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2008-01-19Implemented LZMA_SYNC_FLUSH support to the Subblock encoder.Lasse Collin2-78/+214
The API for handing Subfilters was changed to make it consistent with LZMA_SYNC_FLUSH. A few sanity checks were added for Subfilter handling. Some small bugs were fixed. More comments were added.
2008-01-19Revised the Delta filter implementation. The initializationLasse Collin10-200/+363
function is still shared between encoder and decoder, but the actual coding is in separate files for encoder and decoder. There are now separate functions for the actual delta calculation depending on if Delta is the last filter in the chain or not. If it is the last, the new code copies the data from input to output buffer and does the delta calculation at the same time. The old code first copied the data, then did the delta in the target buffer, which required reading through the data twice. Support for LZMA_SYNC_FLUSH was added to the Delta encoder. This doesn't change anything in the file format.
2008-01-18Fix LZMA_SYNC_FLUSH handling in LZ and LZMA encoders.Lasse Collin3-33/+29
That code is now almost completely in LZ coder, where it can be shared with other LZ77-based algorithms in future.
2008-01-17Subblock decoder: Don't exit the main loop in decode_buffer()Lasse Collin1-133/+139
too early if we hit End of Input while decoding a Subblock of type Repeating Data. To keep the loop termination condition elegant, the order of enumerations in coder->sequence were changed. To keep the case-labels in roughly the same order as the enumerations in coder->sequence, large chunks of code was moved around. This made the diff big and ugly compared to the amount of the actual changes made.
2008-01-17Fix wrong too small size of argument unfiltered_maxLasse Collin1-1/+1
in ia64_coder_init(). It triggered assert() in simple_coder.c, and could have caused a buffer overflow. This error was probably a copypaste mistake, since most of the simple filters use unfiltered_max = 4.
2008-01-17Fix Subblock docoder: If Subblock filter was used with knownLasse Collin1-0/+6
Uncompressed Size, and the last output byte was from RLE, the code didn't stop decoding as it should have done.
2008-01-16Plugged a memory leak in stream_decoder.c.Lasse Collin1-0/+20
2008-01-16Added lzma_memlimit_count().Lasse Collin2-0/+29
2008-01-16Make Uncompresed Size validation more strictLasse Collin1-1/+2
in alone_decoder.c.
2008-01-15Use fastpos.h when encoding LZMA dictionary size inLasse Collin1-21/+19
Filter Flags encoder.
2008-01-15Revised the fastpos code. It now uses the slightly fasterLasse Collin10-47/+746
table-based version from LZMA SDK 4.57. This should be fast on most systems. A simpler and smaller alternative version is also provided. On some CPUs this can be even a little faster than the default table-based version (see comments in fastpos.h), but on most systems the table-based code is faster.
2008-01-15Added bsr.h.Lasse Collin2-0/+62
2008-01-15Omit invalid space from printf() format stringLasse Collin1-1/+1
in price_table_gen.c.
2008-01-15Removed a few unused macros from lzma_common.h.Lasse Collin1-6/+2
2008-01-15Fix a typo in lzma_encoder.c.Lasse Collin1-1/+1
2008-01-15Convert bittree_get_price() and bittree_reverse_get_price()Lasse Collin3-55/+56
from macros to inline functions.
2008-01-15Fix CRC code in case --enable-small is used.Lasse Collin4-6/+2
2008-01-15Added precomputed range coder probability price table.Lasse Collin7-17/+153
2008-01-14Remove RC_BUFFER_SIZE from lzma_encoder_private.hLasse Collin1-2/+4
and replace it with a sanity check.
2008-01-14Major changes to LZ encoder, LZMA encoder, and range encoder.Lasse Collin4-140/+206
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.
2008-01-14Don't use coder->lz.stream_end_was_reached in assertionsLasse Collin1-2/+0
in match_c.h.
2008-01-14In lzma_read_match_distances(), don't useLasse Collin1-3/+3
coder->lz.stream_end_was_reached. That variable will be removed, and the check isn't required anyway. Rearrange the check so that it doesn't make one to think that there could be an integer overflow.
