Update

pipewire/.config/wireplumber/scripts/monitors/v4l2/create-node.lua

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+-- WirePlumber
+--
+-- Copyright © 2023 Collabora Ltd.
+--    @author Ashok Sidipotu <ashok.sidipotu@collabora.com>
+--
+-- SPDX-License-Identifier: MIT
+
+cutils = require ("common-utils")
+mutils = require ("monitor-utils")
+
+log = Log.open_topic ("s-monitors-v4l2")
+
+config = {}
+config.rules = Conf.get_section_as_json ("monitor.v4l2.rules", Json.Array {})
+
+SimpleEventHook {
+  name = "monitor/v4l2/create-node",
+  after = "monitor/v4l2/name-node",
+  interests = {
+    EventInterest {
+      Constraint { "event.type", "=", "create-v4l2-device-node" },
+    },
+  },
+  execute = function(event)
+    local properties = event:get_data ("node-properties")
+    local parent = event:get_subject ()
+    local id = event:get_data ("node-sub-id")
+    local factory = event:get_data ("factory")
+
+    -- apply properties from rules defined in JSON .conf file
+    properties = JsonUtils.match_rules_update_properties (config.rules, properties)
+
+    if cutils.parseBool (properties ["node.disabled"]) then
+      log:notice ("V4L2 node" .. properties ["node.name"] .. " disabled")
+      return
+    end
+    -- create the node
+    local node = Node ("spa-node-factory", properties)
+    node:activate (Feature.Proxy.BOUND)
+    parent:store_managed_object (id, node)
+  end
+}:register ()