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Commit c5d28031 authored by Julian Bouzas's avatar Julian Bouzas
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src: scripts: remove unneeded policy-endpoint.lua

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......@@ -29,7 +29,4 @@ function session_item_support.enable()
-- Link nodes to each other to make media flow in the graph
load_script("policy-node.lua", session_item_support.policy)
-- Link endpoints to each other to make media flow in the graph
load_script("policy-endpoint.lua", session_item_support.policy)
end
-- WirePlumber
--
-- Copyright © 2020 Collabora Ltd.
-- @author George Kiagiadakis <george.kiagiadakis@collabora.com>
--
-- SPDX-License-Identifier: MIT
-- Receive script arguments from config.lua
local config = ...
-- ensure config.move and config.follow are not nil
config.move = config.move or false
config.follow = config.follow or false
target_class_assoc = {
["Stream/Input/Audio"] = "Audio/Source",
["Stream/Output/Audio"] = "Audio/Sink",
["Stream/Input/Video"] = "Video/Source",
["Stream/Output/Video"] = "Video/Sink",
}
reverse_direction = {
["input"] = "output",
["output"] = "input",
}
default_endpoint_key = {
["input"] = "default.session.endpoint.sink",
["output"] = "default.session.endpoint.source",
}
metadata_key_target_class_assoc = {
["default.session.endpoint.sink"] = {
["audio"] = "Stream/Output/Audio",
["video"] = "Stream/Output/Video",
},
["default.session.endpoint.source"] = {
["audio"] = "Stream/Input/Audio",
["video"] = "Stream/Input/Video",
},
}
default_endpoint_target = {
["Stream/Input/Audio"] = nil,
["Stream/Output/Audio"] = nil
}
-- Endpoint Ids not linked to its node.target prop
auto_linked_endpoints = {}
function createLink (ep, target)
local ep_id = ep['bound-id']
local target_id = target['bound-id']
local ep_is_output = (ep.direction == "output")
local props = {
['endpoint-link.output.endpoint'] = (ep_is_output and ep_id) or target_id,
['endpoint-link.output.stream'] = -1,
['endpoint-link.input.endpoint'] = (ep_is_output and target_id) or ep_id,
['endpoint-link.input.stream'] = -1,
}
ep:create_link (props)
end
function isEndpointLinkedWith (session, ep, target)
local ep_id = ep["bound_id"]
local target_id = target["bound_id"]
for link in session:iterate_links() do
local out_ep, in_ep = link:get_linked_object_ids()
if (out_ep == ep_id and in_ep == target_id) or
(out_ep == target_id and in_ep == ep_id) then
return true
end
end
return false
end
function moveEndpoint (session, ep, target)
local ep_id = ep['bound-id']
local ep_is_output = (ep.direction == "output")
local total_links = 0
local moving = false
-- return if already moved
if isEndpointLinkedWith(session, ep, target) then
return
end
-- destroy all previous links
for link in session:iterate_links() do
local out_ep, in_ep = link:get_linked_object_ids()
if (ep_is_output and out_ep == ep_id) or
(not ep_is_output and in_ep == ep_id) then
local curr_target = nil
total_links = total_links + 1
-- create new link when all previous links were destroyed
link:connect ("pw-proxy-destroyed", function (l)
total_links = total_links - 1
if total_links == 0 then
createLink (ep, target)
end
end)
link:request_destroy ()
moving = true
end
end
-- create link if never linked
if not moving then
createLink (ep, target)
end
end
function moveEndpointFromNodeId (ep_node_id, target_node_id)
for session in om_session:iterate() do
local ep = session:lookup_endpoint {
Constraint { "node.id", "=", tostring(ep_node_id), type = "pw" }
}
if ep then
local target = session:lookup_endpoint {
Constraint { "node.id", "=", tostring(target_node_id), type = "pw" }
}
if target then
moveEndpoint (session, ep, target)
break
end
end
end
end
function reevaluateAutoLinkedEndpoints (ep_media_class, target_id)
-- make sure the target Id has changed
if default_endpoint_target[ep_media_class] == target_id then
return
end
default_endpoint_target[ep_media_class] = target_id
-- move auto linked endpoints to the new target
for session in om_session:iterate() do
local target = session:lookup_endpoint {
Constraint { "bound-id", "=", target_id, type = "gobject" }
}
if target then
for ep in session:iterate_endpoints {
Constraint { "media-class", "=", ep_media_class, type = "gobject" },
} do
if auto_linked_endpoints[ep["bound-id"]] == true then
moveEndpoint (session, ep, target)
end
end
end
end
end
function findTarget (session, ep)
local target = nil
local auto_linked = false
Log.trace(session, "Searching link target for " .. ep['bound-id'] ..
