__ __ __ __ _____ _ _ _____ _ _ _
| \/ | \ \ / / | __ \ (_) | | / ____| | | | |
| \ / |_ __\ V / | |__) | __ ___ ____ _| |_ ___ | (___ | |__ ___| | |
| |\/| | '__|> < | ___/ '__| \ \ / / _` | __/ _ \ \___ \| '_ \ / _ \ | |
| | | | |_ / . \ | | | | | |\ V / (_| | || __/ ____) | | | | __/ | |
|_| |_|_(_)_/ \_\ |_| |_| |_| \_/ \__,_|\__\___| |_____/|_| |_|\___V 2.1
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-- WirePlumber
--
-- Copyright © 2021-2022 Collabora Ltd.
-- @author George Kiagiadakis <george.kiagiadakis@collabora.com>
--
-- Based on default-routes.c from pipewire-media-session
-- Copyright © 2020 Wim Taymans
--
-- SPDX-License-Identifier: MIT
--
-- find the best route for a given device_id, based on availability and priority
cutils = require ("common-utils")
devinfo = require ("device-info-cache")
log = Log.open_topic ("s-device")
SimpleEventHook {
name = "device/find-best-routes",
after = "device/find-stored-routes",
interests = {
EventInterest {
Constraint { "event.type", "=", "select-routes" },
Constraint { "profile.active-device-ids", "is-present" },
},
},
execute = function (event)
local device = event:get_subject ()
local event_properties = event:get_properties ()
local active_ids = event_properties ["profile.active-device-ids"]
local selected_routes = event:get_data ("selected-routes") or {}
local dev_info = devinfo:get_device_info (device)
assert (dev_info)
-- active IDs are exchanged in JSON format
active_ids = Json.Raw (active_ids):parse ()
for _, device_id in ipairs (active_ids) do
-- if a previous hook already selected a route for this device_id, skip it
if selected_routes [tostring (device_id)] then
goto next_device_id
end
local best_avail = nil
local best_unk = nil
for _, ri in pairs (dev_info.route_infos) do
if cutils.arrayContains (ri.devices, device_id) and
(ri.profiles == nil or cutils.arrayContains (ri.profiles, dev_info.active_profile)) then
if ri.available == "yes" or ri.available == "unknown" then
if ri.direction == "Output" and ri.available ~= ri.prev_available then
best_avail = ri
ri.save = true
break
elseif ri.available == "yes" then
if (best_avail == nil or ri.priority > best_avail.priority) then
best_avail = ri
end
elseif best_unk == nil or ri.priority > best_unk.priority then
best_unk = ri
end
end
end
end
local route = best_avail or best_unk
if route then
selected_routes [tostring (device_id)] =
Json.Object { index = route.index }:to_string ()
end
::next_device_id::
end
-- save the selected routes for the apply-routes hook
event:set_data ("selected-routes", selected_routes)
end
}:register ()