content: /*
   * Copyright 2002-2019 Drew Noakes and contributors
   *
   *    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
   *
   *        https://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.
   *
   * More information about this project is available at:
   *
   *    https://drewnoakes.com/code/exif/
   *    https://github.com/drewnoakes/metadata-extractor
   */
  package com.drew.imaging.tiff;
  
  import com.drew.lang.RandomAccessReader;
  import com.drew.lang.Rational;
  import com.drew.lang.annotations.NotNull;
  import com.drew.lang.annotations.Nullable;
  import com.drew.metadata.StringValue;
  
  import java.io.IOException;
  import java.util.Set;
  
  /**
   * Interface of an class capable of handling events raised during the reading of a TIFF file
   * via {@link TiffReader}.
   *
   * @author Drew Noakes https://drewnoakes.com
   */
  public interface TiffHandler
  {
      /**
       * Receives the 2-byte marker found in the TIFF header.
       * <p>
       * Implementations are not obligated to use this information for any purpose, though it may be useful for
       * validation or perhaps differentiating the type of mapping to use for observed tags and IFDs.
       *
       * @param marker the 2-byte value found at position 2 of the TIFF header
       */
      void setTiffMarker(int marker) throws TiffProcessingException;
  
      boolean tryEnterSubIfd(int tagId);
      boolean hasFollowerIfd();
  
      void endingIFD();
  
      @Nullable
      Long tryCustomProcessFormat(int tagId, int formatCode, long componentCount);
  
      boolean customProcessTag(int tagOffset,
                               @NotNull Set<Integer> processedIfdOffsets,
                               int tiffHeaderOffset,
                               @NotNull RandomAccessReader reader,
                               int tagId,
                               int byteCount) throws IOException;
  
      void warn(@NotNull String message);
      void error(@NotNull String message);
  
      void setByteArray(int tagId, @NotNull byte[] bytes);
      void setString(int tagId, @NotNull StringValue string);
      void setRational(int tagId, @NotNull Rational rational);
      void setRationalArray(int tagId, @NotNull Rational[] array);
      void setFloat(int tagId, float float32);
      void setFloatArray(int tagId, @NotNull float[] array);
      void setDouble(int tagId, double double64);
      void setDoubleArray(int tagId, @NotNull double[] array);
      void setInt8s(int tagId, byte int8s);
      void setInt8sArray(int tagId, @NotNull byte[] array);
      void setInt8u(int tagId, short int8u);
      void setInt8uArray(int tagId, @NotNull short[] array);
      void setInt16s(int tagId, int int16s);
      void setInt16sArray(int tagId, @NotNull short[] array);
      void setInt16u(int tagId, int int16u);
      void setInt16uArray(int tagId, @NotNull int[] array);
      void setInt32s(int tagId, int int32s);
      void setInt32sArray(int tagId, @NotNull int[] array);
      void setInt32u(int tagId, long int32u);
      void setInt32uArray(int tagId, @NotNull long[] array);
  }
  