1 /* SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause */ 2 /* 3 * Copyright (c) Meta Platforms, Inc. and affiliates. 4 * All rights reserved. 5 * 6 * This source code is licensed under both the BSD-style license (found in the 7 * LICENSE file in the root directory of this source tree) and the GPLv2 (found 8 * in the COPYING file in the root directory of this source tree). 9 * You may select, at your option, one of the above-listed licenses. 10 */ 11 12 #ifndef ZSTD_COMPRESS_LITERALS_H 13 #define ZSTD_COMPRESS_LITERALS_H 14 15 #include "zstd_compress_internal.h" /* ZSTD_hufCTables_t, ZSTD_minGain() */ 16 17 18 size_t ZSTD_noCompressLiterals (void* dst, size_t dstCapacity, const void* src, size_t srcSize); 19 20 /* ZSTD_compressRleLiteralsBlock() : 21 * Conditions : 22 * - All bytes in @src are identical 23 * - dstCapacity >= 4 */ 24 size_t ZSTD_compressRleLiteralsBlock (void* dst, size_t dstCapacity, const void* src, size_t srcSize); 25 26 /* ZSTD_compressLiterals(): 27 * @entropyWorkspace: must be aligned on 4-bytes boundaries 28 * @entropyWorkspaceSize : must be >= HUF_WORKSPACE_SIZE 29 * @suspectUncompressible: sampling checks, to potentially skip huffman coding 30 */ 31 size_t ZSTD_compressLiterals (void* dst, size_t dstCapacity, 32 const void* src, size_t srcSize, 33 void* entropyWorkspace, size_t entropyWorkspaceSize, 34 const ZSTD_hufCTables_t* prevHuf, 35 ZSTD_hufCTables_t* nextHuf, 36 ZSTD_strategy strategy, int disableLiteralCompression, 37 int suspectUncompressible, 38 int bmi2); 39 40 #endif /* ZSTD_COMPRESS_LITERALS_H */ 41