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# telepathy-butterfly - an MSN connection manager for Telepathy
#
# Copyright (C) 2009 Collabora Ltd.
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import logging
import weakref
import dbus
import telepathy
import papyon
import papyon.event
from butterfly.util.decorator import async
from butterfly.media import ButterflySessionHandler
from butterfly.channel import ButterflyChannel
from telepathy.interfaces import CHANNEL_INTERFACE, CHANNEL_INTERFACE_GROUP,\
CHANNEL_TYPE_STREAMED_MEDIA
from telepathy.constants import MEDIA_STREAM_TYPE_AUDIO, MEDIA_STREAM_TYPE_VIDEO
__all__ = ['ButterflyMediaChannel']
logger = logging.getLogger('Butterfly.MediaChannel')
class ButterflyMediaChannel(
ButterflyChannel,
telepathy.server.ChannelTypeStreamedMedia,
telepathy.server.ChannelInterfaceCallState,
telepathy.server.ChannelInterfaceGroup,
telepathy.server.ChannelInterfaceMediaSignalling,
papyon.event.CallEventInterface,
papyon.event.ContactEventInterface,
papyon.event.MediaSessionEventInterface):
def __init__(self, conn, manager, call, handle, props, object_path=None):
telepathy.server.ChannelTypeStreamedMedia.__init__(self, conn, manager, props,
object_path=object_path)
telepathy.server.ChannelInterfaceCallState.__init__(self)
telepathy.server.ChannelInterfaceGroup.__init__(self)
telepathy.server.ChannelInterfaceMediaSignalling.__init__(self)
papyon.event.CallEventInterface.__init__(self, call)
papyon.event.ContactEventInterface.__init__(self, conn.msn_client)
ButterflyChannel.__init__(self, conn, props)
self._call = call
self._handle = handle
self._implement_property_get(CHANNEL_INTERFACE_GROUP,
{'LocalPendingMembers': lambda: self.GetLocalPendingMembersWithInfo() })
self._session_handler = ButterflySessionHandler(self._conn, self, call.media_session)
flags = (telepathy.CHANNEL_GROUP_FLAG_CAN_REMOVE |
telepathy.CHANNEL_GROUP_FLAG_MESSAGE_REMOVE |
telepathy.CHANNEL_GROUP_FLAG_MESSAGE_REJECT)
self.GroupFlagsChanged(flags, 0)
self.__add_initial_participants()
types = []
initial_audio_prop = CHANNEL_TYPE_STREAMED_MEDIA + '.InitialAudio'
initial_video_prop = CHANNEL_TYPE_STREAMED_MEDIA + '.InitialVideo'
self._add_immutables({
'InitialAudio': CHANNEL_TYPE_STREAMED_MEDIA,
'InitialVideo': CHANNEL_TYPE_STREAMED_MEDIA,
})
self._initial_video = False
self._initial_audio = False
if props.get(initial_audio_prop, False):
types.append(MEDIA_STREAM_TYPE_AUDIO)
self._initial_audio = True
if props.get(initial_video_prop, False):
types.append(MEDIA_STREAM_TYPE_VIDEO)
self._initial_video = True
self._implement_property_get(CHANNEL_TYPE_STREAMED_MEDIA, {
'InitialAudio': lambda: dbus.Boolean(self._initial_audio),
'InitialVideo': lambda: dbus.Boolean(self._initial_video),
})
if types:
self.RequestStreams(handle, types)
for stream in call.media_session._streams:
self.on_stream_created(stream)
self.on_stream_added(stream)
papyon.event.MediaSessionEventInterface.__init__(self, call.media_session)
def Close(self):
logger.info("Channel closed by client")
self._call.end()
def GetSessionHandlers(self):
return [(self._session_handler, self._session_handler.subtype)]
def ListStreams(self):
logger.info("List streams")
streams = dbus.Array([], signature="a(uuuuuu)")
for handler in self._session_handler.ListStreams():
streams.append((handler.id, self._handle, handler.type,
handler.state, handler.direction, handler.pending_send))
return streams
def RequestStreams(self, handle, types):
logger.info("Request streams %r %r %r" % (handle, self._handle, types))
if self._handle.get_id() == 0:
self._handle = self._conn.handle(telepathy.HANDLE_TYPE_CONTACT, handle)
streams = dbus.Array([], signature="a(uuuuuu)")
for type in types:
handler = self._session_handler.CreateStream(type, 3)
handler.connect("state-changed", self.on_stream_state_changed)
handler.connect("error", self.on_stream_error)
streams.append((handler.id, self._handle, handler.type,
handler.state, handler.direction, handler.pending_send))
self._call.invite()
return streams
