1 files changed, 62 insertions, 0 deletions
diff --git a/audio.py b/audio.py
new file mode 100644
index 0000000..d9b69c7
--- /dev/null
+++ b/audio.py
@@ -0,0 +1,62 @@
+#    Copyright (C) 2006, 2007, 2008 One Laptop Per Child
+#
+#    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., 675 Mass Ave, Cambridge, MA 02139, USA.
+#
+
+import gst
+import logging
+
+_logger = logging.getLogger('memorize-activity')
+
+class Audio:
+    def __init__(self):
+        self._player = gst.element_factory_make('playbin', 'player')
+        fakesink = gst.element_factory_make('fakesink', 'my-fakesink')
+        self._player.set_property('video-sink', fakesink)
+        self._playing = None
+
+        bus = self._player.get_bus()
+        bus.add_signal_watch()
+        bus.connect('message', self._gstmessage_cb)
+
+    def play(self, filename=None):
+        if filename:
+            _logger.debug('play audio %s' % filename)
+            self._player.set_property('uri', 'file://' + filename)
+            self._player.set_state(gst.STATE_NULL)
+        elif self._playing == None:
+            return
+        else:
+            _logger.debug('continue audio')
+
+        self._player.set_state(gst.STATE_PLAYING)
+        self._playing = True
+
+    def pause(self):
+        if self._playing != None:
+            _logger.debug('pause audio')
+            self._player.set_state(gst.STATE_PAUSED)
+            self._playing = False
+
+    def stop(self):
+        self._player.set_state(gst.STATE_NULL)
+
+    def _gstmessage_cb(self, bus, message):
+        type = message.type
+
+        if type in (gst.MESSAGE_EOS, gst.MESSAGE_ERROR):
+            self._player.set_state(gst.STATE_NULL)
+            self._playing = None
+            _logger.debug('audio stoped with type %d' % type)