gstreamer/subprojects/gst-examples/webrtc/check/validate/actions.py

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# Copyright (c) 2020, Matthew Waters <matthew@centricular.com>
#
# This program 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 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser 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 gi
gi.require_version("GstValidate", "1.0")
from gi.repository import GstValidate
from observer import Signal
from enums import Actions
import logging
l = logging.getLogger(__name__)
class ActionObserver(object):
def __init__(self):
def _action_continue(val):
return val not in [GstValidate.ActionReturn.ERROR, GstValidate.ActionReturn.ERROR_REPORTED]
def _action_accum(previous, val):
# we want to always keep any errors propagated
if val in [GstValidate.ActionReturn.ERROR, GstValidate.ActionReturn.ERROR_REPORTED]:
return val
if previous in [GstValidate.ActionReturn.ERROR, GstValidate.ActionReturn.ERROR_REPORTED]:
return previous
# we want to always prefer async returns
if previous in [GstValidate.ActionReturn.ASYNC, GstValidate.ActionReturn.INTERLACED]:
return previous
if val in [GstValidate.ActionReturn.ASYNC, GstValidate.ActionReturn.INTERLACED]:
return val
return val
self.action = Signal(_action_continue, _action_accum)
def _action(self, scenario, action):
l.debug('executing action: ' + str(action.structure))
return self.action.fire (Actions(action.structure.get_name()), action)
def register_action_types(observer):
if not isinstance(observer, ActionObserver):
raise TypeError
GstValidate.register_action_type(Actions.CREATE_OFFER.value,
"webrtc", observer._action, None,
"Instruct a create-offer to commence",
GstValidate.ActionTypeFlags.NONE)
GstValidate.register_action_type(Actions.CREATE_ANSWER.value,
"webrtc", observer._action, None,
"Create answer",
GstValidate.ActionTypeFlags.NONE)
GstValidate.register_action_type(Actions.WAIT_FOR_NEGOTIATION_STATE.value,
"webrtc", observer._action, None,
"Wait for a specific negotiation state to be reached",
GstValidate.ActionTypeFlags.NONE)
GstValidate.register_action_type(Actions.ADD_STREAM.value,
"webrtc", observer._action, None,
"Add a stream to the webrtcbin",
GstValidate.ActionTypeFlags.NONE)
GstValidate.register_action_type(Actions.ADD_DATA_CHANNEL.value,
"webrtc", observer._action, None,
"Add a data channel to the webrtcbin",
GstValidate.ActionTypeFlags.NONE)
GstValidate.register_action_type(Actions.SEND_DATA_CHANNEL_STRING.value,
"webrtc", observer._action, None,
"Send a message using a data channel",
GstValidate.ActionTypeFlags.NONE)
GstValidate.register_action_type(Actions.WAIT_FOR_DATA_CHANNEL_STATE.value,
"webrtc", observer._action, None,
"Wait for data channel to reach state",
GstValidate.ActionTypeFlags.NONE)
GstValidate.register_action_type(Actions.CLOSE_DATA_CHANNEL.value,
"webrtc", observer._action, None,
"Close a data channel",
GstValidate.ActionTypeFlags.NONE)
GstValidate.register_action_type(Actions.WAIT_FOR_DATA_CHANNEL.value,
"webrtc", observer._action, None,
"Wait for a data channel to appear",
GstValidate.ActionTypeFlags.NONE)
GstValidate.register_action_type(Actions.WAIT_FOR_DATA_CHANNEL_STRING.value,
"webrtc", observer._action, None,
"Wait for a data channel to receive a message",
GstValidate.ActionTypeFlags.NONE)
GstValidate.register_action_type(Actions.WAIT_FOR_NEGOTIATION_NEEDED.value,
"webrtc", observer._action, None,
"Wait for a the on-negotiation-needed signal to fire",
GstValidate.ActionTypeFlags.NONE)
GstValidate.register_action_type(Actions.SET_WEBRTC_OPTIONS.value,
"webrtc", observer._action, None,
"Set some webrtc options",
GstValidate.ActionTypeFlags.NONE)