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.source.dash;
  
  import com.google.android.exoplayer2.extractor.ChunkIndex;
  import com.google.android.exoplayer2.source.dash.manifest.RangedUri;
  
  /**
   * An implementation of {@link DashSegmentIndex} that wraps a {@link ChunkIndex} parsed from a
   * media stream.
   */
  public final class DashWrappingSegmentIndex implements DashSegmentIndex {
  
    private final ChunkIndex chunkIndex;
  
    /**
     * @param chunkIndex The {@link ChunkIndex} to wrap.
     */
    public DashWrappingSegmentIndex(ChunkIndex chunkIndex) {
      this.chunkIndex = chunkIndex;
    }
  
    @Override
    public long getFirstSegmentNum() {
      return 0;
    }
  
    @Override
    public int getSegmentCount(long periodDurationUs) {
      return chunkIndex.length;
    }
  
    @Override
    public long getTimeUs(long segmentNum) {
      return chunkIndex.timesUs[(int) segmentNum];
    }
  
    @Override
    public long getDurationUs(long segmentNum, long periodDurationUs) {
      return chunkIndex.durationsUs[(int) segmentNum];
    }
  
    @Override
    public RangedUri getSegmentUrl(long segmentNum) {
      return new RangedUri(
          null, chunkIndex.offsets[(int) segmentNum], chunkIndex.sizes[(int) segmentNum]);
    }
  
    @Override
    public long getSegmentNum(long timeUs, long periodDurationUs) {
      return chunkIndex.getChunkIndex(timeUs);
    }
  
    @Override
    public boolean isExplicit() {
      return true;
    }
  
  }
  