content: /*
   * 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 com.google.android.exoplayer2.text.ttml;
  
  import com.google.android.exoplayer2.C;
  import com.google.android.exoplayer2.text.Cue;
  import com.google.android.exoplayer2.text.Subtitle;
  import com.google.android.exoplayer2.util.Util;
  import java.util.Collections;
  import java.util.List;
  import java.util.Map;
  
  /**
   * A representation of a TTML subtitle.
   */
  /* package */ final class TtmlSubtitle implements Subtitle {
  
    private final TtmlNode root;
    private final long[] eventTimesUs;
    private final Map<String, TtmlStyle> globalStyles;
    private final Map<String, TtmlRegion> regionMap;
  
    public TtmlSubtitle(TtmlNode root, Map<String, TtmlStyle> globalStyles,
        Map<String, TtmlRegion> regionMap) {
      this.root = root;
      this.regionMap = regionMap;
      this.globalStyles = globalStyles != null
          ? Collections.unmodifiableMap(globalStyles) : Collections.<String, TtmlStyle>emptyMap();
      this.eventTimesUs = root.getEventTimesUs();
    }
  
    @Override
    public int getNextEventTimeIndex(long timeUs) {
      int index = Util.binarySearchCeil(eventTimesUs, timeUs, false, false);
      return index < eventTimesUs.length ? index : C.INDEX_UNSET;
    }
  
    @Override
    public int getEventTimeCount() {
      return eventTimesUs.length;
    }
  
    @Override
    public long getEventTime(int index) {
      return eventTimesUs[index];
    }
  
    /* @VisibleForTesting */
    /* package */ TtmlNode getRoot() {
      return root;
    }
  
    @Override
    public List<Cue> getCues(long timeUs) {
      return root.getCues(timeUs, globalStyles, regionMap);
    }
  
    /* @VisibleForTesting */
    /* package */ Map<String, TtmlStyle> getGlobalStyles() {
      return globalStyles;
    }
  }
  