1 files changed, 66 insertions, 0 deletions
diff --git a/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/WidevineUtil.java b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/WidevineUtil.java
new file mode 100644
index 0000000000..67539bef39
--- /dev/null
+++ b/mobile/android/exoplayer2/src/main/java/org/mozilla/thirdparty/com/google/android/exoplayer2/drm/WidevineUtil.java
@@ -0,0 +1,66 @@
+/*
+ * 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.drm;
+
+import android.util.Pair;
+import androidx.annotation.Nullable;
+import org.mozilla.thirdparty.com.google.android.exoplayer2.C;
+import java.util.Map;
+
+/**
+ * Utility methods for Widevine.
+ */
+public final class WidevineUtil {
+
+  /** Widevine specific key status field name for the remaining license duration, in seconds. */
+  public static final String PROPERTY_LICENSE_DURATION_REMAINING = "LicenseDurationRemaining";
+  /** Widevine specific key status field name for the remaining playback duration, in seconds. */
+  public static final String PROPERTY_PLAYBACK_DURATION_REMAINING = "PlaybackDurationRemaining";
+
+  private WidevineUtil() {}
+
+  /**
+   * Returns license and playback durations remaining in seconds.
+   *
+   * @param drmSession The drm session to query.
+   * @return A {@link Pair} consisting of the remaining license and playback durations in seconds,
+   *     or null if called before the session has been opened or after it's been released.
+   */
+  public static @Nullable Pair<Long, Long> getLicenseDurationRemainingSec(
+      DrmSession<?> drmSession) {
+    Map<String, String> keyStatus = drmSession.queryKeyStatus();
+    if (keyStatus == null) {
+      return null;
+    }
+    return new Pair<>(getDurationRemainingSec(keyStatus, PROPERTY_LICENSE_DURATION_REMAINING),
+        getDurationRemainingSec(keyStatus, PROPERTY_PLAYBACK_DURATION_REMAINING));
+  }
+
+  private static long getDurationRemainingSec(Map<String, String> keyStatus, String property) {
+    if (keyStatus != null) {
+      try {
+        String value = keyStatus.get(property);
+        if (value != null) {
+          return Long.parseLong(value);
+        }
+      } catch (NumberFormatException e) {
+        // do nothing.
+      }
+    }
+    return C.TIME_UNSET;
+  }
+
+}