| /* |
| * Copyright 2018 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.settingslib.media; |
| |
| import android.app.Notification; |
| import android.bluetooth.BluetoothProfile; |
| import android.content.Context; |
| import android.util.Log; |
| |
| import androidx.annotation.IntDef; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.settingslib.bluetooth.BluetoothCallback; |
| import com.android.settingslib.bluetooth.CachedBluetoothDevice; |
| import com.android.settingslib.bluetooth.LocalBluetoothManager; |
| |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.Comparator; |
| import java.util.List; |
| |
| /** |
| * LocalMediaManager provide interface to get MediaDevice list and transfer media to MediaDevice. |
| */ |
| public class LocalMediaManager implements BluetoothCallback { |
| private static final Comparator<MediaDevice> COMPARATOR = Comparator.naturalOrder(); |
| private static final String TAG = "LocalMediaManager"; |
| |
| @Retention(RetentionPolicy.SOURCE) |
| @IntDef({MediaDeviceState.STATE_CONNECTED, |
| MediaDeviceState.STATE_CONNECTING, |
| MediaDeviceState.STATE_DISCONNECTED}) |
| public @interface MediaDeviceState { |
| int STATE_CONNECTED = 1; |
| int STATE_CONNECTING = 2; |
| int STATE_DISCONNECTED = 3; |
| } |
| |
| private final Collection<DeviceCallback> mCallbacks = new ArrayList<>(); |
| @VisibleForTesting |
| final MediaDeviceCallback mMediaDeviceCallback = new MediaDeviceCallback(); |
| |
| private Context mContext; |
| private BluetoothMediaManager mBluetoothMediaManager; |
| private LocalBluetoothManager mLocalBluetoothManager; |
| private InfoMediaManager mInfoMediaManager; |
| private String mPackageName; |
| |
| @VisibleForTesting |
| List<MediaDevice> mMediaDevices = new ArrayList<>(); |
| @VisibleForTesting |
| MediaDevice mPhoneDevice; |
| @VisibleForTesting |
| MediaDevice mCurrentConnectedDevice; |
| |
| /** |
| * Register to start receiving callbacks for MediaDevice events. |
| */ |
| public void registerCallback(DeviceCallback callback) { |
| synchronized (mCallbacks) { |
| mCallbacks.add(callback); |
| } |
| } |
| |
| /** |
| * Unregister to stop receiving callbacks for MediaDevice events |
| */ |
| public void unregisterCallback(DeviceCallback callback) { |
| synchronized (mCallbacks) { |
| mCallbacks.remove(callback); |
| } |
| } |
| |
| public LocalMediaManager(Context context, String packageName, Notification notification) { |
| mContext = context; |
| mPackageName = packageName; |
| mLocalBluetoothManager = |
| LocalBluetoothManager.getInstance(context, /* onInitCallback= */ null); |
| if (mLocalBluetoothManager == null) { |
| Log.e(TAG, "Bluetooth is not supported on this device"); |
| return; |
| } |
| |
| mBluetoothMediaManager = |
| new BluetoothMediaManager(context, mLocalBluetoothManager, notification); |
| mInfoMediaManager = new InfoMediaManager(context, packageName, notification); |
| } |
| |
| @VisibleForTesting |
| LocalMediaManager(Context context, LocalBluetoothManager localBluetoothManager, |
| BluetoothMediaManager bluetoothMediaManager, InfoMediaManager infoMediaManager) { |
| mContext = context; |
| mLocalBluetoothManager = localBluetoothManager; |
| mBluetoothMediaManager = bluetoothMediaManager; |
| mInfoMediaManager = infoMediaManager; |
| } |
| |
| /** |
| * Connect the MediaDevice to transfer media |
| * @param connectDevice the MediaDevice |
| */ |
| public void connectDevice(MediaDevice connectDevice) { |
