Commit 7907d39a authored by Wim Taymans's avatar Wim Taymans
Browse files

scripts: add libcamera monitor

parent a13308ba
Pipeline #417328 failed with stages
in 1 minute and 5 seconds
libcamera_monitor = {}
libcamera_monitor.properties = {}
libcamera_monitor.rules = {}
function libcamera_monitor.enable()
load_monitor("libcamera", {
properties = libcamera_monitor.properties,
rules = libcamera_monitor.rules,
})
end
libcamera_monitor.rules = {
-- An array of matches/actions to evaluate.
{
-- Rules for matching a device or node. It is an array of
-- properties that all need to match the regexp. If any of the
-- matches work, the actions are executed for the object.
matches = {
{
-- This matches all cards.
{ "device.name", "matches", "libcamera_device.*" },
},
},
-- Apply properties on the matched object.
apply_properties = {
-- ["device.nick"] = "My Device",
},
},
{
matches = {
{
-- Matches all sources.
{ "node.name", "matches", "libcamera_input.*" },
},
{
-- Matches all sinks.
{ "node.name", "matches", "libcamera_output.*" },
},
},
apply_properties = {
--["node.nick"] = "My Node",
--["priority.driver"] = 100,
--["priority.session"] = 100,
--["node.pause-on-idle"] = false,
},
},
}
-- WirePlumber
--
-- Copyright © 2021 Collabora Ltd.
-- @author George Kiagiadakis <george.kiagiadakis@collabora.com>
--
-- SPDX-License-Identifier: MIT
local config = ... or {}
-- 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 findDuplicate(parent, id, property, value)
for i = 0, id - 1, 1 do
local obj = parent:get_managed_object(i)
if obj and obj.properties[property] == value then
return true
end
end
return false
end
function createNode(parent, id, type, factory, properties)
local dev_props = parent.properties
-- 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 name
local name =
(factory:find("sink") and "libcamera_output") or
(factory:find("source") and "libcamera_input" or factory)
.. "." ..
(dev_props["device.name"]:gsub("^libcamera_device%.(.+)", "%1") or
dev_props["device.name"] or
dev_props["device.nick"] or
dev_props["device.alias"] or
"libcamera-device")
-- sanitize name
name = name:gsub("([^%w_%-%.])", "_")
properties["node.name"] = name
-- deduplicate nodes with the same name
for counter = 2, 99, 1 do
if findDuplicate(parent, id, "node.name", properties["node.name"]) then
properties["node.name"] = name .. "." .. counter
else
break
end
end
-- set the node description
local desc = dev_props["device.description"] or "libcamera-device"
-- sanitize description, replace ':' with ' '
properties["node.description"] = desc:gsub("(:)", " ")
-- apply properties from config.rules
rulesApplyProperties(properties)
-- create the node
local node = Node("spa-node-factory", properties)
node:activate(Feature.Proxy.BOUND)
parent:store_managed_object(id, node)
end
function createDevice(parent, id, type, factory, properties)
-- ensure the device has an appropriate name
local name = "libcamera_device." ..
(properties["device.name"] or
properties["device.bus-id"] or
properties["device.bus-path"] or
tostring(id)):gsub("([^%w_%-%.])", "_")
properties["device.name"] = name
-- deduplicate devices with the same name
for counter = 2, 99, 1 do
if findDuplicate(parent, id, "device.name", properties["device.name"]) then
properties["device.name"] = name .. "." .. counter
else
break
end
end
-- ensure the device has a description
properties["device.description"] =
properties["device.description"]
or properties["device.product.name"]
or "Unknown device"
-- apply properties from config.rules
rulesApplyProperties(properties)
-- create the device
local device = SpaDevice(factory, properties)
device:connect("create-object", createNode)
device:activate(Feature.SpaDevice.ENABLED | Feature.Proxy.BOUND)
parent:store_managed_object(id, device)
end
monitor = SpaDevice("api.libcamera.enum.client", config.properties or {})
if monitor then
monitor:connect("create-object", createDevice)
monitor:activate(Feature.SpaDevice.ENABLED)
else
Log.message("PipeWire's libcamera SPA missing or broken. libcamera not supported.")
end
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