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|
#!/usr/bin/wpexec
--
-- WirePlumber
--
-- Copyright © 2021 Collabora Ltd.
-- @author George Kiagiadakis <george.kiagiadakis@collabora.com>
--
-- SPDX-License-Identifier: MIT
--
-- This is an example of an interactive script
--
-- Execute with:
-- wpexec ./interactive.lua '{ option1 = "value1" , option2 = "value2" }' ...
-- or:
-- ./interactive.lua '{ option1 = "value1" , option2 = "value2" }'
-----------------------------------------------------------------------------
--
-- Collects arguments passed in from the command line
-- Assuming '{ option1 = "value1" , option2 = "value2" }' were passed,
-- this will be a table like this:
-- { ["option1"] = "value1", ["option2"] = "value2" }
--
local argv = ...
if argv then
argv = argv:parse()
print ("Command-line arguments:")
Debug.dump_table (argv)
end
--
-- Retrieve remote core info
--
local info = Core.get_info()
print ("\nPipeWire daemon info:")
for k, v in pairs(info) do
if k == "properties" then
print ("\tproperties:")
for kk, vv in pairs(v) do
print ("\t\t" .. kk .. ": " .. vv)
end
else
print ("\t" .. k .. ": " .. v)
end
end
--
-- Retrieve objects using an ObjectManager
--
-- Note: obj_mgr here cannot be a local variable; we need it to stay alive
-- after the execution has returned to the main loop
--
obj_mgr = ObjectManager {
Interest { type = "client" },
Interest { type = "device" },
Interest { type = "node" },
}
-- Listen for the 'installed' signal from the ObjectManager
-- and execute a function when it is fired
-- This function will be called from the main loop at some point later
obj_mgr:connect("installed", function (om)
--
-- Print connected clients
--
print ("\nClients:")
for obj in om:iterate { type = "client" } do
--
-- 'bound-id' and 'global-properties' are GObject
-- properties of WpProxy / WpGlobalProxy
--
local id = obj["bound-id"]
local global_props = obj["global-properties"]
print ("\t" .. id .. ": " .. global_props["application.name"]
.. " (PID: " .. global_props["pipewire.sec.pid"] .. ")")
end
--
-- Print devices
--
print ("\nDevices:")
for obj in om:iterate { type = "device" } do
local id = obj["bound-id"]
local global_props = obj["global-properties"]
print ("\t" .. id .. ": " .. global_props["device.name"]
.. " (" .. global_props["device.description"] .. ")")
end
-- Common function to print nodes
local function printNode(node)
local id = node["bound-id"]
local global_props = node["global-properties"]
-- standard lua string.match() function used here
if global_props["media.class"]:match("Stream/.*") then
print ("\t" .. id .. ": " .. global_props["application.name"])
else
print ("\t" .. id .. ": " .. global_props["object.path"]
.. " (" .. global_props["node.description"] .. ")")
end
end
--
-- Print device sinks
--
print ("\nSinks:")
--
-- Interest can have additional constraints that can be used to filter
-- the results. In this case we are only interested in nodes with their
-- "media.class" global property matching the glob expression "*/Sink"
--
local interest = Interest { type = "node",
Constraint { "media.class", "matches", "*/Sink" }
}
for obj in om:iterate(interest) do
printNode(obj)
end
--
-- Print device sources
--
print ("\nSources:")
local interest = Interest { type = "node",
Constraint { "media.class", "matches", "*/Source" }
}
for obj in om:iterate(interest) do
printNode(obj)
end
--
-- Print client streams
--
print ("\nStreams:")
local interest = Interest { type = "node",
Constraint { "media.class", "matches", "Stream/*" }
}
for obj in om:iterate(interest) do
printNode(obj)
end
-- Disconnect from pipewire and quit wireplumber
-- This only works in script interactive mode
Core.quit()
end)
-- Activate the object manager. This is required to start it,
-- otherwise it doesn't do anything
obj_mgr:activate()
|
