public Class ZstdX

The minimum valid max blocksize.

Default is 0 == disabled.

Allowed values are 0 (disable) and 1 (enable).

Force back-reference distances to remain < windowSize, even when referencing into Dictionary content.

Controlled with ZSTD_paramSwitch_e enum.

Controlled with ZSTD_paramSwitch_e enum.

This parameter affects how zstd parses external sequences, such as sequences provided through the compressSequences API or from an external block-level sequence producer.

Experimental parameter.

Tries to fit compressed block size to be around targetCBlockSize.

Controlled with ZSTD_paramSwitch_e enum.

Set to 1 to disable the Huffman assembly implementation.

Experimental parameter.

Experimental parameter.

This enum controls d_forceIgnoreChecksum.

ZSTD_dictContentType_e Enum values:

• dct_auto - dictionary is "full" when starting with MAGIC_DICTIONARY, otherwise it is "rawContent"
• dct_rawContent - ensures dictionary is always loaded as rawContent, even if it starts with ZSTD_MAGIC_DICTIONARY
• dct_fullDict - refuses to load a dictionary if it does not respect Zstandard's specification, starting with ZSTD_MAGIC_DICTIONARY

ZSTD_dictAttachPref_e Enum values:

• dictDefaultAttach - Use the default heuristic.
• dictForceAttach - Never copy the dictionary.
• dictForceCopy - Always copy the dictionary.
• dictForceLoad - Always reload the dictionary.

ZSTD_dictAttachPref_e Enum values:

• dictDefaultAttach - Use the default heuristic.
• dictForceAttach - Never copy the dictionary.
• dictForceCopy - Always copy the dictionary.
• dictForceLoad - Always reload the dictionary.

ZSTD_dictLoadMethod_e Enum values:

• dlm_byCopy - Copy dictionary content internally
• dlm_byRef - Reference dictionary content -- the dictionary buffer must outlive its users.

ZSTD_format_e Enum values:

• f_zstd1 - zstd frame format, specified in zstd_compression_format.md (default)
• f_zstd1_magicless - Variant of zstd frame format, without initial 4-bytes magic number. Useful to save 4 bytes per generated frame. Decoder cannot recognise automatically this format, requiring this instruction.

ZSTD_frameType_e Enum values:

• frame
• skippableFrame

ZSTD_literalCompressionMode_e Enum values:

• lcm_auto - Automatically determine the compression mode based on the compression level.

  Negative compression levels will be uncompressed, and positive compression levels will be compressed.

• lcm_huffman - Always attempt Huffman compression. Uncompressed literals will still be emitted if Huffman compression is not profitable.
• lcm_uncompressed - Always emit uncompressed literals.

ZSTD_literalCompressionMode_e Enum values:

• lcm_auto - Automatically determine the compression mode based on the compression level.

  Negative compression levels will be uncompressed, and positive compression levels will be compressed.

• lcm_huffman - Always attempt Huffman compression. Uncompressed literals will still be emitted if Huffman compression is not profitable.
• lcm_uncompressed - Always emit uncompressed literals.

ZSTD_paramSwitch_e

This enum controls features which are conditionally beneficial.

ZSTD_paramSwitch_e

This enum controls features which are conditionally beneficial.

This enum controls d_refMultipleDDicts.

ZSTD_sequenceFormat_e Enum values:

• sf_noBlockDelimiters - Representation of ZSTD_Sequence has no block delimiters, sequences only.
• sf_explicitBlockDelimiters - Representation of ZSTD_Sequence contains explicit block delimiters.

ZSTD_nextInputType_e Enum values:

• ZSTDnit_frameHeader
• ZSTDnit_blockHeader
• ZSTDnit_block
• ZSTDnit_lastBlock
• ZSTDnit_checksum
• ZSTDnit_skippableFrame

ZSTD_nextInputType_e Enum values:

• ZSTDnit_frameHeader
• ZSTDnit_blockHeader
• ZSTDnit_block
• ZSTDnit_lastBlock
• ZSTDnit_checksum
• ZSTDnit_skippableFrame

ZSTD_nextInputType_e Enum values:

• ZSTDnit_frameHeader
• ZSTDnit_blockHeader
• ZSTDnit_block
• ZSTDnit_lastBlock
• ZSTDnit_checksum
• ZSTDnit_skippableFrame