ddn.lib.lzma

Low-level D bindings for liblzma — the XZ Utils compression library.

Overview:

This module provides comprehensive D bindings to liblzma (version 5.x),

a general-purpose data compression library with a zlib-like API. The native file format is .xz, but the legacy .lzma format and raw streams are also supported. LZMA2 is the primary filter.

The bindings cover the stable public API from lzma.h and its

subheaders: version.h, base.h, vli.h, check.h, filter.h, lzma12.h, container.h, stream_flags.h, and hardware.h.

Main_Features:

  • Single-call and streaming .xz Stream encoding and decoding
  • Legacy .lzma (alone) encoder and decoder
  • Auto-detecting decoder (.xz, .lzma, .lz)
  • Multithreaded encoder (lzma_mt) and decoder
  • Integrity checks: CRC32, CRC64, SHA-256, or none
  • Filter chain support (lzma_filter, LZMA1/LZMA2 options)
  • Memory usage estimation and limits
  • Hardware queries: physical memory and CPU thread count

Quick_Start:

Compressing and decompressing a buffer with the C API:

import ddn.lib.lzma;

ubyte[] data = cast(ubyte[])"Hello, LZMA!";

// Compress with the single-call buffer encoder.
size_t bound = lzma_stream_buffer_bound(data.length);
ubyte[] compressed = new ubyte[bound];
size_t outPos = 0;
lzma_filter[2] filters = [
   lzma_filter(LZMA_FILTER_LZMA2, null),
   lzma_filter(LZMA_VLI_UNKNOWN, null)
];
lzma_options_lzma opts;
lzma_lzma_preset(&opts, LZMA_PRESET_DEFAULT);
filters[0].options = &opts;
lzma_stream_buffer_encode(filters.ptr, LZMA_CHECK_CRC64, null,
      data.ptr, data.length, compressed.ptr, &outPos, compressed.length);

// Decompress with the single-call buffer decoder.
ubyte[] restored = new ubyte[data.length];
size_t inPos = 0;
size_t restoredPos = 0;
ulong memlimit = ulong.max;
lzma_stream_buffer_decode(&memlimit, 0, null,
      compressed.ptr, &inPos, outPos,
      restored.ptr, &restoredPos, restored.length);

