Package org.apache.xmlgraphics.image.loader.impl

Class JPEGFile

  • All Implemented Interfaces:
    JPEGConstants
    public class JPEGFile
extends java.lang.Object
implements JPEGConstants
    Provides methods useful for processing JPEG files.

    • Constructor Summary

      Constructors 
      Constructor Description
      JPEGFile​(java.io.InputStream in)
      Constructor for InputStreams.
      JPEGFile​(javax.imageio.stream.ImageInputStream in)
      Constructor for ImageInputStreams.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      java.io.DataInput getDataInput()
      Returns the DataInput instance this object operates on.
      int readMarkerSegment()
      Reads the next marker segment identifier and returns it.
      int readSegmentLength()
      Reads the segment length of the current marker segment and returns it.
      void skipCurrentMarkerSegment()
      Skips the current marker segment.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • log

        protected static final org.apache.commons.logging.Log log
        logger

    • Constructor Detail

      • JPEGFile

        public JPEGFile​(javax.imageio.stream.ImageInputStream in)
        Constructor for ImageInputStreams.
        Parameters:
        in - the input stream to read the image from

      • JPEGFile

        public JPEGFile​(java.io.InputStream in)
        Constructor for InputStreams.
        Parameters:
        in - the input stream to read the image from

    • Method Detail

      • getDataInput

        public java.io.DataInput getDataInput()
        Returns the DataInput instance this object operates on.
        Returns:
        the data input instance

      • readMarkerSegment

        public int readMarkerSegment()
                      throws java.io.IOException
        Reads the next marker segment identifier and returns it.
        Returns:
        the marker segment identifier
        Throws:
        java.io.IOException - if an I/O error occurs while reading from the image file

      • readSegmentLength

        public int readSegmentLength()
                      throws java.io.IOException
        Reads the segment length of the current marker segment and returns it. The method assumes the file cursor is right after the segment header.
        Returns:
        the segment length
        Throws:
        java.io.IOException - if an I/O error occurs while reading from the image file

      • skipCurrentMarkerSegment

        public void skipCurrentMarkerSegment()
                              throws java.io.IOException
        Skips the current marker segment. The method assumes the file cursor is right after the segment header.
        Throws:
        java.io.IOException - if an I/O error occurs while reading from the image file