From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Dmitry Muhomor <muhomor.dmitry@gmail.com>
Date: Sun, 31 Jul 2022 11:19:33 +0300
Subject: [PATCH] Bluetooth auto turn off
Co-authored-by: Pratyush <codelab@pratyush.dev>
---
core/java/android/provider/Settings.java | 6 ++
.../android/server/ext/BluetoothAutoOff.java | 69 +++++++++++++++++++
.../android/server/ext/SystemServerExt.java | 4 ++
3 files changed, 79 insertions(+)
create mode 100644 services/core/java/com/android/server/ext/BluetoothAutoOff.java
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index c22d62c0d40c..9fae9911e2fc 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -18686,6 +18686,12 @@ public final class Settings {
*/
public static final String WIFI_OFF_TIMEOUT = "wifi_off_timeout";
+ /**
+ * The amount of time in milliseconds before a disconnected Bluetooth adapter is turned off
+ * @hide
+ */
+ public static final String BLUETOOTH_OFF_TIMEOUT = "bluetooth_off_timeout";
+
/**
* Whether repair mode is active on the device.
* <p>
diff --git a/services/core/java/com/android/server/ext/BluetoothAutoOff.java b/services/core/java/com/android/server/ext/BluetoothAutoOff.java
new file mode 100644
index 000000000000..4e7dbc042f37
--- /dev/null
+++ b/services/core/java/com/android/server/ext/BluetoothAutoOff.java
@@ -0,0 +1,69 @@
+package com.android.server.ext;
+
+import android.annotation.Nullable;
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothManager;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.os.Build;
+import android.provider.Settings;
+import android.util.Slog;
+
+class BluetoothAutoOff extends DelayedConditionalAction {
+ @Nullable
+ private final BluetoothAdapter adapter;
+
+ BluetoothAutoOff(SystemServerExt sse) {
+ super(sse, sse.bgHandler);
+ adapter = sse.context.getSystemService(BluetoothManager.class).getAdapter();
+ }
+
+ @Override
+ protected boolean shouldScheduleAlarm() {
+ return isAdapterOnAndDisconnected();
+ }
+
+ @Override
+ protected void alarmTriggered() {
+ if (isAdapterOnAndDisconnected()) {
+ adapter.disable();
+ }
+ }
+
+ @Override
+ protected void registerStateListener() {
+ IntentFilter f = new IntentFilter();
+ f.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);
+ f.addAction(BluetoothAdapter.ACTION_CONNECTION_STATE_CHANGED);
+
+ sse.registerReceiver(new BroadcastReceiver() {
+ @Override
+ public void onReceive(Context broadcastContext, Intent intent) {
+ if (Build.isDebuggable()) {
+ Slog.d("BtAutoOff", "" + intent + ", extras " + intent.getExtras().deepCopy());
+ }
+ update();
+ }
+ }, f, handler);
+ }
+
+ private boolean isAdapterOnAndDisconnected() {
+ if (adapter != null) {
+ int state = adapter.getLeStateSysApi(); // getState() converts BLE states into STATE_OFF
+
+ if (state == BluetoothAdapter.STATE_ON || state == BluetoothAdapter.STATE_BLE_ON) {
+ // getConnectionState() converts BLE states into STATE_DISCONNECTED
+ return adapter.getConnectionStateLeAware() == BluetoothAdapter.STATE_DISCONNECTED;
+ }
+ }
+
+ return false;
+ }
+
+ @Override
+ protected String getDelayGlobalSettingsKey() {
+ return Settings.Global.BLUETOOTH_OFF_TIMEOUT;
+ }
+}
diff --git a/services/core/java/com/android/server/ext/SystemServerExt.java b/services/core/java/com/android/server/ext/SystemServerExt.java
index 66350e2b7f74..3c341ed25f4e 100644
--- a/services/core/java/com/android/server/ext/SystemServerExt.java
+++ b/services/core/java/com/android/server/ext/SystemServerExt.java
@@ -53,6 +53,10 @@ public final class SystemServerExt {
if (packageManager.hasSystemFeature(PackageManager.FEATURE_WIFI, 0)) {
new WifiAutoOff(this);
}
+
+ if (packageManager.hasSystemFeature(PackageManager.FEATURE_BLUETOOTH, 0)) {
+ new BluetoothAutoOff(this);
+ }
}
public void registerReceiver(BroadcastReceiver receiver, IntentFilter filter, Handler handler) {