See Also

License

BSD-3-Clause

Copyright

© 2026 DDN (D Developer Network) Members
var LZMA_CHECK_ID_MAX LZMA_CHECK_SIZE_MAX LZMA_CONCATENATED LZMA_DICT_SIZE_DEFAULT LZMA_DICT_SIZE_MIN LZMA_FAIL_FAST LZMA_FILTER_ARM LZMA_FILTER_ARM64 LZMA_FILTER_ARMTHUMB LZMA_FILTER_DELTA LZMA_FILTER_IA64 LZMA_FILTER_LZMA1 LZMA_FILTER_LZMA1EXT LZMA_FILTER_LZMA2 LZMA_FILTER_POWERPC LZMA_FILTER_SPARC LZMA_FILTER_X86 LZMA_FILTERS_MAX LZMA_IGNORE_CHECK LZMA_LC_DEFAULT LZMA_LCLP_MAX LZMA_LCLP_MIN LZMA_LP_DEFAULT LZMA_LZMA1EXT_ALLOW_EOPM LZMA_PB_DEFAULT LZMA_PB_MAX LZMA_PB_MIN LZMA_PRESET_DEFAULT LZMA_PRESET_EXTREME LZMA_PRESET_LEVEL_MASK LZMA_STREAM_HEADER_SIZE LZMA_STREAM_INIT LZMA_TELL_ANY_CHECK LZMA_TELL_NO_CHECK LZMA_TELL_UNSUPPORTED_CHECK LZMA_VERSION LZMA_VERSION_MAJOR LZMA_VERSION_MINOR LZMA_VERSION_PATCH LZMA_VLI_BYTES_MAX LZMA_VLI_MAX LZMA_VLI_UNKNOWN
alias lzma_alloc_function lzma_bool lzma_free_function lzma_internal lzma_vli
enum lzma_action lzma_check lzma_match_finder lzma_mode lzma_reserved_enum lzma_ret
struct lzma_allocator lzma_filter lzma_internal_s lzma_mt lzma_options_lzma lzma_stream lzma_stream_flags
class LzmaError
fn isLzmaError lzma_alone_decoder lzma_alone_encoder lzma_auto_decoder lzma_check_is_supported lzma_check_size lzma_code lzma_cputhreads lzma_crc32 lzma_crc64 lzma_easy_buffer_encode lzma_easy_decoder_memusage lzma_easy_encoder lzma_easy_encoder_memusage lzma_end lzma_filter_decoder_is_supported lzma_filter_encoder_is_supported lzma_filter_flags_decode lzma_filter_flags_encode lzma_filter_flags_size lzma_filters_copy lzma_filters_free lzma_filters_update lzma_get_check lzma_get_progress lzma_lzip_decoder lzma_lzma_preset lzma_memlimit_get lzma_memlimit_set lzma_memusage lzma_mf_is_supported lzma_microlzma_decoder lzma_microlzma_encoder lzma_mode_is_supported lzma_mt_block_size lzma_physmem lzma_properties_decode lzma_properties_encode lzma_properties_size lzma_raw_buffer_decode lzma_raw_buffer_encode lzma_raw_decoder lzma_raw_decoder_memusage lzma_raw_encoder lzma_raw_encoder_memusage lzma_stream_buffer_bound lzma_stream_buffer_decode lzma_stream_buffer_encode lzma_stream_decoder lzma_stream_decoder_mt lzma_stream_encoder lzma_stream_encoder_mt lzma_stream_encoder_mt_memusage lzma_stream_flags_compare lzma_stream_footer_decode lzma_stream_footer_encode lzma_stream_header_decode lzma_stream_header_encode lzma_version_number lzma_version_string LZMA_VLI_C lzma_vli_decode lzma_vli_encode lzma_vli_size lzmaCheckIsSupported lzmaCheckSize lzmaCputhreads lzmaErrorName lzmaPhysmem lzmaStreamBufferBound lzmaVersion lzmaVersionNumber makeLzmaOptions

Types 19

aliaslzma_bool = ubyte

Boolean type used by liblzma (C89 compatible unsigned char).

enumlzma_reserved_enum

Reserved enumeration type used as ABI padding inside liblzma structs.

LZMA_RESERVED_ENUM = 0
enumlzma_ret

Return values used by most functions in liblzma.

Member names are kept identical to the C enum to match the upstream documentation and error strings.

LZMA_OK = 0
LZMA_STREAM_END = 1
LZMA_NO_CHECK = 2
LZMA_UNSUPPORTED_CHECK = 3
LZMA_GET_CHECK = 4
LZMA_MEM_ERROR = 5
LZMA_MEMLIMIT_ERROR = 6
LZMA_FORMAT_ERROR = 7
LZMA_OPTIONS_ERROR = 8
LZMA_DATA_ERROR = 9
LZMA_BUF_ERROR = 10
LZMA_PROG_ERROR = 11
LZMA_SEEK_NEEDED = 12
LZMA_RET_INTERNAL1 = 101
LZMA_RET_INTERNAL2 = 102
LZMA_RET_INTERNAL3 = 103
LZMA_RET_INTERNAL4 = 104
LZMA_RET_INTERNAL5 = 105
LZMA_RET_INTERNAL6 = 106
LZMA_RET_INTERNAL7 = 107
LZMA_RET_INTERNAL8 = 108
enumlzma_action

The action argument for lzma_code().

Member names match the C enum.

LZMA_RUN = 0
LZMA_SYNC_FLUSH = 1
LZMA_FULL_FLUSH = 2
LZMA_FULL_BARRIER = 4
LZMA_FINISH = 3
aliaslzma_vli = ulong

Variable-length integer type used by liblzma.

enumlzma_check

Type of the integrity check (Check ID) stored in an .xz stream.

Member names match the C enum.

