codec thread count depending on cpu condition

Signed-off-by: 21pages <pages21@163.com>

src/ipc.rs

@@ -229,6 +229,8 @@ pub enum Data {
     #[cfg(all(feature = "flutter", feature = "plugin_framework"))]
     #[cfg(not(any(target_os = "android", target_os = "ios")))]
     Plugin(Plugin),
+    #[cfg(windows)]
+    SyncWinCpuUsage(Option<f64>),
 }
 
 #[tokio::main(flavor = "current_thread")]
@@ -452,6 +454,16 @@ async fn handle(data: Data, stream: &mut Connection) {
                     .await
             );
         }
+        #[cfg(windows)]
+        Data::SyncWinCpuUsage(None) => {
+            allow_err!(
+                stream
+                    .send(&Data::SyncWinCpuUsage(
+                        hbb_common::platform::windows::cpu_uage_one_minute()
+                    ))
+                    .await
+            );
+        }
         Data::TestRendezvousServer => {
             crate::test_rendezvous_server();
         }