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.marshal.impl;
  
  import android.hardware.camera2.marshal.Marshaler;
  import android.hardware.camera2.marshal.MarshalQueryable;
  import android.hardware.camera2.params.MeteringRectangle;
  import android.hardware.camera2.utils.TypeReference;
  
  import java.nio.ByteBuffer;
  
  import static android.hardware.camera2.impl.CameraMetadataNative.*;
  import static android.hardware.camera2.marshal.MarshalHelpers.*;
  
  /**
   * Marshal {@link MeteringRectangle} to/from {@link #TYPE_INT32}
   */
  public class MarshalQueryableMeteringRectangle implements MarshalQueryable<MeteringRectangle> {
      private static final int SIZE = SIZEOF_INT32 * 5;
  
      /** (xmin, ymin, xmax, ymax, weight) */
      private class MarshalerMeteringRectangle extends Marshaler<MeteringRectangle> {
          protected MarshalerMeteringRectangle(TypeReference<MeteringRectangle> typeReference,
                  int nativeType) {
              super(MarshalQueryableMeteringRectangle.this, typeReference, nativeType);
          }
  
          @Override
          public void marshal(MeteringRectangle value, ByteBuffer buffer) {
              int xMin = value.getX();
              int yMin = value.getY();
              int xMax = xMin + value.getWidth();
              int yMax = yMin + value.getHeight();
              int weight = value.getMeteringWeight();
  
              buffer.putInt(xMin);
              buffer.putInt(yMin);
              buffer.putInt(xMax);
              buffer.putInt(yMax);
              buffer.putInt(weight);
          }
  
          @Override
          public MeteringRectangle unmarshal(ByteBuffer buffer) {
              int xMin = buffer.getInt();
              int yMin = buffer.getInt();
              int xMax = buffer.getInt();
              int yMax = buffer.getInt();
              int weight = buffer.getInt();
  
              int width = xMax - xMin;
              int height = yMax - yMin;
  
              return new MeteringRectangle(xMin, yMin, width, height, weight);
          }
  
          @Override
          public int getNativeSize() {
              return SIZE;
          }
      }
  
      @Override
      public Marshaler<MeteringRectangle> createMarshaler(
              TypeReference<MeteringRectangle> managedType, int nativeType) {
          return new MarshalerMeteringRectangle(managedType, nativeType);
      }
  
      @Override
      public boolean isTypeMappingSupported(
              TypeReference<MeteringRectangle> managedType, int nativeType) {
          return nativeType == TYPE_INT32 && MeteringRectangle.class.equals(managedType.getType());
      }
  
  }
  