LZMA_CHECK_NONE = 0
LZMA_CHECK_CRC32 = 1
LZMA_CHECK_CRC64 = 4
LZMA_CHECK_SHA256 = 10
aliaslzma_alloc_function = void * function(void * opaque, size_t nmemb, size_t size)

Custom allocation function signature used by lzma_allocator.

aliaslzma_free_function = void function(void * opaque, void * ptr)

Custom free function signature used by lzma_allocator.

structlzma_allocator

Custom memory allocator hooks.

Pass null for both functions to use the default malloc/free.

Fields
lzma_alloc_function allocCustom allocation function, or `null` for default `malloc`.
lzma_free_function freeCustom free function, or `null` for default `free`.
void * opaqueOpaque pointer passed as the first argument to the hooks.
structlzma_internal_s

Opaque internal state used by liblzma. Contents are not part of the ABI.

aliaslzma_internal = lzma_internal_s

Alias matching the C lzma_internal typedef.

structlzma_stream

Passing data to and from liblzma.

This is the central streaming structure used by lzma_easy_encoder, lzma_stream_decoder, lzma_code, and friends. It is initialised with LZMA_STREAM_INIT before being passed to any liblzma function.

Fields
const(uint8_t) * next_inPointer to the next input byte.
size_t avail_inNumber of available input bytes in `next_in`.
uint64_t total_inTotal number of input bytes read by liblzma so far.
uint8_t * next_outPointer to the next output position.
size_t avail_outAmount of free space in `next_out`.
uint64_t total_outTotal number of output bytes written by liblzma so far.
const(lzma_allocator) * allocatorOptional custom allocator (use `null` for default).
lzma_internal * internalInternal state, opaque to applications.
void * reserved_ptr1Reserved pointer slot (do not use).
void * reserved_ptr2Reserved pointer slot (do not use).
void * reserved_ptr3Reserved pointer slot (do not use).
void * reserved_ptr4Reserved pointer slot (do not use).
uint64_t seek_posNew seek position when `lzma_code()` returns `LZMA_SEEK_NEEDED`.
uint64_t reserved_int2Reserved integer slot (do not use).
size_t reserved_int3Reserved integer slot (do not use).
size_t reserved_int4Reserved integer slot (do not use).
lzma_reserved_enum reserved_enum1Reserved enum slot (do not use).
lzma_reserved_enum reserved_enum2Reserved enum slot (do not use).
structlzma_filter

A single filter descriptor: an ID plus a pointer to its options.

Terminate filter arrays with lzma_filter(LZMA_VLI_UNKNOWN, null).

Fields
lzma_vli idFilter ID (one of the `LZMA_FILTER_*` constants), or `LZMA_VLI_UNKNOWN`.
void * optionsPointer to filter-specific options, or `null`.
enumlzma_match_finder

Match finder IDs.

Member names match the C enum.

LZMA_MF_HC3 = 0x03
LZMA_MF_HC4 = 0x04
LZMA_MF_BT2 = 0x12
LZMA_MF_BT3 = 0x13
LZMA_MF_BT4 = 0x14
enumlzma_mode

Compression mode IDs.

Member names match the C enum.

LZMA_MODE_FAST = 1
LZMA_MODE_NORMAL = 2
structlzma_options_lzma

Options shared by the LZMA1 and LZMA2 filters.

Use lzma_lzma_preset() to populate this struct from a compression preset before initialising an encoder.

Fields
uint32_t dict_sizeDictionary size in bytes.
const(uint8_t) * preset_dictOptional preset dictionary pointer (raw encode/decode only).
uint32_t preset_dict_sizeSize in bytes of `preset_dict`.
uint32_t lcNumber of literal context bits.
uint32_t lpNumber of literal position bits.
uint32_t pbNumber of position bits.
lzma_mode modeCompression mode (`LZMA_MODE_FAST` or `LZMA_MODE_NORMAL`).
uint32_t nice_lenNice length of a match.
lzma_match_finder mfMatch finder ID.
uint32_t depthMaximum search depth in the match finder.
uint32_t ext_flagsExtended flags for LZMA1EXT.
uint32_t ext_size_lowLow 32 bits of the extended uncompressed size (LZMA1EXT).
uint32_t ext_size_highHigh 32 bits of the extended uncompressed size (LZMA1EXT).
uint32_t reserved_int4
uint32_t reserved_int5
uint32_t reserved_int6
uint32_t reserved_int7
uint32_t reserved_int8
lzma_reserved_enum reserved_enum1
lzma_reserved_enum reserved_enum2
lzma_reserved_enum reserved_enum3
lzma_reserved_enum reserved_enum4
void * reserved_ptr1
void * reserved_ptr2
structlzma_stream_flags

Options for encoding/decoding the .xz Stream Header and Footer.

