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.extractor;
  
  import android.net.Uri;
  import java.util.List;
  import java.util.Map;
  
  /** Factory for arrays of {@link Extractor} instances. */
  public interface ExtractorsFactory {
  
    /**
     * Extractor factory that returns an empty list of extractors. Can be used whenever {@link
     * Extractor Extractors} are not required.
     */
    ExtractorsFactory EMPTY = () -> new Extractor[] {};
  
    /** Returns an array of new {@link Extractor} instances. */
    Extractor[] createExtractors();
  
    /**
     * Returns an array of new {@link Extractor} instances.
     *
     * @param uri The {@link Uri} of the media to extract.
     * @param responseHeaders The response headers of the media to extract, or an empty map if there
     *     are none. The map lookup should be case-insensitive.
     * @return The {@link Extractor} instances.
     */
    default Extractor[] createExtractors(Uri uri, Map<String, List<String>> responseHeaders) {
      return createExtractors();
    }
  }
  