Package com.adobe.internal.io.stream

Class BitInputStream

java.lang.Object
com.adobe.internal.io.stream.BitInputStream
public class BitInputStream extends Object
This class reads bit by bit data from a back-end stream which is passed in constructor.

  • Constructor Summary

    Constructors
    Constructor
    Description
    BitInputStream(InputStream stream)
    Constructor for this stream.

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    available()
    This method returns approximate number of bits which are available to read.
    void
    close()
    Releases the resources hold by this instance.
    int
    read()
    Reads next 1 bit of available data.
    int
    read(byte[] b, int bitsPerValue, int length)
    This method breaks the back-end stream into data samples each having "bitsPerValue" number of bits and writes length number of samples to the byte array passed.
    int
    read(int nob)
    Reads nob number of bits from available data and returns an integer value.
    int
    read(int[] b, int bitsPerValue, int length)
    This method breaks the back-end stream into data samples each having "bitsPerValue" number of bits and writes length number of samples to the byte array passed.
    long
    skip(long n)
    This method skips n number of bits from available data.

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • BitInputStream

      public BitInputStream(InputStream stream) throws IOException
      Constructor for this stream.
      Parameters:
      stream - This stream is used as back-end stream to read bit by bit data.
      Throws:
      IOException

  • Method Details

    • read

      public int read(int nob) throws IOException
      Reads nob number of bits from available data and returns an integer value. Throws IOException if end of stream has been reached.
      Parameters:
      nob -
      Returns:
      int
      Throws:
      IOException

    • read

      public int read() throws IOException
      Reads next 1 bit of available data. Throws IOException if end of stream has been reached.
      Throws:
      IOException

    • close

      public void close() throws IOException
      Releases the resources hold by this instance.
      Throws:
      IOException

    • skip

      public long skip(long n) throws IOException
      This method skips n number of bits from available data.
      Throws:
      IOException

    • read

      public int read(byte[] b, int bitsPerValue, int length)
      This method breaks the back-end stream into data samples each having "bitsPerValue" number of bits and writes length number of samples to the byte array passed. Throws an exception if bitsPerValue is greater than 8 OR byte array passed null OR it's length invalid input: '<' "length" Returns the number of values actually written to the byte array.
      Parameters:
      b -
      bitsPerValue -
      Returns:
      int

    • read

      public int read(int[] b, int bitsPerValue, int length)
      This method breaks the back-end stream into data samples each having "bitsPerValue" number of bits and writes length number of samples to the byte array passed. Throws an exception if byte array passed null OR it's length invalid input: '<' "length" Returns the number of values actually written to the byte array.
      Parameters:
      b -
      bitsPerValue -
      Returns:
      int

    • available

      public int available() throws IOException
      This method returns approximate number of bits which are available to read. Actual number of bits may be more than the count returned by this method but not less than that.
      Returns:
      int
      Throws:
      IOException