Fields
uint32_t version_Stream Flags format version (must be 0).
lzma_vli backward_sizeBackward Size, in bytes, of the Index (multiple of 4). Footer only.
lzma_check checkIntegrity Check ID stored in the header.
uint32_t reserved_enum1
uint32_t reserved_enum2
uint32_t reserved_int1
uint32_t reserved_int2
structlzma_mt

Multithreaded compression and decompression options.

Used by lzma_stream_encoder_mt() and lzma_stream_decoder_mt().

Fields
uint32_t flagsBitwise-or of zero or more decoder flags.
uint32_t threadsNumber of worker threads to use.
uint64_t block_sizeEncoder: maximum uncompressed size of a Block.
uint32_t timeoutTimeout in milliseconds (0 disables the timeout).
uint32_t presetEncoder: compression preset (ignored if `filters` is non-null).
const(lzma_filter) * filtersEncoder: filter chain (alternative to `preset`).
lzma_check checkEncoder: integrity check type.
lzma_reserved_enum reserved_enum1
lzma_reserved_enum reserved_enum2
lzma_reserved_enum reserved_enum3
uint32_t reserved_int1
uint32_t reserved_int2
uint32_t reserved_int3
uint32_t reserved_int4
uint64_t memlimit_threadingDecoder: memory limit used to choose the number of threads.
uint64_t memlimit_stopDecoder: hard memory usage limit.
uint64_t reserved_int7
uint64_t reserved_int8
void * reserved_ptr1
void * reserved_ptr2
void * reserved_ptr3
void * reserved_ptr4
classLzmaError : Error

Exception thrown by helper wrappers when a liblzma function fails.

It carries the original lzma_ret code for programmatic inspection.

Fields
lzma_ret codeThe underlying liblzma return code.
Constructors
this(string msg, lzma_ret code, string file = __FILE__, size_t line = __LINE__, Throwable next = null)

