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bbcddb127a
This commit only replaces the bundled source and does not include any ZFS integration changes. Because the build depends on integration adjustments, it will fail until the accompanying integration commit is applied. Upstream release: https://github.com/facebook/zstd/releases/tag/v1.5.7 Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Moch <mail@alexmoch.com> Closes #18089
56 lines
2.2 KiB
C
56 lines
2.2 KiB
C
/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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* All rights reserved.
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*
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* This source code is licensed under both the BSD-style license (found in the
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* LICENSE file in the root directory of this source tree) and the GPLv2 (found
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* in the COPYING file in the root directory of this source tree).
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* You may select, at your option, one of the above-listed licenses.
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*/
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#ifndef ZSTD_COMPRESS_SEQUENCES_H
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#define ZSTD_COMPRESS_SEQUENCES_H
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#include "zstd_compress_internal.h" /* SeqDef */
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#include "../common/fse.h" /* FSE_repeat, FSE_CTable */
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#include "../common/zstd_internal.h" /* SymbolEncodingType_e, ZSTD_strategy */
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typedef enum {
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ZSTD_defaultDisallowed = 0,
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ZSTD_defaultAllowed = 1
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} ZSTD_DefaultPolicy_e;
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SymbolEncodingType_e
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ZSTD_selectEncodingType(
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FSE_repeat* repeatMode, unsigned const* count, unsigned const max,
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size_t const mostFrequent, size_t nbSeq, unsigned const FSELog,
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FSE_CTable const* prevCTable,
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short const* defaultNorm, U32 defaultNormLog,
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ZSTD_DefaultPolicy_e const isDefaultAllowed,
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ZSTD_strategy const strategy);
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size_t
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ZSTD_buildCTable(void* dst, size_t dstCapacity,
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FSE_CTable* nextCTable, U32 FSELog, SymbolEncodingType_e type,
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unsigned* count, U32 max,
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const BYTE* codeTable, size_t nbSeq,
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const S16* defaultNorm, U32 defaultNormLog, U32 defaultMax,
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const FSE_CTable* prevCTable, size_t prevCTableSize,
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void* entropyWorkspace, size_t entropyWorkspaceSize);
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size_t ZSTD_encodeSequences(
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void* dst, size_t dstCapacity,
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FSE_CTable const* CTable_MatchLength, BYTE const* mlCodeTable,
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FSE_CTable const* CTable_OffsetBits, BYTE const* ofCodeTable,
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FSE_CTable const* CTable_LitLength, BYTE const* llCodeTable,
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SeqDef const* sequences, size_t nbSeq, int longOffsets, int bmi2);
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size_t ZSTD_fseBitCost(
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FSE_CTable const* ctable,
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unsigned const* count,
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unsigned const max);
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size_t ZSTD_crossEntropyCost(short const* norm, unsigned accuracyLog,
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unsigned const* count, unsigned const max);
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#endif /* ZSTD_COMPRESS_SEQUENCES_H */
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