| /* |
| * 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.content.Context; |
| import android.util.Log; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.List; |
| |
| /** |
| * MediaManager provide interface to get MediaDevice list. |
| */ |
| public abstract class MediaManager { |
| |
| private static final String TAG = "MediaManager"; |
| |
| protected final Collection<MediaDeviceCallback> mCallbacks = new ArrayList<>(); |
| protected final List<MediaDevice> mMediaDevices = new ArrayList<>(); |
| |
| protected Context mContext; |
| protected Notification mNotification; |
| |
| MediaManager(Context context, Notification notification) { |
| mContext = context; |
| mNotification = notification; |
| } |
| |
| protected void registerCallback(MediaDeviceCallback callback) { |
| synchronized (mCallbacks) { |
| if (!mCallbacks.contains(callback)) { |
| mCallbacks.add(callback); |
| } |
| } |
| } |
| |
| protected void unregisterCallback(MediaDeviceCallback callback) { |
| synchronized (mCallbacks) { |
| if (mCallbacks.contains(callback)) { |
| mCallbacks.remove(callback); |
| } |
| } |
| } |
| |
| /** |
| * Start scan connected MediaDevice |
| */ |
| public abstract void startScan(); |
| |
| /** |
| * Stop scan MediaDevice |
| */ |
| public abstract void stopScan(); |
| |
| protected MediaDevice findMediaDevice(String id) { |
| for (MediaDevice mediaDevice : mMediaDevices) { |
| if (mediaDevice.getId().equals(id)) { |
| return mediaDevice; |
| } |
| } |
| Log.e(TAG, "findMediaDevice() can't found device"); |
| return null; |
| } |
| |
| protected void dispatchDeviceAdded(MediaDevice mediaDevice) { |
| synchronized (mCallbacks) { |
| for (MediaDeviceCallback callback : mCallbacks) { |
| callback.onDeviceAdded(mediaDevice); |
| } |
| } |
| } |
| |
| protected void dispatchDeviceRemoved(MediaDevice mediaDevice) { |
| synchronized (mCallbacks) { |
| for (MediaDeviceCallback callback : mCallbacks) { |
| callback.onDeviceRemoved(mediaDevice); |
| } |
| } |
| } |
| |
| protected void dispatchDeviceListAdded() { |
| synchronized (mCallbacks) { |
| for (MediaDeviceCallback callback : mCallbacks) { |
| callback.onDeviceListAdded(new ArrayList<>(mMediaDevices)); |
| } |
| } |
| } |
| |
| protected void dispatchDeviceListRemoved(List<MediaDevice> devices) { |
| synchronized (mCallbacks) { |
| for (MediaDeviceCallback callback : mCallbacks) { |
| callback.onDeviceListRemoved(devices); |
| } |
| } |
| } |
| |
| protected void dispatchConnectedDeviceChanged(String id) { |
| synchronized (mCallbacks) { |
| for (MediaDeviceCallback callback : mCallbacks) { |
| callback.onConnectedDeviceChanged(id); |
| } |
| } |
| } |
| |
| protected void dispatchDataChanged() { |
| synchronized (mCallbacks) { |
| for (MediaDeviceCallback callback : mCallbacks) { |
| callback.onDeviceAttributesChanged(); |
| } |
| } |
| } |
| |
| /** |
| * Callback for notifying device is added, removed and attributes changed. |
| */ |
| public interface MediaDeviceCallback { |
| /** |
| * Callback for notifying MediaDevice is added. |
| * |
| * @param device the MediaDevice |
| */ |
| void onDeviceAdded(MediaDevice device); |
| |
| /** |
| * Callback for notifying MediaDevice list is added. |
| * |
| * @param devices the MediaDevice list |
| */ |
| void onDeviceListAdded(List<MediaDevice> devices); |
| |
| /** |
| * Callback for notifying MediaDevice is removed. |
| * |
| * @param device the MediaDevice |
| */ |
| void onDeviceRemoved(MediaDevice device); |
| |
| /** |
| * Callback for notifying MediaDevice list is removed. |
| * |
| * @param devices the MediaDevice list |
| */ |
| void onDeviceListRemoved(List<MediaDevice> devices); |
| |
| /** |
| * Callback for notifying connected MediaDevice is changed. |
| * |
| * @param id the id of MediaDevice |
| */ |
| void onConnectedDeviceChanged(String id); |
| |
| /** |
| * Callback for notifying that MediaDevice attributes |
| * (e.g: device name, connection state, subtitle) is changed. |
| */ |
| void onDeviceAttributesChanged(); |
| } |
| } |