Functions 73

fnlzma_vli LZMA_VLI_C(T : ulong)(T n) pure @safe nothrow @nogcMacro-equivalent helper for constructing VLI literals at run time.
fnuint32_t lzma_version_number()
fnconst(char) * lzma_version_string()
fnlzma_ret lzma_code(lzma_stream * strm, lzma_action action)
fnvoid lzma_end(lzma_stream * strm)
fnvoid lzma_get_progress(const(lzma_stream) * strm, uint64_t * progress_in, uint64_t * progress_out)
fnuint64_t lzma_memusage(const(lzma_stream) * strm)
fnuint64_t lzma_memlimit_get(const(lzma_stream) * strm)
fnlzma_ret lzma_memlimit_set(lzma_stream * strm, uint64_t memlimit)
fnlzma_ret lzma_vli_encode(lzma_vli vli, size_t * vli_pos, uint8_t * out_, size_t * out_pos, size_t out_size)
fnlzma_ret lzma_vli_decode(lzma_vli * vli, size_t * vli_pos, const(uint8_t) * in_, size_t * in_pos, size_t in_size)
fnuint32_t lzma_vli_size(lzma_vli vli)
fnlzma_bool lzma_check_is_supported(lzma_check check)
fnuint32_t lzma_check_size(lzma_check check)
fnuint32_t lzma_crc32(const(uint8_t) * buf, size_t size, uint32_t crc)
fnuint64_t lzma_crc64(const(uint8_t) * buf, size_t size, uint64_t crc)
fnlzma_check lzma_get_check(const(lzma_stream) * strm)
fnuint64_t lzma_physmem()
fnuint32_t lzma_cputhreads()
fnlzma_bool lzma_filter_encoder_is_supported(lzma_vli id)
fnlzma_bool lzma_filter_decoder_is_supported(lzma_vli id)
fnlzma_ret lzma_filters_copy(const(lzma_filter) * filters, lzma_filter * dest, const(lzma_allocator) * allocator)
fnvoid lzma_filters_free(lzma_filter * filters, const(lzma_allocator) * allocator)
fnuint64_t lzma_raw_encoder_memusage(const(lzma_filter) * filters)
fnuint64_t lzma_raw_decoder_memusage(const(lzma_filter) * filters)
fnlzma_ret lzma_raw_encoder(lzma_stream * strm, const(lzma_filter) * filters)
fnlzma_ret lzma_raw_decoder(lzma_stream * strm, const(lzma_filter) * filters)
fnlzma_ret lzma_filters_update(lzma_stream * strm, const(lzma_filter) * filters)
fnlzma_ret lzma_raw_buffer_encode(const(lzma_filter) * filters, const(lzma_allocator) * allocator, const(uint8_t) * in_, size_t in_size, uint8_t * out_, size_t * out_pos, size_t out_size)
fnlzma_ret lzma_raw_buffer_decode(const(lzma_filter) * filters, const(lzma_allocator) * allocator, const(uint8_t) * in_, size_t * in_pos, size_t in_size, uint8_t * out_, size_t * out_pos, size_t out_size)
fnlzma_ret lzma_properties_size(uint32_t * size, const(lzma_filter) * filter)
fnlzma_ret lzma_properties_encode(const(lzma_filter) * filter, uint8_t * props)
fnlzma_ret lzma_properties_decode(lzma_filter * filter, const(lzma_allocator) * allocator, const(uint8_t) * props, size_t props_size)
fnlzma_ret lzma_filter_flags_size(uint32_t * size, const(lzma_filter) * filter)
fnlzma_ret lzma_filter_flags_encode(const(lzma_filter) * filter, uint8_t * out_, size_t * out_pos, size_t out_size)
fnlzma_ret lzma_filter_flags_decode(lzma_filter * filter, const(lzma_allocator) * allocator, const(uint8_t) * in_, size_t * in_pos, size_t in_size)
fnlzma_bool lzma_lzma_preset(lzma_options_lzma * options, uint32_t preset)
fnlzma_bool lzma_mf_is_supported(lzma_match_finder match_finder)
fnlzma_bool lzma_mode_is_supported(lzma_mode mode)
fnuint64_t lzma_easy_encoder_memusage(uint32_t preset)
fnuint64_t lzma_easy_decoder_memusage(uint32_t preset)
fnlzma_ret lzma_easy_encoder(lzma_stream * strm, uint32_t preset, lzma_check check)
fnlzma_ret lzma_easy_buffer_encode(uint32_t preset, lzma_check check, const(lzma_allocator) * allocator, const(uint8_t) * in_, size_t in_size, uint8_t * out_, size_t * out_pos, size_t out_size)
fnlzma_ret lzma_stream_encoder(lzma_stream * strm, const(lzma_filter) * filters, lzma_check check)
fnuint64_t lzma_stream_encoder_mt_memusage(const(lzma_mt) * options)
fnlzma_ret lzma_stream_encoder_mt(lzma_stream * strm, const(lzma_mt) * options)
fnuint64_t lzma_mt_block_size(const(lzma_filter) * filters)
fnlzma_ret lzma_alone_encoder(lzma_stream * strm, const(lzma_options_lzma) * options)
fnsize_t lzma_stream_buffer_bound(size_t uncompressed_size)
fnlzma_ret lzma_stream_buffer_encode(lzma_filter * filters, lzma_check check, const(lzma_allocator) * allocator, const(uint8_t) * in_, size_t in_size, uint8_t * out_, size_t * out_pos, size_t out_size)
fnlzma_ret lzma_microlzma_encoder(lzma_stream * strm, const(lzma_options_lzma) * options)
fnlzma_ret lzma_stream_decoder(lzma_stream * strm, uint64_t memlimit, uint32_t flags)
fnlzma_ret lzma_stream_decoder_mt(lzma_stream * strm, const(lzma_mt) * options)
fnlzma_ret lzma_auto_decoder(lzma_stream * strm, uint64_t memlimit, uint32_t flags)
fnlzma_ret lzma_alone_decoder(lzma_stream * strm, uint64_t memlimit)
fnlzma_ret lzma_lzip_decoder(lzma_stream * strm, uint64_t memlimit, uint32_t flags)
fnlzma_ret lzma_stream_buffer_decode(uint64_t * memlimit, uint32_t flags, const(lzma_allocator) * allocator, const(uint8_t) * in_, size_t * in_pos, size_t in_size, uint8_t * out_, size_t * out_pos, size_t out_size)
fnlzma_ret lzma_microlzma_decoder(lzma_stream * strm, uint64_t comp_size, uint64_t uncomp_size, lzma_bool uncomp_size_is_exact, uint32_t dict_size)
fnlzma_ret lzma_stream_header_encode(const(lzma_stream_flags) * options, uint8_t * out_)
fnlzma_ret lzma_stream_footer_encode(const(lzma_stream_flags) * options, uint8_t * out_)
fnlzma_ret lzma_stream_header_decode(lzma_stream_flags * options, const(uint8_t) * in_)
fnlzma_ret lzma_stream_footer_decode(lzma_stream_flags * options, const(uint8_t) * in_)
fnlzma_ret lzma_stream_flags_compare(const(lzma_stream_flags) * a, const(lzma_stream_flags) * b)
fnbool isLzmaError(lzma_ret code) @safe @nogc nothrowReturns `true` if the given `lzma_ret` value represents an error.
fnstring lzmaErrorName(lzma_ret code) @safe @nogc nothrowReturns a short human-readable description for a `lzma_ret` value.
fnuint lzmaVersionNumber() @safe @nogc nothrowReturns the liblzma version number as a packed integer.
fnstring lzmaVersion() @safeReturns the liblzma version string (e.g. `"5.8.1"`).
fnbool lzmaCheckIsSupported(lzma_check check) @safe @nogc nothrowReturns `true` if the given Check ID is supported by this liblzma build.
fnuint lzmaCheckSize(lzma_check check) @safe @nogc nothrowReturns the size in bytes of the Check field for the given Check ID.
fnulong lzmaPhysmem() @safe @nogc nothrowReturns the amount of physical memory reported by the operating system.
fnuint lzmaCputhreads() @safe @nogc nothrowReturns the number of logical CPU threads reported by the operating system.
fnlzma_options_lzma makeLzmaOptions(uint preset = LZMA_PRESET_DEFAULT)Convenience wrapper that initialises `lzma_options_lzma` from a preset.
fnsize_t lzmaStreamBufferBound(size_t uncompressedSize) @safe @nogc nothrowReturns an upper bound on the compressed size of `uncompressedSize` bytes when encoded in a single call with `lzma_stream_buffer_encode`.

