#include <basicInt.h>
#include <bitparser.h>
The BitParser API is a bunch of macros that provides bit-level access interface to the content of the BitStream. A bitparser can be either output BitParser, which writes into the BitStream, or input BitParser, which reads from the BitStream. Both type of BitParser can operates in two modes : bit-modes or byte-modes. Calling byte-mode macros when the bitparser is in bit-mode can produce wrong result.
We can switch from bit-mode to byte-mode by calling Bp_InByteAlign (also called Bp_ByteAlign) or Bp_OutByteAlign. Switching from byte-mode to bit-mode is implicit whenever we called a bit-mode macros.
BitParser macros name takes the format of Bp_ActionUnit, where Action specifies what we are going to do, and Unit tell us how much data we are going to work on. Unit can be either Bits, Byte, Short, Int, Bytes.
Get
Consume data from the bitstream and output the value of the data. Advance the cursor.Unget (also called Restore)
Move the cursor back.Peek
Same as Get but does not advance the cursor.Flush
Same as Get but the value is ignored.Put
Write data into the bitstream.Unput
Undo writing of data into the bitstream.Move
Get from one BitStream and Put into another.
Streams
Last Updated :
Copyright © 1997-1998 by Cornell University. See the file license.txt for information on usage and redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.