1 /* lzo1c.h -- public interface of the LZO1C compression algorithm 2 3 This file is part of the LZO real-time data compression library. 4 5 Copyright (C) 1996-2014 Markus Franz Xaver Johannes Oberhumer 6 All Rights Reserved. 7 8 The LZO library is free software; you can redistribute it and/or 9 modify it under the terms of the GNU General Public License as 10 published by the Free Software Foundation; either version 2 of 11 the License, or (at your option) any later version. 12 13 The LZO library is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with the LZO library; see the file COPYING. 20 If not, write to the Free Software Foundation, Inc., 21 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 22 23 Markus F.X.J. Oberhumer 24 <markus (at) oberhumer.com> 25 http://www.oberhumer.com/opensource/lzo/ 26 */ 27 28 29 #ifndef __LZO1C_H_INCLUDED 30 #define __LZO1C_H_INCLUDED 1 31 32 #ifndef __LZOCONF_H_INCLUDED 33 #include "lzoconf.h" 34 #endif 35 36 #ifdef __cplusplus 37 extern "C" { 38 #endif 39 40 41 /*********************************************************************** 42 // 43 ************************************************************************/ 44 45 /* Memory required for the wrkmem parameter. 46 * When the required size is 0, you can also pass a NULL pointer. 47 */ 48 49 #define LZO1C_MEM_COMPRESS ((lzo_uint32_t) (16384L * lzo_sizeof_dict_t)) 50 #define LZO1C_MEM_DECOMPRESS (0) 51 52 53 /* compression levels */ 54 #define LZO1C_BEST_SPEED 1 55 #define LZO1C_BEST_COMPRESSION 9 56 #define LZO1C_DEFAULT_COMPRESSION (-1) /* fastest by default */ 57 58 59 LZO_EXTERN(int) 60 lzo1c_compress ( const lzo_bytep src, lzo_uint src_len, 61 lzo_bytep dst, lzo_uintp dst_len, 62 lzo_voidp wrkmem, 63 int compression_level ); 64 65 /* decompression */ 66 LZO_EXTERN(int) 67 lzo1c_decompress ( const lzo_bytep src, lzo_uint src_len, 68 lzo_bytep dst, lzo_uintp dst_len, 69 lzo_voidp wrkmem /* NOT USED */ ); 70 71 /* safe decompression with overrun testing */ 72 LZO_EXTERN(int) 73 lzo1c_decompress_safe ( const lzo_bytep src, lzo_uint src_len, 74 lzo_bytep dst, lzo_uintp dst_len, 75 lzo_voidp wrkmem /* NOT USED */ ); 76 77 78 /*********************************************************************** 79 // 80 ************************************************************************/ 81 82 LZO_EXTERN(int) 83 lzo1c_1_compress ( const lzo_bytep src, lzo_uint src_len, 84 lzo_bytep dst, lzo_uintp dst_len, 85 lzo_voidp wrkmem ); 86 LZO_EXTERN(int) 87 lzo1c_2_compress ( const lzo_bytep src, lzo_uint src_len, 88 lzo_bytep dst, lzo_uintp dst_len, 89 lzo_voidp wrkmem ); 90 LZO_EXTERN(int) 91 lzo1c_3_compress ( const lzo_bytep src, lzo_uint src_len, 92 lzo_bytep dst, lzo_uintp dst_len, 93 lzo_voidp wrkmem ); 94 LZO_EXTERN(int) 95 lzo1c_4_compress ( const lzo_bytep src, lzo_uint src_len, 96 lzo_bytep dst, lzo_uintp dst_len, 97 lzo_voidp wrkmem ); 98 LZO_EXTERN(int) 99 lzo1c_5_compress ( const lzo_bytep src, lzo_uint src_len, 100 lzo_bytep dst, lzo_uintp dst_len, 101 lzo_voidp wrkmem ); 102 LZO_EXTERN(int) 103 lzo1c_6_compress ( const lzo_bytep src, lzo_uint src_len, 104 lzo_bytep dst, lzo_uintp dst_len, 105 lzo_voidp wrkmem ); 106 LZO_EXTERN(int) 107 lzo1c_7_compress ( const lzo_bytep src, lzo_uint src_len, 108 lzo_bytep dst, lzo_uintp dst_len, 109 lzo_voidp wrkmem ); 110 LZO_EXTERN(int) 111 lzo1c_8_compress ( const lzo_bytep src, lzo_uint src_len, 112 lzo_bytep dst, lzo_uintp dst_len, 113 lzo_voidp wrkmem ); 114 LZO_EXTERN(int) 115 lzo1c_9_compress ( const lzo_bytep src, lzo_uint src_len, 116 lzo_bytep dst, lzo_uintp dst_len, 117 lzo_voidp wrkmem ); 118 119 120 /*********************************************************************** 121 // better compression ratio at the cost of more memory and time 122 ************************************************************************/ 123 124 #define LZO1C_99_MEM_COMPRESS ((lzo_uint32_t) (65536L * lzo_sizeof_dict_t)) 125 126 LZO_EXTERN(int) 127 lzo1c_99_compress ( const lzo_bytep src, lzo_uint src_len, 128 lzo_bytep dst, lzo_uintp dst_len, 129 lzo_voidp wrkmem ); 130 131 132 #define LZO1C_999_MEM_COMPRESS ((lzo_uint32_t) (5 * 16384L * sizeof(short))) 133 134 LZO_EXTERN(int) 135 lzo1c_999_compress ( const lzo_bytep src, lzo_uint src_len, 136 lzo_bytep dst, lzo_uintp dst_len, 137 lzo_voidp wrkmem ); 138 139 140 141 #ifdef __cplusplus 142 } /* extern "C" */ 143 #endif 144 145 #endif /* already included */ 146 147 148 /* vim:set ts=4 et: */ 149
