init

WebRTCControlled/app/src/main/AndroidManifest.xml

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PROJECTION" />
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
+    <uses-permission android:name="android.permission.INJECT_EVENTS" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.MaterialComponents.DayNight">
+
+        <activity
+            android:name=".MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+        <service
+            android:name=".service.ScreenCaptureService"
+            android:exported="false"
+            android:foregroundServiceType="mediaProjection" />
+
+    </application>
+
+</manifest>

WebRTCControlled/app/src/main/java/com/tt/controlled/MainActivity.java

@@ -0,0 +1,135 @@
+package com.tt.controlled;
+
+import android.Manifest;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.media.projection.MediaProjectionManager;
+import android.os.Build;
+import android.os.Bundle;
+import android.provider.Settings;
+import android.util.Log;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
+
+import com.tt.controlled.service.ScreenCaptureService;
+
+import java.util.UUID;
+
+public class MainActivity extends AppCompatActivity {
+
+    private static final String TAG = "ControlledMain";
+    private static final int REQUEST_MEDIA_PROJECTION = 1001;
+    private static final int REQUEST_NOTIFICATION_PERMISSION = 1002;
+
+    private EditText etServerUrl;
+    private EditText etDeviceId;
+    private Button btnStart;
+    private Button btnStop;
+    private TextView tvStatus;
+
+    private boolean isServiceRunning = false;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        etServerUrl = findViewById(R.id.et_server_url);
+        etDeviceId = findViewById(R.id.et_device_id);
+        btnStart = findViewById(R.id.btn_start);
+        btnStop = findViewById(R.id.btn_stop);
+        tvStatus = findViewById(R.id.tv_status);
+
+        // 默认服务器地址
+        etServerUrl.setText("ws://192.168.1.100:8080/ws/signal");
+        // 生成设备ID
+        etDeviceId.setText("controlled_" + UUID.randomUUID().toString().substring(0, 8));
+
+        btnStart.setOnClickListener(v -> startScreenSharing());
+        btnStop.setOnClickListener(v -> stopScreenSharing());
+
+        updateUI(false);
+    }
+
+    private void startScreenSharing() {
+        // 检查通知权限 (Android 13+)
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+            if (ContextCompat.checkSelfPermission(this, Manifest.permission.POST_NOTIFICATIONS)
+                    != PackageManager.PERMISSION_GRANTED) {
+                ActivityCompat.requestPermissions(this,
+                        new String[]{Manifest.permission.POST_NOTIFICATIONS},
+                        REQUEST_NOTIFICATION_PERMISSION);
+                return;
+            }
+        }
+
+        // 请求屏幕录制权限
+        MediaProjectionManager projectionManager =
+                (MediaProjectionManager) getSystemService(Context.MEDIA_PROJECTION_SERVICE);
+        startActivityForResult(projectionManager.createScreenCaptureIntent(), REQUEST_MEDIA_PROJECTION);
+    }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+
+        if (requestCode == REQUEST_MEDIA_PROJECTION) {
+            if (resultCode == RESULT_OK && data != null) {
+                Intent serviceIntent = new Intent(this, ScreenCaptureService.class);
+                serviceIntent.putExtra(ScreenCaptureService.EXTRA_RESULT_CODE, resultCode);
+                serviceIntent.putExtra(ScreenCaptureService.EXTRA_RESULT_DATA, data);
+                serviceIntent.putExtra(ScreenCaptureService.EXTRA_SERVER_URL, etServerUrl.getText().toString());
+                serviceIntent.putExtra(ScreenCaptureService.EXTRA_DEVICE_ID, etDeviceId.getText().toString());
+
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                    startForegroundService(serviceIntent);
+                } else {
+                    startService(serviceIntent);
+                }
+
+                updateUI(true);
+                Toast.makeText(this, "屏幕共享已启动", Toast.LENGTH_SHORT).show();
+            } else {
+                Toast.makeText(this, "屏幕录制权限被拒绝", Toast.LENGTH_SHORT).show();
+            }
+        }
+    }
+
+    @Override
+    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
+        if (requestCode == REQUEST_NOTIFICATION_PERMISSION) {
+            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
+                startScreenSharing();
+            } else {
+                Toast.makeText(this, "需要通知权限才能运行", Toast.LENGTH_SHORT).show();
+            }
+        }
+    }
+
+    private void stopScreenSharing() {
+        Intent serviceIntent = new Intent(this, ScreenCaptureService.class);
+        stopService(serviceIntent);
+        updateUI(false);
+        Toast.makeText(this, "屏幕共享已停止", Toast.LENGTH_SHORT).show();
+    }
+
+    private void updateUI(boolean running) {
+        isServiceRunning = running;
+        btnStart.setEnabled(!running);
+        btnStop.setEnabled(running);
+        etServerUrl.setEnabled(!running);
+        etDeviceId.setEnabled(!running);
+        tvStatus.setText(running ? "状态: 运行中" : "状态: 已停止");
+    }
+}

