1*b1b4e89aSStefan Roese #ifndef __LZO_H__ 2*b1b4e89aSStefan Roese #define __LZO_H__ 3*b1b4e89aSStefan Roese /* 4*b1b4e89aSStefan Roese * LZO Public Kernel Interface 5*b1b4e89aSStefan Roese * A mini subset of the LZO real-time data compression library 6*b1b4e89aSStefan Roese * 7*b1b4e89aSStefan Roese * Copyright (C) 1996-2005 Markus F.X.J. Oberhumer <markus@oberhumer.com> 8*b1b4e89aSStefan Roese * 9*b1b4e89aSStefan Roese * The full LZO package can be found at: 10*b1b4e89aSStefan Roese * http://www.oberhumer.com/opensource/lzo/ 11*b1b4e89aSStefan Roese * 12*b1b4e89aSStefan Roese * Changed for kernel use by: 13*b1b4e89aSStefan Roese * Nitin Gupta <nitingupta910@gmail.com> 14*b1b4e89aSStefan Roese * Richard Purdie <rpurdie@openedhand.com> 15*b1b4e89aSStefan Roese */ 16*b1b4e89aSStefan Roese 17*b1b4e89aSStefan Roese #define LZO1X_MEM_COMPRESS (16384 * sizeof(unsigned char *)) 18*b1b4e89aSStefan Roese #define LZO1X_1_MEM_COMPRESS LZO1X_MEM_COMPRESS 19*b1b4e89aSStefan Roese 20*b1b4e89aSStefan Roese #define lzo1x_worst_compress(x) ((x) + ((x) / 16) + 64 + 3) 21*b1b4e89aSStefan Roese 22*b1b4e89aSStefan Roese /* This requires 'workmem' of size LZO1X_1_MEM_COMPRESS */ 23*b1b4e89aSStefan Roese int lzo1x_1_compress(const unsigned char *src, size_t src_len, 24*b1b4e89aSStefan Roese unsigned char *dst, size_t *dst_len, void *wrkmem); 25*b1b4e89aSStefan Roese 26*b1b4e89aSStefan Roese /* safe decompression with overrun testing */ 27*b1b4e89aSStefan Roese int lzo1x_decompress_safe(const unsigned char *src, size_t src_len, 28*b1b4e89aSStefan Roese unsigned char *dst, size_t *dst_len); 29*b1b4e89aSStefan Roese 30*b1b4e89aSStefan Roese /* 31*b1b4e89aSStefan Roese * Return values (< 0 = Error) 32*b1b4e89aSStefan Roese */ 33*b1b4e89aSStefan Roese #define LZO_E_OK 0 34*b1b4e89aSStefan Roese #define LZO_E_ERROR (-1) 35*b1b4e89aSStefan Roese #define LZO_E_OUT_OF_MEMORY (-2) 36*b1b4e89aSStefan Roese #define LZO_E_NOT_COMPRESSIBLE (-3) 37*b1b4e89aSStefan Roese #define LZO_E_INPUT_OVERRUN (-4) 38*b1b4e89aSStefan Roese #define LZO_E_OUTPUT_OVERRUN (-5) 39*b1b4e89aSStefan Roese #define LZO_E_LOOKBEHIND_OVERRUN (-6) 40*b1b4e89aSStefan Roese #define LZO_E_EOF_NOT_FOUND (-7) 41*b1b4e89aSStefan Roese #define LZO_E_INPUT_NOT_CONSUMED (-8) 42*b1b4e89aSStefan Roese #define LZO_E_NOT_YET_IMPLEMENTED (-9) 43*b1b4e89aSStefan Roese 44*b1b4e89aSStefan Roese #endif 45