| final MediaDevice device = getMediaDeviceById(mMediaDevices, connectDevice.getId()); |
| if (device instanceof BluetoothMediaDevice) { |
| final CachedBluetoothDevice cachedDevice = |
| ((BluetoothMediaDevice) device).getCachedDevice(); |
| if (!cachedDevice.isConnected() && !cachedDevice.isBusy()) { |
| cachedDevice.connect(); |
| return; |
| } |
| } |
| |
| if (device == mCurrentConnectedDevice) { |
| Log.d(TAG, "connectDevice() this device all ready connected! : " + device.getName()); |
| return; |
| } |
| |
| if (mCurrentConnectedDevice != null) { |
| mCurrentConnectedDevice.disconnect(); |
| } |
| |
| final boolean isConnected = device.connect(); |
| if (isConnected) { |
| mCurrentConnectedDevice = device; |
| } |
| |
| final int state = isConnected |
| ? MediaDeviceState.STATE_CONNECTED |
| : MediaDeviceState.STATE_DISCONNECTED; |
| dispatchSelectedDeviceStateChanged(device, state); |
| } |
| |
| void dispatchSelectedDeviceStateChanged(MediaDevice device, @MediaDeviceState int state) { |
| synchronized (mCallbacks) { |
| for (DeviceCallback callback : mCallbacks) { |
| callback.onSelectedDeviceStateChanged(device, state); |
| } |
| } |
| } |
| |
| /** |
| * Start scan connected MediaDevice |
| */ |
| public void startScan() { |
| mMediaDevices.clear(); |
| mBluetoothMediaManager.registerCallback(mMediaDeviceCallback); |
| mBluetoothMediaManager.startScan(); |
| mInfoMediaManager.registerCallback(mMediaDeviceCallback); |
| mInfoMediaManager.startScan(); |
| } |
| |
| private void addPhoneDeviceIfNecessary() { |
| // add phone device to list if there have any Bluetooth device and cast device. |
| if (mMediaDevices.size() > 0 && !mMediaDevices.contains(mPhoneDevice)) { |
| if (mPhoneDevice == null) { |
| mPhoneDevice = new PhoneMediaDevice(mContext, mLocalBluetoothManager); |
| } |
| mMediaDevices.add(mPhoneDevice); |
| } |
| } |
| |
| private void removePhoneMediaDeviceIfNecessary() { |
| // if PhoneMediaDevice is the last item in the list, remove it. |
| if (mMediaDevices.size() == 1 && mMediaDevices.contains(mPhoneDevice)) { |
| mMediaDevices.clear(); |
| } |
| } |
| |
| void dispatchDeviceListUpdate() { |
| synchronized (mCallbacks) { |
| Collections.sort(mMediaDevices, COMPARATOR); |
| for (DeviceCallback callback : mCallbacks) { |
| callback.onDeviceListUpdate(new ArrayList<>(mMediaDevices)); |
| } |
| } |
| } |
| |
| void dispatchDeviceAttributesChanged() { |
| synchronized (mCallbacks) { |
| for (DeviceCallback callback : mCallbacks) { |
| callback.onDeviceAttributesChanged(); |
| } |
| } |
| } |
| |
| /** |
| * Stop scan MediaDevice |
| */ |
| public void stopScan() { |
| mBluetoothMediaManager.unregisterCallback(mMediaDeviceCallback); |
| mBluetoothMediaManager.stopScan(); |
| mInfoMediaManager.unregisterCallback(mMediaDeviceCallback); |
| mInfoMediaManager.stopScan(); |
| } |
| |
| /** |
| * Find the MediaDevice through id. |
| * |
| * @param devices the list of MediaDevice |
| * @param id the unique id of MediaDevice |
| * @return MediaDevice |
| */ |
| public MediaDevice getMediaDeviceById(List<MediaDevice> devices, String id) { |
| for (MediaDevice mediaDevice : devices) { |
| if (mediaDevice.getId().equals(id)) { |
| return mediaDevice; |
| } |
| } |
| Log.i(TAG, "getMediaDeviceById() can't found device"); |
| return null; |
| } |
| |
| /** |
| * Find the current connected MediaDevice. |
| * |
| * @return MediaDevice |
| */ |
| public MediaDevice getCurrentConnectedDevice() { |
| return mCurrentConnectedDevice; |
