/* Copyright (C) 1995 Aladdin Enterprises.  All rights reserved.
  
  This file is part of GNU ghostscript

  GNU ghostscript is free software; you can redistribute it and/or modify it under
  the terms of the GNU General Public License as published by the Free Software
  Foundation; either version 2, or (at your option) any later version.

  GNU ghostscript is distributed in the hope that it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

  You should have received a copy of the GNU General Public License along with
  ghostscript; see the file COPYING. If not, write to the Free Software Foundation,
  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

  
*/

/* $Id: smtf.h,v 1.4 2005/12/13 16:57:28 jemarch Exp $ */
/* Definitions for MoveToFront filters */
/* Requires scommon.h; strimpl.h if any templates are referenced */

#ifndef smtf_INCLUDED
#  define smtf_INCLUDED

/* MoveToFrontEncode/Decode */
typedef struct stream_MTF_state_s {
    stream_state_common;
    /* The following change dynamically. */
    union _p {
	ulong l[256 / sizeof(long)];
	byte b[256];
    } prev;
} stream_MTF_state;
typedef stream_MTF_state stream_MTFE_state;
typedef stream_MTF_state stream_MTFD_state;

#define private_st_MTF_state()	/* in sbwbs.c */\
  gs_private_st_simple(st_MTF_state, stream_MTF_state,\
    "MoveToFrontEncode/Decode state")
extern const stream_template s_MTFE_template;
extern const stream_template s_MTFD_template;

#endif /* smtf_INCLUDED */
