1 #ifndef __LZO_H__ 2 #define __LZO_H__ 3 /* 4 * LZO Public Kernel Interface 5 * A mini subset of the LZO real-time data compression library 6 * 7 * Copyright (C) 1996-2005 Markus F.X.J. Oberhumer <markus (at) oberhumer.com> 8 * 9 * The full LZO package can be found at: 10 * http://www.oberhumer.com/opensource/lzo/ 11 * 12 * Changed for kernel use by: 13 * Nitin Gupta <nitingupta910 (at) gmail.com> 14 * Richard Purdie <rpurdie (at) openedhand.com> 15 */ 16 17 #define LZO1X_MEM_COMPRESS (16384 * sizeof(unsigned char *)) 18 #define LZO1X_1_MEM_COMPRESS LZO1X_MEM_COMPRESS 19 20 #define lzo1x_worst_compress(x) ((x) + ((x) / 16) + 64 + 3) 21 22 /* This requires 'workmem' of size LZO1X_1_MEM_COMPRESS */ 23 int lzo1x_1_compress(const unsigned char *src, size_t src_len, 24 unsigned char *dst, size_t *dst_len, void *wrkmem); 25 26 /* safe decompression with overrun testing */ 27 int lzo1x_decompress_safe(const unsigned char *src, size_t src_len, 28 unsigned char *dst, size_t *dst_len); 29 30 /* decompress lzop format */ 31 int lzop_decompress(const unsigned char *src, size_t src_len, 32 unsigned char *dst, size_t *dst_len); 33 34 /* check if the header is valid (based on magic numbers) */ 35 bool lzop_is_valid_header(const unsigned char *src); 36 37 /* 38 * Return values (< 0 = Error) 39 */ 40 #define LZO_E_OK 0 41 #define LZO_E_ERROR (-1) 42 #define LZO_E_OUT_OF_MEMORY (-2) 43 #define LZO_E_NOT_COMPRESSIBLE (-3) 44 #define LZO_E_INPUT_OVERRUN (-4) 45 #define LZO_E_OUTPUT_OVERRUN (-5) 46 #define LZO_E_LOOKBEHIND_OVERRUN (-6) 47 #define LZO_E_EOF_NOT_FOUND (-7) 48 #define LZO_E_INPUT_NOT_CONSUMED (-8) 49 #define LZO_E_NOT_YET_IMPLEMENTED (-9) 50 51 #endif 52