Variables 42

enumvarLZMA_VERSION_MAJOR = 5

Compile-time liblzma major version against which these bindings were written.

enumvarLZMA_VERSION_MINOR = 8

Compile-time liblzma minor version against which these bindings were written.

enumvarLZMA_VERSION_PATCH = 1

Compile-time liblzma patch version against which these bindings were written.

enumvarLZMA_VERSION = (LZMA_VERSION_MAJOR * 1_000_000U + LZMA_VERSION_MINOR * 10_000U + LZMA_VERSION_PATCH * 10U + LZMA_VERSION_STABILITY_STABLE)

Compile-time liblzma version as a packed integer of the form xYYYZZZS (major, minor, patch, stability).

enumvarLZMA_VLI_MAX = (ulong.max / 2)

Maximum value of a lzma_vli.

enumvarLZMA_VLI_UNKNOWN = ulong.max

Special VLI value meaning "unknown".

enumvarLZMA_VLI_BYTES_MAX = 9

Maximum number of bytes a single encoded VLI can occupy.

enumvarLZMA_CHECK_ID_MAX = 15

Maximum valid Check ID (the .xz format reserves IDs 0..15).

enumvarLZMA_CHECK_SIZE_MAX = 64

Maximum size in bytes of a Check field.

enumvarLZMA_STREAM_INIT = lzma_stream( null, 0, 0, null, 0, 0, null, null, null, null, null, null, 0, 0, 0, 0, lzma_reserved_enum.LZMA_RESERVED_ENUM, lzma_reserved_enum.LZMA_RESERVED_ENUM)

Initialiser for lzma_stream.

