From eb0c8951196c637e44daf3c0617b131b997d5d2c Mon Sep 17 00:00:00 2001
From: Lena <lena@omega>
Date: Thu, 1 Jan 2026 00:00:00 +0000
Subject: scrcpy-android: mirror an Android device over wireless ADB

Native Java app for Android 12+ that mirrors another Android
device over wireless ADB, forwarding video, audio, touch input,
and clipboard. Bundles a pinned scrcpy-server.jar and the
vendored libadb-android stack. Supports h264/h265/av1 video and
raw/opus audio with in-app codec selection. No NDK, no Kotlin.
Includes JVM unit tests and a Docker-based emulator e2e rig.
---
 .../main/java/invalid/lena/scrcpy/Sessions.java    | 75 ++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 app/src/main/java/invalid/lena/scrcpy/Sessions.java

(limited to 'app/src/main/java/invalid/lena/scrcpy/Sessions.java')

diff --git a/app/src/main/java/invalid/lena/scrcpy/Sessions.java b/app/src/main/java/invalid/lena/scrcpy/Sessions.java
new file mode 100644
index 0000000..95c0a1f
--- /dev/null
+++ b/app/src/main/java/invalid/lena/scrcpy/Sessions.java
@@ -0,0 +1,75 @@
+package invalid.lena.scrcpy;
+
+import android.app.Notification;
+import android.app.NotificationChannel;
+import android.app.NotificationManager;
+import android.app.PendingIntent;
+import android.app.Service;
+import android.content.Intent;
+import android.content.pm.ServiceInfo;
+import android.os.IBinder;
+
+// Foreground service whose only job is to keep the app process alive
+// while the user is mirroring. Mirror starts it on entry and stops it
+// in onDestroy; the running foreground service (with its notification)
+// is what keeps the OOM killer away, so the activity can survive being
+// briefly backgrounded (rotation, IME, swipe-to-home) without the
+// scrcpy server tearing down.
+//
+// Type is FOREGROUND_SERVICE_DATA_SYNC: we are pulling a continuous
+// data stream (encoded video + raw PCM) from another device.
+//
+// No binder API - the service does not own Session. Mirror owns it.
+public final class Sessions extends Service {
+
+    private static final String CHANNEL_ID = "scrcpy-android-session";
+    private static final int    NOTIF_ID   = 1;
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+        Log.i("sessions: onCreate");
+    }
+
+    @Override
+    public int onStartCommand(Intent intent, int flags, int startId) {
+        ensureChannel();
+        Notification n = new Notification.Builder(this, CHANNEL_ID)
+                .setSmallIcon(R.drawable.ic_notification)
+                .setContentTitle(getString(R.string.app_name))
+                .setContentText(getString(R.string.notif_session_active))
+                .setContentIntent(reopenIntent())
+                .setOngoing(true)
+                .build();
+        startForeground(NOTIF_ID, n, ServiceInfo.FOREGROUND_SERVICE_TYPE_DATA_SYNC);
+        return START_NOT_STICKY;
+    }
+
+    @Override
+    public IBinder onBind(Intent intent) {
+        return null;
+    }
+
+    @Override
+    public void onDestroy() {
+        Log.i("sessions: onDestroy");
+        super.onDestroy();
+    }
+
+    private void ensureChannel() {
+        NotificationManager nm = getSystemService(NotificationManager.class);
+        if (nm.getNotificationChannel(CHANNEL_ID) != null) return;
+        NotificationChannel ch = new NotificationChannel(
+                CHANNEL_ID, getString(R.string.app_name),
+                NotificationManager.IMPORTANCE_LOW);
+        ch.setDescription(getString(R.string.notif_session_active));
+        nm.createNotificationChannel(ch);
+    }
+
+    private PendingIntent reopenIntent() {
+        Intent i = new Intent(this, Main.class);
+        i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP);
+        return PendingIntent.getActivity(this, 0, i,
+                PendingIntent.FLAG_IMMUTABLE | PendingIntent.FLAG_UPDATE_CURRENT);
+    }
+}
-- 
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