Package oshi.util

Class EdidUtil

  • @ThreadSafe
public final class EdidUtil
extends java.lang.Object
    EDID parsing utility.

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private static org.slf4j.Logger LOG  

    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      private EdidUtil()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      private static java.lang.String getAlphaNumericOrHex​(byte b)  
      static java.lang.String getDescriptorRangeLimits​(byte[] desc)
      Parse descriptor range limits
      static byte[][] getDescriptors​(byte[] edid)
      Get the VESA descriptors
      static java.lang.String getDescriptorText​(byte[] desc)
      Parse descriptor text
      static int getDescriptorType​(byte[] desc)
      Get the VESA descriptor type
      static int getHcm​(byte[] edid)
      Get monitor width in cm
      static java.lang.String getManufacturerID​(byte[] edid)
      Gets the Manufacturer ID from (up to) 3 5-bit characters in bytes 8 and 9
      static java.lang.String getProductID​(byte[] edid)
      Gets the Product ID, bytes 10 and 11
      static java.lang.String getSerialNo​(byte[] edid)
      Gets the Serial number, bytes 12-15
      static java.lang.String getTimingDescriptor​(byte[] desc)
      Parse a detailed timing descriptor
      static int getVcm​(byte[] edid)
      Get monitor height in cm
      static java.lang.String getVersion​(byte[] edid)
      Return the EDID version
      static byte getWeek​(byte[] edid)
      Return the week of year of manufacture
      static int getYear​(byte[] edid)
      Return the year of manufacture
      static boolean isDigital​(byte[] edid)
      Test if this EDID is a digital monitor based on byte 20
      static java.lang.String toString​(byte[] edid)
      Parse an EDID byte array into user-readable information

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • LOG

        private static final org.slf4j.Logger LOG

    • Constructor Detail

      • EdidUtil

        private EdidUtil()

    • Method Detail

      • getManufacturerID

        public static java.lang.String getManufacturerID​(byte[] edid)
        Gets the Manufacturer ID from (up to) 3 5-bit characters in bytes 8 and 9
        Parameters:
        edid - The EDID byte array
        Returns:
        The manufacturer ID

      • getProductID

        public static java.lang.String getProductID​(byte[] edid)
        Gets the Product ID, bytes 10 and 11
        Parameters:
        edid - The EDID byte array
        Returns:
        The product ID

      • getSerialNo

        public static java.lang.String getSerialNo​(byte[] edid)
        Gets the Serial number, bytes 12-15
        Parameters:
        edid - The EDID byte array
        Returns:
        If all 4 bytes represent alphanumeric characters, a 4-character string, otherwise a hex string.

      • getAlphaNumericOrHex

        private static java.lang.String getAlphaNumericOrHex​(byte b)

      • getWeek

        public static byte getWeek​(byte[] edid)
        Return the week of year of manufacture
        Parameters:
        edid - The EDID byte array
        Returns:
        The week of year

      • getYear

        public static int getYear​(byte[] edid)
        Return the year of manufacture
        Parameters:
        edid - The EDID byte array
        Returns:
        The year of manufacture

      • getVersion

        public static java.lang.String getVersion​(byte[] edid)
        Return the EDID version
        Parameters:
        edid - The EDID byte array
        Returns:
        The EDID version

      • isDigital

        public static boolean isDigital​(byte[] edid)
        Test if this EDID is a digital monitor based on byte 20
        Parameters:
        edid - The EDID byte array
        Returns:
        True if the EDID represents a digital monitor, false otherwise

      • getHcm

        public static int getHcm​(byte[] edid)
        Get monitor width in cm
        Parameters:
        edid - The EDID byte array
        Returns:
        Monitor width in cm

      • getVcm

        public static int getVcm​(byte[] edid)
        Get monitor height in cm
        Parameters:
        edid - The EDID byte array
        Returns:
        Monitor height in cm

      • getDescriptors

        public static byte[][] getDescriptors​(byte[] edid)
        Get the VESA descriptors
        Parameters:
        edid - The EDID byte array
        Returns:
        A 2D array with four 18-byte elements representing VESA descriptors

      • getDescriptorType

        public static int getDescriptorType​(byte[] desc)
        Get the VESA descriptor type
        Parameters:
        desc - An 18-byte VESA descriptor
        Returns:
        An integer representing the first four bytes of the VESA descriptor

      • getTimingDescriptor

        public static java.lang.String getTimingDescriptor​(byte[] desc)
        Parse a detailed timing descriptor
        Parameters:
        desc - An 18-byte VESA descriptor
        Returns:
        A string describing part of the detailed timing descriptor

      • getDescriptorRangeLimits

        public static java.lang.String getDescriptorRangeLimits​(byte[] desc)
        Parse descriptor range limits
        Parameters:
        desc - An 18-byte VESA descriptor
        Returns:
        A string describing some of the range limits

      • getDescriptorText

        public static java.lang.String getDescriptorText​(byte[] desc)
        Parse descriptor text
        Parameters:
        desc - An 18-byte VESA descriptor
        Returns:
        Plain text starting at the 4th byte

      • toString

        public static java.lang.String toString​(byte[] edid)
        Parse an EDID byte array into user-readable information
        Parameters:
        edid - An EDID byte array
        Returns:
        User-readable text represented by the EDID