Use it like: 

lzma_stream strm = LZMA_STREAM_INIT;

enumvarLZMA_FILTERS_MAX = 4

Maximum number of filters in a single filter chain.

enumvarLZMA_FILTER_LZMA1 = cast(lzma_vli) 0x4000000000000001UL

LZMA1 filter ID.

enumvarLZMA_FILTER_LZMA1EXT = cast(lzma_vli) 0x4000000000000002UL

LZMA1 extended filter ID.

enumvarLZMA_FILTER_LZMA2 = cast(lzma_vli) 0x21UL

LZMA2 filter ID (the primary modern filter).

enumvarLZMA_FILTER_DELTA = cast(lzma_vli) 0x03UL

Delta filter ID.

enumvarLZMA_FILTER_X86 = cast(lzma_vli) 0x04UL

BCJ for x86 (32-bit).

enumvarLZMA_FILTER_POWERPC = cast(lzma_vli) 0x05UL

BCJ for PowerPC.

enumvarLZMA_FILTER_IA64 = cast(lzma_vli) 0x06UL

BCJ for IA-64.

enumvarLZMA_FILTER_ARM = cast(lzma_vli) 0x07UL

BCJ for ARM.

enumvarLZMA_FILTER_ARMTHUMB = cast(lzma_vli) 0x08UL

BCJ for ARM-Thumb.

enumvarLZMA_FILTER_SPARC = cast(lzma_vli) 0x09UL

BCJ for SPARC.

enumvarLZMA_FILTER_ARM64 = cast(lzma_vli) 0x0AUL

BCJ for ARM64.

enumvarLZMA_DICT_SIZE_MIN = 4096

Minimum dictionary size in bytes.

enumvarLZMA_DICT_SIZE_DEFAULT = (1U << 23)

Default dictionary size in bytes (8 MiB).

enumvarLZMA_LCLP_MIN = 0

Minimum allowed value of lc and lp.

enumvarLZMA_LCLP_MAX = 4

Maximum allowed value of lc + lp.

enumvarLZMA_LC_DEFAULT = 3

Default literal context bits.

enumvarLZMA_LP_DEFAULT = 0

Default literal position bits.

enumvarLZMA_PB_MIN = 0

Minimum position bits.

enumvarLZMA_PB_MAX = 4

Maximum position bits.

enumvarLZMA_PB_DEFAULT = 2

Default position bits.

enumvarLZMA_LZMA1EXT_ALLOW_EOPM = 0x01U

Flag enabling the end-of-payload marker with LZMA1EXT.

enumvarLZMA_PRESET_DEFAULT = 6

Default compression preset (level 6).

enumvarLZMA_PRESET_LEVEL_MASK = 0x1FU

Mask extracting the level (0..9) from a preset value.

enumvarLZMA_PRESET_EXTREME = (1U << 31)

Flag modifying a preset for extreme (slower, slightly tighter) compression.

enumvarLZMA_TELL_NO_CHECK = 0x01U

Decoder flag: report streams with no integrity check via LZMA_NO_CHECK.

enumvarLZMA_TELL_UNSUPPORTED_CHECK = 0x02U

Decoder flag: report streams whose check type is not supported by this build.

enumvarLZMA_TELL_ANY_CHECK = 0x04U

Decoder flag: report the integrity check type via LZMA_GET_CHECK.

enumvarLZMA_CONCATENATED = 0x08U

Decoder flag: accept concatenated streams.

enumvarLZMA_IGNORE_CHECK = 0x10U

Decoder flag: skip integrity check verification (faster, weaker).

enumvarLZMA_FAIL_FAST = 0x20U

Decoder flag: report errors as soon as they are detected.

enumvarLZMA_STREAM_HEADER_SIZE = 12

Fixed size in bytes of the .xz Stream Header and Stream Footer.