def RequestStreamDirection(self, id, direction):
logger.info("Request stream direction %r %r" % (id, direction))
# FIXME: Need to implement changing the stream direction
#self._session_handler.GetStream(id).direction = direction
def RemoveStreams(self, streams):
logger.info("Remove streams %r" % streams)
for id in streams:
self._session_handler.RemoveStream(id)
if not self._session_handler.HasStreams():
self.Close()
def GetSelfHandle(self):
return self._conn.GetSelfHandle()
def GetLocalPendingMembersWithInfo(self):
info = dbus.Array([], signature="(uuus)")
for member in self._local_pending:
info.append((member, self._handle, 0, ''))
return info
def AddMembers(self, handles, message):
logger.info("Add members %r: %s" % (handles, message))
for handle in handles:
print handle, int(self._conn.self_handle)
if handle == int(self._conn.self_handle):
if self._conn.self_handle in self._local_pending:
self._call.accept()
for handler in self._session_handler.ListStreams():
handler.send_candidates()
def RemoveMembers(self, handles, message):
logger.info("Remove members %r: %s" % (handles, message))
def RemoveMembersWithReason(self, handles, message, reason):
logger.info("Remove members %r: %s (%i)" % (handles, message, reason))
#papyon.event.call.CallEventInterface
def on_call_accepted(self):
logger.info("Call accepted")
self.on_call_answered(telepathy.MEDIA_STREAM_DIRECTION_BIDIRECTIONAL, 0)
#papyon.event.call.CallEventInterface
def on_call_rejected(self, response):
self.on_call_answered(telepathy.MEDIA_STREAM_DIRECTION_NONE, 0)
def on_call_answered(self, direction, pending_send):
for handler in self._session_handler.ListStreams():
handler.set_direction(direction, pending_send)
logger.info("Direction changed to %i, %i" % (direction,
pending_send))
self.StreamDirectionChanged(handler.id, direction, pending_send)
#papyon.event.call.CallEventInterface
def on_call_ended(self):
logger.info("Call has ended")
telepathy.server.ChannelTypeStreamedMedia.Close(self)
self.remove_from_connection()
self._session_handler.remove_from_connection()
#papyon.event.media.MediaSessionEventInterface
def on_stream_created(self, stream):
if stream.created_locally:
return # Stream handler is already existing
logger.info("Media Stream created upon peer request")
handler = self._session_handler.HandleStream(stream)
handler.connect("state-changed", self.on_stream_state_changed)
handler.connect("error", self.on_stream_error)
#papyon.event.media.MediaSessionEventInterface
def on_stream_added(self, stream):
handler = self._session_handler.NewStream(stream)
logger.info("Media Stream %i added" % handler.id)
self.StreamAdded(handler.id, self._handle, handler.type)
self.StreamDirectionChanged(handler.id, handler.direction,
handler.pending_send)
#papyon.event.media.MediaSessionEventInterface
def on_stream_removed(self, stream):
handler = self._session_handler.FindStream(stream)
logger.info("Media Stream %i removed" % handler.id)
self._session_handler.RemoveStream(handler.id)
del handler
#papyon.event.media.ContactEventInterface
def on_contact_presence_changed(self, contact):
if contact == self._call.peer and \
contact.presence == papyon.Presence.OFFLINE:
logger.info("%s is now offline, closing channel" % contact)
self.Close()
#StreamHandler event
def on_stream_error(self, handler, error, message):
self.StreamError(handler.id, error, message)
# TODO: properly remove the stream without ending the whole
# call unless it was the last stream of the session.
self._call.end()
#StreamHandler event
def on_stream_state_changed(self, handler, state):
self.StreamStateChanged(handler.id, state)
def __add_initial_participants(self):
added = []
local_pending = []
remote_pending = []
if self._call.incoming:
local_pending.append(self._conn.self_handle)
added.append(self._handle)
else:
remote_pending.append(self._handle)
added.append(self._conn.self_handle)
self.MembersChanged('', added, [], local_pending, remote_pending,
0, telepathy.CHANNEL_GROUP_CHANGE_REASON_NONE)
self._call.ring()
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