Package org.apache.commons.compress.compressors.zstandard

Class ZstdConstants

java.lang.Object

org.apache.commons.compress.compressors.zstandard.ZstdConstants

public class ZstdConstants
extends Object

Zstd constants.

Since:

1.28.0

Field Summary

Fields

Modifier and Type	Field	Description
static final int	ZSTD_CHAINLOG_MAX	Maximum chain log value.
static final int	ZSTD_CHAINLOG_MIN	Minimum chain log value.
static final int	ZSTD_CLEVEL_DEFAULT	Default compression level.
static final int	ZSTD_CLEVEL_MAX	Maximum compression level.
static final int	ZSTD_CLEVEL_MIN	Minimum compression level.
static final int	ZSTD_HASHLOG_MAX	Maximum hash log value.
static final int	ZSTD_HASHLOG_MIN	Minimum hash log value.
static final int	ZSTD_MINMATCH_MAX	ZSTD_MINMATCH_MAX = 7.
static final int	ZSTD_MINMATCH_MIN	ZSTD_MINMATCH_MAX = 3.
static final int	ZSTD_SEARCHLOG_MAX	Maximum search log value.
static final int	ZSTD_SEARCHLOG_MIN	Minimum search log value.
static final int	ZSTD_WINDOWLOG_LIMIT_DEFAULT	ZSTD_WINDOWLOG_LIMIT_DEFAULT = 27.
static final int	ZSTD_WINDOWLOG_MAX	Maximum window log value.
static final int	ZSTD_WINDOWLOG_MIN	Minimum window log value.

Constructor Summary

Constructors

Constructor	Description
ZstdConstants()

Method Summary

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

ZSTD_CHAINLOG_MAX

public static final int ZSTD_CHAINLOG_MAX

Maximum chain log value.

This constant name matches the name in the C header file.

See Also:

• ZstdCompressorOutputStream.Builder.setLevel(int)
• zstd.h

ZSTD_CHAINLOG_MIN

public static final int ZSTD_CHAINLOG_MIN

Minimum chain log value.

This constant name matches the name in the C header file.

See Also:

• ZstdCompressorOutputStream.Builder.setLevel(int)
• zstd.h

ZSTD_CLEVEL_DEFAULT

public static final int ZSTD_CLEVEL_DEFAULT

Default compression level.

This constant name matches the name in the C header file.

See Also:

• ZstdCompressorOutputStream.Builder.setLevel(int)
• zstd.h

ZSTD_CLEVEL_MAX

public static final int ZSTD_CLEVEL_MAX

Maximum compression level.

This constant name matches the name in the C header file.

See Also:

• ZstdCompressorOutputStream.Builder.setLevel(int)
• zstd.h

ZSTD_CLEVEL_MIN

public static final int ZSTD_CLEVEL_MIN

Minimum compression level.

This constant name matches the name in the C header file.

See Also:

• ZstdCompressorOutputStream.Builder.setLevel(int)
• zstd.h

ZSTD_HASHLOG_MAX

public static final int ZSTD_HASHLOG_MAX

Maximum hash log value.

This constant name matches the name in the C header file.

See Also:

• ZstdCompressorOutputStream.Builder.setHashLog(int)
• zstd.h

ZSTD_HASHLOG_MIN

public static final int ZSTD_HASHLOG_MIN

Minimum hash log value.

This constant name matches the name in the C header file.

See Also:

• ZstdCompressorOutputStream.Builder.setHashLog(int)
• zstd.h

ZSTD_MINMATCH_MAX

public static final int ZSTD_MINMATCH_MAX

ZSTD_MINMATCH_MAX = 7. Only for ZSTD_fast, other strategies are limited to 6.

This constant name matches the name in the C header file.

See Also:

• ZstdCompressorOutputStream.Builder.setMinMatch(int)
• zstd.h
• Constant Field Values

ZSTD_MINMATCH_MIN

public static final int ZSTD_MINMATCH_MIN

ZSTD_MINMATCH_MAX = 3. Only for ZSTD_btopt+, faster strategies are limited to 4.

See Also:

• Constant Field Values

ZSTD_SEARCHLOG_MAX

public static final int ZSTD_SEARCHLOG_MAX

Maximum search log value.

This constant name matches the name in the C header file.

See Also:

• ZstdCompressorOutputStream.Builder.setSearchLog(int)
• zstd.h

ZSTD_SEARCHLOG_MIN

public static final int ZSTD_SEARCHLOG_MIN

Minimum search log value.

This constant name matches the name in the C header file.

See Also:

• ZstdCompressorOutputStream.Builder.setSearchLog(int)
• zstd.h

ZSTD_WINDOWLOG_LIMIT_DEFAULT

public static final int ZSTD_WINDOWLOG_LIMIT_DEFAULT

ZSTD_WINDOWLOG_LIMIT_DEFAULT = 27.

By default, the streaming decoder will refuse any frame requiring larger than (in C) (1 << ZSTD_WINDOWLOG_LIMIT_DEFAULT) window size, to preserve host's memory from unreasonable requirements.

This constant name matches the name in the C header file.

See Also:

• ZstdCompressorOutputStream.Builder.setMinMatch(int)
• zstd.h
• Constant Field Values

ZSTD_WINDOWLOG_MAX

public static final int ZSTD_WINDOWLOG_MAX

Maximum window log value.

This constant name matches the name in the C header file.

See Also:

• ZstdCompressorOutputStream.Builder.setWindowLog(int)
• zstd.h

ZSTD_WINDOWLOG_MIN

public static final int ZSTD_WINDOWLOG_MIN

Minimum window log value.

This constant name matches the name in the C header file.

See Also:

• ZstdCompressorOutputStream.Builder.setWindowLog(int)
• zstd.h

Constructor Details

ZstdConstants

public ZstdConstants()