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Mini Shell
Mini Shell
-- WirePlumber
--
-- Copyright © 2021 Collabora Ltd.
-- @author George Kiagiadakis <george.kiagiadakis@collabora.com>
--
-- SPDX-License-Identifier: MIT
local config = ... or {}
local COMBINE_OFFSET = 64
devices_om = ObjectManager {
Interest {
type = "device",
}
}
nodes_om = ObjectManager {
Interest {
type = "node",
Constraint { "node.name", "#", "*.bluez_*put*"},
Constraint { "device.id", "+" },
}
}
-- preprocess rules and create Interest objects
for _, r in ipairs(config.rules or {}) do
r.interests = {}
for _, i in ipairs(r.matches) do
local interest_desc = { type = "properties" }
for _, c in ipairs(i) do
c.type = "pw"
table.insert(interest_desc, Constraint(c))
end
local interest = Interest(interest_desc)
table.insert(r.interests, interest)
end
r.matches = nil
end
-- applies properties from config.rules when asked to
function rulesApplyProperties(properties)
for _, r in ipairs(config.rules or {}) do
if r.apply_properties then
for _, interest in ipairs(r.interests) do
if interest:matches(properties) then
for k, v in pairs(r.apply_properties) do
properties[k] = v
end
end
end
end
end
end
function setOffloadActive(device, value)
local pod = Pod.Object {
"Spa:Pod:Object:Param:Props", "Props", bluetoothOffloadActive = value
}
device:set_params("Props", pod)
end
nodes_om:connect("object-added", function(_, node)
node:connect("state-changed", function(node, old_state, cur_state)
local interest = Interest {
type = "device",
Constraint { "object.id", "=", node.properties["device.id"]}
}
for d in devices_om:iterate (interest) do
if cur_state == "running" then
setOffloadActive(d, true)
else
setOffloadActive(d, false)
end
end
end)
end)
function createOffloadScoNode(parent, id, type, factory, properties)
local dev_props = parent.properties
local args = {
["audio.channels"] = 1,
["audio.position"] = "[MONO]",
}
local desc =
dev_props["device.description"]
or dev_props["device.name"]
or dev_props["device.nick"]
or dev_props["device.alias"]
or "bluetooth-device"
-- sanitize description, replace ':' with ' '
args["node.description"] = desc:gsub("(:)", " ")
if factory:find("sink") then
local capture_args = {
["device.id"] = parent["bound-id"],
["media.class"] = "Audio/Sink",
["node.pause-on-idle"] = false,
}
for k, v in pairs(properties) do
capture_args[k] = v
end
local name = "bluez_output" .. "." .. (properties["api.bluez5.address"] or dev_props["device.name"]) .. "." .. tostring(id)
args["node.name"] = name:gsub("([^%w_%-%.])", "_")
args["capture.props"] = Json.Object(capture_args)
args["playback.props"] = Json.Object {
["node.passive"] = true,
["node.pause-on-idle"] = false,
}
elseif factory:find("source") then
local playback_args = {
["device.id"] = parent["bound-id"],
["media.class"] = "Audio/Source",
["node.pause-on-idle"] = false,
}
for k, v in pairs(properties) do
playback_args[k] = v
end
local name = "bluez_input" .. "." .. (properties["api.bluez5.address"] or dev_props["device.name"]) .. "." .. tostring(id)
args["node.name"] = name:gsub("([^%w_%-%.])", "_")
args["capture.props"] = Json.Object {
["node.passive"] = true,
["node.pause-on-idle"] = false,
}
args["playback.props"] = Json.Object(playback_args)
else
Log.warning(parent, "Unsupported factory: " .. factory)
return
end
-- Transform 'args' to a json object here
local args_json = Json.Object(args)
-- and get the final JSON as a string from the json object
local args_string = args_json:get_data()
local loopback_properties = {}
local loopback = LocalModule("libpipewire-module-loopback", args_string, loopback_properties)
parent:store_managed_object(id, loopback)
end
device_set_nodes_om = ObjectManager {
Interest {
type = "node",
Constraint { "api.bluez5.set.leader", "+", type = "pw" },
}
}
device_set_nodes_om:connect ("object-added", function(_, node)
-- Connect ObjectConfig events to the right node
if not monitor then
return
end
local interest = Interest {
type = "device",
Constraint { "object.id", "=", node.properties["device.id"] }
}
Log.info("Device set node found: " .. tostring (node["bound-id"]))
for device in devices_om:iterate (interest) do
local device_id = device.properties["api.bluez5.id"]
if not device_id then
goto next_device
end
local spa_device = monitor:get_managed_object (tonumber (device_id))
if not spa_device then
goto next_device
end
local id = node.properties["card.profile.device"]
if id ~= nil then
Log.info(".. assign to device: " .. tostring (device["bound-id"]) .. " node " .. tostring (id))
spa_device:store_managed_object (id, node)
-- set routes again to update volumes etc.
