============================================================================ miniLZO -- mini subset of the LZO real-time data compression library ============================================================================ Author : Markus Franz Xaver Johannes Oberhumer <> Version : 2.08 Date : 29 Jun 2014 I've created miniLZO for projects where it is inconvenient to include (or require) the full LZO source code just because you want to add a little bit of data compression to your application. miniLZO implements the LZO1X-1 compressor and both the standard and safe LZO1X decompressor. Apart from fast compression it also useful for situations where you want to use pre-compressed data files (which must have been compressed with LZO1X-999). miniLZO consists of one C source file and three header files: minilzo.c minilzo.h, lzoconf.h, lzodefs.h To use miniLZO just copy these files into your source directory, add minilzo.c to your Makefile and #include minilzo.h from your program. Note: you also must distribute this file ('README.LZO') with your project. minilzo.o compiles to about 6 KiB (using gcc or Visual C on an i386), and the sources are about 30 KiB when packed with zip - so there's no more excuse that your application doesn't support data compression :-) For more information, documentation, example programs and other support files (like Makefiles and build scripts) please download the full LZO package from Have fun, Markus P.S. minilzo.c is generated automatically from the LZO sources and therefore functionality is completely identical Appendix A: building miniLZO ---------------------------- miniLZO is written such a way that it should compile and run out-of-the-box on most machines. If you are running on a very unusual architecture and lzo_init() fails then you should first recompile with '-DLZO_DEBUG' to see what causes the failure. The most probable case is something like 'sizeof(void *) != sizeof(size_t)'. After identifying the problem you can compile by adding some defines like '-DSIZEOF_VOID_P=8' to your Makefile. The best solution is (of course) using Autoconf - if your project uses Autoconf anyway just add '-DMINILZO_HAVE_CONFIG_H' to your compiler flags when compiling minilzo.c. See the LZO distribution for an example how to set up Appendix B: list of public functions available in miniLZO --------------------------------------------------------- Library initialization lzo_init() Compression lzo1x_1_compress() Decompression lzo1x_decompress() lzo1x_decompress_safe() Checksum functions lzo_adler32() Version functions lzo_version() lzo_version_string() lzo_version_date() Portable (but slow) string functions lzo_memcmp() lzo_memcpy() lzo_memmove() lzo_memset() Appendix C: suggested macros for '' when using Autoconf ------------------------------------------------------------------- Checks for typedefs and structures AC_CHECK_TYPE(ptrdiff_t,long) AC_TYPE_SIZE_T AC_CHECK_SIZEOF(short) AC_CHECK_SIZEOF(int) AC_CHECK_SIZEOF(long) AC_CHECK_SIZEOF(long long) AC_CHECK_SIZEOF(__int64) AC_CHECK_SIZEOF(void *) AC_CHECK_SIZEOF(size_t) AC_CHECK_SIZEOF(ptrdiff_t) Checks for compiler characteristics AC_C_CONST Checks for library functions AC_CHECK_FUNCS(memcmp memcpy memmove memset) Appendix D: Copyright --------------------- LZO and miniLZO are Copyright (C) 1996-2014 Markus Franz Xaver Oberhumer All Rights Reserved. LZO and miniLZO are distributed under the terms of the GNU General Public License (GPL). See the file COPYING. Special licenses for commercial and other applications which are not willing to accept the GNU General Public License are available by contacting the author.