WebRTCControlled/app/src/main/java/com/tt/controlled/input/InputCommandHandler.java

@@ -0,0 +1,106 @@
+package com.tt.controlled.input;
+
+import android.os.SystemClock;
+import android.util.Log;
+import android.view.InputDevice;
+import android.view.InputEvent;
+import android.view.MotionEvent;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonObject;
+
+import java.lang.reflect.Method;
+
+/**
+ * 处理控制端发来的输入指令（触摸、按键）。
+ * 注意：注入输入事件需要 INJECT_EVENTS 权限，
+ * 通常需要系统签名或ADB授权才能使用。
+ */
+public class InputCommandHandler {
+
+    private static final String TAG = "InputCommandHandler";
+    private final Gson gson = new Gson();
+    private final int screenWidth;
+    private final int screenHeight;
+
+    public InputCommandHandler(int screenWidth, int screenHeight) {
+        this.screenWidth = screenWidth;
+        this.screenHeight = screenHeight;
+    }
+
+    public void handleCommand(String commandJson) {
+        try {
+            JsonObject command = gson.fromJson(commandJson, JsonObject.class);
+            String action = command.get("action").getAsString();
+
+            switch (action) {
+                case "TOUCH":
+                    handleTouch(command);
+                    break;
+                case "KEY":
+                    handleKey(command);
+                    break;
+                case "SWIPE":
+                    handleSwipe(command);
+                    break;
+                default:
+                    Log.w(TAG, "Unknown action: " + action);
+            }
+        } catch (Exception e) {
+            Log.e(TAG, "Error handling command: " + e.getMessage(), e);
+        }
+    }
+
+    private void handleTouch(JsonObject command) {
+        float relX = command.get("x").getAsFloat();
+        float relY = command.get("y").getAsFloat();
+        int x = (int) (relX * screenWidth);
+        int y = (int) (relY * screenHeight);
+
+        Log.d(TAG, "Touch at: " + x + ", " + y);
+        injectTap(x, y);
+    }
+
+    private void handleKey(JsonObject command) {
+        int keyCode = command.get("keyCode").getAsInt();
+        Log.d(TAG, "Key press: " + keyCode);
+        // 使用 Runtime.exec 模拟按键（需要root或ADB权限）
+        try {
+            Runtime.getRuntime().exec("input keyevent " + keyCode);
+        } catch (Exception e) {
+            Log.e(TAG, "Error injecting key event", e);
+        }
+    }
+
+    private void handleSwipe(JsonObject command) {
+        float relX1 = command.get("x1").getAsFloat();
+        float relY1 = command.get("y1").getAsFloat();
+        float relX2 = command.get("x2").getAsFloat();
+        float relY2 = command.get("y2").getAsFloat();
+        long duration = command.has("duration") ? command.get("duration").getAsLong() : 300;
+
+        int x1 = (int) (relX1 * screenWidth);
+        int y1 = (int) (relY1 * screenHeight);
+        int x2 = (int) (relX2 * screenWidth);
+        int y2 = (int) (relY2 * screenHeight);
+
+        Log.d(TAG, "Swipe from (" + x1 + "," + y1 + ") to (" + x2 + "," + y2 + ")");
+        injectSwipe(x1, y1, x2, y2, duration);
+    }
+
+    private void injectTap(int x, int y) {
+        try {
+            Runtime.getRuntime().exec("input tap " + x + " " + y);
+        } catch (Exception e) {
+            Log.e(TAG, "Error injecting tap event", e);
+        }
+    }
+
+    private void injectSwipe(int x1, int y1, int x2, int y2, long duration) {
+        try {
+            Runtime.getRuntime().exec("input swipe " + x1 + " " + y1 + " " + x2 + " " + y2 + " " + duration);
+        } catch (Exception e) {
+            Log.e(TAG, "Error injecting swipe event", e);
+        }
+    }
+}

WebRTCControlled/app/src/main/java/com/tt/controlled/service/ScreenCaptureService.java

