1 | /**************************************************************************
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2 | *
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3 | * model.h -- Part pf PPM data compression
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4 | * Copyright (C) 1987 Alistair Moffat
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5 | *
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6 | * This program is free software; you can redistribute it and/or modify
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7 | * it under the terms of the GNU General Public License as published by
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8 | * the Free Software Foundation; either version 2 of the License, or
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9 | * (at your option) any later version.
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10 | *
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11 | * This program is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | * GNU General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU General Public License
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17 | * along with this program; if not, write to the Free Software
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18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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19 | *
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20 | * $Id: model.h 16583 2008-07-29 10:20:36Z davidb $
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21 | *
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22 | **************************************************************************/
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23 |
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24 | #define defaultkbytes 896
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25 | #define minkbytes 56
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26 | #define maxkbytes ((65536/1024)*sizeof(eventnode))
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27 |
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28 | #ifndef increment
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29 | #define increment 8
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30 | #endif
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31 | #ifndef halveat
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32 | #define halveat 64
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33 | #endif
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34 | #define maxtotalcnt (increment*halveat)
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35 |
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36 | typedef int boolean;
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37 | #define false 0
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38 | #define true 1
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39 |
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40 | typedef short event;
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41 | typedef unsigned short point;
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42 |
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43 | typedef struct
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44 | {
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45 | short totalcnt;
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46 | short notfound;
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47 | point list; /* list storing the event records */
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48 | }
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49 | eventset;
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50 |
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51 | typedef struct
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52 | {
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53 | event eventnum;
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54 | short count;
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55 | point next, prev;
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56 | eventset foll;
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57 | }
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58 | eventnode, *eventptr;
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59 |
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60 | #define memsize (kbytes*1024)
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61 | #define maxnodes (memsize/sizeof(eventnode))
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62 | /* #define charsetsize 256 -- MAHE */
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63 | #define nchars (charsetsize+1)
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64 |
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65 | extern int charsetsize; /* -- MAHE */
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66 |
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67 | extern eventptr E;
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68 | extern long kbytes;
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69 | extern point numnodes, nfreenodes;
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70 | extern boolean excluded[]; /* -- MAHE */
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71 |
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72 | #define ENULL (E)
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73 |
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74 | typedef unsigned u;
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75 | #define p32(p) (E+p)
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76 | #define p16(p) (p-E)
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77 |
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78 | /* in ppm.c */
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79 | void write_model ();
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80 | void encodestring ();
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81 | void decodestring ();
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82 | void encodefile ();
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83 | void decodefile ();
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84 |
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85 | /* in lstevent.c */
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86 | void write_method ();
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87 | eventnode *encode_event_noex ();
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88 | eventnode *decode_event_noex ();
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89 | eventnode *encode_event ();
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90 | eventnode *decode_event ();
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91 | /* eventnode *addevent(); */
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92 | eventnode *newnode ();
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