xref: /freebsd/sys/dev/cxgbe/cudbg/fastlz.h (revision c68eed82a3dcadf0c826e9e150f59769f4c44f24)
1 /*
2    FastLZ - lightning-fast lossless compression library
3 
4    Copyright (C) 2007 Ariya Hidayat (ariya@kde.org)
5    Copyright (C) 2006 Ariya Hidayat (ariya@kde.org)
6    Copyright (C) 2005 Ariya Hidayat (ariya@kde.org)
7 
8    Permission is hereby granted, free of charge, to any person obtaining a copy
9    of this software and associated documentation files (the "Software"), to deal
10    in the Software without restriction, including without limitation the rights
11    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12    copies of the Software, and to permit persons to whom the Software is
13    furnished to do so, subject to the following conditions:
14 
15    The above copyright notice and this permission notice shall be included in
16    all copies or substantial portions of the Software.
17 
18    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24    THE SOFTWARE.
25    */
26 #ifndef FASTLZ_H
27 #define FASTLZ_H
28 
29 #define FASTLZ_VERSION 0x000100
30 
31 #define FASTLZ_VERSION_MAJOR	 0
32 #define FASTLZ_VERSION_MINOR	 0
33 #define FASTLZ_VERSION_REVISION  0
34 
35 #define FASTLZ_VERSION_STRING "0.1.0"
36 
37 struct cudbg_buffer;
38 
39 int fastlz_compress(const void *input, int length, void *output);
40 int fastlz_compress_level(int level, const void *input, int length,
41 			  void *output);
42 int fastlz_decompress(const void *input, int length, void *output, int maxout);
43 
44 /* prototypes */
45 
46 int write_magic(struct cudbg_buffer *);
47 int detect_magic(struct cudbg_buffer *);
48 
49 int write_to_buf(void *, u32, u32 *, void *, u32);
50 int read_from_buf(void *, u32, u32 *, void *,  u32);
51 
52 int write_chunk_header(struct cudbg_buffer *, int, int, unsigned long,
53 		       unsigned long, unsigned long);
54 
55 int read_chunk_header(struct cudbg_buffer *, int* , int*, unsigned long*,
56 		      unsigned long*, unsigned long*);
57 
58 unsigned long block_compress(const unsigned char *, unsigned long length,
59 			     unsigned char *);
60 #endif /* FASTLZ_H */
61