@@ -0,0 +1,246 @@
+package com.tt.controlled.service;
+
+import android.app.Activity;
+import android.app.Notification;
+import android.app.NotificationChannel;
+import android.app.NotificationManager;
+import android.app.PendingIntent;
+import android.app.Service;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.ServiceInfo;
+import android.media.projection.MediaProjection;
+import android.media.projection.MediaProjectionManager;
+import android.os.Build;
+import android.os.IBinder;
+import android.util.DisplayMetrics;
+import android.util.Log;
+import android.view.WindowManager;
+
+import androidx.annotation.Nullable;
+import androidx.core.app.NotificationCompat;
+
+import com.tt.controlled.MainActivity;
+import com.tt.controlled.input.InputCommandHandler;
+import com.tt.controlled.signaling.SignalMessage;
+import com.tt.controlled.signaling.WebSocketClient;
+import com.tt.controlled.webrtc.WebRtcClient;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonObject;
+
+import org.webrtc.EglBase;
+import org.webrtc.IceCandidate;
+import org.webrtc.ScreenCapturerAndroid;
+import org.webrtc.SessionDescription;
+
+public class ScreenCaptureService extends Service {
+
+    private static final String TAG = "ScreenCaptureService";
+    private static final String CHANNEL_ID = "screen_capture_channel";
+    private static final int NOTIFICATION_ID = 1;
+
+    public static final String EXTRA_RESULT_CODE = "result_code";
+    public static final String EXTRA_RESULT_DATA = "result_data";
+    public static final String EXTRA_SERVER_URL = "server_url";
+    public static final String EXTRA_DEVICE_ID = "device_id";
+
+    private MediaProjection mediaProjection;
+    private ScreenCapturerAndroid screenCapturer;
+    private WebSocketClient wsClient;
+    private WebRtcClient webRtcClient;
+    private InputCommandHandler inputHandler;
+    private EglBase eglBase;
+    private final Gson gson = new Gson();
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+        createNotificationChannel();
+    }
+
+    @Override
+    public int onStartCommand(Intent intent, int flags, int startId) {
+        if (intent == null) {
+            stopSelf();
+            return START_NOT_STICKY;
+        }
+
+        // 创建前台通知
+        Notification notification = createNotification();
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+            startForeground(NOTIFICATION_ID, notification, ServiceInfo.FOREGROUND_SERVICE_TYPE_MEDIA_PROJECTION);
+        } else {
+            startForeground(NOTIFICATION_ID, notification);
+        }
+
+        int resultCode = intent.getIntExtra(EXTRA_RESULT_CODE, Activity.RESULT_CANCELED);
+        Intent resultData = intent.getParcelableExtra(EXTRA_RESULT_DATA);
+        String serverUrl = intent.getStringExtra(EXTRA_SERVER_URL);
+        String deviceId = intent.getStringExtra(EXTRA_DEVICE_ID);
+
+        if (resultCode != Activity.RESULT_OK || resultData == null || serverUrl == null || deviceId == null) {
+            Log.e(TAG, "Invalid service parameters");
+            stopSelf();
+            return START_NOT_STICKY;
+        }
+
+        // 获取屏幕尺寸
+        WindowManager wm = (WindowManager) getSystemService(Context.WINDOW_SERVICE);
+        DisplayMetrics dm = new DisplayMetrics();
+        wm.getDefaultDisplay().getMetrics(dm);
+        inputHandler = new InputCommandHandler(dm.widthPixels, dm.heightPixels);
+
+        startScreenCapture(resultCode, resultData, serverUrl, deviceId);
+        return START_NOT_STICKY;
+    }
+
+    @Nullable
+    @Override
+    public IBinder onBind(Intent intent) {
+        return null;
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        if (screenCapturer != null) {
+            screenCapturer.stopCapture();
+            screenCapturer.dispose();
+        }
+        if (webRtcClient != null) {
+            webRtcClient.close();
+        }
+        if (wsClient != null) {
+            wsClient.disconnect();
+        }
+        if (eglBase != null) {
+            eglBase.release();
+        }
+        if (mediaProjection != null) {
+            mediaProjection.stop();
+        }
+    }
+
+    private void startScreenCapture(int resultCode, Intent resultData, String serverUrl, String deviceId) {
+        // 初始化 MediaProjection
+        MediaProjectionManager projectionManager =
+                (MediaProjectionManager) getSystemService(Context.MEDIA_PROJECTION_SERVICE);
+        mediaProjection = projectionManager.getMediaProjection(resultCode, resultData);
+
+        // 初始化 EGL
+        eglBase = EglBase.create();
+
+        // 初始化 WebSocket
+        wsClient = new WebSocketClient(serverUrl, deviceId);
+        wsClient.setListener(new WebSocketClient.SignalListener() {
+            @Override
+            public void onConnected() {
+                Log.i(TAG, "Connected to signal server");
+            }
+
+            @Override
+            public void onDisconnected() {
+                Log.i(TAG, "Disconnected from signal server");
+            }
+
+            @Override
+            public void onError(String error) {
+                Log.e(TAG, "WebSocket error: " + error);
+            }
+
+            @Override
+            public void onMessage(SignalMessage message) {
+                handleSignalMessage(message);
+            }
+        });
+        wsClient.connect();
+
+        // 初始化 WebRTC
+        webRtcClient = new WebRtcClient(this, wsClient, deviceId);
+        webRtcClient.initialize(eglBase);
+        webRtcClient.setInputCallback(commandJson -> inputHandler.handleCommand(commandJson));
+
+        // 初始化屏幕捕获
+        screenCapturer = new ScreenCapturerAndroid(resultData, new ScreenCapturerAndroid.Callback() {
+            @Override
+            public void onCapturerStarted(boolean success) {
+                Log.d(TAG, "Screen capture started: " + success);
+            }
+
+            @Override
+            public void onCapturerStopped() {
+                Log.d(TAG, "Screen capture stopped");
+            }
+        });
+
+        webRtcClient.setVideoCapturer(screenCapturer);
+    }
+
+    private void handleSignalMessage(SignalMessage message) {
+        String type = message.getType();
+        if (type == null) return;
+
+        switch (type.toUpperCase()) {
+            case "OFFER":
+                handleOffer(message);
+                break;
+            case "ICE_CANDIDATE":
+                handleIceCandidate(message);
+                break;
+        }
+    }
+
+    private void handleOffer(SignalMessage message) {
+        String offerSdp = null;
+        try {
+            JsonObject payload = gson.fromJson(message.getPayload(), JsonObject.class);
+            offerSdp = payload.get("sdp").getAsString();
+        } catch (Exception e) {
+            Log.e(TAG, "Error parsing offer SDP", e);
+            return;
+        }
+
+        String controllerId = message.getFromDeviceId();
+        webRtcClient.createPeerConnectionAndAnswer(offerSdp, controllerId);
+    }
+
+    private void handleIceCandidate(SignalMessage message) {
+        try {
+            JsonObject payload = gson.fromJson(message.getPayload(), JsonObject.class);
+            String sdpMid = payload.get("sdpMid").getAsString();
+            int sdpMLineIndex = payload.get("sdpMLineIndex").getAsInt();
+            String candidate = payload.get("candidate").getAsString();
+
+            IceCandidate iceCandidate = new IceCandidate(sdpMid, sdpMLineIndex, candidate);
+            webRtcClient.addIceCandidate(iceCandidate);
+        } catch (Exception e) {
+            Log.e(TAG, "Error parsing ICE candidate", e);
+        }
+    }
+
+    private Notification createNotification() {
+        Intent notificationIntent = new Intent(this, MainActivity.class);
+        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent,
+                PendingIntent.FLAG_UPDATE_CURRENT | PendingIntent.FLAG_IMMUTABLE);
+
+        return new NotificationCompat.Builder(this, CHANNEL_ID)
+                .setContentTitle("屏幕共享中")
+                .setContentText("远程控制服务正在运行")
+                .setSmallIcon(android.R.drawable.ic_menu_camera)
+                .setContentIntent(pendingIntent)
+                .build();
+    }
+
+    private void createNotificationChannel() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            NotificationChannel channel = new NotificationChannel(
+                    CHANNEL_ID,
+                    "屏幕共享服务",
+                    NotificationManager.IMPORTANCE_LOW);
+            channel.setDescription("远程控制屏幕采集前台服务");
+            NotificationManager manager = getSystemService(NotificationManager.class);
+            manager.createNotificationChannel(channel);
+        }
+    }
+}

