content: /*
   * Copyright (C) 2014 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 android.hardware.camera2.legacy;
  
  import android.hardware.Camera;
  
  import java.util.Collections;
  import java.util.Comparator;
  import java.util.List;
  
  import static com.android.internal.util.Preconditions.*;
  
  /**
   * Comparator for api1 {@link Camera.Size} objects by the area.
   *
   * <p>This comparator totally orders by rectangle area. Tie-breaks on width.</p>
   */
  @SuppressWarnings("deprecation")
  public class SizeAreaComparator implements Comparator<Camera.Size> {
      /**
       * {@inheritDoc}
       */
      @Override
      public int compare(Camera.Size size, Camera.Size size2) {
          checkNotNull(size, "size must not be null");
          checkNotNull(size2, "size2 must not be null");
  
          if (size.equals(size2)) {
              return 0;
          }
  
          long width = size.width;
          long width2 = size2.width;
          long area = width * size.height;
          long area2 = width2 * size2.height;
  
          if (area == area2) {
              return (width > width2) ? 1 : -1;
          }
  
          return (area > area2) ? 1 : -1;
      }
  
      /**
       * Get the largest api1 {@code Camera.Size} from the list by comparing each size's area
       * by each other using {@link SizeAreaComparator}.
       *
       * @param sizes a non-{@code null} list of non-{@code null} sizes
       * @return a non-{@code null} size
       *
       * @throws NullPointerException if {@code sizes} or any elements in it were {@code null}
       */
      public static Camera.Size findLargestByArea(List<Camera.Size> sizes) {
          checkNotNull(sizes, "sizes must not be null");
  
          return Collections.max(sizes, new SizeAreaComparator());
      }
  }
  