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2014-05-25liblzma: Add the internal function lzma_alloc_zero().Lasse Collin1-0/+21
2013-10-02liblzma: Add LZMA_FULL_BARRIER support to single-threaded encoder.Lasse Collin1-2/+15
In the single-threaded encoder LZMA_FULL_BARRIER is simply an alias for LZMA_FULL_FLUSH.
2012-12-14Make the progress indicator smooth in threaded mode.Lasse Collin1-0/+16
This adds lzma_get_progress() to liblzma and takes advantage of it in xz. lzma_get_progress() collects progress information from the thread-specific structures so that fairly accurate progress information is available to applications. Adding a new function seemed to be a better way than making the information directly available in lzma_stream (like total_in and total_out are) because collecting the information requires locking mutexes. It's waste of time to do it more often than the up to date information is actually needed by an application.
2012-07-17liblzma: Make the use of lzma_allocator const-correct.Lasse Collin1-5/+5
There is a tiny risk of causing breakage: If an application assigns lzma_stream.allocator to a non-const pointer, such code won't compile anymore. I don't know why anyone would do such a thing though, so in practice this shouldn't cause trouble. Thanks to Jan Kratochvil for the patch.
2011-05-17Add underscores to attributes (__attribute((__foo__))).Lasse Collin1-1/+1
2011-04-11liblzma: Add lzma_stream_encoder_mt() for threaded compression.Lasse Collin1-1/+8
This is the simplest method to do threading, which splits the uncompressed data into blocks and compresses them independently from each other. There's room for improvement especially to reduce the memory usage, but nevertheless, this is a good start.
2011-04-11liblzma: Use memzero() to initialize supported_actions[].Lasse Collin1-4/+2
This is cleaner and makes it simpler to add new members to lzma_action enumeration.
2010-10-23liblzma: Make lzma_code() check the reserved members in lzma_stream.Lasse Collin1-0/+14
If any of the reserved members in lzma_stream are non-zero or non-NULL, LZMA_OPTIONS_ERROR is returned. It is possible that a new feature in the future is indicated by just setting a reserved member to some other value, so the old liblzma version need to catch it as an unsupported feature.
2010-05-26Rename MIN() and MAX() to my_min() and my_max().Lasse Collin1-1/+1
This should avoid some minor portability issues.
2010-03-06Fix missing initialization in lzma_strm_init().Lasse Collin1-0/+1
With bad luck, lzma_code() could return LZMA_BUF_ERROR when it shouldn't. This has been here since the early days of liblzma. It got triggered by the modifications made to the xz tool in commit 18c10c30d2833f394cd7bce0e6a821044b15832f but only when decompressing .lzma files. Somehow I managed to miss testing that with Valgrind earlier. This fixes <http://bugs.gentoo.org/show_bug.cgi?id=305591>. Thanks to Rafał Mużyło for helping to debug it on IRC.
2009-11-14Fix a design error in liblzma API.Lasse Collin1-1/+19
Originally the idea was that using LZMA_FULL_FLUSH with Stream encoder would read the filter chain from the same array that was used to intialize the Stream encoder. Since most apps wouldn't use LZMA_FULL_FLUSH, most apps wouldn't need to keep the filter chain available after initializing the Stream encoder. However, due to my mistake, it actually required keeping the array always available. Since setting the new filter chain via the array used at initialization time is not a nice way to do it for a couple of reasons, this commit ditches it and introduces lzma_filters_update(). This new function replaces also the "persistent" flag used by LZMA2 (and to-be-designed Subblock filter), which was also an ugly thing to do. Thanks to Alexey Tourbin for reminding me about the problem that Stream encoder used to require keeping the filter chain allocated.
2009-04-13Put the interesting parts of XZ Utils into the public domain.Lasse Collin1-10/+3
Some minor documentation cleanups were made at the same time.
2009-02-13Changed how the version number is specified in various places.Lasse Collin1-1/+1
Now configure.ac will get the version number directly from src/liblzma/api/lzma/version.h. The intent is to reduce the number of places where the version number is duplicated. In future, support for displaying Git commit ID may be added too.
2009-02-02Modify LZMA_API macro so that it works on Windows withLasse Collin1-8/+8
other compilers than MinGW. This may hurt readability of the API headers slightly, but I don't know any better way to do this.
2009-01-20Use LZMA_PROG_ERROR in lzma_code() as documented in base.h.Lasse Collin1-16/+8
2009-01-19Fix handling of non-fatal errors in lzma_code().Lasse Collin1-1/+8
2008-12-15Bunch of liblzma API cleanups and fixes.Lasse Collin1-0/+58
2008-09-06Some API cleanupsLasse Collin1-0/+7
2008-08-28Sort of garbage collection commit. :-| Many things are stillLasse Collin1-17/+112
broken. API has changed a lot and it will still change a little more here and there. The command line tool doesn't have all the required changes to reflect the API changes, so it's easy to get "internal error" or trigger assertions.