WebRTCControlled/app/src/main/java/com/tt/controlled/signaling/SignalMessage.java

@@ -0,0 +1,34 @@
+package com.tt.controlled.signaling;
+
+public class SignalMessage {
+
+    private String type;
+    private String fromDeviceId;
+    private String toDeviceId;
+    private String deviceType;
+    private String payload;
+
+    public SignalMessage() {}
+
+    public SignalMessage(String type, String fromDeviceId, String toDeviceId, String payload) {
+        this.type = type;
+        this.fromDeviceId = fromDeviceId;
+        this.toDeviceId = toDeviceId;
+        this.payload = payload;
+    }
+
+    public String getType() { return type; }
+    public void setType(String type) { this.type = type; }
+
+    public String getFromDeviceId() { return fromDeviceId; }
+    public void setFromDeviceId(String fromDeviceId) { this.fromDeviceId = fromDeviceId; }
+
+    public String getToDeviceId() { return toDeviceId; }
+    public void setToDeviceId(String toDeviceId) { this.toDeviceId = toDeviceId; }
+
+    public String getDeviceType() { return deviceType; }
+    public void setDeviceType(String deviceType) { this.deviceType = deviceType; }
+
+    public String getPayload() { return payload; }
+    public void setPayload(String payload) { this.payload = payload; }
+}

