1 /* 2 * Copyright (C) 2001, 2002, and 2003 Roy Keene 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License 6 * as published by the Free Software Foundation; either version 2 7 * of the License, or (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 17 * 18 * email: dact@rkeene.org 19 */ 20 21 22 #include "dact.h" 23 #include "comp_factor.h" 24 #include <stdio.h> 25 #ifdef HAVE_UNISTD_H 26 #include <unistd.h> 27 #endif 28 #ifdef HAVE_STDLIB_H 29 #include <stdlib.h> 30 #endif 31 32 33 /* 34 mode - DACT_MODE_COMPR or DACT_MODE_DECMP 35 Determine whether to compress or decompress. 36 prev_block - Previous (uncompressed) block. 37 curr_block - The data to be compressed. 38 out_block - Where to put data after compression. 39 blk_size - Size of prev_block and curr_block. 40 */ 41 #if defined(AS_MODULE) && defined(USE_MODULES) 42 #include "module.h" 43 uint32_t DC_NUM=10; 44 uint32_t DC_TYPE=DACT_MOD_TYPE_COMP; 45 void *DC_ALGO=comp_factor_algo; 46 char *DC_NAME="Factor Compression (MOD)"; 47 #endif 48 int comp_factor_algo(int mode, unsigned char *prev_block, unsigned char *curr_block, char *out_block, int blk_size, int bufsize) { 49 switch(mode) { 50 case DACT_MODE_COMPR: 51 return(comp_factor_compress(prev_block, curr_block, out_block, blk_size, bufsize)); 52 break; /* Heh */ 53 case DACT_MODE_DECMP: 54 return(comp_factor_decompress(prev_block, curr_block, out_block, blk_size, bufsize)); 55 break; 56 default: 57 fprintf(stderr, "Unsupported mode: %i\n", mode); 58 return(-1); 59 } 60 } 61 62 int comp_factor_compress(unsigned char *prev_block, unsigned char *curr_block, char *out_block, int blk_size, int bufsize) { 63 return(-1); 64 } 65 66 int comp_factor_decompress(unsigned char *prev_block, unsigned char *curr_block, char *out_block, int blk_size, int bufsize) { 67 fprintf(stderr, "Not yet supported.\n"); 68 return(0); 69 } |