1 /* 2 * Copyright (c) Meta Platforms, Inc. and affiliates. 3 * All rights reserved. 4 * 5 * This source code is licensed under both the BSD-style license (found in the 6 * LICENSE file in the root directory of this source tree) and the GPLv2 (found 7 * in the COPYING file in the root directory of this source tree). 8 * You may select, at your option, one of the above-listed licenses. 9 */ 10 11 #ifndef ZSTD_COMPRESS_LITERALS_H 12 #define ZSTD_COMPRESS_LITERALS_H 13 14 #include "zstd_compress_internal.h" /* ZSTD_hufCTables_t, ZSTD_minGain() */ 15 16 17 size_t ZSTD_noCompressLiterals (void* dst, size_t dstCapacity, const void* src, size_t srcSize); 18 19 /* ZSTD_compressRleLiteralsBlock() : 20 * Conditions : 21 * - All bytes in @src are identical 22 * - dstCapacity >= 4 */ 23 size_t ZSTD_compressRleLiteralsBlock (void* dst, size_t dstCapacity, const void* src, size_t srcSize); 24 25 /* ZSTD_compressLiterals(): 26 * @entropyWorkspace: must be aligned on 4-bytes boundaries 27 * @entropyWorkspaceSize : must be >= HUF_WORKSPACE_SIZE 28 * @suspectUncompressible: sampling checks, to potentially skip huffman coding 29 */ 30 size_t ZSTD_compressLiterals (void* dst, size_t dstCapacity, 31 const void* src, size_t srcSize, 32 void* entropyWorkspace, size_t entropyWorkspaceSize, 33 const ZSTD_hufCTables_t* prevHuf, 34 ZSTD_hufCTables_t* nextHuf, 35 ZSTD_strategy strategy, int disableLiteralCompression, 36 int suspectUncompressible, 37 int bmi2); 38 39 #endif /* ZSTD_COMPRESS_LITERALS_H */ 40