" (name:'" .. ep['name'] ..
"', media_class:'" .. ep['media-class'] .. "')");
-- honor node.target, if present
if ep.properties["node.target"] then
local id = ep.properties["node.target"]
for candidate_ep in session:iterate_endpoints() do
if candidate_ep.properties["node.id"] == id or
candidate_ep["bound-id"] == id
then
target = candidate_ep
break
end
end
end
-- try to find the best target
if not target then
local metadata = om_metadata:lookup()
local direction = reverse_direction[ep['direction']]
local media_class = target_class_assoc[ep['media-class']]
local highest_prio = -1
for candidate_ep in session:iterate_endpoints() do
if candidate_ep['direction'] == direction and
candidate_ep['media-class'] == media_class
then
-- we consider auto linked any target that is not in node.target prop
auto_linked = true
-- honor default endpoint, if present
if metadata then
local key = default_endpoint_key[direction]
local value = metadata:find(session['bound-id'], key)
if candidate_ep['bound-id'] == tonumber(value) then
target = candidate_ep
Log.debug(session, "choosing default endpoint " .. target['bound-id']);
break
end
end
local prio = tonumber(candidate_ep.properties["endpoint.priority"]) or 0
if highest_prio < prio then
highest_prio = prio
target = candidate_ep
Log.debug(session, "considering endpoint " .. target['bound-id'] ..
", priority " .. prio);
end
end
end
end
return target, auto_linked
end
function handleEndpoint (session, ep)
-- No need to link if autoconnect == false
local autoconnect = ep.properties['endpoint.autoconnect']
if autoconnect ~= 'true' and autoconnect ~= '1' then
return
end
local ep_id = ep['bound-id']
-- check if this endpoint is already linked
for link in session:iterate_links() do
local out_ep, in_ep = link:get_linked_object_ids()
if out_ep == ep_id or in_ep == ep_id then
return
end
end
-- if not, find a suitable target and link
local target, auto_linked = findTarget (session, ep)
if target then
createLink (ep, target)
auto_linked_endpoints[ep_id] = auto_linked
end
end
function handleLink (link)
-- activate all inactive links
if link:get_state() == "inactive" then
link:request_state("active")
end
end
om_metadata = ObjectManager { Interest { type = "metadata" } }
om_session = ObjectManager { Interest { type = "session" } }
om_session:connect("object-added", function (om, session)
session:connect('endpoints-changed', function (session)
for ep in session:iterate_endpoints() do
handleEndpoint(session, ep)
end
end)
session:connect('links-changed', function (session)
for link in session:iterate_links() do
handleLink (link)
end
end)
end)
om_metadata:connect("object-added", function (om, metadata)
metadata:connect("changed", function (m, subject, key, t, value)
if config.move and key == "target.node" then
moveEndpointFromNodeId (subject, tonumber (value))
elseif config.follow and string.find(key, "default.session.endpoint") then
local session = om_session:lookup {
Constraint { "bound-id", "=", subject, type = "gobject" }
}
if session then
local target_class =
metadata_key_target_class_assoc[key][session.properties["session.name"]]
if target_class then
reevaluateAutoLinkedEndpoints (target_class, tonumber (value))
end
end
end
end)
end)
om_metadata:activate()
om_session:activate()
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