1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package org.mozilla.thirdparty.com.google.android.exoplayer2.drm; 17 18 import android.util.Pair; 19 import androidx.annotation.Nullable; 20 import org.mozilla.thirdparty.com.google.android.exoplayer2.C; 21 import java.util.Map; 22 23 /** 24 * Utility methods for Widevine. 25 */ 26 public final class WidevineUtil { 27 28 /** Widevine specific key status field name for the remaining license duration, in seconds. */ 29 public static final String PROPERTY_LICENSE_DURATION_REMAINING = "LicenseDurationRemaining"; 30 /** Widevine specific key status field name for the remaining playback duration, in seconds. */ 31 public static final String PROPERTY_PLAYBACK_DURATION_REMAINING = "PlaybackDurationRemaining"; 32 WidevineUtil()33 private WidevineUtil() {} 34 35 /** 36 * Returns license and playback durations remaining in seconds. 37 * 38 * @param drmSession The drm session to query. 39 * @return A {@link Pair} consisting of the remaining license and playback durations in seconds, 40 * or null if called before the session has been opened or after it's been released. 41 */ getLicenseDurationRemainingSec( DrmSession<?> drmSession)42 public static @Nullable Pair<Long, Long> getLicenseDurationRemainingSec( 43 DrmSession<?> drmSession) { 44 Map<String, String> keyStatus = drmSession.queryKeyStatus(); 45 if (keyStatus == null) { 46 return null; 47 } 48 return new Pair<>(getDurationRemainingSec(keyStatus, PROPERTY_LICENSE_DURATION_REMAINING), 49 getDurationRemainingSec(keyStatus, PROPERTY_PLAYBACK_DURATION_REMAINING)); 50 } 51 getDurationRemainingSec(Map<String, String> keyStatus, String property)52 private static long getDurationRemainingSec(Map<String, String> keyStatus, String property) { 53 if (keyStatus != null) { 54 try { 55 String value = keyStatus.get(property); 56 if (value != null) { 57 return Long.parseLong(value); 58 } 59 } catch (NumberFormatException e) { 60 // do nothing. 61 } 62 } 63 return C.TIME_UNSET; 64 } 65 66 } 67