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user-selectable compression methods: zstd and snappy

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This commit is contained in:
minjaesong
2023-12-21 03:46:55 +09:00
parent 44ff974b86
commit 6f4e60284b
4 changed files with 77 additions and 19 deletions
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22
src/net/torvald/terrarum/tests/ZipTest.kt
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@@ -1,5 +1,6 @@
package net.torvald.terrarum.tests
import com.badlogic.gdx.utils.compression.Lzma
import io.airlift.compress.snappy.SnappyFramedInputStream
import io.airlift.compress.snappy.SnappyFramedOutputStream
import io.airlift.compress.zstd.ZstdInputStream
@@ -10,6 +11,8 @@ import net.torvald.terrarum.realestate.LandUtil.CHUNK_W
import net.torvald.terrarum.savegame.ByteArray64
import net.torvald.terrarum.savegame.ByteArray64GrowableOutputStream
import net.torvald.terrarum.savegame.ByteArray64InputStream
import net.torvald.terrarum.serialise.toUint
import net.torvald.terrarum.toHex
import java.io.InputStream
import java.io.OutputStream
import java.util.zip.GZIPInputStream
@@ -75,6 +78,7 @@ class ZipTest(val mode: String) {
private val testInput0 = Array(TEST_COUNT) { dataGenerator(CHUNKSIZE) }
private val testInputG = testInput0.copyOf().also { it.shuffle() }
private val testInputL = testInput0.copyOf().also { it.shuffle() }
private val testInputZ = testInput0.copyOf().also { it.shuffle() }
private val testInputS = testInput0.copyOf().also { it.shuffle() }
@@ -128,7 +132,6 @@ class ZipTest(val mode: String) {
}
}
val zstdCompTime = measureNanoTime {
for (i in 0 until TEST_COUNT) {
compBufZ[i] = compZstd(testInputZ[i])
@@ -169,12 +172,29 @@ class ZipTest(val mode: String) {
println("Snpy comp: $snappyCompTime ns")
println("Snpy decomp: $snappyDecompTime ns; ratio: $ratioS% (avr size: $compSizeS)")
println()
repeat(2) { sg.add(compBufG.random()!!.sliceArray(0..15).joinToString { it.toUint().toHex().takeLast(2) }) }
repeat(2) { sz.add(compBufZ.random()!!.sliceArray(0..15).joinToString { it.toUint().toHex().takeLast(2) }) }
repeat(2) { ss.add(compBufS.random()!!.sliceArray(0..15).joinToString { it.toUint().toHex().takeLast(2) }) }
}
}
private val sg = ArrayList<String>()
private val sz = ArrayList<String>()
private val ss = ArrayList<String>()
fun main() {
ZipTest("Simulated Real-World").main()
ZipTest("Zero-Filled").main()
ZipTest("Random").main()
println("Gzip samples:")
sg.forEach { println(it) }
println("Zstd samples:")
sz.forEach { println(it) }
println("Snappy samples:")
ss.forEach { println(it) }
}