Class JPEGFile

java.lang.Object
org.apache.xmlgraphics.image.loader.impl.JPEGFile
All Implemented Interfaces:
JPEGConstants
public class JPEGFile extends Object implements JPEGConstants
Provides methods useful for processing JPEG files.

  • Field Details

    • log

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

    • in

      private DataInput in

  • Constructor Details

    • JPEGFile

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

    • JPEGFile

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

  • Method Details

    • getDataInput

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

    • readMarkerSegment

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

    • readSegmentLength

      public int readSegmentLength() throws 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:
      IOException - if an I/O error occurs while reading from the image file

    • skipCurrentMarkerSegment

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