71 lines
1.9 KiB
Lua
71 lines
1.9 KiB
Lua
-- WirePlumber
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--
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-- Copyright © 2024 Collabora Ltd.
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--
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-- SPDX-License-Identifier: MIT
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--
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-- Select the media role target
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cutils = require("common-utils")
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lutils = require("linking-utils")
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log = Log.open_topic("s-linking")
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SimpleEventHook {
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name = "linking/find-media-role-target",
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after = { "linking/find-defined-target",
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"linking/find-filter-target" },
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before = "linking/prepare-link",
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interests = {
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EventInterest {
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Constraint { "event.type", "=", "select-target" },
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},
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},
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execute = function (event)
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local _, om, si, si_props, _, target =
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lutils:unwrap_select_target_event (event)
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local target_direction = cutils.getTargetDirection (si_props)
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local media_role = si_props["media.role"]
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-- bypass the hook if the target is already picked up or if the role is not
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-- defined
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if target or media_role == nil then
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return
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end
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log:info (si, string.format ("handling item %d: %s (%s) role (%s)", si.id,
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tostring (si_props ["node.name"]), tostring (si_props ["node.id"]), media_role))
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for si_target in om:iterate {
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type = "SiLinkable",
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Constraint { "item.node.direction", "=", target_direction },
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Constraint { "device.intended-roles", "+" },
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Constraint { "media.type", "=", si_props["media.type"] },
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} do
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local roles_json = si_target.properties["device.intended-roles"]
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local roles_table = Json.Raw(roles_json):parse()
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for _, target_role in ipairs(roles_table) do
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if target_role == media_role then
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target = si_target
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break
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end
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end
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if target then
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break
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end
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end
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-- set target
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if target ~= nil then
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log:info(si,
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string.format("... media role target picked: %s (%s)",
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tostring(target.properties["node.name"]),
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tostring(target.properties["node.id"])))
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event:set_data("target", target)
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end
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end
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}:register()
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