1 /* Copyright (C) 1995 Aladdin Enterprises. All rights reserved. 2 3 This software is provided AS-IS with no warranty, either express or 4 implied. 5 6 This software is distributed under license and may not be copied, 7 modified or distributed except as expressly authorized under the terms 8 of the license contained in the file LICENSE in this distribution. 9 10 For more information about licensing, please refer to 11 http://www.ghostscript.com/licensing/. For information on 12 commercial licensing, go to http://www.artifex.com/licensing/ or 13 contact Artifex Software, Inc., 101 Lucas Valley Road #110, 14 San Rafael, CA 94903, U.S.A., +1(415)492-9861. 15 */ 16 17 /* $Id: smtf.h,v 1.4 2002/02/21 22:24:54 giles Exp $ */ 18 /* Definitions for MoveToFront filters */ 19 /* Requires scommon.h; strimpl.h if any templates are referenced */ 20 21 #ifndef smtf_INCLUDED 22 # define smtf_INCLUDED 23 24 /* MoveToFrontEncode/Decode */ 25 typedef struct stream_MTF_state_s { 26 stream_state_common; 27 /* The following change dynamically. */ 28 union _p { 29 ulong l[256 / sizeof(long)]; 30 byte b[256]; 31 } prev; 32 } stream_MTF_state; 33 typedef stream_MTF_state stream_MTFE_state; 34 typedef stream_MTF_state stream_MTFD_state; 35 36 #define private_st_MTF_state() /* in sbwbs.c */\ 37 gs_private_st_simple(st_MTF_state, stream_MTF_state,\ 38 "MoveToFrontEncode/Decode state") 39 extern const stream_template s_MTFE_template; 40 extern const stream_template s_MTFD_template; 41 42 #endif /* smtf_INCLUDED */ 43