1 files changed, 223 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/scheduler/Requirements.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/scheduler/Requirements.java
new file mode 100644
index 0000000000..9ef8fdb3f6
--- /dev/null
+++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/scheduler/Requirements.java
@@ -0,0 +1,223 @@
+/*
+ * 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];
+        }
+      };
+}