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b2d7bd30d7
- AdjustLiz.sh fixes some double defines with zstd of lizard - lizard uses it's own entropy lib again - this will fix #302 Signed-off-by: Tino Reichardt <milky-7zip@mcmilk.de>
39 lines
1.5 KiB
Markdown
39 lines
1.5 KiB
Markdown
New Generation Entropy library
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==============================
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The __lib__ directory contains several files, but you don't necessarily want them all.
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Here is a detailed list, to help you decide which one you need :
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#### Compulsory files
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These files are required in all circumstances :
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- __error_public.h__ : error list as enum
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- __error_private.h__ : error management
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- __mem.h__ : low level memory access routines
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- __bitstream.h__ : generic read/write bitstream common to all entropy codecs
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- __entropy_common.c__ : common functions needed for both compression and decompression
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#### Finite State Entropy
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This is the base codec required by other ones.
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It implements a tANS variant, similar to arithmetic in compression performance, but much faster. Compression and decompression can be compiled independently.
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- __fse.h__ : exposes interfaces
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- __fse_compress.c__ : implements compression codec
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- __fse_decompress.c__ : implements decompression codec
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#### FSE 16-bits symbols version
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This codec is able to encode alphabets of size > 256, using 2 bytes per symbol. It requires the base FSE codec to compile properly. Compression and decompression are merged in the same file.
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- __fseU16.c__ implements the codec, while __fseU16.h__ exposes its interfaces.
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#### Huffman codec
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This is the fast huffman codec. It requires the base FSE codec to compress its headers. Compression and decompression can be compiled independently.
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- __huf.h__ : exposes interfaces.
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- __huf_compress.c__ : implements compression codec
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- __huf_decompress.c__ : implements decompression codec
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