Adding lots of cool stuff to dotfiles

.config/wireplumber/scripts/suspend-node.lua

@@ -0,0 +1,56 @@
+-- WirePlumber
+--
+-- Copyright © 2021 Collabora Ltd.
+--    @author George Kiagiadakis <george.kiagiadakis@collabora.com>
+--
+-- SPDX-License-Identifier: MIT
+
+om = ObjectManager {
+  Interest { type = "node",
+    Constraint { "media.class", "matches", "Audio/*" }
+  },
+  Interest { type = "node",
+    Constraint { "media.class", "matches", "Video/*" }
+  },
+}
+
+sources = {}
+
+om:connect("object-added", function (om, node)
+  node:connect("state-changed", function (node, old_state, cur_state)
+    -- Always clear the current source if any
+    local id = node["bound-id"]
+    if sources[id] then
+      sources[id]:destroy()
+      sources[id] = nil
+    end
+
+    -- Add a timeout source if idle for at least 5 seconds
+    if cur_state == "idle" or cur_state == "error" then
+      -- honor "session.suspend-timeout-seconds" if specified
+      local timeout =
+          tonumber(node.properties["session.suspend-timeout-seconds"]) or 5
+
+      if timeout == 0 then
+        return
+      end
+
+      -- add idle timeout; multiply by 1000, timeout_add() expects ms
+      sources[id] = Core.timeout_add(timeout * 1000, function()
+        -- Suspend the node
+        Log.info(node, "was idle for a while; suspending ...")
+        node:send_command("Suspend")
+
+        -- Unref the source
+        sources[id] = nil
+
+        -- false (== G_SOURCE_REMOVE) destroys the source so that this
+        -- function does not get fired again after 5 seconds
+        return false
+      end)
+    end
+
+  end)
+end)
+
+om:activate()