2008-01-14Small LZMA_SYNC_FLUSH fixes to Block and Single-Stream encoders.Lasse Collin2-2/+3
2008-01-14More fixes to LZMA decoder's flush marker handling.Lasse Collin1-22/+30
2008-01-10Eliminate lzma_lz_encoder.must_move_pos. It's neededLasse Collin2-8/+2
only in one place which isn't performance criticial.
2008-01-08Take advantage of return_if_error() in block_decoder.c.Lasse Collin1-16/+7
2008-01-08Fix decoding of Blocks that have only Block Header.Lasse Collin1-23/+14
2008-01-08Fixed encoding of empty files. Arguments to is_size_valid()Lasse Collin1-1/+1
were in wrong order in block_encoder.c.
2008-01-08More pre-C99 inttypes.h compatibility fixes. Now the codeLasse Collin4-18/+6
should work even if the system has no inttypes.h.
2008-01-06Introduced compatibility with systems that have pre-C99Lasse Collin9-30/+28
or no inttypes.h. This is useful when the compiler has good enough support for C99, but libc headers don't. Changed liblzma API so that sys/types.h and inttypes.h have to be #included before #including lzma.h. On systems that don't have C99 inttypes.h, it's the problem of the applications to provide the required types and macros before #including lzma.h. If lzma.h defined the missing types and macros, it could conflict with third-party applications whose configure has detected that the types are missing and defined them in config.h already. An alternative would have been introducing lzma_uint32 and similar types, but that would just be an extra pain on modern systems.
2008-01-05Fix typo in comment (INT64_MAX -> UINT64_MAX).Lasse Collin1-1/+1
2008-01-05Another bug fix for flush marker detection.Lasse Collin1-1/+9
2008-01-04Fix stupid bugs in flush marker detection.Lasse Collin1-3/+4
2008-01-04Added support for flush marker, which will be in filesLasse Collin2-117/+104
that use LZMA_SYNC_FLUSH with encoder (not implemented yet). This is a new feature in the raw LZMA format, which isn't supported by old decoders. This shouldn't be a problem in practice, since lzma_alone_encoder() will not allow LZMA_SYNC_FLUSH, and thus not allow creating files on decodable with old decoders. Made lzma_decoder.c to require tab width of 4 characters if one wants to fit the code in 80 columns. This makes the code easier to read.
2008-01-04Moved range decoder initialization (reading the firstLasse Collin2-63/+66
five input bytes) from LZMA decoder to range decoder header. Did the same for decoding of direct bits.
2007-12-14Use the filename suffix .S instead of .s for assembler filesLasse Collin3-2/+2
so that the preprocessor removes the /* */ style comments, which are not supported by some non-GNU assemblers (Solaris) that otherwise work with this code.
2007-12-14Fixed wrong symbol name in crc64_x86.s.Lasse Collin1-1/+1
2007-12-14Use .globl instead of .global in x86 assembler code forLasse Collin2-2/+2
better portability. Still needs fixing the commenting.
2007-12-11Removed uncompressed size tracking from Delta encoder too.Lasse Collin1-18/+3
2007-12-11Remove uncompressed size tracking from the filter encoders.Lasse Collin3-80/+12
It's not strictly needed there, and just complicates the code. LZ encoder never even had this feature. The primary reason to have uncompressed size tracking in filter encoders was validating that the application doesn't give different amount of input that it had promised. A side effect was to validate internal workings of liblzma. Uncompressed size tracking is still present in the Block encoder. Maybe it should be added to LZMA_Alone and raw encoders too. It's simpler to have one coder just to validate the uncompressed size instead of having it in every filter.
2007-12-11Fixed wrong type of flags_size in Subblock encoder.Lasse Collin1-1/+1
2007-12-10Bumped version number to 4.42.3alpha.Lasse Collin1-1/+1
2007-12-09Added LZMA_SYNC_FLUSH support to the Copy filter.Lasse Collin1-35/+57
2007-12-09Added missing LZMA_API to the C versions of the CRC functions.Lasse Collin2-2/+2
The x86 assembler versions were already OK.
2007-12-09Take advantage of return_if_error() macro in more places.Lasse Collin7-138/+63
Cleaned Subblock filter's initialization code too.
2007-12-09Re-enabled the security checks in Subblock decoderLasse Collin1-3/+3
that were disabled for debugging reasons.
2007-12-09Imported to git.Lasse Collin158-0/+25171