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.ColorSpaceTransform;
  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 ColorSpaceTransform} to/from {@link #TYPE_RATIONAL}
   */
  public class MarshalQueryableColorSpaceTransform implements
          MarshalQueryable<ColorSpaceTransform> {
  
      private static final int ELEMENTS_INT32 = 3 * 3 * (SIZEOF_RATIONAL / SIZEOF_INT32);
      private static final int SIZE = SIZEOF_INT32 * ELEMENTS_INT32;
  
      /** rational x 3 x 3 */
      private class MarshalerColorSpaceTransform extends Marshaler<ColorSpaceTransform> {
          protected MarshalerColorSpaceTransform(TypeReference<ColorSpaceTransform> typeReference,
                  int nativeType) {
              super(MarshalQueryableColorSpaceTransform.this, typeReference, nativeType);
          }
  
          @Override
          public void marshal(ColorSpaceTransform value, ByteBuffer buffer) {
              int[] transformAsArray = new int[ELEMENTS_INT32];
              value.copyElements(transformAsArray, /*offset*/0);
  
              for (int i = 0; i < ELEMENTS_INT32; ++i) {
                  buffer.putInt(transformAsArray[i]);
              }
          }
  
          @Override
          public ColorSpaceTransform unmarshal(ByteBuffer buffer) {
              int[] transformAsArray = new int[ELEMENTS_INT32];
  
              for (int i = 0; i < ELEMENTS_INT32; ++i) {
                  transformAsArray[i] = buffer.getInt();
              }
  
              return new ColorSpaceTransform(transformAsArray);
          }
  
          @Override
          public int getNativeSize() {
              return SIZE;
          }
      }
  
      @Override
      public Marshaler<ColorSpaceTransform> createMarshaler(
              TypeReference<ColorSpaceTransform> managedType, int nativeType) {
          return new MarshalerColorSpaceTransform(managedType, nativeType);
      }
  
      @Override
      public boolean isTypeMappingSupported(
              TypeReference<ColorSpaceTransform> managedType, int nativeType) {
          return nativeType == TYPE_RATIONAL &&
                  ColorSpaceTransform.class.equals(managedType.getType());
      }
  
  }
  