lzo.h

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#ifndef __LZO_H__
#define __LZO_H__
/*
 *  LZO Public Kernel Interface
 *  A mini subset of the LZO real-time data compression library
 *
 *  Copyright (C) 1996-2005 Markus F.X.J. Oberhumer <[email protected]>
 *
 *  The full LZO package can be found at:
 *  http://www.oberhumer.com/opensource/lzo/
 *
 *  Changed for kernel use by:
 *  Nitin Gupta <[email protected]>
 *  Richard Purdie <[email protected]>
 */

#define LZO1X_MEM_COMPRESS  (16384 * sizeof(unsigned char *))
#define LZO1X_1_MEM_COMPRESS    LZO1X_MEM_COMPRESS

#define lzo1x_worst_compress(x) ((x) + ((x) / 16) + 64 + 3)

/* This requires 'workmem' of size LZO1X_1_MEM_COMPRESS */
int lzo1x_1_compress(const unsigned char *src, size_t src_len,
            unsigned char *dst, size_t *dst_len, void *wrkmem);

/* safe decompression with overrun testing */
int lzo1x_decompress_safe(const unsigned char *src, size_t src_len,
            unsigned char *dst, size_t *dst_len);

/*
 * Return values (< 0 = Error)
 */
#define LZO_E_OK            0
#define LZO_E_ERROR         (-1)
#define LZO_E_OUT_OF_MEMORY     (-2)
#define LZO_E_NOT_COMPRESSIBLE      (-3)
#define LZO_E_INPUT_OVERRUN     (-4)
#define LZO_E_OUTPUT_OVERRUN        (-5)
#define LZO_E_LOOKBEHIND_OVERRUN    (-6)
#define LZO_E_EOF_NOT_FOUND     (-7)
#define LZO_E_INPUT_NOT_CONSUMED    (-8)
#define LZO_E_NOT_YET_IMPLEMENTED   (-9)

#endif