WebRTCControlled/app/src/main/java/com/tt/controlled/signaling/WebSocketClient.java

@@ -0,0 +1,117 @@
+package com.tt.controlled.signaling;
+
+import android.os.Handler;
+import android.os.Looper;
+import android.util.Log;
+
+import com.google.gson.Gson;
+
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.Response;
+import okhttp3.WebSocket;
+import okhttp3.WebSocketListener;
+
+public class WebSocketClient {
+
+    private static final String TAG = "WebSocketClient";
+
+    private final String serverUrl;
+    private final String deviceId;
+    private final Gson gson = new Gson();
+    private final Handler mainHandler = new Handler(Looper.getMainLooper());
+    private OkHttpClient client;
+    private WebSocket webSocket;
+    private SignalListener listener;
+
+    public interface SignalListener {
+        void onConnected();
+        void onDisconnected();
+        void onError(String error);
+        void onMessage(SignalMessage message);
+    }
+
+    public WebSocketClient(String serverUrl, String deviceId) {
+        this.serverUrl = serverUrl;
+        this.deviceId = deviceId;
+    }
+
+    public void setListener(SignalListener listener) {
+        this.listener = listener;
+    }
+
+    public void connect() {
+        client = new OkHttpClient.Builder().build();
+        Request request = new Request.Builder().url(serverUrl).build();
+
+        webSocket = client.newWebSocket(request, new WebSocketListener() {
+            @Override
+            public void onOpen(WebSocket ws, Response response) {
+                Log.i(TAG, "WebSocket connected");
+                // 发送注册消息
+                registerDevice();
+                mainHandler.post(() -> {
+                    if (listener != null) listener.onConnected();
+                });
+            }
+
+            @Override
+            public void onMessage(WebSocket ws, String text) {
+                Log.d(TAG, "Received: " + text);
+                try {
+                    SignalMessage message = gson.fromJson(text, SignalMessage.class);
+                    mainHandler.post(() -> {
+                        if (listener != null) listener.onMessage(message);
+                    });
+                } catch (Exception e) {
+                    Log.e(TAG, "Error parsing message", e);
+                }
+            }
+
+            @Override
+            public void onClosed(WebSocket ws, int code, String reason) {
+                Log.i(TAG, "WebSocket closed: " + reason);
+                mainHandler.post(() -> {
+                    if (listener != null) listener.onDisconnected();
+                });
+            }
+
+            @Override
+            public void onFailure(WebSocket ws, Throwable t, Response response) {
+                Log.e(TAG, "WebSocket error: " + t.getMessage(), t);
+                mainHandler.post(() -> {
+                    if (listener != null) listener.onError(t.getMessage());
+                });
+            }
+        });
+    }
+
+    public void sendMessage(SignalMessage message) {
+        if (webSocket != null) {
+            String json = gson.toJson(message);
+            Log.d(TAG, "Sending: " + json);
+            webSocket.send(json);
+        }
+    }
+
+    public void disconnect() {
+        if (webSocket != null) {
+            webSocket.close(1000, "Disconnecting");
+        }
+        if (client != null) {
+            client.dispatcher().executorService().shutdown();
+        }
+    }
+
+    private void registerDevice() {
+        SignalMessage registerMsg = new SignalMessage();
+        registerMsg.setType("REGISTER");
+        registerMsg.setFromDeviceId(deviceId);
+        registerMsg.setDeviceType("CONTROLLED");
+        sendMessage(registerMsg);
+    }
+
+    public boolean isConnected() {
+        return webSocket != null;
+    }
+}

WebRTCControlled/app/src/main/java/com/tt/controlled/webrtc/AppSdpObserver.java

@@ -0,0 +1,48 @@
+package com.tt.controlled.webrtc;
+
+import android.util.Log;
+
+import org.webrtc.SdpObserver;
+import org.webrtc.SessionDescription;
+
+public class AppSdpObserver implements SdpObserver {
+
+    private static final String TAG = "AppSdpObserver";
+
+    private final SdpEventListener listener;
+
+    public interface SdpEventListener {
+        void onCreateSuccess(SessionDescription sdp);
+        void onSetSuccess();
+        void onCreateFailure(String error);
+        void onSetFailure(String error);
+    }
+
+    public AppSdpObserver(SdpEventListener listener) {
+        this.listener = listener;
+    }
+
+    @Override
+    public void onCreateSuccess(SessionDescription sdp) {
+        Log.d(TAG, "SDP created: " + sdp.type);
+        if (listener != null) listener.onCreateSuccess(sdp);
+    }
+
+    @Override
+    public void onSetSuccess() {
+        Log.d(TAG, "SDP set success");
+        if (listener != null) listener.onSetSuccess();
+    }
+
+    @Override
+    public void onCreateFailure(String error) {
+        Log.e(TAG, "SDP create failure: " + error);
+        if (listener != null) listener.onCreateFailure(error);
+    }
+
+    @Override
+    public void onSetFailure(String error) {
+        Log.e(TAG, "SDP set failure: " + error);
+        if (listener != null) listener.onSetFailure(error);
+    }
+}

