New wireplumber config

.config/wireplumber/scripts/device/find-best-profile.lua

@@ -0,0 +1,75 @@
+-- WirePlumber
+--
+-- Copyright © 2022 Collabora Ltd.
+--
+-- SPDX-License-Identifier: MIT
+--
+-- Find the best profile for a device based on profile priorities and
+-- availability
+
+cutils = require ("common-utils")
+log = Log.open_topic ("s-device")
+
+SimpleEventHook {
+  name = "device/find-best-profile",
+  after = "device/find-preferred-profile",
+  before = "device/apply-profile",
+  interests = {
+    EventInterest {
+      Constraint { "event.type", "=", "select-profile" },
+    },
+  },
+  execute = function (event)
+    local selected_profile = event:get_data ("selected-profile")
+
+    -- skip hook if profile is already selected
+    if selected_profile then
+      return
+    end
+
+    local device = event:get_subject ()
+    local dev_name = device.properties["device.name"] or ""
+    local off_profile = nil
+    local best_profile = nil
+    local unk_profile = nil
+    -- Takes absolute priority if available or unknown
+    local profile_prop = device.properties["device.profile"]
+
+
+    for p in device:iterate_params ("EnumProfile") do
+      profile = cutils.parseParam (p, "EnumProfile")
+      if profile and profile.name == profile_prop and profile.available ~= "no" then
+        selected_profile = profile
+        goto profile_set
+      elseif profile and profile.name ~= "pro-audio" then
+        if profile.name == "off" then
+          off_profile = profile
+        elseif profile.available == "yes" then
+          if best_profile == nil or profile.priority > best_profile.priority then
+            best_profile = profile
+          end
+        elseif profile.available ~= "no" then
+          if unk_profile == nil or profile.priority > unk_profile.priority then
+            unk_profile = profile
+          end
+        end
+      end
+    end
+
+    if best_profile ~= nil then
+      selected_profile = best_profile
+    elseif unk_profile ~= nil then
+      selected_profile = unk_profile
+    elseif off_profile ~= nil then
+      selected_profile = off_profile
+    end
+
+::profile_set::
+    if selected_profile then
+      log:info (device, string.format (
+          "Found best profile '%s' (%d) for device '%s'",
+          selected_profile.name, selected_profile.index, dev_name))
+      event:set_data ("selected-profile", selected_profile)
+    end
+  end
+}:register()