/* $Id: ac.hpp,v 1.1 2003/05/05 21:24:06 wmaycisco Exp $ *//****************************************************************************//*   MPEG4 Visual Texture Coding (VTC) Mode Software                        *//*                                                                          *//*   This software was jointly developed by the following participants:     *//*                                                                          *//*   Single-quant,  multi-quant and flow control                            *//*   are provided by  Sarnoff Corporation                                   *//*     Iraj Sodagar   (iraj@sarnoff.com)                                    *//*     Hung-Ju Lee    (hjlee@sarnoff.com)                                   *//*     Paul Hatrack   (hatrack@sarnoff.com)                                 *//*     Shipeng Li     (shipeng@sarnoff.com)                                 *//*     Bing-Bing Chai (bchai@sarnoff.com)                                   *//*     B.S. Srinivas  (bsrinivas@sarnoff.com)                               *//*                                                                          *//*   Bi-level is provided by Texas Instruments                              *//*     Jie Liang      (liang@ti.com)                                        *//*                                                                          *//*   Shape Coding is provided by  OKI Electric Industry Co., Ltd.           *//*     Zhixiong Wu    (sgo@hlabs.oki.co.jp)                                 *//*     Yoshihiro Ueda (yueda@hlabs.oki.co.jp)                               *//*     Toshifumi Kanamaru (kanamaru@hlabs.oki.co.jp)                        *//*                                                                          *//*   OKI, Sharp, Sarnoff, TI and Microsoft contributed to bitstream         *//*   exchange and bug fixing.                                               *//*                                                                          *//*                                                                          *//* In the course of development of the MPEG-4 standard, this software       *//* module is an implementation of a part of one or more MPEG-4 tools as     *//* specified by the MPEG-4 standard.                                        *//*                                                                          *//* The copyright of this software belongs to ISO/IEC. ISO/IEC gives use     *//* of the MPEG-4 standard free license to use this  software module or      *//* modifications thereof for hardware or software products claiming         *//* conformance to the MPEG-4 standard.                                      *//*                                                                          *//* Those intending to use this software module in hardware or software      *//* products are advised that use may infringe existing  patents. The        *//* original developers of this software module and their companies, the     *//* subsequent editors and their companies, and ISO/IEC have no liability    *//* and ISO/IEC have no liability for use of this software module or         *//* modification thereof in an implementation.                               *//*                                                                          *//* Permission is granted to MPEG members to use, copy, modify,              *//* and distribute the software modules ( or portions thereof )              *//* for standardization activity within ISO/IEC JTC1/SC29/WG11.              *//*                                                                          *//* Copyright 1995, 1996, 1997, 1998 ISO/IEC                                 *//****************************************************************************//************************************************************//*     Sarnoff Very Low Bit Rate Still Image Coder          *//*     Copyright 1995, 1996, 1997, 1998 Sarnoff Corporation *//************************************************************//************************************************************//*  Filename: ac.h                                          *//*                                                          *//*  Descriptions:                                           *//*    This is the header file of ac.c containing arithmetic *//*    coding routines.                                      *//*                                                          *//************************************************************/#ifndef AC_HEADER#define AC_HEADER//#include <stdio.h>#include "basic.hpp"//changed by Sarnoff for error resilience, 3/5/99//#define MAX_BUFFER 1024#define MAX_BUFFER 10000//end changed by Sarnoff for error resilience, 3/5/99typedef struct {  FILE *fp;  long low;  long high;  long followBits;  Int buffer;  Int bitsLeft;  long bitCount;  UChar *bitstream;  long  bitstreamLength;} ac_encoder;typedef struct {  FILE *fp;  long value;  long low;  long high;  Int buffer;  Int bitsLeft;  UChar *bitstream;  long bitCount;  long  bitstream_ptr;  Int  dc_band;} ac_decoder;typedef struct {  Int nsym;   /* the number of symbols in the symbol set to be encoded */  Int adapt;  /* 0 => non-adaptive, !0 => adaptive */  Int inc;  /* for zeroth and mixed order models only */  UShort *freq;  UShort *cfreq;  UShort Max_frequency;} ac_model;#endif