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@ -36,6 +36,15 @@ Known bugs |
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Missing features |
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---------------- |
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Add support for storing metadata in .xz files. A preliminary |
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idea is to create a new Stream type for metadata. When both |
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metadata and data are wanted in the same .xz file, two or more |
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Streams would be concatenated. |
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The state stored in lzma_stream should be cloneable, which would |
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be mostly useful when using a preset dictionary in LZMA2, but |
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it may have other uses too. Compare to deflateCopy() in zlib. |
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Support LZMA_FINISH in raw decoder to indicate end of LZMA1 and |
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other streams that don't have an end of payload marker. |
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@ -68,14 +77,35 @@ Missing features |
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This is tricky, because the same error codes are used with |
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slightly different meanings, and this cannot be fixed anymore. |
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Make it possible to adjust LZMA2 options in the middle of a Block |
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so that the encoding speed vs. compression ratio can be optimized |
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when the compressed data is streamed over network. |
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Improved BCJ filters. The current filters are small but they aren't |
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so great when compressing binary packages that contain various file |
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types. Specifically, they make things worse if there are static |
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libraries or Linux kernel modules. The filtering could also be |
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more effective (without getting overly complex), for example, |
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streamable variant BCJ2 from 7-Zip could be implemented. |
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Filter that autodetects specific data types in the input stream |
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and applies appropriate filters for the corrects parts of the input. |
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Perhaps combine this with the BCJ filter improvement point above. |
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Long-range LZ77 method as a separate filter or as a new LZMA2 |
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match finder. |
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Documentation |
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------------- |
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Some tutorial is needed for liblzma. I have planned to write some |
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extremely well commented example programs, which would work as |
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a tutorial. I suppose the Doxygen tags are quite OK as a quick |
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reference once one is familiar with the liblzma API. |
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More tutorial programs are needed for liblzma. |
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Document the LZMA1 and LZMA2 algorithms. |
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Miscellaneous |
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------------ |
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Try to get the media type for .xz registered at IANA. |
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