__ __ __ __ _____ _ _ _____ _ _ _
| \/ | \ \ / / | __ \ (_) | | / ____| | | | |
| \ / |_ __\ V / | |__) | __ ___ ____ _| |_ ___ | (___ | |__ ___| | |
| |\/| | '__|> < | ___/ '__| \ \ / / _` | __/ _ \ \___ \| '_ \ / _ \ | |
| | | | |_ / . \ | | | | | |\ V / (_| | || __/ ____) | | | | __/ | |
|_| |_|_(_)_/ \_\ |_| |_| |_| \_/ \__,_|\__\___| |_____/|_| |_|\___V 2.1
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-- WirePlumber
--
-- Copyright © 2021 Collabora Ltd.
-- @author Julian Bouzas <julian.bouzas@collabora.com>
--
-- SPDX-License-Identifier: MIT
cutils = require ("common-utils")
log = Log.open_topic ("s-monitors")
defaults = {}
defaults.node_properties = { -- Midi bridge node properties
["factory.name"] = "api.alsa.seq.bridge",
-- Name set for the node with ALSA MIDI ports
["node.name"] = "Midi-Bridge",
-- Set priorities so that it can be used as a fallback driver (see pipewire#3562)
["priority.session"] = "100",
["priority.driver"] = "1",
}
config = {}
config.monitoring = Core.test_feature ("monitor.alsa-midi.monitoring")
config.node_properties = Conf.get_section_as_properties (
"monitor.alsa-midi.properties", defaults.node_properties)
SND_PATH = "/dev/snd"
SEQ_NAME = "seq"
SND_SEQ_PATH = SND_PATH .. "/" .. SEQ_NAME
midi_node = nil
fm_plugin = nil
function CreateMidiNode ()
-- create the midi node
local node = Node("spa-node-factory", config.node_properties)
node:activate(Feature.Proxy.BOUND, function (n)
log:info ("activated Midi bridge")
end)
return node;
end
if GLib.access (SND_SEQ_PATH, "rw") then
midi_node = CreateMidiNode ()
elseif config.monitoring then
fm_plugin = Plugin.find("file-monitor-api")
end
-- Only monitor the MIDI device if file does not exist and plugin API is loaded
if midi_node == nil and fm_plugin ~= nil then
-- listen for changed events
fm_plugin:connect ("changed", function (o, file, old, evtype)
-- files attributes changed
if evtype == "attribute-changed" then
if file ~= SND_SEQ_PATH then
return
end
if midi_node == nil and GLib.access (SND_SEQ_PATH, "rw") then
midi_node = CreateMidiNode ()
fm_plugin:call ("remove-watch", SND_PATH)
end
end
-- directory is going to be unmounted
if evtype == "pre-unmount" then
fm_plugin:call ("remove-watch", SND_PATH)
end
end)
-- add watch
fm_plugin:call ("add-watch", SND_PATH, "m")
end