1 #ifndef LZO_WRAPPER_H 2 #define LZO_WRAPPER_H 3 /* 4 * Squashfs 5 * 6 * Copyright (c) 2013 7 * Phillip Lougher <phillip (at) squashfs.org.uk> 8 * 9 * This program is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU General Public License 11 * as published by the Free Software Foundation; either version 2, 12 * or (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 22 * 23 * lzo_wrapper.h 24 * 25 */ 26 27 #ifndef linux 28 #define __BYTE_ORDER BYTE_ORDER 29 #define __BIG_ENDIAN BIG_ENDIAN 30 #define __LITTLE_ENDIAN LITTLE_ENDIAN 31 #else 32 #include <endian.h> 33 #endif 34 35 #if __BYTE_ORDER == __BIG_ENDIAN 36 extern unsigned int inswap_le32(unsigned int); 37 38 #define SQUASHFS_INSWAP_COMP_OPTS(s) { \ 39 (s)->algorithm = inswap_le32((s)->algorithm); \ 40 (s)->compression_level = inswap_le32((s)->compression_level); \ 41 } 42 #else 43 #define SQUASHFS_INSWAP_COMP_OPTS(s) 44 #endif 45 46 /* Define the compression flags recognised. */ 47 #define SQUASHFS_LZO1X_1 0 48 #define SQUASHFS_LZO1X_1_11 1 49 #define SQUASHFS_LZO1X_1_12 2 50 #define SQUASHFS_LZO1X_1_15 3 51 #define SQUASHFS_LZO1X_999 4 52 53 /* Default compression level used by SQUASHFS_LZO1X_999 */ 54 #define SQUASHFS_LZO1X_999_COMP_DEFAULT 8 55 56 struct lzo_comp_opts { 57 int algorithm; 58 int compression_level; 59 }; 60 61 struct lzo_algorithm { 62 char *name; 63 int size; 64 int (*compress) (const lzo_bytep, lzo_uint, lzo_bytep, lzo_uintp, 65 lzo_voidp); 66 }; 67 68 struct lzo_stream { 69 void *workspace; 70 void *buffer; 71 }; 72 73 #define LZO_MAX_EXPANSION(size) (size + (size / 16) + 64 + 3) 74 75 int lzo1x_999_wrapper(const lzo_bytep, lzo_uint, lzo_bytep, lzo_uintp, 76 lzo_voidp); 77 78 #endif 79
