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.chunk;
  
  import com.google.android.exoplayer2.C;
  import com.google.android.exoplayer2.Format;
  import com.google.android.exoplayer2.upstream.DataSource;
  import com.google.android.exoplayer2.upstream.DataSpec;
  import com.google.android.exoplayer2.util.Assertions;
  
  /**
   * An abstract base class for {@link Chunk}s that contain media samples.
   */
  public abstract class MediaChunk extends Chunk {
  
    /** The chunk index. */
    public final long chunkIndex;
  
    /**
     * @param dataSource The source from which the data should be loaded.
     * @param dataSpec Defines the data to be loaded.
     * @param trackFormat See {@link #trackFormat}.
     * @param trackSelectionReason See {@link #trackSelectionReason}.
     * @param trackSelectionData See {@link #trackSelectionData}.
     * @param startTimeUs The start time of the media contained by the chunk, in microseconds.
     * @param endTimeUs The end time of the media contained by the chunk, in microseconds.
     * @param chunkIndex The index of the chunk.
     */
    public MediaChunk(
        DataSource dataSource,
        DataSpec dataSpec,
        Format trackFormat,
        int trackSelectionReason,
        Object trackSelectionData,
        long startTimeUs,
        long endTimeUs,
        long chunkIndex) {
      super(dataSource, dataSpec, C.DATA_TYPE_MEDIA, trackFormat, trackSelectionReason,
          trackSelectionData, startTimeUs, endTimeUs);
      Assertions.checkNotNull(trackFormat);
      this.chunkIndex = chunkIndex;
    }
  
    /** Returns the next chunk index. */
    public long getNextChunkIndex() {
      return chunkIndex + 1;
    }
  
    /**
     * Returns whether the chunk has been fully loaded.
     */
    public abstract boolean isLoadCompleted();
  
  }
  