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) 1996-2012 Markus F.X.J. Oberhumer <markus@oberhumer.com>
8 *
9 *  The full LZO package can be found at:
10 *  http://www.oberhumer.com/opensource/lzo/
11 *
12 *  Changed for Linux kernel use by:
13 *  Nitin Gupta <nitingupta910@gmail.com>
14 *  Richard Purdie <rpurdie@openedhand.com>
15 */
16
17#define LZO1X_1_MEM_COMPRESS	(8192 * sizeof(unsigned short))
18#define LZO1X_MEM_COMPRESS	LZO1X_1_MEM_COMPRESS
19
20#define lzo1x_worst_compress(x) ((x) + ((x) / 16) + 64 + 3)
21
22/* This requires 'wrkmem' of size LZO1X_1_MEM_COMPRESS */
23int 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 */
27int lzo1x_decompress_safe(const unsigned char *src, size_t src_len,
28			  unsigned char *dst, size_t *dst_len);
29
30/*
31 * Return values (< 0 = Error)
32 */
33#define LZO_E_OK			0
34#define LZO_E_ERROR			(-1)
35#define LZO_E_OUT_OF_MEMORY		(-2)
36#define LZO_E_NOT_COMPRESSIBLE		(-3)
37#define LZO_E_INPUT_OVERRUN		(-4)
38#define LZO_E_OUTPUT_OVERRUN		(-5)
39#define LZO_E_LOOKBEHIND_OVERRUN	(-6)
40#define LZO_E_EOF_NOT_FOUND		(-7)
41#define LZO_E_INPUT_NOT_CONSUMED	(-8)
42#define LZO_E_NOT_YET_IMPLEMENTED	(-9)
43#define LZO_E_INVALID_ARGUMENT		(-10)
44
45#endif
46