| } |
| |
| private MediaDevice updateCurrentConnectedDevice() { |
| for (MediaDevice device : mMediaDevices) { |
| if (device instanceof BluetoothMediaDevice) { |
| if (isConnected(((BluetoothMediaDevice) device).getCachedDevice())) { |
| return device; |
| } |
| } |
| } |
| return mMediaDevices.contains(mPhoneDevice) ? mPhoneDevice : null; |
| } |
| |
| private boolean isConnected(CachedBluetoothDevice device) { |
| return device.isActiveDevice(BluetoothProfile.A2DP) |
| || device.isActiveDevice(BluetoothProfile.HEARING_AID); |
| } |
| |
| class MediaDeviceCallback implements MediaManager.MediaDeviceCallback { |
| @Override |
| public void onDeviceAdded(MediaDevice device) { |
| if (!mMediaDevices.contains(device)) { |
| mMediaDevices.add(device); |
| addPhoneDeviceIfNecessary(); |
| dispatchDeviceListUpdate(); |
| } |
| } |
| |
| @Override |
| public void onDeviceListAdded(List<MediaDevice> devices) { |
| for (MediaDevice device : devices) { |
| if (getMediaDeviceById(mMediaDevices, device.getId()) == null) { |
| mMediaDevices.add(device); |
| } |
| } |
| addPhoneDeviceIfNecessary(); |
| final MediaDevice infoMediaDevice = mInfoMediaManager.getCurrentConnectedDevice(); |
| mCurrentConnectedDevice = infoMediaDevice != null |
| ? infoMediaDevice : updateCurrentConnectedDevice(); |
| updatePhoneMediaDeviceSummary(); |
| dispatchDeviceListUpdate(); |
| } |
| |
| private void updatePhoneMediaDeviceSummary() { |
| if (mPhoneDevice != null) { |
| ((PhoneMediaDevice) mPhoneDevice) |
| .updateSummary(mCurrentConnectedDevice == mPhoneDevice); |
| } |
| } |
| |
| @Override |
| public void onDeviceRemoved(MediaDevice device) { |
| if (mMediaDevices.contains(device)) { |
| mMediaDevices.remove(device); |
| removePhoneMediaDeviceIfNecessary(); |
| dispatchDeviceListUpdate(); |
| } |
| } |
| |
| @Override |
| public void onDeviceListRemoved(List<MediaDevice> devices) { |
| mMediaDevices.removeAll(devices); |
| removePhoneMediaDeviceIfNecessary(); |
| dispatchDeviceListUpdate(); |
| } |
| |
| @Override |
| public void onConnectedDeviceChanged(String id) { |
| final MediaDevice connectDevice = getMediaDeviceById(mMediaDevices, id); |
| |
| if (connectDevice == mCurrentConnectedDevice) { |
| Log.d(TAG, "onConnectedDeviceChanged() this device all ready connected!"); |
| return; |
| } |
| mCurrentConnectedDevice = connectDevice; |
| updatePhoneMediaDeviceSummary(); |
| dispatchDeviceAttributesChanged(); |
| } |
| |
| @Override |
| public void onDeviceAttributesChanged() { |
| dispatchDeviceAttributesChanged(); |
| } |
| } |
| |
| |
| /** |
| * Callback for notifying device information updating |
| */ |
| public interface DeviceCallback { |
| /** |
| * Callback for notifying device list updated. |
| * |
| * @param devices MediaDevice list |
| */ |
| default void onDeviceListUpdate(List<MediaDevice> devices) {}; |
| |
| /** |
| * Callback for notifying the connected device is changed. |
| * |
| * @param device the changed connected MediaDevice |
| * @param state the current MediaDevice state, the possible values are: |
| * {@link MediaDeviceState#STATE_CONNECTED}, |
| * {@link MediaDeviceState#STATE_CONNECTING}, |
| * {@link MediaDeviceState#STATE_DISCONNECTED} |
| */ |
| default void onSelectedDeviceStateChanged(MediaDevice device, |
| @MediaDeviceState int state) {}; |
| |
| /** |
| * Callback for notifying the device attributes is changed. |
| */ |
| default void onDeviceAttributesChanged() {}; |
| } |
| } |