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.StreamConfigurationDuration;
  import android.hardware.camera2.utils.TypeReference;
  
  import static android.hardware.camera2.impl.CameraMetadataNative.*;
  import static android.hardware.camera2.marshal.MarshalHelpers.*;
  
  import java.nio.ByteBuffer;
  
  /**
   * Marshaler for custom class {@link StreamConfigurationDuration} for min-frame and stall durations.
   *
   * <p>
   * Data is stored as {@code (format, width, height, durationNs)} tuples (int64).
   * </p>
   */
  public class MarshalQueryableStreamConfigurationDuration
          implements MarshalQueryable<StreamConfigurationDuration> {
  
      private static final int SIZE = SIZEOF_INT64 * 4;
      /**
       * Values and-ed with this will do an unsigned int to signed long conversion;
       * in other words the sign bit from the int will not be extended.
       * */
      private static final long MASK_UNSIGNED_INT = 0x00000000ffffffffL;
  
      private class MarshalerStreamConfigurationDuration
          extends Marshaler<StreamConfigurationDuration> {
  
          protected MarshalerStreamConfigurationDuration(
                  TypeReference<StreamConfigurationDuration> typeReference, int nativeType) {
              super(MarshalQueryableStreamConfigurationDuration.this, typeReference, nativeType);
          }
  
          @Override
          public void marshal(StreamConfigurationDuration value, ByteBuffer buffer) {
              buffer.putLong(value.getFormat() & MASK_UNSIGNED_INT); // unsigned int -> long
              buffer.putLong(value.getWidth());
              buffer.putLong(value.getHeight());
              buffer.putLong(value.getDuration());
          }
  
          @Override
          public StreamConfigurationDuration unmarshal(ByteBuffer buffer) {
              int format = (int)buffer.getLong();
              int width = (int)buffer.getLong();
              int height = (int)buffer.getLong();
              long durationNs = buffer.getLong();
  
              return new StreamConfigurationDuration(format, width, height, durationNs);
          }
  
          @Override
          public int getNativeSize() {
              return SIZE;
          }
      }
  
      @Override
      public Marshaler<StreamConfigurationDuration> createMarshaler(
              TypeReference<StreamConfigurationDuration> managedType, int nativeType) {
          return new MarshalerStreamConfigurationDuration(managedType, nativeType);
      }
  
      @Override
      public boolean isTypeMappingSupported(TypeReference<StreamConfigurationDuration> managedType,
              int nativeType) {
          return nativeType == TYPE_INT64 &&
                  (StreamConfigurationDuration.class.equals(managedType.getType()));
      }
  
  }