for route in device:iterate_params ("Route") do
device:set_param ("Route", route)
end
end
::next_device::
end
end)
function createSetNode(parent, id, type, factory, properties)
local args = {}
local name
local target_class
local stream_class
local rules = {}
local members_json = Json.Raw (properties["api.bluez5.set.members"])
local channels_json = Json.Raw (properties["api.bluez5.set.channels"])
local members = members_json:parse ()
local channels = channels_json:parse ()
if properties["media.class"] == "Audio/Sink" then
name = "bluez_output"
args["combine.mode"] = "sink"
target_class = "Audio/Sink/Internal"
stream_class = "Stream/Output/Audio/Internal"
else
name = "bluez_input"
args["combine.mode"] = "source"
target_class = "Audio/Source/Internal"
stream_class = "Stream/Input/Audio/Internal"
end
Log.info("Device set: " .. properties["node.name"])
for _, member in pairs(members) do
Log.info("Device set member:" .. member["object.path"])
table.insert(rules,
Json.Object {
["matches"] = Json.Array {
Json.Object {
["object.path"] = member["object.path"],
["media.class"] = target_class,
},
},
["actions"] = Json.Object {
["create-stream"] = Json.Object {
["media.class"] = stream_class,
["audio.position"] = Json.Array (member["channels"]),
}
},
}
)
end
properties["node.virtual"] = false
properties["device.api"] = "bluez5"
properties["api.bluez5.set.members"] = nil
properties["api.bluez5.set.channels"] = nil
properties["api.bluez5.set.leader"] = true
properties["audio.position"] = Json.Array (channels)
args["combine.props"] = Json.Object (properties)
args["stream.props"] = Json.Object {}
args["stream.rules"] = Json.Array (rules)
local args_json = Json.Object(args)
local args_string = args_json:get_data()
local combine_properties = {}
Log.info("Device set node: " .. args_string)
return LocalModule("libpipewire-module-combine-stream", args_string, combine_properties)
end
function createNode(parent, id, type, factory, properties)
local dev_props = parent.properties
if config.properties["bluez5.hw-offload-sco"] and factory:find("sco") then
createOffloadScoNode(parent, id, type, factory, properties)
return
end
-- set the device id and spa factory name; REQUIRED, do not change
properties["device.id"] = parent["bound-id"]
properties["factory.name"] = factory
-- set the default pause-on-idle setting
properties["node.pause-on-idle"] = false
-- set the node description
local desc =
dev_props["device.description"]
or dev_props["device.name"]
or dev_props["device.nick"]
or dev_props["device.alias"]
or "bluetooth-device"
-- sanitize description, replace ':' with ' '
properties["node.description"] = desc:gsub("(:)", " ")
-- set the node name
local name =
((factory:find("sink") and "bluez_output") or
(factory:find("source") and "bluez_input" or factory)) .. "." ..
