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/*
* Copyright (C) 2017 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 org.mozilla.thirdparty.com.google.android.exoplayer2.scheduler;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.ConnectivityManager;
import android.net.Network;
import android.net.NetworkCapabilities;
import android.net.NetworkInfo;
import android.os.BatteryManager;
import android.os.Parcel;
import android.os.Parcelable;
import android.os.PowerManager;
import androidx.annotation.IntDef;
import androidx.annotation.Nullable;
import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions;
import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util;
import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
/** Defines a set of device state requirements. */
public final class Requirements implements Parcelable {
/**
* Requirement flags. Possible flag values are {@link #NETWORK}, {@link #NETWORK_UNMETERED},
* {@link #DEVICE_IDLE} and {@link #DEVICE_CHARGING}.
*/
@Documented
@Retention(RetentionPolicy.SOURCE)
@IntDef(
flag = true,
value = {NETWORK, NETWORK_UNMETERED, DEVICE_IDLE, DEVICE_CHARGING})
public @interface RequirementFlags {}
/** Requirement that the device has network connectivity. */
public static final int NETWORK = 1;
/** Requirement that the device has a network connection that is unmetered. */
public static final int NETWORK_UNMETERED = 1 << 1;
/** Requirement that the device is idle. */
public static final int DEVICE_IDLE = 1 << 2;
/** Requirement that the device is charging. */
public static final int DEVICE_CHARGING = 1 << 3;
@RequirementFlags private final int requirements;
/** @param requirements A combination of requirement flags. */
public Requirements(@RequirementFlags int requirements) {
if ((requirements & NETWORK_UNMETERED) != 0) {
// Make sure network requirement flags are consistent.
requirements |= NETWORK;
}
this.requirements = requirements;
}
/** Returns the requirements. */
@RequirementFlags
public int getRequirements() {
return requirements;
}
/** Returns whether network connectivity is required. */
public boolean isNetworkRequired() {
return (requirements & NETWORK) != 0;
}
/** Returns whether un-metered network connectivity is required. */
public boolean isUnmeteredNetworkRequired() {
return (requirements & NETWORK_UNMETERED) != 0;
}
/** Returns whether the device is required to be charging. */
public boolean isChargingRequired() {
return (requirements & DEVICE_CHARGING) != 0;
}
/** Returns whether the device is required to be idle. */
public boolean isIdleRequired() {
return (requirements & DEVICE_IDLE) != 0;
}
/**
* Returns whether the requirements are met.
*
* @param context Any context.
* @return Whether the requirements are met.
*/
public boolean checkRequirements(Context context) {
return getNotMetRequirements(context) == 0;
}
/**
* Returns requirements that are not met, or 0.
*
* @param context Any context.
* @return The requirements that are not met, or 0.
*/
@RequirementFlags
public int getNotMetRequirements(Context context) {
@RequirementFlags int notMetRequirements = getNotMetNetworkRequirements(context);
if (isChargingRequired() && !isDeviceCharging(context)) {
notMetRequirements |= DEVICE_CHARGING;
}
if (isIdleRequired() && !isDeviceIdle(context)) {
notMetRequirements |= DEVICE_IDLE;
}
return notMetRequirements;
}
@RequirementFlags
private int getNotMetNetworkRequirements(Context context) {
if (!isNetworkRequired()) {
return 0;
}
ConnectivityManager connectivityManager =
(ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = Assertions.checkNotNull(connectivityManager).getActiveNetworkInfo();
if (networkInfo == null
|| !networkInfo.isConnected()
|| !isInternetConnectivityValidated(connectivityManager)) {
return requirements & (NETWORK | NETWORK_UNMETERED);
}
if (isUnmeteredNetworkRequired() && connectivityManager.isActiveNetworkMetered()) {
return NETWORK_UNMETERED;
}
return 0;
}
private boolean isDeviceCharging(Context context) {
Intent batteryStatus =
context.registerReceiver(null, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
if (batteryStatus == null) {
return false;
}
int status = batteryStatus.getIntExtra(BatteryManager.EXTRA_STATUS, -1);
return status == BatteryManager.BATTERY_STATUS_CHARGING
|| status == BatteryManager.BATTERY_STATUS_FULL;
}
private boolean isDeviceIdle(Context context) {
PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
return Util.SDK_INT >= 23
? powerManager.isDeviceIdleMode()
: Util.SDK_INT >= 20 ? !powerManager.isInteractive() : !powerManager.isScreenOn();
}
private static boolean isInternetConnectivityValidated(ConnectivityManager connectivityManager) {
// It's possible to query NetworkCapabilities from API level 23, but RequirementsWatcher only
// fires an event to update its Requirements when NetworkCapabilities change from API level 24.
// Since Requirements won't be updated, we assume connectivity is validated on API level 23.
if (Util.SDK_INT < 24) {
return true;
}
Network activeNetwork = connectivityManager.getActiveNetwork();
if (activeNetwork == null) {
return false;
}
NetworkCapabilities networkCapabilities =
connectivityManager.getNetworkCapabilities(activeNetwork);
return networkCapabilities != null
&& networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED);
}
@Override
public boolean equals(@Nullable Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
return requirements == ((Requirements) o).requirements;
}
@Override
public int hashCode() {
return requirements;
}
// Parcelable implementation.
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(requirements);
}
public static final Parcelable.Creator<Requirements> CREATOR =
new Creator<Requirements>() {
@Override
public Requirements createFromParcel(Parcel in) {
return new Requirements(in.readInt());
}
@Override
public Requirements[] newArray(int size) {
return new Requirements[size];
}
};
}
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