New wireplumber config

.config/wireplumber/scripts/lib/common-utils.lua

@@ -0,0 +1,94 @@
+-- WirePlumber
+
+-- Copyright © 2022 Collabora Ltd.
+--    @author Ashok Sidipotu <ashok.sidipotu@collabora.com>
+
+-- SPDX-License-Identifier: MIT
+
+-- Script is a Lua Module of common Lua utility functions
+
+local cutils = {}
+
+function cutils.parseBool (var)
+  return var and (var:lower () == "true" or var == "1")
+end
+
+function cutils.parseParam (param, id)
+  local props = param:parse ()
+  if props.pod_type == "Object" and props.object_id == id then
+    return props.properties
+  else
+    return nil
+  end
+end
+
+function cutils.mediaClassToDirection (media_class)
+  if media_class:find ("Sink") or
+      media_class:find ("Input") or
+      media_class:find ("Duplex") then
+    return "input"
+  elseif media_class:find ("Source") or media_class:find ("Output") then
+    return "output"
+  else
+    return nil
+  end
+end
+
+function cutils.getTargetDirection (properties)
+  local target_direction = nil
+
+  if properties ["item.node.direction"] == "output" or
+      (properties ["item.node.direction"] == "input" and
+          cutils.parseBool (properties ["stream.capture.sink"])) then
+    target_direction = "input"
+  else
+    target_direction = "output"
+  end
+  return target_direction
+end
+
+local default_nodes = Plugin.find ("default-nodes-api")
+
+function cutils.getDefaultNode (properties, target_direction)
+  local target_media_class =
+  properties ["media.type"] ..
+      (target_direction == "input" and "/Sink" or "/Source")
+
+  if not default_nodes then
+    default_nodes = Plugin.find ("default-nodes-api")
+  end
+
+  return default_nodes:call ("get-default-node", target_media_class)
+end
+
+cutils.source_plugin = nil
+cutils.object_managers = {}
+
+function cutils.get_object_manager (name)
+  cutils.source_plugin = cutils.source_plugin or
+      Plugin.find ("standard-event-source")
+  cutils.object_managers [name] = cutils.object_managers [name] or
+      cutils.source_plugin:call ("get-object-manager", name)
+  return cutils.object_managers [name]
+end
+
+function cutils.get_default_metadata_object ()
+  return cutils.get_object_manager ("metadata"):lookup {
+    Constraint { "metadata.name", "=", "default" },
+  }
+end
+
+function cutils.arrayContains (a, value)
+  for _, v in ipairs (a) do
+    if v == value then
+      return true
+    end
+  end
+  return false
+end
+
+function cutils.get_application_name ()
+  return Core.get_properties()["application.name"] or "WirePlumber"
+end
+
+return cutils