WebRTCControlled/app/src/main/java/com/tt/controlled/webrtc/PeerObserver.java

@@ -0,0 +1,77 @@
+package com.tt.controlled.webrtc;
+
+import org.webrtc.DataChannel;
+import org.webrtc.IceCandidate;
+import org.webrtc.MediaStream;
+import org.webrtc.PeerConnection;
+import org.webrtc.RtpReceiver;
+
+public class PeerObserver implements PeerConnection.Observer {
+
+    private static final String TAG = "PeerObserver";
+
+    private final PeerEventListener listener;
+
+    public interface PeerEventListener {
+        void onIceCandidate(IceCandidate candidate);
+        void onIceConnectionChange(PeerConnection.IceConnectionState newState);
+        void onDataChannel(DataChannel dataChannel);
+        void onAddStream(MediaStream stream);
+        void onRemoveStream(MediaStream stream);
+    }
+
+    public PeerObserver(PeerEventListener listener) {
+        this.listener = listener;
+    }
+
+    @Override
+    public void onSignalingChange(PeerConnection.SignalingState newState) {
+        android.util.Log.d(TAG, "Signaling state: " + newState);
+    }
+
+    @Override
+    public void onIceConnectionChange(PeerConnection.IceConnectionState newState) {
+        android.util.Log.d(TAG, "ICE connection state: " + newState);
+        if (listener != null) listener.onIceConnectionChange(newState);
+    }
+
+    @Override
+    public void onIceConnectionReceivingChange(boolean receiving) {}
+
+    @Override
+    public void onIceGatheringChange(PeerConnection.IceGatheringState newState) {
+        android.util.Log.d(TAG, "ICE gathering state: " + newState);
+    }
+
+    @Override
+    public void onIceCandidate(IceCandidate candidate) {
+        if (listener != null) listener.onIceCandidate(candidate);
+    }
+
+    @Override
+    public void onIceCandidatesRemoved(IceCandidate[] candidates) {}
+
+    @Override
+    public void onAddStream(MediaStream stream) {
+        if (listener != null) listener.onAddStream(stream);
+    }
+
+    @Override
+    public void onRemoveStream(MediaStream stream) {
+        if (listener != null) listener.onRemoveStream(stream);
+    }
+
+    @Override
+    public void onDataChannel(DataChannel dataChannel) {
+        android.util.Log.d(TAG, "Remote data channel received");
+        if (listener != null) listener.onDataChannel(dataChannel);
+    }
+
+    @Override
+    public void onRenegotiationNeeded() {
+        android.util.Log.d(TAG, "Renegotiation needed");
+    }
+
+    @Override
+    public void onAddTrack(RtpReceiver receiver, MediaStream[] streams) {}
+}

