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# Copyright (C) 2009, Aleksey Lim
#
# 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 gi
gi.require_version('Gst', '1.0')
from gi.repository import Gst
from gi.repository import GObject
import subprocess
import logging
import re
logger = logging.getLogger('speak')
PITCH_MAX = 200
RATE_MAX = 200
GObject.threads_init()
Gst.init(None)
class BaseAudioGrab(GObject.GObject):
__gsignals__ = {
'new-buffer': (GObject.SIGNAL_RUN_FIRST,
None, [GObject.TYPE_PYOBJECT])}
def __init__(self):
GObject.GObject.__init__(self)
self.pipeline = None
self.handle = None
self._was_message = False
def speak(self, status, text):
# 175 is default value, min is 80
rate = 60 + int(((175 - 80) * 2) * status.rate / RATE_MAX)
wavpath = "/tmp/speak.wav"
subprocess.call(["espeak", "-w", wavpath, "-p", str(status.pitch),
"-s", str(rate), "-v", status.voice.name, text],
stdout=subprocess.PIPE)
self.stop_sound_device()
self.make_pipeline(wavpath)
def restart_sound_device(self):
try:
self.pipeline.set_state(Gst.State.NULL)
self.pipeline.set_state(Gst.State.READY)
self.pipeline.set_state(Gst.State.PLAYING)
except:
pass
def stop_sound_device(self):
if self.pipeline is None:
return
try:
self.pipeline.set_state(Gst.State.NULL)
self.pipeline.set_state(Gst.State.READY)
self._new_buffer('')
except:
pass
def make_pipeline(self, wavpath):
if self.pipeline is not None:
self.pipeline.set_state(Gst.State.NULL)
del(self.pipeline)
self.pipeline = Gst.Pipeline()
file = Gst.ElementFactory.make("filesrc", "espeak")
wavparse = Gst.ElementFactory.make("wavparse", "wavparse")
audioconvert = Gst.ElementFactory.make("audioconvert", "audioconvert")
tee = Gst.ElementFactory.make('tee', "tee")
# FIXME: alsasink no more, pulseaudio causes:
# gst_object_unref: assertion `((GObject *) object)->ref_count > 0' failed
playsink = Gst.ElementFactory.make("playsink", "playsink")
queue1 = Gst.ElementFactory.make("queue", "queue1")
fakesink = Gst.ElementFactory.make("fakesink", "fakesink")
queue2 = Gst.ElementFactory.make("queue", "queue2")
self.pipeline.add(file)
self.pipeline.add(wavparse)
self.pipeline.add(audioconvert)
self.pipeline.add(tee)
self.pipeline.add(queue1)
self.pipeline.add(playsink)
self.pipeline.add(queue2)
self.pipeline.add(fakesink)
file.link(wavparse)
wavparse.link(tee)
tee.link(queue1)
queue1.link(audioconvert)
audioconvert.link(playsink)
tee.link(queue2)
queue2.link(fakesink)
file.set_property("location", wavpath)
fakesink.connect('handoff', self.on_buffer)
self._was_message = False
bus = self.pipeline.get_bus()
bus.add_signal_watch()
bus.connect('message', self.gstmessage_cb)
self.pipeline.set_state(Gst.State.PLAYING)
def gstmessage_cb(self, bus, message):
self._was_message = True
if message.type == Gst.MessageType.WARNING:
def check_after_warnings():
if not self._was_message:
self.stop_sound_device()
return True
logger.debug(message.type)
self._was_message = False
if self.handle:
GObject.source_remove(self.handle)
self.handle = GObject.timeout_add(500,
self._new_buffer, str(buffer))
elif message.type == Gst.MessageType.EOS:
self.pipeline.set_state(Gst.State.NULL)
elif message.type == Gst.MessageType.ERROR:
err, debug = message.parse_error()
logger.debug(err)
self.stop_sound_device()
def on_buffer(self, element, buffer, pad):
# FIXME: currently not running handoff
if self.handle:
GObject.source_remove(self.handle)
self.handle = GObject.timeout_add(100,
self._new_buffer, str(buffer))
return True
def _new_buffer(self, buf):
self.emit("new-buffer", buf)
return False
def voices():
out = []
result = subprocess.Popen(["espeak", "--voices"],
stdout=subprocess.PIPE).communicate()[0]
for line in result.split('\n'):
m = re.match(r'\s*\d+\s+([\w-]+)\s+([MF])\s+([\w_-]+)\s+(.+)', line)
if not m:
continue
language, gender, name, stuff = m.groups()
if stuff.startswith('mb/'): # or \
#name in ('en-rhotic','english_rp','english_wmids'):
# these voices don't produce sound
continue
out.append((language, name))
return out
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