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/*
* 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.text.ssa;
import org.mozilla.thirdparty.com.google.android.exoplayer2.C;
import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Cue;
import org.mozilla.thirdparty.com.google.android.exoplayer2.text.Subtitle;
import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Assertions;
import org.mozilla.thirdparty.com.google.android.exoplayer2.util.Util;
import java.util.Collections;
import java.util.List;
/**
* A representation of an SSA/ASS subtitle.
*/
/* package */ final class SsaSubtitle implements Subtitle {
private final List<List<Cue>> cues;
private final List<Long> cueTimesUs;
/**
* @param cues The cues in the subtitle.
* @param cueTimesUs The cue times, in microseconds.
*/
public SsaSubtitle(List<List<Cue>> cues, List<Long> cueTimesUs) {
this.cues = cues;
this.cueTimesUs = cueTimesUs;
}
@Override
public int getNextEventTimeIndex(long timeUs) {
int index = Util.binarySearchCeil(cueTimesUs, timeUs, false, false);
return index < cueTimesUs.size() ? index : C.INDEX_UNSET;
}
@Override
public int getEventTimeCount() {
return cueTimesUs.size();
}
@Override
public long getEventTime(int index) {
Assertions.checkArgument(index >= 0);
Assertions.checkArgument(index < cueTimesUs.size());
return cueTimesUs.get(index);
}
@Override
public List<Cue> getCues(long timeUs) {
int index = Util.binarySearchFloor(cueTimesUs, timeUs, true, false);
if (index == -1) {
// timeUs is earlier than the start of the first cue.
return Collections.emptyList();
} else {
return cues.get(index);
}
}
}
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