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using System;
using System.Globalization;
using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;
using MediaBrowser.Common;
namespace Jellyfin.Common.Benches
{
[MemoryDiagnoser]
public class HexDecodeBenches
{
private string _data;
[Params(0, 10, 100, 1000, 10000, 1000000)]
public int N { get; set; }
[GlobalSetup]
public void GlobalSetup()
{
var bytes = new byte[N];
new Random(42).NextBytes(bytes);
_data = Hex.Encode(bytes);
}
[Benchmark]
public byte[] Decode() => Hex.Decode(_data);
[Benchmark]
public byte[] DecodeSubString() => DecodeSubString(_data);
private static byte[] DecodeSubString(string str)
{
byte[] bytes = new byte[str.Length / 2];
for (int i = 0; i < str.Length; i += 2)
{
bytes[i / 2] = byte.Parse(
str.Substring(i, 2),
NumberStyles.HexNumber,
CultureInfo.InvariantCulture);
}
return bytes;
}
}
}
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