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/*
* GNU AFFERO GENERAL PUBLIC LICENSE
* Version 3, 19 November 2007
* Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
* Everyone is permitted to copy and distribute verbatim copies
* of this license document, but changing it is not allowed.
*/
using System;
using System.Globalization;
using System.IO;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Security.Cryptography;
using BinarySerialization;
using Newtonsoft.Json;
using PrusaSL1Reader.Extensions;
using SixLabors.ImageSharp;
using SixLabors.ImageSharp.Formats.Bmp;
using SixLabors.ImageSharp.Formats.Png;
using SixLabors.ImageSharp.PixelFormats;
namespace PrusaSL1Reader
{
/// <summary>
/// A helper class with utilities
/// </summary>
public static class Helpers
{
public static PngEncoder PngEncoder { get; } = new PngEncoder();
public static BmpEncoder BmpEncoder { get; } = new BmpEncoder();
/// <summary>
/// Gets the <see cref="BinarySerializer"/> instance
/// </summary>
public static BinarySerializer Serializer { get; } = new BinarySerializer {Endianness = Endianness.Little };
/// <summary>
/// Gets a white color of <see cref="L8"/>
/// </summary>
public static L8 L8White { get; } = new L8(255);
public static L8 L8Black { get; } = new L8(0);
public static byte[] ImageL8ToBytes(Image<L8> image)
{
return image.TryGetSinglePixelSpan(out var pixelSpan) ? MemoryMarshal.AsBytes(pixelSpan).ToArray() : null;
}
/*public static T ByteToType<T>(BinaryReader reader)
{
byte[] bytes = reader.ReadBytes(Marshal.SizeOf(typeof(T)));
GCHandle handle = GCHandle.Alloc(bytes, GCHandleType.Pinned);
T theStructure = (T)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(T));
handle.Free();
return theStructure;
}
public static byte[] SerializeToBytes<T>(T item)
{
var formatter = new BinaryFormatter();
using (var stream = new MemoryStream())
{
formatter.Serialize(stream, item);
stream.Seek(0, SeekOrigin.Begin);
return stream.ToArray();
}
}*/
public static MemoryStream Serialize(object value)
{
MemoryStream stream = new MemoryStream();
Serializer.Serialize(stream, value);
return stream;
}
public static T Deserialize<T>(BinaryReader binaryReader)
{
return Deserialize<T>(binaryReader.BaseStream);
}
public static T Deserialize<T>(Stream stream)
{
return Serializer.Deserialize<T>(stream);
}
public static uint WriteFileStream(FileStream fs, MemoryStream stream, uint offset = 0)
{
return WriteFileStream(fs, stream.ToArray(), offset);
}
public static uint WriteFileStream(FileStream fs, byte[] bytes, uint offset = 0)
{
fs.Write(bytes, 0, bytes.Length);
return (uint)bytes.Length;
}
public static uint SerializeWriteFileStream(FileStream fs, object value, uint offset = 0)
{
using (MemoryStream stream = Helpers.Serialize(value))
{
return WriteFileStream(fs, stream);
}
}
public static T JsonDeserializeObject<T>(Stream stream)
{
using (TextReader tr = new StreamReader(stream))
{
return JsonConvert.DeserializeObject<T>(tr.ReadToEnd());
}
}
public static SHA1CryptoServiceProvider SHA1 { get; } = new SHA1CryptoServiceProvider();
public static string ComputeSHA1Hash(byte[] input)
{
return Convert.ToBase64String(SHA1.ComputeHash(input));
}
public static bool SetPropertyValue(PropertyInfo attribute, object obj, string value)
{
var name = attribute.PropertyType.Name.ToLower();
switch (name)
{
case "string":
attribute.SetValue(obj, value.Convert<string>());
return true;
case "boolean":
if(char.IsDigit(value[0]))
attribute.SetValue(obj, !value.Equals(0));
else
attribute.SetValue(obj, value.Equals("True", StringComparison.InvariantCultureIgnoreCase));
return true;
case "byte":
attribute.SetValue(obj, value.Convert<byte>());
return true;
case "uint16":
attribute.SetValue(obj, value.Convert<ushort>());
return true;
case "uint32":
attribute.SetValue(obj, value.Convert<uint>());
return true;
case "single":
attribute.SetValue(obj, (float)Math.Round(float.Parse(value, CultureInfo.InvariantCulture.NumberFormat), 3));
return true;
case "double":
attribute.SetValue(obj, Math.Round(double.Parse(value, CultureInfo.InvariantCulture.NumberFormat), 3));
return true;
case "decimal":
attribute.SetValue(obj, Math.Round(decimal.Parse(value, CultureInfo.InvariantCulture.NumberFormat), 3));
return true;
default:
throw new Exception($"Data type '{name}' not recognized, contact developer.");
}
}
public static uint CoordinatesToPixelIndex(uint x, uint y, uint width)
{
return y * width + x;
}
}
}
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