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/*
* Copyright (C) 2020 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;
import android.content.Context;
import android.net.wifi.WifiManager;
import android.net.wifi.WifiManager.WifiLock;
import androidx.annotation.Nullable;
import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Log;
/**
* Handles a {@link WifiLock}
*
* <p>The handling of wifi locks requires the {@link android.Manifest.permission#WAKE_LOCK}
* permission.
*/
/* package */ final class WifiLockManager {
private static final String TAG = "WifiLockManager";
private static final String WIFI_LOCK_TAG = "ExoPlayer:WifiLockManager";
@Nullable private final WifiManager wifiManager;
@Nullable private WifiLock wifiLock;
private boolean enabled;
private boolean stayAwake;
public WifiLockManager(Context context) {
wifiManager =
(WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE);
}
/**
* Sets whether to enable the usage of a {@link WifiLock}.
*
* <p>By default, wifi lock handling is not enabled. Enabling will acquire the wifi lock if
* necessary. Disabling will release the wifi lock if held.
*
* <p>Enabling {@link WifiLock} requires the {@link android.Manifest.permission#WAKE_LOCK}.
*
* @param enabled True if the player should handle a {@link WifiLock}.
*/
public void setEnabled(boolean enabled) {
if (enabled && wifiLock == null) {
if (wifiManager == null) {
Log.w(TAG, "WifiManager is null, therefore not creating the WifiLock.");
return;
}
wifiLock = wifiManager.createWifiLock(WifiManager.WIFI_MODE_FULL_HIGH_PERF, WIFI_LOCK_TAG);
wifiLock.setReferenceCounted(false);
}
this.enabled = enabled;
updateWifiLock();
}
/**
* Sets whether to acquire or release the {@link WifiLock}.
*
* <p>The wifi lock will not be acquired unless handling has been enabled through {@link
* #setEnabled(boolean)}.
*
* @param stayAwake True if the player should acquire the {@link WifiLock}. False if it should
* release.
*/
public void setStayAwake(boolean stayAwake) {
this.stayAwake = stayAwake;
updateWifiLock();
}
private void updateWifiLock() {
if (wifiLock == null) {
return;
}
if (enabled && stayAwake) {
wifiLock.acquire();
} else {
wifiLock.release();
}
}
}
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