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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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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 | * | |
8b975bd3 | 8 | * Copyright (C) 1996-2012 Markus F.X.J. Oberhumer <markus@oberhumer.com> |
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9 | * |
10 | * The full LZO package can be found at: | |
11 | * http://www.oberhumer.com/opensource/lzo/ | |
12 | * | |
8b975bd3 | 13 | * Changed for Linux kernel use by: |
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14 | * Nitin Gupta <nitingupta910@gmail.com> |
15 | * Richard Purdie <rpurdie@openedhand.com> | |
16 | */ | |
17 | ||
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18 | #define LZO1X_1_MEM_COMPRESS (8192 * sizeof(unsigned short)) |
19 | #define LZO1X_MEM_COMPRESS LZO1X_1_MEM_COMPRESS | |
64c70b1c | 20 | |
5ee4014a | 21 | #define lzo1x_worst_compress(x) ((x) + ((x) / 16) + 64 + 3 + 2) |
64c70b1c | 22 | |
8b975bd3 | 23 | /* This requires 'wrkmem' of size LZO1X_1_MEM_COMPRESS */ |
64c70b1c | 24 | int lzo1x_1_compress(const unsigned char *src, size_t src_len, |
8b975bd3 | 25 | unsigned char *dst, size_t *dst_len, void *wrkmem); |
64c70b1c | 26 | |
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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 | ||
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31 | /* safe decompression with overrun testing */ |
32 | int lzo1x_decompress_safe(const unsigned char *src, size_t src_len, | |
8b975bd3 | 33 | unsigned char *dst, size_t *dst_len); |
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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) | |
8b975bd3 | 48 | #define LZO_E_INVALID_ARGUMENT (-10) |
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49 | |
50 | #endif |