Add channel mode preference controller for Bluetooth developer option

Bug: 142227996
Test: make -j50 RunSettingsRoboTests
Change-Id: Ibf2238ee8b5d3a9d91ea40fea16aa44583a22cc0

1 files changed, 121 insertions, 0 deletions

diff --git a/src/com/android/settings/development/bluetooth/BluetoothChannelModeDialogPreferenceController.java b/src/com/android/settings/development/bluetooth/BluetoothChannelModeDialogPreferenceController.java
new file mode 100644
index 0000000000..d156abde6b
--- /dev/null
+++ b/src/com/android/settings/development/bluetooth/BluetoothChannelModeDialogPreferenceController.java
@@ -0,0 +1,121 @@
+/*
+ * Copyright (C) 2019 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.bluetooth;
+
+import android.bluetooth.BluetoothCodecConfig;
+import android.content.Context;
+import android.util.Log;
+
+import androidx.annotation.VisibleForTesting;
+import androidx.preference.PreferenceScreen;
+
+import com.android.settings.development.BluetoothA2dpConfigStore;
+import com.android.settingslib.core.lifecycle.Lifecycle;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Dialog preference controller to set the Bluetooth A2DP config of audio channel mode
+ */
+public class BluetoothChannelModeDialogPreferenceController extends
+        AbstractBluetoothDialogPreferenceController {
+
+    private static final String KEY = "bluetooth_channel_mode_settings";
+    private static final String TAG = "BtChannelModeCtr";
+
+    public BluetoothChannelModeDialogPreferenceController(Context context, Lifecycle lifecycle,
+                                                          BluetoothA2dpConfigStore store) {
+        super(context, lifecycle, store);
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return KEY;
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        ((BaseBluetoothDialogPreference) mPreference).setCallback(this);
+    }
+
+    @Override
+    protected void writeConfigurationValues(final int index) {
+        int channelModeValue = BluetoothCodecConfig.CHANNEL_MODE_NONE; // default
+        switch (index) {
+            case 0:
+                final BluetoothCodecConfig currentConfig = getCurrentCodecConfig();
+                if (currentConfig != null) {
+                    channelModeValue = getHighestChannelMode(getSelectableByCodecType(
+                            currentConfig.getCodecType()));
+                }
+                break;
+            case 1:
+                channelModeValue = BluetoothCodecConfig.CHANNEL_MODE_MONO;
+                break;
+            case 2:
+                channelModeValue = BluetoothCodecConfig.CHANNEL_MODE_STEREO;
+                break;
+            default:
+                break;
+        }
+        mBluetoothA2dpConfigStore.setChannelMode(channelModeValue);
+    }
+
+    @Override
+    protected int getCurrentIndexByConfig(BluetoothCodecConfig config) {
+        if (config == null) {
+            Log.e(TAG, "Unable to get current config index. Config is null.");
+        }
+        return convertCfgToBtnIndex(config.getChannelMode());
+    }
+
+    @Override
+    public List<Integer> getSelectableIndex() {
+        List<Integer> selectableIndex = new ArrayList<>();
+        selectableIndex.add(getDefaultIndex());
+        final BluetoothCodecConfig currentConfig = getCurrentCodecConfig();
+        if (currentConfig != null) {
+            final int configs =
+                    getSelectableByCodecType(currentConfig.getCodecType()).getChannelMode();
+            for (int i = 0; i < CHANNEL_MODES.length; i++) {
+                if ((configs & CHANNEL_MODES[i]) != 0) {
+                    selectableIndex.add(convertCfgToBtnIndex(CHANNEL_MODES[i]));
+                }
+            }
+        }
+        return selectableIndex;
+    }
+
+    @VisibleForTesting
+    int convertCfgToBtnIndex(int config) {
+        int index = getDefaultIndex();
+        switch (config) {
+            case BluetoothCodecConfig.CHANNEL_MODE_MONO:
+                index = 1;
+                break;
+            case BluetoothCodecConfig.CHANNEL_MODE_STEREO:
+                index = 2;
+                break;
+            default:
+                Log.e(TAG, "Unsupported config:" + config);
+                break;
+        }
+        return index;
+    }
+}