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/*
* 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;
import java.util.concurrent.CopyOnWriteArrayList;
/**
* MediaManager provide interface to get MediaDevice list.
*/
public abstract class MediaManager {
private static final String TAG = "MediaManager";
protected final Collection<MediaDeviceCallback> mCallbacks = new CopyOnWriteArrayList<>();
protected final List<MediaDevice> mMediaDevices = new CopyOnWriteArrayList<>();
protected Context mContext;
protected Notification mNotification;
MediaManager(Context context, Notification notification) {
mContext = context;
mNotification = notification;
}
protected void registerCallback(MediaDeviceCallback callback) {
if (!mCallbacks.contains(callback)) {
mCallbacks.add(callback);
}
}
protected void unregisterCallback(MediaDeviceCallback callback) {
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) {
for (MediaDeviceCallback callback : getCallbacks()) {
callback.onDeviceAdded(mediaDevice);
}
}
protected void dispatchDeviceRemoved(MediaDevice mediaDevice) {
for (MediaDeviceCallback callback : getCallbacks()) {
callback.onDeviceRemoved(mediaDevice);
}
}
protected void dispatchDeviceListAdded() {
for (MediaDeviceCallback callback : getCallbacks()) {
callback.onDeviceListAdded(new ArrayList<>(mMediaDevices));
}
}
protected void dispatchDeviceListRemoved(List<MediaDevice> devices) {
for (MediaDeviceCallback callback : getCallbacks()) {
callback.onDeviceListRemoved(devices);
}
}
protected void dispatchConnectedDeviceChanged(String id) {
for (MediaDeviceCallback callback : getCallbacks()) {
callback.onConnectedDeviceChanged(id);
}
}
protected void dispatchDataChanged() {
for (MediaDeviceCallback callback : getCallbacks()) {
callback.onDeviceAttributesChanged();
}
}
protected void dispatchOnRequestFailed(int reason) {
for (MediaDeviceCallback callback : getCallbacks()) {
callback.onRequestFailed(reason);
}
}
private Collection<MediaDeviceCallback> getCallbacks() {
return new CopyOnWriteArrayList<>(mCallbacks);
}
/**
* 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();
/**
* Callback for notifying that transferring is failed.
*
* @param reason the reason that the request has failed. Can be one of followings:
* {@link android.media.MediaRoute2ProviderService#REASON_UNKNOWN_ERROR},
* {@link android.media.MediaRoute2ProviderService#REASON_REJECTED},
* {@link android.media.MediaRoute2ProviderService#REASON_NETWORK_ERROR},
* {@link android.media.MediaRoute2ProviderService#REASON_ROUTE_NOT_AVAILABLE},
* {@link android.media.MediaRoute2ProviderService#REASON_INVALID_COMMAND},
*/
void onRequestFailed(int reason);
}
}
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