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ZlibCompressor: use libdeflate for level 0 compression

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this is supported since libdeflate 1.15 and ext-libdeflate 0.2.0.
Everyone should be using these versions by now anyway, and if they aren't, they should update.

libdeflate's level 0 compression is over 20 times faster than zlib, so this is a nice performance improvement.
This commit is contained in:
Dylan K. Taylor 2023-11-09 18:05:07 +00:00
parent c1ed182112
commit e3700cab50
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GPG Key ID: 8927471A91CAFD3D
2 changed files with 12 additions and 10 deletions
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7
src/PocketMine.php
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@ -144,6 +144,13 @@ namespace pocketmine {
$messages[] = "chunkutils2 ^$wantedVersionMin is required, while you have $chunkutils2_version.";
}
if(($libdeflate_version = phpversion("libdeflate")) !== false){
//make sure level 0 compression is available
if(version_compare($libdeflate_version, "0.2.0") < 0 || version_compare($libdeflate_version, "0.3.0") >= 0){
$messages[] = "php-libdeflate ^0.2.0 is required, while you have $libdeflate_version.";
}
}
if(extension_loaded("pocketmine")){
$messages[] = "The native PocketMine extension is no longer supported.";
}

15
src/network/mcpe/compression/ZlibCompressor.php
View File

@ -67,17 +67,12 @@ final class ZlibCompressor implements Compressor{
return $result;
}
private static function zlib_encode(string $data, int $level) : string{
return Utils::assumeNotFalse(zlib_encode($data, ZLIB_ENCODING_RAW, $level), "ZLIB compression failed");
}
public function compress(string $payload) : string{
$compressible = $this->minCompressionSize !== null && strlen($payload) >= $this->minCompressionSize;
if(function_exists('libdeflate_deflate_compress')){
return $compressible ?
libdeflate_deflate_compress($payload, $this->level) :
self::zlib_encode($payload, 0);
}
return self::zlib_encode($payload, $compressible ? $this->level : 0);
$level = $compressible ? $this->level : 0;
return function_exists('libdeflate_deflate_compress') ?
libdeflate_deflate_compress($payload, $level) :
Utils::assumeNotFalse(zlib_encode($payload, ZLIB_ENCODING_RAW, $level), "ZLIB compression failed");
}
}