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