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Code Wiki Activity

Switch MapBlock compression to zstd (#10788)

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* Add zstd support.
* Rearrange serialization order
* Compress entire mapblock

Co-authored-by: sfan5 <sfan5@live.de>
This commit is contained in:
lhofhansl 2021-08-31 17:32:31 -07:00 • committed by GitHub
parent beac4a2c98
commit d1624a5521
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24 changed files with 494 additions and 152 deletions
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14
src/serialization.h
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@ -63,13 +63,14 @@ with this program; if not, write to the Free Software Foundation, Inc.,
26: Never written; read the same as 25
27: Added light spreading flags to blocks
28: Added "private" flag to NodeMetadata
29: Switched compression to zstd, a bit of reorganization
*/
// This represents an uninitialized or invalid format
#define SER_FMT_VER_INVALID 255
// Highest supported serialization version
#define SER_FMT_VER_HIGHEST_READ 28
#define SER_FMT_VER_HIGHEST_READ 29
// Saved on disk version
#define SER_FMT_VER_HIGHEST_WRITE 28
#define SER_FMT_VER_HIGHEST_WRITE 29
// Lowest supported serialization version
#define SER_FMT_VER_LOWEST_READ 0
// Lowest serialization version for writing
@ -89,7 +90,12 @@ void compressZlib(const u8 *data, size_t data_size, std::ostream &os, int level
void compressZlib(const std::string &data, std::ostream &os, int level = -1);
void decompressZlib(std::istream &is, std::ostream &os, size_t limit = 0);
void compressZstd(const u8 *data, size_t data_size, std::ostream &os, int level = 0);
void compressZstd(const std::string &data, std::ostream &os, int level = 0);
void decompressZstd(std::istream &is, std::ostream &os);
// These choose between zlib and a self-made one according to version
void compress(const SharedBuffer<u8> &data, std::ostream &os, u8 version);
//void compress(const std::string &data, std::ostream &os, u8 version);
void compress(const SharedBuffer<u8> &data, std::ostream &os, u8 version, int level = -1);
void compress(const std::string &data, std::ostream &os, u8 version, int level = -1);
void compress(u8 *data, u32 size, std::ostream &os, u8 version, int level = -1);
void decompress(std::istream &is, std::ostream &os, u8 version);