mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-15 21:01:45 -05:00
22 lines
1.5 KiB
Markdown
22 lines
1.5 KiB
Markdown
|
LZ4 - Library Files
|
||
|
|
================================
|
||
|
|
|
||
|
|
The __lib__ directory contains several files, but you don't necessarily need them all.
|
||
|
|
|
||
|
|
To integrate fast LZ4 compression/decompression into your program, you basically just need "**lz4.c**" and "**lz4.h**".
|
||
|
|
|
||
|
|
For more compression at the cost of compression speed (while preserving decompression speed), use **lz4hc** on top of regular lz4. `lz4hc` only provides compression functions. It also needs `lz4` to compile properly.
|
||
|
|
|
||
|
|
If you want to produce files or data streams compatible with `lz4` command line utility, use **lz4frame**. This library encapsulates lz4-compressed blocks into the [official interoperable frame format]. In order to work properly, lz4frame needs lz4 and lz4hc, and also **xxhash**, which provides error detection algorithm.
|
||
|
|
(_Advanced stuff_ : It's possible to hide xxhash symbols into a local namespace. This is what `liblz4` does, to avoid symbol duplication in case a user program would link to several libraries containing xxhash symbols.)
|
||
|
|
|
||
|
|
A more complex "lz4frame_static.h" is also provided, although its usage is not recommended. It contains definitions which are not guaranteed to remain stable within future versions. Use for static linking ***only***.
|
||
|
|
|
||
|
|
The other files are not source code. There are :
|
||
|
|
|
||
|
|
- LICENSE : contains the BSD license text
|
||
|
|
- Makefile : script to compile or install lz4 library (static or dynamic)
|
||
|
|
- liblz4.pc.in : for pkg-config (make install)
|
||
|
|
|
||
|
|
[official interoperable frame format]: ../lz4_Frame_format.md
|