Web   ·   Wiki   ·   Activities   ·   Blog   ·   Lists   ·   Chat   ·   Meeting   ·   Bugs   ·   Git   ·   Translate   ·   Archive   ·   People   ·   Donate
summaryrefslogtreecommitdiffstats
path: root/espeak.py
blob: 65edad13150a0a0bc79f45439871d108d9be7fd1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
# 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.handle1 = None
        self.handle2 = None
        
    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)
        
        # play
        self.restart_sound_device()
        
    def restart_sound_device(self):
        self.pipeline.set_state(Gst.State.NULL)
        self.pipeline.set_state(Gst.State.PLAYING)

    def stop_sound_device(self):
        if self.pipeline is None:
            return
        self.pipeline.set_state(Gst.State.NULL)
        self._new_buffer('')

    def make_pipeline(self, wavpath):
        if self.pipeline is not None:
            self.stop_sound_device()
            del self.pipeline

        self.pipeline = Gst.Pipeline()
        self.player = Gst.ElementFactory.make("playbin", "espeak")
        self.pipeline.add(self.player)
        self.player.set_property("uri", Gst.filename_to_uri(wavpath))
        self.pipeline.set_state(Gst.State.PLAYING)
        
        def on_buffer(element, buffer, pad):
            if self.andle1:
                GObject.source_remove(self.self.andle1)
                self.andle1 = GObject.timeout_add(100,
                    self._new_buffer, str(buffer))
            return True
        
        def gstmessage_cb(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.andle2:
                    GObject.source_remove(self.self.andle2)
                    self.andle2 = GObject.timeout_add(500,
                        self._new_buffer, str(buffer))
                        
            elif  message.type == Gst.MessageType.EOS:
                pass
            
            elif message.type == Gst.MessageType.ERROR:
                logger.debug(message.type)
                self.stop_sound_device()
                
        self._was_message = False
        bus = self.pipeline.get_bus()
        bus.add_signal_watch()
        bus.connect('message', gstmessage_cb)
        
    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