=get_is_playing,
setter=None, default=False)
def get_is_paused(self):
return self._is_paused
is_paused = GObject.property(type=bool, getter=get_is_paused,
setter=None, default=False)
def get_pitch(self):
return self._pitch
def get_rate(self):
return self._rate
def set_pitch(self, pitch):
self._pitch = pitch
if self._save_timeout_id != -1:
GObject.source_remove(self._save_timeout_id)
self._save_timeout_id = GObject.timeout_add(_SAVE_TIMEOUT, self.save)
def set_rate(self, rate):
self._rate = rate
if self._save_timeout_id != -1:
GObject.source_remove(self._save_timeout_id)
self._save_timeout_id = GObject.timeout_add(_SAVE_TIMEOUT, self.save)
def say_text(self, text, pitch=None, rate=None, lang_code=None):
if pitch is None:
pitch = self._pitch
if rate is None:
rate = self._rate
if lang_code is None:
voice_name = self._default_voice_name
else:
voice_name = self._player.get_all_voices()[lang_code]
if text:
logging.debug('PLAYING "%s" lang %s', text, voice_name)
self._player.speak(pitch, rate, voice_name, text)
def say_selected_text(self):
clipboard = Gtk.Clipboard.get(Gdk.SELECTION_PRIMARY)
clipboard.request_text(self.__primary_selection_cb, None)
def pause(self):
self._player.pause_sound_device()
def restart(self):
self._player.restart_sound_device()
def stop(self):
self._player.stop_sound_device()
def __primary_selection_cb(self, clipboard, text, user_data):
self.say_text(text)
def save(self):
self._save_timeout_id = -1
# DEPRECATED
from gi.repository import GConf
client = GConf.Client.get_default()
client.set_int('/desktop/sugar/speech/pitch', self._pitch)
client.set_int('/desktop/sugar/speech/rate', self._rate)
settings = Gio.Settings('org.sugarlabs.speech')
settings.set_int('pitch', self._pitch)
settings.set_int('rate', self._rate)
logging.debug('saving speech configuration pitch %s rate %s',
self._pitch, self._rate)
return False
def restore(self):
settings = Gio.Settings('org.sugarlabs.speech')
self._pitch = settings.get_int('pitch')
self._rate = settings.get_int('rate')
logging.debug('loading speech configuration pitch %s rate %s',
self._pitch, self._rate)
def get_all_voices(self):
if self._player:
return self._player.get_all_voices()
return None
def get_all_traslated_voices(self):
if self._player:
return self._player.get_all_voices()
return None
class _GstSpeechPlayer(GObject.GObject):
__gsignals__ = {
'play': (GObject.SignalFlags.RUN_FIRST, None, []),
'pause': (GObject.SignalFlags.RUN_FIRST, None, []),
'stop': (GObject.SignalFlags.RUN_FIRST, None, [])
}
def __init__(self):
GObject.GObject.__init__(self)
self._pipeline = None
self._all_voices = None
self._all_translated_voices = None
def restart_sound_device(self):
if self._pipeline is None:
logging.debug('Trying to restart not initialized sound device')
return
power.get_power_manager().inhibit_suspend()
self._pipeline.set_state(Gst.State.PLAYING)
self.emit('play')
def pause_sound_device(self):
if self._pipeline is None:
return
self._pipeline.set_state(Gst.State.PAUSED)
power.get_power_manager().restore_suspend()
self.emit('pause')
def stop_sound_device(self):
if self._pipeline is None:
return
self._pipeline.set_state(Gst.State.NULL)
power.get_power_manager().restore_suspend()
self.emit('stop')
def make_pipeline(self, command):
if self._pipeline is not None:
self.stop_sound_device()
del self._pipeline
self._pipeline = Gst.parse_launch(command)
bus = self._pipeline.get_bus()
bus.add_signal_watch()
bus.connect('message', self.__pipe_message_cb)
def __pipe_message_cb(self, bus, message):
if message.type in (Gst.MessageType.EOS, Gst.MessageType.ERROR):
self._pipeline.set_state(Gst.State.NULL)
self._pipeline = None
power.get_power_manager().restore_suspend()
self.emit('stop')
def speak(self, pitch, rate, voice_name, text):
# TODO workaround for http://bugs.sugarlabs.org/ticket/1801
if not [i for i in text if i.isalnum()]:
return
self.make_pipeline('espeak name=espeak ! autoaudiosink')
src = self._pipeline.get_by_name('espeak')
src.props.text = text
src.props.pitch = pitch
src.props.rate = rate
src.props.voice = voice_name
src.props.track = 2 # track for marks
self.restart_sound_device()
def get_all_voices(self):
if self._all_voices is not None:
return self._all_voices
self._init_voices()
return self._all_voices
def get_all_translated_voices(self):
if self._all_translated_voices is not None:
return self._all_translated_voices
self._init_voices()
return self._all_translated_voices
def _init_voices(self):
self._all_voices = {}
self._all_translated_voices = {}
for voice in Gst.ElementFactory.make('espeak', None).props.voices:
name, language, dialect = voice
if dialect != 'none':
lang_code = language + '_' + dialect
else:
lang_code = language
self._all_voices[lang_code] = name
if lang_code in translated_espeak_voices:
self._all_translated_voices[lang_code] = \
translated_espeak_voices[lang_code]
else:
self._all_translated_voices[lang_code] = name
def get_default_voice(self):
"""Try to figure out the default voice, from the current locale ($LANG)
Fall back to espeak's voice called Default."""
voices = self.get_all_voices()
locale = os.environ.get('LANG', '')
language_location = locale.split('.', 1)[0].lower()
language = language_location.split('_')[0]
# if the language is es but not es_es default to es_la (latin voice)
if language == 'es' and language_location != 'es_es':
language_location = 'es_la'
best = voices.get(language_location) or voices.get(language) \
or 'default'
logging.debug('Best voice for LANG %s seems to be %s',
locale, best)
return best
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