| // Copyright 2020 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef BLOBFS_COMPRESSION_ALGORITHM_H_ |
| #define BLOBFS_COMPRESSION_ALGORITHM_H_ |
| |
| #include <stdint.h> |
| |
| #include <blobfs/format.h> |
| |
| namespace blobfs { |
| |
| // Unique identifiers for each |Compressor|/|Decompressor| strategy. |
| enum class CompressionAlgorithm { |
| UNCOMPRESSED = 0, |
| LZ4, |
| ZSTD, |
| ZSTD_SEEKABLE, |
| CHUNKED, |
| }; |
| |
| const char* CompressionAlgorithmToString(CompressionAlgorithm); |
| |
| // Returns the compression algorithm used in |inode|. |
| CompressionAlgorithm AlgorithmForInode(const Inode& inode); |
| |
| // Return an Inode header flagset with the flags associated with |algorithm| |
| // set, and all other flags are unset. |
| uint16_t CompressionInodeHeaderFlags(const CompressionAlgorithm& algorithm); |
| |
| CompressionAlgorithm AlgorithmFromInodeHeaderFlags(uint16_t flags); |
| |
| } // namespace blobfs |
| |
| #endif // BLOBFS_COMPRESSION_ALGORITHM_H_ |
