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#!/usr/bin/env python
#
# callchannel.py
# Copyright (C) 2008-2010 Collabora Ltd.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import dbus
import dbus.glib
import gobject
import sys
from glib import GError
import pygst
pygst.require("0.10")
import gst
import tpfarstream
import farstream
from util import *
import gc
from telepathy.client.channel import Channel
from telepathy.constants import (
CONNECTION_HANDLE_TYPE_NONE, CONNECTION_HANDLE_TYPE_CONTACT,
CONNECTION_STATUS_CONNECTED, CONNECTION_STATUS_DISCONNECTED,
MEDIA_STREAM_STATE_CONNECTED
)
from telepathy.interfaces import (
CHANNEL_INTERFACE, CONN_INTERFACE,
CONNECTION_INTERFACE_REQUESTS,
CONNECTION_INTERFACE_CONTACT_CAPABILITIES,
CLIENT)
from constants import *
class CallChannel:
def __init__ (self, bus, connection, object_path, properties):
self.bus = bus
self.conn = connection
self.tfchannel = None
self.obj = self.bus.get_object (self.conn.service_name, object_path)
self.obj.connect_to_signal ("CallStateChanged",
self.state_changed_cb, dbus_interface=CHANNEL_TYPE_CALL)
self.pipeline = gst.Pipeline()
self.pipeline.get_bus().add_watch(self.async_handler)
self.notifier = notifier = farstream.ElementAddedNotifier()
notifier.set_properties_from_file("element-properties")
notifier.add(self.pipeline)
tpfarstream.tf_channel_new_async (connection.service_name,
connection.object_path, object_path, self.tpfs_created)
def state_changed_cb(self, state, flags, reason, details):
print "* StateChanged:\n State: %s (%d)\n Flags: %s" % (
call_state_to_s (state), state, call_flags_to_s (flags))
print "\tReason: actor: %d reason: %d dbus_reason: '%s'" % (
reason[0], reason[1], reason[2])
print '\tDetails:'
for key, value in details.iteritems():
print "\t %s: %s" % (key, value)
else:
print '\t None'
if state == CALL_STATE_ENDED:
self.close()
def accept (self):
self.obj.Accept(dbus_interface=CHANNEL_TYPE_CALL)
def close (self):
print "Closing the channel"
# close and cleanup
self.obj.Close(dbus_interface=CHANNEL_INTERFACE)
self.pipeline.set_state (gst.STATE_NULL)
self.pipeline = None
self.tfchannel = None
self.notifier = None
def async_handler (self, bus, message):
if self.tfchannel != None:
self.tfchannel.bus_message(message)
return True
self.pipeline = gst.Pipeline()
def tpfs_created (self, source, result):
tfchannel = self.tfchannel = source.new_finish(result)
tfchannel.connect ("fs-conference-added", self.conference_added)
tfchannel.connect ("content-added", self.content_added)
def src_pad_added (self, content, handle, stream, pad, codec):
type = content.get_property ("media-type")
if type == farstream.MEDIA_TYPE_AUDIO:
sink = gst.parse_bin_from_description("audioconvert ! audioresample ! audioconvert ! autoaudiosink", True)
elif type == farstream.MEDIA_TYPE_VIDEO:
sink = gst.parse_bin_from_description("ffmpegcolorspace ! videoscale ! autovideosink", True)
self.pipeline.add(sink)
pad.link(sink.get_pad("sink"))
sink.set_state(gst.STATE_PLAYING)
def get_codec_config (self, media_type):
if media_type == farstream.MEDIA_TYPE_VIDEO:
codecs = [ farstream.Codec(farstream.CODEC_ID_ANY, "H264",
farstream.MEDIA_TYPE_VIDEO, 0) ]
if self.conn.GetProtocol() == "sip" :
codecs += [ farstream.Codec(farstream.CODEC_ID_DISABLE, "THEORA",
farstream.MEDIA_TYPE_VIDEO, 0) ]
else:
codecs += [ farstream.Codec(farstream.CODEC_ID_ANY, "THEORA",
farstream.MEDIA_TYPE_VIDEO, 0) ]
codecs += [
farstream.Codec(farstream.CODEC_ID_ANY, "H263",
farstream.MEDIA_TYPE_VIDEO, 0),
farstream.Codec(farstream.CODEC_ID_DISABLE, "DV",
farstream.MEDIA_TYPE_VIDEO, 0),
farstream.Codec(farstream.CODEC_ID_ANY, "JPEG",
farstream.MEDIA_TYPE_VIDEO, 0),
farstream.Codec(farstream.CODEC_ID_ANY, "MPV",
farstream.MEDIA_TYPE_VIDEO, 0),
]
else:
codecs = [
farstream.Codec(farstream.CODEC_ID_ANY, "SPEEX",
farstream.MEDIA_TYPE_AUDIO, 16000 ),
farstream.Codec(farstream.CODEC_ID_ANY, "SPEEX",
farstream.MEDIA_TYPE_AUDIO, 8000 )
]
return codecs
def content_added(self, channel, content):
sinkpad = content.get_property ("sink-pad")
mtype = content.get_property ("media-type")
prefs = self.get_codec_config (mtype)
if prefs != None:
try:
content.set_codec_preferences(prefs)
except GError, e:
print e.message
content.connect ("src-pad-added", self.src_pad_added)
if mtype == farstream.MEDIA_TYPE_AUDIO:
src = gst.parse_bin_from_description("audiotestsrc is-live=1 ! " \
"queue", True)
elif mtype == farstream.MEDIA_TYPE_VIDEO:
src = gst.parse_bin_from_description("videotestsrc is-live=1 ! " \
"capsfilter caps=video/x-raw-yuv,width=320,height=240", True)
self.pipeline.add(src)
src.get_pad("src").link(sinkpad)
src.set_state(gst.STATE_PLAYING)
def conference_added (self, channel, conference):
self.pipeline.add(conference)
self.pipeline.set_state(gst.STATE_PLAYING)
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