Merge changes I96776484,Ic2ea10d9 into main

* changes:
  Add BluetoothLeAudioModePreferenceControllerTest
  Change the switcher to switch LE audio mode with broadcast

src/com/android/settings/development/BluetoothLeAudioModePreferenceController.java

@@ -0,0 +1,139 @@
+/*
+ * Copyright 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.development;
+
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothManager;
+import android.bluetooth.BluetoothStatusCodes;
+import android.content.Context;
+import android.os.SystemProperties;
+import android.sysprop.BluetoothProperties;
+import android.text.TextUtils;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.annotation.VisibleForTesting;
+import androidx.preference.ListPreference;
+import androidx.preference.Preference;
+
+import com.android.settings.R;
+import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settingslib.development.DeveloperOptionsPreferenceController;
+
+
+/**
+ * Preference controller to control Bluetooth LE audio mode
+ */
+public class BluetoothLeAudioModePreferenceController
+        extends DeveloperOptionsPreferenceController
+        implements Preference.OnPreferenceChangeListener, PreferenceControllerMixin {
+
+    private static final String PREFERENCE_KEY = "bluetooth_leaudio_mode";
+
+    static final String LE_AUDIO_DYNAMIC_SWITCHER_MODE_PROPERTY =
+            "persist.bluetooth.leaudio_dynamic_switcher.mode";
+
+    @Nullable private final DevelopmentSettingsDashboardFragment mFragment;
+
+    private final String[] mListValues;
+    private final String[] mListSummaries;
+    @VisibleForTesting
+    @Nullable String mNewMode;
+    @VisibleForTesting
+    BluetoothAdapter mBluetoothAdapter;
+
+    boolean mChanged = false;
+
+    public BluetoothLeAudioModePreferenceController(@NonNull Context context,
+            @Nullable DevelopmentSettingsDashboardFragment fragment) {
+        super(context);
+        mFragment = fragment;
+        mBluetoothAdapter = context.getSystemService(BluetoothManager.class).getAdapter();
+
+        mListValues = context.getResources().getStringArray(R.array.bluetooth_leaudio_mode_values);
+        mListSummaries = context.getResources().getStringArray(R.array.bluetooth_leaudio_mode);
+    }
+
+    @Override
+    @NonNull public String getPreferenceKey() {
+        return PREFERENCE_KEY;
+    }
+
+    @Override
+    public boolean isAvailable() {
+        return BluetoothProperties.isProfileBapBroadcastSourceEnabled().orElse(false);
+    }
+
+    @Override
+    public boolean onPreferenceChange(@NonNull Preference preference, Object newValue) {
+        if (mFragment == null) {
+            return false;
+        }
+
+        BluetoothRebootDialog.show(mFragment);
+        mChanged = true;
+        mNewMode = newValue.toString();
+        return false;
+    }
+
+    @Override
+    public void updateState(@NonNull Preference preference) {
+        if (mBluetoothAdapter == null) {
+            return;
+        }
+
+        if (mBluetoothAdapter.isLeAudioBroadcastSourceSupported()
+                == BluetoothStatusCodes.FEATURE_SUPPORTED) {
+            SystemProperties.set(LE_AUDIO_DYNAMIC_SWITCHER_MODE_PROPERTY, "broadcast");
+        } else if (mBluetoothAdapter.isLeAudioSupported()
+                == BluetoothStatusCodes.FEATURE_SUPPORTED) {
+            SystemProperties.set(LE_AUDIO_DYNAMIC_SWITCHER_MODE_PROPERTY, "unicast");
+        } else {
+            SystemProperties.set(LE_AUDIO_DYNAMIC_SWITCHER_MODE_PROPERTY, "disabled");
+        }
+
+        final String currentValue = SystemProperties.get(LE_AUDIO_DYNAMIC_SWITCHER_MODE_PROPERTY);
+        int index = 0;
+        for (int i = 0; i < mListValues.length; i++) {
+            if (TextUtils.equals(currentValue, mListValues[i])) {
+                index = i;
+                break;
+            }
+        }
+
+        final ListPreference listPreference = (ListPreference) preference;
+        listPreference.setValue(mListValues[index]);
+        listPreference.setSummary(mListSummaries[index]);
+    }
+
+    /**
+     * Called when the RebootDialog confirm is clicked.
+     */
+    public void onRebootDialogConfirmed() {
+        if (!mChanged) {
+            return;
+        }
+        SystemProperties.set(LE_AUDIO_DYNAMIC_SWITCHER_MODE_PROPERTY, mNewMode);
+    }
+
+    /**
+     * Called when the RebootDialog cancel is clicked.
+     */
+    public void onRebootDialogCanceled() {
+        mChanged = false;
+    }
+}

src/com/android/settings/development/BluetoothLeAudioPreferenceController.java

@@ -21,6 +21,7 @@ import android.bluetooth.BluetoothManager;
 import android.bluetooth.BluetoothStatusCodes;
 import android.content.Context;
 import android.os.SystemProperties;
+import android.sysprop.BluetoothProperties;
 
 import androidx.annotation.VisibleForTesting;
 import androidx.preference.Preference;
@@ -64,6 +65,12 @@ public class BluetoothLeAudioPreferenceController
         return PREFERENCE_KEY;
     }
 
+    @Override
+    public boolean isAvailable() {
+        return BluetoothProperties.isProfileBapUnicastClientEnabled().orElse(false)
+                && !BluetoothProperties.isProfileBapBroadcastSourceEnabled().orElse(false);
+    }
+
     @Override
     public boolean onPreferenceChange(Preference preference, Object newValue) {
         BluetoothRebootDialog.show(mFragment);

src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java

@@ -454,6 +454,11 @@ public class DevelopmentSettingsDashboardFragment extends RestrictedDashboardFra
                 getDevelopmentOptionsController(
                         BluetoothLeAudioPreferenceController.class);
         leAudioFeatureController.onRebootDialogConfirmed();
+
+        final BluetoothLeAudioModePreferenceController leAudioModeController =
+                getDevelopmentOptionsController(
+                        BluetoothLeAudioModePreferenceController.class);
+        leAudioModeController.onRebootDialogConfirmed();
     }
 
     @Override
@@ -471,6 +476,11 @@ public class DevelopmentSettingsDashboardFragment extends RestrictedDashboardFra
                 getDevelopmentOptionsController(
                         BluetoothLeAudioPreferenceController.class);
         leAudioFeatureController.onRebootDialogCanceled();
+
+        final BluetoothLeAudioModePreferenceController leAudioModeController =
+                getDevelopmentOptionsController(
+                        BluetoothLeAudioModePreferenceController.class);
+        leAudioModeController.onRebootDialogCanceled();
     }
 
     @Override
@@ -670,6 +680,7 @@ public class DevelopmentSettingsDashboardFragment extends RestrictedDashboardFra
         controllers.add(new BluetoothAvrcpVersionPreferenceController(context));
         controllers.add(new BluetoothMapVersionPreferenceController(context));
         controllers.add(new BluetoothLeAudioPreferenceController(context, fragment));
+        controllers.add(new BluetoothLeAudioModePreferenceController(context, fragment));
         controllers.add(new BluetoothLeAudioDeviceDetailsPreferenceController(context));
         controllers.add(new BluetoothLeAudioAllowListPreferenceController(context, fragment));
         controllers.add(new BluetoothA2dpHwOffloadPreferenceController(context, fragment));