diff --git a/apps/android/native/controller_protocol.h b/apps/android/native/controller_protocol.h
index b542056b..45a2173e 100644
--- a/apps/android/native/controller_protocol.h
+++ b/apps/android/native/controller_protocol.h
@@ -7,35 +7,11 @@
 #ifndef _CONTROLLER_PROTOCOL_H_
 #define _CONTROLLER_PROTOCOL_H_
 
-#include <minirtc.h>
-#include <nlohmann/json.hpp>
-#include <remote_action.h>
-
+#include "../../../libs/controller/include/mobile_controller_protocol.h"
 namespace crossdesk::android_controller {
-inline std::string SecureAttentionMessage() {
-  RemoteAction action{};
-  action.type = service_command;
-  action.c.flag = send_sas;
-  return action.to_json();
+using mobile_controller::SecureAttentionMessage;
+using mobile_controller::VideoSettingsMessage;
+using mobile_controller::NetworkReport;
 }
-inline std::string VideoSettingsMessage(int quality, int frame_rate, int preference,
-                                        uint32_t request_id) {
-  RemoteAction action{};
-  action.type = video_settings;
-  action.vs = {quality, frame_rate, preference, request_id, false};
-  return action.to_json();
-}
-
-inline nlohmann::json NetworkReport(const MiniRtcNetTrafficStats& stats, TraversalMode mode) {
-  const auto traffic = [](const MiniRtcInboundStats& in, const MiniRtcOutboundStats& out) {
-    return nlohmann::json{{"inbound", in.bitrate}, {"outbound", out.bitrate}, {"loss", in.loss_rate}};
-  };
-  return {{"rtt", stats.rtt_ms}, {"mode", mode}, {"srtp", stats.srtp_active},
-    {"video", traffic(stats.video_inbound_stats, stats.video_outbound_stats)},
-    {"audio", traffic(stats.audio_inbound_stats, stats.audio_outbound_stats)},
-    {"data", traffic(stats.data_inbound_stats, stats.data_outbound_stats)},
-    {"total", traffic(stats.total_inbound_stats, stats.total_outbound_stats)}};
-}
-}  // namespace crossdesk::android_controller
 
 #endif
diff --git a/apps/android/native/video_timing.h b/apps/android/native/video_timing.h
index 222ddc0f..6e19e442 100644
--- a/apps/android/native/video_timing.h
+++ b/apps/android/native/video_timing.h
@@ -7,21 +7,9 @@
 #ifndef _VIDEO_TIMING_H_
 #define _VIDEO_TIMING_H_
 
-#include <cstdint>
-
+#include "../../../libs/controller/include/mobile_video_timing.h"
 namespace crossdesk::android_controller {
-inline double VideoLatencyMilliseconds(uint64_t captured_us,
-                                       uint64_t received_us,
-                                       int64_t submitted_us) {
-  // MiniRTC calibrates capture time when the frame is reassembled. Validate
-  // that mapping at reception, not after decoding/Surface waits: a real local
-  // backlog over five seconds must remain visible in the latency measurement.
-  if (!captured_us || received_us < captured_us || submitted_us <= 0 ||
-      received_us > static_cast<uint64_t>(submitted_us) ||
-      received_us - captured_us > 5'000'000)
-    return -1;
-  return (static_cast<uint64_t>(submitted_us) - captured_us) / 1000.0;
+using mobile_controller::VideoLatencyMilliseconds;
 }
-}  // namespace crossdesk::android_controller
 
-#endif
\ No newline at end of file
+#endif
diff --git a/libs/controller/include/mobile_controller_protocol.h b/libs/controller/include/mobile_controller_protocol.h
new file mode 100644
index 00000000..c63db780
--- /dev/null
+++ b/libs/controller/include/mobile_controller_protocol.h
@@ -0,0 +1,41 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2026-10-02
+ * Copyright (c) 2026 by DI JUNKUN, All Rights Reserved.
+ */
+
+#ifndef _MOBILE_CONTROLLER_PROTOCOL_H_
+#define _MOBILE_CONTROLLER_PROTOCOL_H_
+
+#include <minirtc.h>
+#include <nlohmann/json.hpp>
+#include <remote_action.h>
+
+namespace crossdesk::mobile_controller {
+inline std::string SecureAttentionMessage() {
+  RemoteAction action{};
+  action.type = service_command;
+  action.c.flag = send_sas;
+  return action.to_json();
+}
+inline std::string VideoSettingsMessage(int quality, int frame_rate, int preference,
+                                        uint32_t request_id) {
+  RemoteAction action{};
+  action.type = video_settings;
+  action.vs = {quality, frame_rate, preference, request_id, false};
+  return action.to_json();
+}
+
+inline nlohmann::json NetworkReport(const MiniRtcNetTrafficStats& stats, TraversalMode mode) {
+  const auto traffic = [](const MiniRtcInboundStats& in, const MiniRtcOutboundStats& out) {
+    return nlohmann::json{{"inbound", in.bitrate}, {"outbound", out.bitrate}, {"loss", in.loss_rate}};
+  };
+  return {{"rtt", stats.rtt_ms}, {"mode", mode}, {"srtp", stats.srtp_active},
+    {"video", traffic(stats.video_inbound_stats, stats.video_outbound_stats)},
+    {"audio", traffic(stats.audio_inbound_stats, stats.audio_outbound_stats)},
+    {"data", traffic(stats.data_inbound_stats, stats.data_outbound_stats)},
+    {"total", traffic(stats.total_inbound_stats, stats.total_outbound_stats)}};
+}
+}  // namespace crossdesk::mobile_controller
+
+#endif
diff --git a/libs/controller/include/mobile_video_timing.h b/libs/controller/include/mobile_video_timing.h
new file mode 100644
index 00000000..dd6184dd
--- /dev/null
+++ b/libs/controller/include/mobile_video_timing.h
@@ -0,0 +1,27 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2026-10-02
+ * Copyright (c) 2026 by DI JUNKUN, All Rights Reserved.
+ */
+
+#ifndef _MOBILE_VIDEO_TIMING_H_
+#define _MOBILE_VIDEO_TIMING_H_
+
+#include <cstdint>
+
+namespace crossdesk::mobile_controller {
+inline double VideoLatencyMilliseconds(uint64_t captured_us,
+                                       uint64_t received_us,
+                                       int64_t submitted_us) {
+  // MiniRTC calibrates capture time when the frame is reassembled. Validate
+  // that mapping at reception, not after decoding/Surface waits: a real local
+  // backlog over five seconds must remain visible in the latency measurement.
+  if (!captured_us || received_us < captured_us || submitted_us <= 0 ||
+      received_us > static_cast<uint64_t>(submitted_us) ||
+      received_us - captured_us > 5'000'000)
+    return -1;
+  return (static_cast<uint64_t>(submitted_us) - captured_us) / 1000.0;
+}
+}  // namespace crossdesk::mobile_controller
+
+#endif