xz.git - XZ Utils

Age	Commit message (Collapse)	Author	Files	Lines
2008-06-01	Fix a buffer overflow in the LZMA encoder. It was due to my	Lasse Collin	1	-178/+205
	misunderstanding of the code. There's no tiny fix for this problem, so I also cleaned up the code in general. This reduces the speed of the encoder 2-5 % in the fastest compression mode ("lzma -1"). High compression modes should have no noticeable performance difference. This commit breaks things (especially LZMA_SYNC_FLUSH) but I will fix them once the new format and LZMA2 has been roughly implemented. Plain LZMA won't support LZMA_SYNC_FLUSH at all and won't be supported in the new .lzma format. This may change still but this is what it looks like now. Support for known uncompressed size (that is, LZMA or LZMA2 without EOPM) is likely to go away. This means there will be API changes.
2008-04-24	Switch to uint16_t as the type of range coder probabilities.	Lasse Collin	1	-6/+19

2008-04-24	Use 64-bit integer as range encoder's cache size. This fixes a	Lasse Collin	1	-1/+1
	theoretical data corruption, which should be very hard to trigger even intentionally.
2008-03-24	Replaced the range decoder optimization that used arithmetic	Lasse Collin	1	-37/+16
	right shift with as fast version that doesn't need arithmetic right shift. Removed the related check from configure.ac.
2008-03-22	Take advantage of arithmetic right shift in range decoder.	Lasse Collin	1	-15/+37

2008-01-15	Omit invalid space from printf() format string	Lasse Collin	1	-1/+1
	in price_table_gen.c.
2008-01-15	Convert bittree_get_price() and bittree_reverse_get_price()	Lasse Collin	1	-33/+43
	from macros to inline functions.
2008-01-15	Added precomputed range coder probability price table.	Lasse Collin	6	-15/+150

2008-01-14	Major changes to LZ encoder, LZMA encoder, and range encoder.	Lasse Collin	1	-84/+33
	These changes implement support for LZMA_SYNC_FLUSH in LZMA encoder, and move the temporary buffer needed by range encoder from lzma_range_encoder structure to lzma_lz_encoder.
2008-01-04	Moved range decoder initialization (reading the first	Lasse Collin	1	-27/+60
	five input bytes) from LZMA decoder to range decoder header. Did the same for decoding of direct bits.
2007-12-09	Imported to git.	Lasse Collin	5	-0/+648