Package net.sourceforge.jiu.codecs.jpeg

Class JPEGConstants

java.lang.Object
net.sourceforge.jiu.codecs.jpeg.JPEGConstants
public final class JPEGConstants extends Object
Constants necessary to encode and decode JPEG streams.
Since:
0.13.0
Author:
Marco Schmidt

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final int
    BLOCK_EDGE_LENGTH
    Length of sample block edge, in samples (8).
    static final int
    JFIF_SIGNATURE
    16 bit value that denotes the beginning of a JPEG stream (0xffd8).
    static final int
    MARKER_DHT
    DHT (define Huffman table) marker ID value.
    static final int
    MARKER_DQT
    DQT (define quantization table) marker ID value.
    static final int
    MARKER_SOF0
    SOF0 (start of frame, type 0) marker ID value.
    static final int
    MARKER_SOF1
    SOF1 (start of frame, type 1) marker ID value.
    static final int
    MARKER_SOF2
    SOF2 (start of frame, type 2) marker ID value.
    static final int
    MARKER_SOF3
    SOF3 (start of frame, type 3) marker ID value.
    static final int
    MARKER_SOF5
    SOF5 (start of frame, type 5) marker ID value.
    static final int
    MARKER_SOF6
    SOF6 (start of frame, type 6) marker ID value.
    static final int
    MARKER_SOF7
    SOF7 (start of frame, type 7) marker ID value.
    static final int
    MARKER_SOF9
    SOF9 (start of frame, type 9) marker ID value.
    static final int
    MARKER_SOFA
    SOFa (start of frame, type a) marker ID value.
    static final int
    MARKER_SOFB
    SOFb (start of frame, type b) marker ID value.
    static final int
    MARKER_SOFD
    SOFd (start of frame, type d) marker ID value.
    static final int
    MARKER_SOFE
    SOFe (start of frame, type e) marker ID value.
    static final int
    MARKER_SOFF
    SOFf (start of frame, type f) marker ID value.
    static final int
    MARKER_SOS
    SOS (start of scan) marker ID value.
    static final int
    MAX_HUFFMAN_CODE_LENGTH
    Maximum length of a Huffman code in bit (16).
    static final int
    SAMPLES_PER_BLOCK
    Number of samples in a block of samples (64).

  • Constructor Summary

    Constructors
    Modifier
    Constructor
    Description
    private
    JPEGConstants()
    Empty private constructor to prevent instantiation of this class.

  • Method Summary

    Methods inherited from class java.lang.Object

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

  • Field Details

    • BLOCK_EDGE_LENGTH

      public static final int BLOCK_EDGE_LENGTH
      Length of sample block edge, in samples (8).
      See Also:

    • JFIF_SIGNATURE

      public static final int JFIF_SIGNATURE
      16 bit value that denotes the beginning of a JPEG stream (0xffd8).
      See Also:

    • MARKER_DHT

      public static final int MARKER_DHT
      DHT (define Huffman table) marker ID value.
      See Also:

    • MARKER_DQT

      public static final int MARKER_DQT
      DQT (define quantization table) marker ID value.
      See Also:

    • MARKER_SOF0

      public static final int MARKER_SOF0
      SOF0 (start of frame, type 0) marker ID value.
      See Also:

    • MARKER_SOF1

      public static final int MARKER_SOF1
      SOF1 (start of frame, type 1) marker ID value.
      See Also:

    • MARKER_SOF2

      public static final int MARKER_SOF2
      SOF2 (start of frame, type 2) marker ID value.
      See Also:

    • MARKER_SOF3

      public static final int MARKER_SOF3
      SOF3 (start of frame, type 3) marker ID value.
      See Also:

    • MARKER_SOF5

      public static final int MARKER_SOF5
      SOF5 (start of frame, type 5) marker ID value.
      See Also:

    • MARKER_SOF6

      public static final int MARKER_SOF6
      SOF6 (start of frame, type 6) marker ID value.
      See Also:

    • MARKER_SOF7

      public static final int MARKER_SOF7
      SOF7 (start of frame, type 7) marker ID value.
      See Also:

    • MARKER_SOF9

      public static final int MARKER_SOF9
      SOF9 (start of frame, type 9) marker ID value.
      See Also:

    • MARKER_SOFA

      public static final int MARKER_SOFA
      SOFa (start of frame, type a) marker ID value.
      See Also:

    • MARKER_SOFB

      public static final int MARKER_SOFB
      SOFb (start of frame, type b) marker ID value.
      See Also:

    • MARKER_SOFD

      public static final int MARKER_SOFD
      SOFd (start of frame, type d) marker ID value.
      See Also:

    • MARKER_SOFE

      public static final int MARKER_SOFE
      SOFe (start of frame, type e) marker ID value.
      See Also:

    • MARKER_SOFF

      public static final int MARKER_SOFF
      SOFf (start of frame, type f) marker ID value.
      See Also:

    • MARKER_SOS

      public static final int MARKER_SOS
      SOS (start of scan) marker ID value.
      See Also:

    • MAX_HUFFMAN_CODE_LENGTH

      public static final int MAX_HUFFMAN_CODE_LENGTH
      Maximum length of a Huffman code in bit (16).
      See Also:

    • SAMPLES_PER_BLOCK

      public static final int SAMPLES_PER_BLOCK
      Number of samples in a block of samples (64).
      See Also:

  • Constructor Details

    • JPEGConstants

      private JPEGConstants()
      Empty private constructor to prevent instantiation of this class.