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//===-- llvm/Support/Compression.h ---Compression----------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file contains basic functions for compression/uncompression.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_SUPPORT_COMPRESSION_H
#define LLVM_SUPPORT_COMPRESSION_H
#include "llvm/ADT/ArrayRef.h"
#include "llvm/Support/DataTypes.h"
namespace llvm {
template <typename T> class SmallVectorImpl;
class Error;
namespace compression {
namespace zlib {
constexpr int NoCompression = 0;
constexpr int BestSpeedCompression = 1;
constexpr int DefaultCompression = 6;
constexpr int BestSizeCompression = 9;
bool isAvailable();
void compress(ArrayRef<uint8_t> Input,
SmallVectorImpl<uint8_t> &CompressedBuffer,
int Level = DefaultCompression);
Error uncompress(ArrayRef<uint8_t> Input, uint8_t *UncompressedBuffer,
size_t &UncompressedSize);
Error uncompress(ArrayRef<uint8_t> Input,
SmallVectorImpl<uint8_t> &UncompressedBuffer,
size_t UncompressedSize);
} // End of namespace zlib
namespace zstd {
constexpr int NoCompression = -5;
constexpr int BestSpeedCompression = 1;
constexpr int DefaultCompression = 5;
constexpr int BestSizeCompression = 12;
bool isAvailable();
void compress(ArrayRef<uint8_t> Input,
SmallVectorImpl<uint8_t> &CompressedBuffer,
int Level = DefaultCompression);
Error uncompress(ArrayRef<uint8_t> Input, uint8_t *UncompressedBuffer,
size_t &UncompressedSize);
Error uncompress(ArrayRef<uint8_t> Input,
SmallVectorImpl<uint8_t> &UncompressedBuffer,
size_t UncompressedSize);
} // End of namespace zstd
} // End of namespace compression
} // End of namespace llvm
#endif
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