108 lines
3.4 KiB
Lua
108 lines
3.4 KiB
Lua
-- WirePlumber
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--
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-- Copyright © 2021-2022 Collabora Ltd.
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-- @author George Kiagiadakis <george.kiagiadakis@collabora.com>
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--
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-- Based on default-routes.c from pipewire-media-session
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-- Copyright © 2020 Wim Taymans
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--
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-- SPDX-License-Identifier: MIT
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--
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-- Set the Route param as part of the "select-routes" event run
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devinfo = require ("device-info-cache")
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log = Log.open_topic ("s-device")
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AsyncEventHook {
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name = "device/apply-routes",
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after = { "device/find-stored-routes",
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"device/find-best-routes",
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"device/apply-route-props" },
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interests = {
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EventInterest {
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Constraint { "event.type", "=", "select-routes" },
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},
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},
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steps = {
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start = {
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next = "none",
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execute = function (event, transition)
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local device = event:get_subject ()
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local selected_routes = event:get_data ("selected-routes")
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local dev_info = devinfo:get_device_info (device)
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assert (dev_info)
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if not selected_routes then
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log:info (device, "No routes selected to set on " .. dev_info.name)
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transition:advance ()
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return
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end
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for device_id, route in pairs (selected_routes) do
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-- JSON to lua table
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route = Json.Raw (route):parse ()
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-- steal the props
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local props = route.props or {}
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-- replace with the full route info
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local route_info = devinfo.find_route_info (dev_info, route)
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if not route_info then
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goto skip_route
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end
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-- ensure default values
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local is_input = (route_info.direction == "Input")
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props.mute = props.mute or false
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props.channelVolumes = props.channelVolumes or
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{ is_input and Settings.get_float ("device.routes.default-source-volume")
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or Settings.get_float ("device.routes.default-sink-volume") }
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-- prefix the props with correct IDs to create a Pod.Object
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table.insert (props, 1, "Spa:Pod:Object:Param:Props")
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table.insert (props, 2, "Route")
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-- convert arrays to Spa Pod
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if props.channelVolumes then
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table.insert (props.channelVolumes, 1, "Spa:Float")
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props.channelVolumes = Pod.Array (props.channelVolumes)
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end
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if props.channelMap then
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table.insert (props.channelMap, 1, "Spa:Enum:AudioChannel")
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props.channelMap = Pod.Array (props.channelMap)
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end
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if props.iec958Codecs then
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table.insert (props.iec958Codecs, 1, "Spa:Enum:AudioIEC958Codec")
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props.iec958Codecs = Pod.Array (props.iec958Codecs)
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end
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-- construct Route param
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local param = Pod.Object {
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"Spa:Pod:Object:Param:Route", "Route",
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index = route_info.index,
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device = device_id,
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props = Pod.Object (props),
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save = route_info.save,
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}
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log:debug (param,
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string.format ("setting route(%s) on for device(%s)(%s)",
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route_info.name, dev_info.name, tostring (device)))
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device:set_param ("Route", param)
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::skip_route::
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end
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-- FIXME: add cancellability
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-- sync on the pipewire connection to ensure that the params
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-- have been configured on the remote device object
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Core.sync (function ()
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transition:advance ()
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end)
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end
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},
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}
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}:register()
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