Linux Kernel  3.7.1
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lzo.h
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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 <[email protected]>
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 <[email protected]>
14  * Richard Purdie <[email protected]>
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 /*
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 
44 #endif