Move SpeechManager from sugar to sugar-toolkit-gtk3
This is done to be able to use this implementation of the feature in the activities. A complementary patch is needed in sugar module.master
Gonzalo Odiard
10 years ago
committed by
Martin Abente Lahaye
parent
952b8275a1
commit
d7c9645b60
@ -0,0 +1,242 @@
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# Copyright (C) 2011 One Laptop Per Child
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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import os
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import logging
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from gi.repository import Gio
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from gi.repository import Gst
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from gi.repository import Gtk
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from gi.repository import Gdk
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from gi.repository import GObject
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from sugar3 import power
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DEFAULT_PITCH = 0
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DEFAULT_RATE = 0
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_SAVE_TIMEOUT = 500
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class SpeechManager(GObject.GObject):
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__gtype_name__ = 'SpeechManager'
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__gsignals__ = {
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'play': (GObject.SignalFlags.RUN_FIRST, None, []),
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'pause': (GObject.SignalFlags.RUN_FIRST, None, []),
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'stop': (GObject.SignalFlags.RUN_FIRST, None, [])
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}
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MIN_PITCH = -100
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MAX_PITCH = 100
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MIN_RATE = -100
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MAX_RATE = 100
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def __init__(self, **kwargs):
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GObject.GObject.__init__(self, **kwargs)
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self._player = _GstSpeechPlayer()
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self._player.connect('play', self._update_state, 'play')
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self._player.connect('stop', self._update_state, 'stop')
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self._player.connect('pause', self._update_state, 'pause')
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self._voice_name = self._player.get_default_voice()
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self._pitch = DEFAULT_PITCH
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self._rate = DEFAULT_RATE
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self._is_playing = False
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self._is_paused = False
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self._save_timeout_id = -1
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self.restore()
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def _update_state(self, player, signal):
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self._is_playing = (signal == 'play')
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self._is_paused = (signal == 'pause')
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self.emit(signal)
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def get_is_playing(self):
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return self._is_playing
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is_playing = GObject.property(type=bool, getter=get_is_playing,
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setter=None, default=False)
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def get_is_paused(self):
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return self._is_paused
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is_paused = GObject.property(type=bool, getter=get_is_paused,
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setter=None, default=False)
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def get_pitch(self):
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return self._pitch
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def get_rate(self):
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return self._rate
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def set_pitch(self, pitch):
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self._pitch = pitch
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if self._save_timeout_id != -1:
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GObject.source_remove(self._save_timeout_id)
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self._save_timeout_id = GObject.timeout_add(_SAVE_TIMEOUT, self.save)
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def set_rate(self, rate):
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self._rate = rate
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if self._save_timeout_id != -1:
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GObject.source_remove(self._save_timeout_id)
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self._save_timeout_id = GObject.timeout_add(_SAVE_TIMEOUT, self.save)
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def say_text(self, text):
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if text:
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self._player.speak(self._pitch, self._rate, self._voice_name, text)
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def say_selected_text(self):
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clipboard = Gtk.Clipboard.get(Gdk.SELECTION_PRIMARY)
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clipboard.request_text(self.__primary_selection_cb, None)
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def pause(self):
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self._player.pause_sound_device()
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def restart(self):
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self._player.restart_sound_device()
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def stop(self):
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self._player.stop_sound_device()
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def __primary_selection_cb(self, clipboard, text, user_data):
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self.say_text(text)
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def save(self):
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self._save_timeout_id = -1
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# DEPRECATED
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from gi.repository import GConf
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client = GConf.Client.get_default()
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client.set_int('/desktop/sugar/speech/pitch', self._pitch)
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client.set_int('/desktop/sugar/speech/rate', self._rate)
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settings = Gio.Settings('org.sugarlabs.speech')
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settings.set_int('pitch', self._pitch)
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settings.set_int('rate', self._rate)
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logging.debug('saving speech configuration pitch %s rate %s',
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self._pitch, self._rate)
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return False
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def restore(self):
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settings = Gio.Settings('org.sugarlabs.speech')
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self._pitch = settings.get_int('pitch')
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self._rate = settings.get_int('rate')
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logging.debug('loading speech configuration pitch %s rate %s',
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self._pitch, self._rate)
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class _GstSpeechPlayer(GObject.GObject):
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__gsignals__ = {
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'play': (GObject.SignalFlags.RUN_FIRST, None, []),
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'pause': (GObject.SignalFlags.RUN_FIRST, None, []),
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'stop': (GObject.SignalFlags.RUN_FIRST, None, [])
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}
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def __init__(self):
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GObject.GObject.__init__(self)
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self._pipeline = None
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def restart_sound_device(self):
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if self._pipeline is None:
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logging.debug('Trying to restart not initialized sound device')
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return
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power.get_power_manager().inhibit_suspend()
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self._pipeline.set_state(Gst.State.PLAYING)
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self.emit('play')
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def pause_sound_device(self):
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if self._pipeline is None:
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return
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self._pipeline.set_state(Gst.State.PAUSED)
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power.get_power_manager().restore_suspend()
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self.emit('pause')
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def stop_sound_device(self):
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if self._pipeline is None:
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return
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self._pipeline.set_state(Gst.State.NULL)
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power.get_power_manager().restore_suspend()
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self.emit('stop')
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def make_pipeline(self, command):
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if self._pipeline is not None:
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self.stop_sound_device()
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del self._pipeline
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self._pipeline = Gst.parse_launch(command)
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bus = self._pipeline.get_bus()
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bus.add_signal_watch()
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bus.connect('message', self.__pipe_message_cb)
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def __pipe_message_cb(self, bus, message):
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if message.type in (Gst.MessageType.EOS, Gst.MessageType.ERROR):
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self._pipeline.set_state(Gst.State.NULL)
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self._pipeline = None
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power.get_power_manager().restore_suspend()
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self.emit('stop')
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def speak(self, pitch, rate, voice_name, text):
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# TODO workaround for http://bugs.sugarlabs.org/ticket/1801
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if not [i for i in text if i.isalnum()]:
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return
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self.make_pipeline('espeak name=espeak ! autoaudiosink')
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src = self._pipeline.get_by_name('espeak')
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src.props.text = text
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src.props.pitch = pitch
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src.props.rate = rate
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src.props.voice = voice_name
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src.props.track = 2 # track for marks
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self.restart_sound_device()
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def get_all_voices(self):
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all_voices = {}
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for voice in Gst.ElementFactory.make('espeak', None).props.voices:
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name, language, dialect = voice
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if dialect != 'none':
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all_voices[language + '_' + dialect] = name
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else:
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all_voices[language] = name
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return all_voices
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def get_default_voice(self):
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"""Try to figure out the default voice, from the current locale ($LANG)
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Fall back to espeak's voice called Default."""
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voices = self.get_all_voices()
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locale = os.environ.get('LANG', '')
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language_location = locale.split('.', 1)[0].lower()
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language = language_location.split('_')[0]
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# if the language is es but not es_es default to es_la (latin voice)
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if language == 'es' and language_location != 'es_es':
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language_location = 'es_la'
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best = voices.get(language_location) or voices.get(language) \
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or 'default'
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logging.debug('Best voice for LANG %s seems to be %s',
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locale, best)
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return best
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