1 files changed, 136 insertions, 0 deletions
diff --git a/Adding_TTS_gtk3/speech.py b/Adding_TTS_gtk3/speech.py
new file mode 100644
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+++ b/Adding_TTS_gtk3/speech.py
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+# speech.py
+
+# Copyright (C) 2010 Aleksey Lim and James D. Simmons
+#
+# 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 gst
+
+voice = 'default'
+pitch = 0
+
+rate = -20
+highlight_cb = None
+
+def _create_pipe():
+    pipeline = 'espeak name=source ! autoaudiosink'
+    pipe = gst.parse_launch(pipeline)
+
+    def stop_cb(bus, message):
+        pipe.set_state(gst.STATE_NULL)
+
+    def mark_cb(bus, message):
+        if message.structure.get_name() == 'espeak-mark':
+            mark = message.structure['mark']
+            highlight_cb(int(mark))
+
+    bus = pipe.get_bus()
+    bus.add_signal_watch()
+    bus.connect('message::eos', stop_cb)
+    bus.connect('message::error', stop_cb)
+    bus.connect('message::element', mark_cb)
+
+    return (pipe.get_by_name('source'), pipe)
+
+def _speech(source, pipe, words):
+    source.props.pitch = pitch
+    source.props.rate = rate
+    source.props.voice = voice
+    source.props.text = words;
+    pipe.set_state(gst.STATE_PLAYING)
+
+info_source, info_pipe = _create_pipe()
+play_source, play_pipe = _create_pipe()
+
+# track for marks
+play_source.props.track = 2
+
+def voices():
+    return info_source.props.voices
+
+def say(words):
+    _speech(info_source, info_pipe, words)
+    print words
+
+def play(words):
+    _speech(play_source, play_pipe, words)
+
+def is_stopped():
+    for i in play_pipe.get_state():
+        if isinstance(i, gst.State) and i == gst.STATE_NULL:
+             return True
+    return False
+
+def stop():
+    play_pipe.set_state(gst.STATE_NULL)
+
+def is_paused():
+    for i in play_pipe.get_state():
+        if isinstance(i, gst.State) and i == gst.STATE_PAUSED:
+             return True
+    return False
+
+def pause():
+    play_pipe.set_state(gst.STATE_PAUSED)
+
+def rate_up():
+    global rate
+    rate = min(99, rate + 10)
+
+def rate_down():
+    global rate
+    rate = max(-99, rate - 10)
+
+def pitch_up():
+    global pitch
+    pitch = min(99, pitch + 10)
+
+def pitch_down():
+    global pitch
+    pitch = max(-99, pitch - 10)
+
+def prepare_highlighting(label_text):
+    i = 0
+    j = 0
+    word_begin = 0
+    word_end = 0
+    current_word = 0
+    word_tuples = []
+    omitted = [' ', '\n', u'\r', '_', '[', '{', ']', '}', '|', '<',\
+        '>', '*', '+', '/', '\\' ]
+    omitted_chars = set(omitted)
+    while i < len(label_text):
+        if label_text[i] not in omitted_chars:
+            word_begin = i
+            j = i
+            while j < len(label_text) and label_text[j] not in omitted_chars:
+                 j = j + 1
+                 word_end = j
+                 i = j
+            word_t = (word_begin, word_end, label_text[word_begin: word_end].strip())
+            if word_t[2] != u'\r':
+                 word_tuples.append(word_t)
+        i = i + 1
+    return word_tuples
+
+def add_word_marks(word_tuples):
+    "Adds a mark between each word of text."
+    i = 0
+    marked_up_text = '<speak> '
+    while i < len(word_tuples):
+        word_t = word_tuples[i]
+        marked_up_text = marked_up_text + '<mark name="' + str(i) + '"/>' + word_t[2]
+        i = i + 1
+    return marked_up_text + '</speak>'