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/*
* Copyright (C) 2016 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.text;
import org.mozilla.thirdparty.com.google.android.exoplayer2.C;
import java.util.List;
/**
* A subtitle consisting of timed {@link Cue}s.
*/
public interface Subtitle {
/**
* Returns the index of the first event that occurs after a given time (exclusive).
*
* @param timeUs The time in microseconds.
* @return The index of the next event, or {@link C#INDEX_UNSET} if there are no events after the
* specified time.
*/
int getNextEventTimeIndex(long timeUs);
/**
* Returns the number of event times, where events are defined as points in time at which the cues
* returned by {@link #getCues(long)} changes.
*
* @return The number of event times.
*/
int getEventTimeCount();
/**
* Returns the event time at a specified index.
*
* @param index The index of the event time to obtain.
* @return The event time in microseconds.
*/
long getEventTime(int index);
/**
* Retrieve the cues that should be displayed at a given time.
*
* @param timeUs The time in microseconds.
* @return A list of cues that should be displayed, possibly empty.
*/
List<Cue> getCues(long timeUs);
}
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