WebRTCControlled/app/src/main/java/com/tt/controlled/webrtc/WebRtcClient.java

@@ -0,0 +1,254 @@
+package com.tt.controlled.webrtc;
+
+import android.content.Context;
+import android.util.Log;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonObject;
+import com.tt.controlled.signaling.SignalMessage;
+import com.tt.controlled.signaling.WebSocketClient;
+
+import org.webrtc.DataChannel;
+import org.webrtc.DefaultVideoEncoderFactory;
+import org.webrtc.EglBase;
+import org.webrtc.IceCandidate;
+import org.webrtc.MediaConstraints;
+import org.webrtc.MediaStream;
+import org.webrtc.PeerConnection;
+import org.webrtc.PeerConnectionFactory;
+import org.webrtc.SessionDescription;
+import org.webrtc.VideoCapturer;
+import org.webrtc.VideoSource;
+import org.webrtc.VideoTrack;
+
+import java.nio.ByteBuffer;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.List;
+
+public class WebRtcClient {
+
+    private static final String TAG = "WebRtcClient";
+    private static final String VIDEO_TRACK_ID = "screen_track";
+    private static final String STREAM_ID = "screen_stream";
+    private static final String DATA_CHANNEL_LABEL = "control_channel";
+
+    private final Context context;
+    private final WebSocketClient wsClient;
+    private final String deviceId;
+    private final Gson gson = new Gson();
+
+    private PeerConnectionFactory peerConnectionFactory;
+    private PeerConnection peerConnection;
+    private DataChannel dataChannel;
+    private VideoTrack videoTrack;
+    private EglBase eglBase;
+    private String currentControllerId;
+
+    private InputCommandCallback inputCallback;
+
+    public interface InputCommandCallback {
+        void onCommandReceived(String commandJson);
+    }
+
+    public WebRtcClient(Context context, WebSocketClient wsClient, String deviceId) {
+        this.context = context;
+        this.wsClient = wsClient;
+        this.deviceId = deviceId;
+    }
+
+    public void setInputCallback(InputCommandCallback callback) {
+        this.inputCallback = callback;
+    }
+
+    public void initialize(EglBase eglBase) {
+        this.eglBase = eglBase;
+        PeerConnectionFactory.InitializationOptions initOptions =
+                PeerConnectionFactory.InitializationOptions.builder(context)
+                        .setFieldTrials("WebRTC-H264HighProfile/Enabled/")
+                        .createInitializationOptions();
+        PeerConnectionFactory.initialize(initOptions);
+
+        PeerConnectionFactory.Options options = new PeerConnectionFactory.Options();
+        peerConnectionFactory = PeerConnectionFactory.builder()
+                .setOptions(options)
+                .setVideoEncoderFactory(new DefaultVideoEncoderFactory(eglBase.getEglBaseContext(), true, true))
+                .createPeerConnectionFactory();
+    }
+
+    public void setVideoCapturer(VideoCapturer capturer) {
+        VideoSource videoSource = peerConnectionFactory.createVideoSource(false);
+        capturer.initialize(null, context, videoSource.getCapturerObserver());
+        capturer.startCapture(1280, 720, 30);
+
+        videoTrack = peerConnectionFactory.createVideoTrack(VIDEO_TRACK_ID, videoSource);
+    }
+
+    public void createPeerConnectionAndAnswer(String offerSdp, String controllerId) {
+        this.currentControllerId = controllerId;
+
+        PeerConnection.RTCConfiguration config = new PeerConnection.RTCConfiguration(new ArrayList<>());
+        config.sdpSemantics = PeerConnection.SdpSemantics.UNIFIED_PLAN;
+
+        PeerObserver peerObserver = new PeerObserver(new PeerObserver.PeerEventListener() {
+            @Override
+            public void onIceCandidate(IceCandidate candidate) {
+                sendIceCandidate(candidate, controllerId);
+            }
+
+            @Override
+            public void onIceConnectionChange(PeerConnection.IceConnectionState newState) {
+                Log.d(TAG, "ICE connection state: " + newState);
+            }
+
+            @Override
+            public void onDataChannel(DataChannel dc) {
+                Log.d(TAG, "Data channel received: " + dc.label());
+                handleDataChannel(dc);
+            }
+
+            @Override
+            public void onAddStream(MediaStream stream) {}
+
+            @Override
+            public void onRemoveStream(MediaStream stream) {}
+        });
+
+        peerConnection = peerConnectionFactory.createPeerConnection(config, peerObserver);
+
+        if (videoTrack != null) {
+            MediaStream stream = peerConnectionFactory.createLocalMediaStream(STREAM_ID);
+            stream.addTrack(videoTrack);
+            peerConnection.addStream(stream);
+        }
+
+        // 创建本地 DataChannel
+        DataChannel.Init dcInit = new DataChannel.Init();
+        dcInit.ordered = true;
+        dataChannel = peerConnection.createDataChannel(DATA_CHANNEL_LABEL, dcInit);
+        handleDataChannel(dataChannel);
+
+        // 设置远端 SDP (Offer)
+        SessionDescription remoteSdp = new SessionDescription(SessionDescription.Type.OFFER, offerSdp);
+        peerConnection.setRemoteDescription(new AppSdpObserver(new AppSdpObserver.SdpEventListener() {
+            @Override
+            public void onCreateSuccess(SessionDescription sdp) {}
+
+            @Override
+            public void onSetSuccess() {
+                // 创建 Answer
+                MediaConstraints constraints = new MediaConstraints();
+                peerConnection.createAnswer(new AppSdpObserver(new AppSdpObserver.SdpEventListener() {
+                    @Override
+                    public void onCreateSuccess(SessionDescription sdp) {
+                        peerConnection.setLocalDescription(new AppSdpObserver(new AppSdpObserver.SdpEventListener() {
+                            @Override
+                            public void onCreateSuccess(SessionDescription s) {}
+                            @Override
+                            public void onSetSuccess() {
+                                sendAnswer(sdp.description, controllerId);
+                            }
+                            @Override
+                            public void onCreateFailure(String error) {}
+                            @Override
+                            public void onSetFailure(String error) {}
+                        }), sdp);
+                    }
+
+                    @Override
+                    public void onSetSuccess() {}
+                    @Override
+                    public void onCreateFailure(String error) {}
+                    @Override
+                    public void onSetFailure(String error) {}
+                }), constraints);
+            }
+
+            @Override
+            public void onCreateFailure(String error) {}
+            @Override
+            public void onSetFailure(String error) {}
+        }), remoteSdp);
+    }
+
+    public void addIceCandidate(IceCandidate candidate) {
+        if (peerConnection != null) {
+            peerConnection.addIceCandidate(candidate);
+        }
+    }
+
+    public void sendInputResponse(String responseJson) {
+        if (dataChannel != null && dataChannel.state() == DataChannel.State.OPEN) {
+            DataChannel.Buffer buffer = new DataChannel.Buffer(
+                    ByteBuffer.wrap(responseJson.getBytes(StandardCharsets.UTF_8)), false);
+            dataChannel.send(buffer);
+        }
+    }
+
+    public void close() {
+        if (dataChannel != null) {
+            dataChannel.close();
+            dataChannel.dispose();
+        }
+        if (peerConnection != null) {
+            peerConnection.close();
+            peerConnection.dispose();
+        }
+        if (peerConnectionFactory != null) {
+            peerConnectionFactory.dispose();
+        }
+    }
+
+    private void handleDataChannel(DataChannel dc) {
+        dc.registerObserver(new DataChannel.Observer() {
+            @Override
+            public void onBufferedAmountChange(long previousAmount) {}
+
+            @Override
+            public void onStateChange() {
+                Log.d(TAG, "DataChannel state: " + dc.state());
+            }
+
+            @Override
+            public void onMessage(DataChannel.Buffer buffer) {
+                byte[] data = new byte[buffer.data.remaining()];
+                buffer.data.get(data);
+                String message = new String(data, StandardCharsets.UTF_8);
+                Log.d(TAG, "DataChannel message: " + message);
+                if (inputCallback != null) {
+                    inputCallback.onCommandReceived(message);
+                }
+            }
+        });
+    }
+
+    private void sendAnswer(String sdp, String controllerId) {
+        SignalMessage msg = new SignalMessage();
+        msg.setType("ANSWER");
+        msg.setFromDeviceId(deviceId);
+        msg.setToDeviceId(controllerId);
+        msg.setDeviceType("CONTROLLED");
+
+        JsonObject payload = new JsonObject();
+        payload.addProperty("sdp", sdp);
+        msg.setPayload(payload.toString());
+
+        wsClient.sendMessage(msg);
+    }
+
+    private void sendIceCandidate(IceCandidate candidate, String controllerId) {
+        SignalMessage msg = new SignalMessage();
+        msg.setType("ICE_CANDIDATE");
+        msg.setFromDeviceId(deviceId);
+        msg.setToDeviceId(controllerId);
+        msg.setDeviceType("CONTROLLED");
+
+        JsonObject payload = new JsonObject();
+        payload.addProperty("sdpMid", candidate.sdpMid);
+        payload.addProperty("sdpMLineIndex", candidate.sdpMLineIndex);
+        payload.addProperty("candidate", candidate.sdp);
+        msg.setPayload(payload.toString());
+
+        wsClient.sendMessage(msg);
+    }
+}

