mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-11 11:51:34 +00:00
78 lines
3.5 KiB
Python
78 lines
3.5 KiB
Python
|
#!/usr/bin/env python3
|
||
|
|
#
|
||
|
|
# Copyright (c) 2018, 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
|
||
|
|
|
||
|
|
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.create_offer = Signal(_action_continue, _action_accum)
|
||
|
|
self.wait_for_negotiation_state = Signal(_action_continue, _action_accum)
|
||
|
|
self.add_stream = Signal(_action_continue, _action_accum)
|
||
|
|
self.wait_for_remote_state = Signal(_action_continue, _action_accum)
|
||
|
|
|
||
|
|
def _create_offer(self, scenario, action):
|
||
|
|
print("action create-offer")
|
||
|
|
return self.create_offer.fire()
|
||
|
|
def _wait_for_negotiation_state(self, scenario, action):
|
||
|
|
state = action.structure["state"]
|
||
|
|
print("action wait-for-negotiation-state", state)
|
||
|
|
return self.wait_for_negotiation_state.fire(state)
|
||
|
|
def _add_stream(self, scenario, action):
|
||
|
|
pipeline = action.structure["pipeline"]
|
||
|
|
print("action add-stream", pipeline)
|
||
|
|
return self.add_stream.fire(pipeline)
|
||
|
|
|
||
|
|
def register_action_types(observer):
|
||
|
|
if not isinstance(observer, ActionObserver):
|
||
|
|
raise TypeError
|
||
|
|
|
||
|
|
GstValidate.register_action_type("create-offer", "webrtc",
|
||
|
|
observer._create_offer, None,
|
||
|
|
"Instruct a create-offer to commence",
|
||
|
|
GstValidate.ActionTypeFlags.NONE)
|
||
|
|
GstValidate.register_action_type("wait-for-negotiation-state", "webrtc",
|
||
|
|
observer._wait_for_negotiation_state, None,
|
||
|
|
"Wait for a specific negotiation state to be reached",
|
||
|
|
GstValidate.ActionTypeFlags.NONE)
|
||
|
|
GstValidate.register_action_type("add-stream", "webrtc",
|
||
|
|
observer._add_stream, None,
|
||
|
|
"Add a stream to the webrtcbin",
|
||
|
|
GstValidate.ActionTypeFlags.NONE)
|