Class CompressionUtils

Method Details

• writeUint7

  public static void writeUint7(int i, ByteBuffer cp)

• readUint7

  public static int readUint7(ByteBuffer cp)

• encodePack

  public static ByteBuffer encodePack(ByteBuffer inBuffer, ByteBuffer outBuffer, int[] frequencyTable, int[] packMappingTable, int numSymbols)

• decodePack

  public static ByteBuffer decodePack(ByteBuffer inBuffer, byte[] packMappingTable, int numSymbols, int uncompressedPackOutputLength)

• allocateOutputBuffer

  public static ByteBuffer allocateOutputBuffer(int inSize)

• allocateByteBuffer

  public static ByteBuffer allocateByteBuffer(int bufferSize)

• wrap

  public static ByteBuffer wrap(byte[] inputBytes)

• slice

  public static ByteBuffer slice(ByteBuffer inputBuffer)

• toByteArray

  public static byte[] toByteArray(ByteBuffer buffer)

  Return a byte array with a size that matches the limit of the provided ByteBuffer. If the ByteBuffer is backed by a byte array that matches the limit of the ByteBuffer, the backing array will be returned directly. Otherwise, copy the contents of the ByteBuffer into a new byte array and return the new byte array.

  Parameters:

  buffer - input ByteBuffer which is the source of the byte array

  Returns:

  A byte array. If the ByteBuffer is backed by a byte array that matches the limit of the ByteBuffer, return the backing array directly. Otherwise, copy the contents of the ByteBuffer into a new byte array.