(properties["api.bluez5.address"] or dev_props["device.name"]) .. "." ..
tostring(id)
-- sanitize name
properties["node.name"] = name:gsub("([^%w_%-%.])", "_")
-- set priority
if not properties["priority.driver"] then
local priority = factory:find("source") and 2010 or 1010
properties["priority.driver"] = priority
properties["priority.session"] = priority
end
-- autoconnect if it's a stream
if properties["api.bluez5.profile"] == "headset-audio-gateway" or
properties["api.bluez5.profile"] == "bap-sink" or
factory:find("a2dp.source") or factory:find("media.source") then
properties["node.autoconnect"] = true
end
-- apply properties from config.rules
rulesApplyProperties(properties)
-- create the node; bluez requires "local" nodes, i.e. ones that run in
-- the same process as the spa device, for several reasons
if properties["api.bluez5.set.leader"] then
local combine = createSetNode(parent, id, type, factory, properties)
parent:store_managed_object(id + COMBINE_OFFSET, combine)
else
local node = LocalNode("adapter", properties)
node:activate(Feature.Proxy.BOUND)
parent:store_managed_object(id, node)
end
end
function removeNode(parent, id)
-- Clear also the device set module, if any
parent:store_managed_object(id + COMBINE_OFFSET, nil)
end
function createDevice(parent, id, type, factory, properties)
local device = parent:get_managed_object(id)
if not device then
-- ensure a proper device name
local name =
(properties["device.name"] or
properties["api.bluez5.address"] or
properties["device.description"] or
tostring(id)):gsub("([^%w_%-%.])", "_")
if not name:find("^bluez_card%.", 1) then
name = "bluez_card." .. name
end
properties["device.name"] = name
-- set the icon name
if not properties["device.icon-name"] then
local icon = nil
local icon_map = {
-- form factor -> icon
["microphone"] = "audio-input-microphone",
["webcam"] = "camera-web",
["handset"] = "phone",
["portable"] = "multimedia-player",
["tv"] = "video-display",
["headset"] = "audio-headset",
["headphone"] = "audio-headphones",
["speaker"] = "audio-speakers",
["hands-free"] = "audio-handsfree",
}
local f = properties["device.form-factor"]
local b = properties["device.bus"]
icon = icon_map[f] or "audio-card"
properties["device.icon-name"] = icon .. (b and ("-" .. b) or "")
end
-- initial profile is to be set by policy-device-profile.lua, not spa-bluez5
properties["bluez5.profile"] = "off"
properties["api.bluez5.id"] = id
-- apply properties from config.rules
rulesApplyProperties(properties)
-- create the device
device = SpaDevice(factory, properties)
if device then
device:connect("create-object", createNode)
device:connect("object-removed", removeNode)
parent:store_managed_object(id, device)
else
Log.warning ("Failed to create '" .. factory .. "' device")
return
end
end
Log.info(parent, string.format("%d, %s (%s): %s",
id, properties["device.description"],
properties["api.bluez5.address"], properties["api.bluez5.connection"]))
-- activate the device after the bluez profiles are connected
if properties["api.bluez5.connection"] == "connected" then
device:activate(Feature.SpaDevice.ENABLED | Feature.Proxy.BOUND)
else
device:deactivate(Features.ALL)
end
end
function createMonitor()
local monitor_props = config.properties or {}
monitor_props["api.bluez5.connection-info"] = true
local monitor = SpaDevice("api.bluez5.enum.dbus", monitor_props)
if monitor then
monitor:connect("create-object", createDevice)
else
Log.message("PipeWire's BlueZ SPA missing or broken. Bluetooth not supported.")
return nil
end
monitor:activate(Feature.SpaDevice.ENABLED)
return monitor
end
logind_plugin = Plugin.find("logind")
if logind_plugin then
-- if logind support is enabled, activate
-- the monitor only when the seat is active
function startStopMonitor(seat_state)
Log.info(logind_plugin, "Seat state changed: " .. seat_state)
if seat_state == "active" then
monitor = createMonitor()
elseif monitor then
monitor:deactivate(Feature.SpaDevice.ENABLED)
monitor = nil
end
end
logind_plugin:connect("state-changed", function(p, s) startStopMonitor(s) end)
startStopMonitor(logind_plugin:call("get-state"))
else
monitor = createMonitor()
end
nodes_om:activate()
devices_om:activate()
device_set_nodes_om:activate()
Zerion Mini Shell 1.0