| 1 | /**************************************************************************
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| 2 | *
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| 3 | * huffman_stdio.c -- Huffman coding function to a file
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| 4 | * Copyright (C) 1994 Neil Sharman
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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: huffman_stdio.c 439 1999-08-10 21:23:37Z sjboddie $
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| 21 | *
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| 22 | **************************************************************************/
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| 23 |
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| 24 | /*
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| 25 | $Log$
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| 26 | Revision 1.1 1999/08/10 21:16:52 sjboddie
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| 27 | renamed mg-1.3d directory mg
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| 28 |
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| 29 | Revision 1.1 1998/11/17 09:32:07 rjmcnab
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| 30 | *** empty log message ***
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| 31 |
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| 32 | * Revision 1.1 1994/08/22 00:24:46 tes
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| 33 | * Initial placement under CVS.
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| 34 | *
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| 35 | */
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| 36 |
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| 37 | static char *RCSID = "$Id: huffman_stdio.c 439 1999-08-10 21:23:37Z sjboddie $";
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| 38 |
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| 39 | #include "sysfuncs.h"
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| 40 |
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| 41 | #include "bitio_m.h"
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| 42 | #include "bitio_m_stdio.h"
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| 43 | #include "huffman.h"
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| 44 |
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| 45 | #if 0
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| 46 | int fprintf (FILE *, const char *,...);
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| 47 | int _filbuf (FILE *);
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| 48 | int _flsbuf (unsigned, FILE *);
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| 49 | #endif
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| 50 |
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| 51 | void
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| 52 | BIO_Stdio_Huff_Encode (unsigned long val, unsigned long *codes,
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| 53 | char *clens, stdio_bitio_state * bs)
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| 54 | {
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| 55 | ENCODE_CONTINUE (*bs)
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| 56 | HUFF_ENCODE (val, codes, clens);
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| 57 | ENCODE_PAUSE (*bs)
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| 58 | }
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| 59 |
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| 60 | unsigned long
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| 61 | BIO_Stdio_Huff_Decode (unsigned long *mincodes,
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| 62 | unsigned long **values,
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| 63 | stdio_bitio_state * bs)
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| 64 | {
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| 65 | unsigned long val;
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| 66 | DECODE_CONTINUE (*bs)
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| 67 | HUFF_DECODE (val, mincodes, values);
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| 68 | DECODE_PAUSE (*bs)
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| 69 | return (val);
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| 70 | }
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