Activity Team/gst-plugins-espeak: Difference between revisions

← Older edit Newer edit →

@@ Line 145: / Line 145: @@
    pipe.set_state(gst.STATE_PLAYING)<br>
    gtk.main()
+== Simple TTS example ==
+ import gtk
+ import gst
+ import pango
+ window = gtk.Window()
+ window.connect('destroy',
+         lambda sender: gtk.main_quit())
+ workspace = gtk.VBox()
+ window.add(workspace)
+ # text widget
+ scrolled = gtk.ScrolledWindow()
+ workspace.pack_start(scrolled)
+ text = gtk.TextView()
+ scrolled.add(text)
+ buffer = text.props.buffer
+ buffer.props.text = file(__file__).read()
+ tag = buffer.create_tag()
+ tag.props.weight = pango.WEIGHT_BOLD
+ # play controls
+ toolbar = gtk.HBox()
+ workspace.pack_end(toolbar, False)
+ play = gtk.Button('Play/Resume')
+ play.connect('clicked',
+         lambda sender: pipe.set_state(gst.STATE_PLAYING))
+ toolbar.add(play)
+ pause = gtk.Button('Pause')
+ pause.connect('clicked',
+         lambda sender: pipe.set_state(gst.STATE_PAUSED))
+ toolbar.add(pause)
+ stop = gtk.Button('Stop')
+ stop.connect('clicked',
+         lambda sender: pipe.set_state(gst.STATE_NULL))
+ toolbar.add(stop)
+ # gst code
+ pipe = gst.parse_launch('espeak name=src ! autoaudiosink')
+ src = pipe.get_by_name('src')
+ src.props.text = buffer.props.text
+ src.props.track = 1 # track for words
+ def tts_cb(bus, message):
+     if message.structure.get_name() != 'espeak-word':
+         return
+     offset = message.structure['offset']
+     len = message.structure['len']
+     buffer.remove_tag(tag, buffer.get_start_iter(), buffer.get_end_iter())
+     start = buffer.get_iter_at_offset(offset)
+     end = buffer.get_iter_at_offset(offset + len)
+     buffer.apply_tag(tag, start, end)
+ bus = pipe.get_bus()
+ bus.add_signal_watch()
+ bus.connect('message::element', tts_cb)
+ # gtk start
+ window.show_all()
+ gtk.main()
 == Known issues ==