diff options
author | Rémi Verschelde <rverschelde@gmail.com> | 2017-04-28 18:29:15 +0200 |
---|---|---|
committer | Rémi Verschelde <rverschelde@gmail.com> | 2017-04-28 21:19:23 +0200 |
commit | 2398eb6ed4832fd7b8eec778981cbd974b89634f (patch) | |
tree | e68c8db6c58fa993a0196f4f663a0064c4b17390 /thirdparty/misc/fastlz.h | |
parent | 0a613ff9707634fcb93a009813bbbad040a4d6d8 (diff) |
Move core thirdparty files to thirdparty/{minizip,misc}
Diffstat (limited to 'thirdparty/misc/fastlz.h')
-rw-r--r-- | thirdparty/misc/fastlz.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/thirdparty/misc/fastlz.h b/thirdparty/misc/fastlz.h new file mode 100644 index 0000000000..e5ca8dfc02 --- /dev/null +++ b/thirdparty/misc/fastlz.h @@ -0,0 +1,100 @@ +/* + FastLZ - lightning-fast lossless compression library + + Copyright (C) 2007 Ariya Hidayat (ariya@kde.org) + Copyright (C) 2006 Ariya Hidayat (ariya@kde.org) + Copyright (C) 2005 Ariya Hidayat (ariya@kde.org) + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. +*/ + +#ifndef FASTLZ_H +#define FASTLZ_H + +#define FASTLZ_VERSION 0x000100 + +#define FASTLZ_VERSION_MAJOR 0 +#define FASTLZ_VERSION_MINOR 0 +#define FASTLZ_VERSION_REVISION 0 + +#define FASTLZ_VERSION_STRING "0.1.0" + +#if defined (__cplusplus) +extern "C" { +#endif + +/** + Compress a block of data in the input buffer and returns the size of + compressed block. The size of input buffer is specified by length. The + minimum input buffer size is 16. + + The output buffer must be at least 5% larger than the input buffer + and can not be smaller than 66 bytes. + + If the input is not compressible, the return value might be larger than + length (input buffer size). + + The input buffer and the output buffer can not overlap. +*/ + +int fastlz_compress(const void* input, int length, void* output); + +/** + Decompress a block of compressed data and returns the size of the + decompressed block. If error occurs, e.g. the compressed data is + corrupted or the output buffer is not large enough, then 0 (zero) + will be returned instead. + + The input buffer and the output buffer can not overlap. + + Decompression is memory safe and guaranteed not to write the output buffer + more than what is specified in maxout. + */ + +int fastlz_decompress(const void* input, int length, void* output, int maxout); + +/** + Compress a block of data in the input buffer and returns the size of + compressed block. The size of input buffer is specified by length. The + minimum input buffer size is 16. + + The output buffer must be at least 5% larger than the input buffer + and can not be smaller than 66 bytes. + + If the input is not compressible, the return value might be larger than + length (input buffer size). + + The input buffer and the output buffer can not overlap. + + Compression level can be specified in parameter level. At the moment, + only level 1 and level 2 are supported. + Level 1 is the fastest compression and generally useful for short data. + Level 2 is slightly slower but it gives better compression ratio. + + Note that the compressed data, regardless of the level, can always be + decompressed using the function fastlz_decompress above. +*/ + +int fastlz_compress_level(int level, const void* input, int length, void* output); + +#if defined (__cplusplus) +} +#endif + +#endif /* FASTLZ_H */ |