1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef __LZO_H__ |
3 | #define __LZO_H__ |
4 | /* |
5 | * LZO Public Kernel Interface |
6 | * A mini subset of the LZO real-time data compression library |
7 | * |
8 | * Copyright (C) 1996-2012 Markus F.X.J. Oberhumer <markus@oberhumer.com> |
9 | * |
10 | * The full LZO package can be found at: |
11 | * http://www.oberhumer.com/opensource/lzo/ |
12 | * |
13 | * Changed for Linux kernel use by: |
14 | * Nitin Gupta <nitingupta910@gmail.com> |
15 | * Richard Purdie <rpurdie@openedhand.com> |
16 | */ |
17 | |
18 | #define LZO1X_1_MEM_COMPRESS (8192 * sizeof(unsigned short)) |
19 | #define LZO1X_MEM_COMPRESS LZO1X_1_MEM_COMPRESS |
20 | |
21 | #define lzo1x_worst_compress(x) ((x) + ((x) / 16) + 64 + 3 + 2) |
22 | |
23 | /* This requires 'wrkmem' of size LZO1X_1_MEM_COMPRESS */ |
24 | int lzo1x_1_compress(const unsigned char *src, size_t src_len, |
25 | unsigned char *dst, size_t *dst_len, void *wrkmem); |
26 | |
27 | /* This requires 'wrkmem' of size LZO1X_1_MEM_COMPRESS */ |
28 | int lzorle1x_1_compress(const unsigned char *src, size_t src_len, |
29 | unsigned char *dst, size_t *dst_len, void *wrkmem); |
30 | |
31 | /* safe decompression with overrun testing */ |
32 | int lzo1x_decompress_safe(const unsigned char *src, size_t src_len, |
33 | unsigned char *dst, size_t *dst_len); |
34 | |
35 | /* |
36 | * Return values (< 0 = Error) |
37 | */ |
38 | #define LZO_E_OK 0 |
39 | #define LZO_E_ERROR (-1) |
40 | #define LZO_E_OUT_OF_MEMORY (-2) |
41 | #define LZO_E_NOT_COMPRESSIBLE (-3) |
42 | #define LZO_E_INPUT_OVERRUN (-4) |
43 | #define LZO_E_OUTPUT_OVERRUN (-5) |
44 | #define LZO_E_LOOKBEHIND_OVERRUN (-6) |
45 | #define LZO_E_EOF_NOT_FOUND (-7) |
46 | #define LZO_E_INPUT_NOT_CONSUMED (-8) |
47 | #define LZO_E_NOT_YET_IMPLEMENTED (-9) |
48 | #define LZO_E_INVALID_ARGUMENT (-10) |
49 | |
50 | #endif |
51 | |