1a28cd43dSSascha Wildner /* 2a28cd43dSSascha Wildner * Copyright (c) 2016-2020, Yann Collet, Facebook, Inc. 3a28cd43dSSascha Wildner * All rights reserved. 4a28cd43dSSascha Wildner * 5a28cd43dSSascha Wildner * This source code is licensed under both the BSD-style license (found in the 6a28cd43dSSascha Wildner * LICENSE file in the root directory of this source tree) and the GPLv2 (found 7a28cd43dSSascha Wildner * in the COPYING file in the root directory of this source tree). 8a28cd43dSSascha Wildner * You may select, at your option, one of the above-listed licenses. 9a28cd43dSSascha Wildner */ 10a28cd43dSSascha Wildner 11a28cd43dSSascha Wildner #ifndef ZSTD_COMPRESS_SEQUENCES_H 12a28cd43dSSascha Wildner #define ZSTD_COMPRESS_SEQUENCES_H 13a28cd43dSSascha Wildner 14a28cd43dSSascha Wildner #include "../common/fse.h" /* FSE_repeat, FSE_CTable */ 15a28cd43dSSascha Wildner #include "../common/zstd_internal.h" /* symbolEncodingType_e, ZSTD_strategy */ 16a28cd43dSSascha Wildner 17a28cd43dSSascha Wildner typedef enum { 18a28cd43dSSascha Wildner ZSTD_defaultDisallowed = 0, 19a28cd43dSSascha Wildner ZSTD_defaultAllowed = 1 20a28cd43dSSascha Wildner } ZSTD_defaultPolicy_e; 21a28cd43dSSascha Wildner 22a28cd43dSSascha Wildner symbolEncodingType_e 23a28cd43dSSascha Wildner ZSTD_selectEncodingType( 24a28cd43dSSascha Wildner FSE_repeat* repeatMode, unsigned const* count, unsigned const max, 25a28cd43dSSascha Wildner size_t const mostFrequent, size_t nbSeq, unsigned const FSELog, 26a28cd43dSSascha Wildner FSE_CTable const* prevCTable, 27a28cd43dSSascha Wildner short const* defaultNorm, U32 defaultNormLog, 28a28cd43dSSascha Wildner ZSTD_defaultPolicy_e const isDefaultAllowed, 29a28cd43dSSascha Wildner ZSTD_strategy const strategy); 30a28cd43dSSascha Wildner 31a28cd43dSSascha Wildner size_t 32a28cd43dSSascha Wildner ZSTD_buildCTable(void* dst, size_t dstCapacity, 33a28cd43dSSascha Wildner FSE_CTable* nextCTable, U32 FSELog, symbolEncodingType_e type, 34a28cd43dSSascha Wildner unsigned* count, U32 max, 35a28cd43dSSascha Wildner const BYTE* codeTable, size_t nbSeq, 36a28cd43dSSascha Wildner const S16* defaultNorm, U32 defaultNormLog, U32 defaultMax, 37a28cd43dSSascha Wildner const FSE_CTable* prevCTable, size_t prevCTableSize, 38a28cd43dSSascha Wildner void* entropyWorkspace, size_t entropyWorkspaceSize); 39a28cd43dSSascha Wildner 40a28cd43dSSascha Wildner size_t ZSTD_encodeSequences( 41a28cd43dSSascha Wildner void* dst, size_t dstCapacity, 42a28cd43dSSascha Wildner FSE_CTable const* CTable_MatchLength, BYTE const* mlCodeTable, 43a28cd43dSSascha Wildner FSE_CTable const* CTable_OffsetBits, BYTE const* ofCodeTable, 44a28cd43dSSascha Wildner FSE_CTable const* CTable_LitLength, BYTE const* llCodeTable, 45a28cd43dSSascha Wildner seqDef const* sequences, size_t nbSeq, int longOffsets, int bmi2); 46a28cd43dSSascha Wildner 47a28cd43dSSascha Wildner size_t ZSTD_fseBitCost( 48a28cd43dSSascha Wildner FSE_CTable const* ctable, 49a28cd43dSSascha Wildner unsigned const* count, 50a28cd43dSSascha Wildner unsigned const max); 51a28cd43dSSascha Wildner 52a28cd43dSSascha Wildner size_t ZSTD_crossEntropyCost(short const* norm, unsigned accuracyLog, 53a28cd43dSSascha Wildner unsigned const* count, unsigned const max); 54a28cd43dSSascha Wildner #endif /* ZSTD_COMPRESS_SEQUENCES_H */ 55