/* SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause */ /* * Copyright (c) Meta Platforms, Inc. and affiliates. * All rights reserved. * * This source code is licensed under both the BSD-style license (found in the * LICENSE file in the root directory of this source tree) and the GPLv2 (found * in the COPYING file in the root directory of this source tree). * You may select, at your option, one of the above-listed licenses. */ #ifndef ZSTD_COMPRESS_LITERALS_H #define ZSTD_COMPRESS_LITERALS_H #include "zstd_compress_internal.h" /* ZSTD_hufCTables_t, ZSTD_minGain() */ size_t ZSTD_noCompressLiterals (void* dst, size_t dstCapacity, const void* src, size_t srcSize); /* ZSTD_compressRleLiteralsBlock() : * Conditions : * - All bytes in @src are identical * - dstCapacity >= 4 */ size_t ZSTD_compressRleLiteralsBlock (void* dst, size_t dstCapacity, const void* src, size_t srcSize); /* ZSTD_compressLiterals(): * @entropyWorkspace: must be aligned on 4-bytes boundaries * @entropyWorkspaceSize : must be >= HUF_WORKSPACE_SIZE * @suspectUncompressible: sampling checks, to potentially skip huffman coding */ size_t ZSTD_compressLiterals (void* dst, size_t dstCapacity, const void* src, size_t srcSize, void* entropyWorkspace, size_t entropyWorkspaceSize, const ZSTD_hufCTables_t* prevHuf, ZSTD_hufCTables_t* nextHuf, ZSTD_strategy strategy, int disableLiteralCompression, int suspectUncompressible, int bmi2); #endif /* ZSTD_COMPRESS_LITERALS_H */