WebRTCControlled/app/src/main/res/layout/activity_main.xml

@@ -0,0 +1,67 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="24dp">
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="WebRTC 被控端"
+        android:textSize="24sp"
+        android:textStyle="bold"
+        android:layout_marginBottom="24dp"/>
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="信令服务器地址:"
+        android:textSize="14sp"/>
+
+    <EditText
+        android:id="@+id/et_server_url"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:inputType="textUri"
+        android:hint="ws://192.168.1.100:8080/ws/signal"
+        android:layout_marginBottom="16dp"/>
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="设备ID:"
+        android:textSize="14sp"/>
+
+    <EditText
+        android:id="@+id/et_device_id"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:inputType="text"
+        android:hint="设备ID"
+        android:layout_marginBottom="24dp"/>
+
+    <TextView
+        android:id="@+id/tv_status"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="状态: 已停止"
+        android:textSize="16sp"
+        android:textStyle="bold"
+        android:layout_marginBottom="24dp"/>
+
+    <Button
+        android:id="@+id/btn_start"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="开始屏幕共享"
+        android:layout_marginBottom="8dp"/>
+
+    <Button
+        android:id="@+id/btn_stop"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="停止屏幕共享"
+        android:enabled="false"/>
+
+</LinearLayout>

WebRTCControlled/app/src/main/res/values/strings.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_name">WebRTC被控端</string>
+</resources>