bitconverter

问题 This question already has an answer here : Equivalent of BitConverter.ToUInt16 of C# for Java (1 answer) Closed 9 days ago . My question is about Java. I need a method that returns an unsigned 16-bit integer converted from two bytes at the specified position in a byte array. In other words I need the equivalent of the method BitConverter.ToUInt16 of C# for Java that works with Java 7. In C# using System; using System.IO; using System.Linq; using System.Collections.Generic; namespace CSharp

问题 My question is about Java What is the equivalent of BitConverter.ToUInt16 for Java? I am trying to translate this method of C#: public static implicit operator ushort(HashlinkReader p) { ushort tmp = BitConverter.ToUInt16(p.Data.ToArray(), p.Position); p.Position += 2; return tmp; } to Java: public static int convertToInt(HashlinkReader p) { byte[] byteArray = new byte[p.Data.size()]; for (int index = 0; index < p.Data.size(); index++) { byteArray[index] = p.Data.get(index); } int tmp =

问题 My question is about Java What is the equivalent of BitConverter.ToUInt16 for Java? I am trying to translate this method of C#: public static implicit operator ushort(HashlinkReader p) { ushort tmp = BitConverter.ToUInt16(p.Data.ToArray(), p.Position); p.Position += 2; return tmp; } to Java: public static int convertToInt(HashlinkReader p) { byte[] byteArray = new byte[p.Data.size()]; for (int index = 0; index < p.Data.size(); index++) { byteArray[index] = p.Data.get(index); } int tmp =

问题 I recently did some profiling on some code and found that the largest CPU usage was being consumed by calls to BitConverter such as: return BitConverter.ToInt16(new byte[] { byte1, byte2 }); when switching to something like: return (short)(byte1 << 8 | byte2); I noticed a huge improvement in performance. My question is why is using BitConverter so much slower? I would have assumed that BitConverter was essentially doing the same kind of bit shifting internally. 回答1: The call to BitConverter

问题 I have a generic class which saves value for the specified type T. The value can be an int, uint, double or float. Now I want to get the bytes of the value to encode it into an specific protocol. Therefore I want to use the method BitConverter.GetBytes() but unfortunately Bitconverter does not support generic types or undefined objects. That is why I want to cast the value and call the specific overload of GetBytes(). My Question: How can I cast a generic value to int, double or float? This

问题 Just wondering if someone could explain why the two following lines of code return "different" results? What causes the reversed values? Is this something to do with endianness? int.MaxValue.ToString("X") //Result: 7FFFFFFF BitConverter.ToString(BitConverter.GetBytes(int.MaxValue)) //Result: FF-FF-FF-7F 回答1: int.MaxValue.ToString("X") outputs 7FFFFFFF , that is, the number 2147483647 as a whole . On the other hand, BitConverter.GetBytes returns an array of bytes representing 2147483647 in

问题 How would I convert this into a loop and not to use the pointer. byte[] InputBuffer = new byte[8]; unsafe { fixed (byte* pInputBuffer = InputBuffer) { ((long*)pInputBuffer)[0] = value; } } I am trying to use the code from this page: query string parameter obfuscation 回答1: There's no looping here. You could use BitConverter.GetBytes instead of the unsafe type-punning cast. byte[] InputBuffer = BitConverter.GetBytes(value); replaces all six original lines of code. 来源： https://stackoverflow.com

问题 I need to get the sample values of sound data of a WAV file so that by using those sample values i need to get the amplitude values of that sound data in every second. Important: Is there any way to get audio data sample values using Naudio library or wmp library? I am getting the sample values in this way: byte[] data = File.ReadAllBytes(File_textBox.Text); var samples=new int[data.Length]; int x = 0; for (int i = 44; i <data.Length; i += 2) { samples[x] = BitConverter.ToInt16(data, i); x++;

问题 It would be nice if the .NET framework just gave functions/methods from the BitConverter class that just explicitly returned an array of bytes in the proper requested endianness. I've done some functions like this in other code, but is there a shorter more direct way? (efficiency is key since this concept is used a TON in various crypto and password derivation contexts, including PBKDF2, Skein, HMAC, BLAKE2, AES and others) // convert an unsigned int into an array of bytes BIG ENDIEN // per

问题 I am having to deal with raw bytes in a project and I need to basically do something like this byte[] ToBytes(){ byte[] buffer=new byte[somelength]; byte[] tmp; tmp=BitConverter.GetBytes(SomeShort); buffer[0]=tmp[0]; buffer[1]=tmp[1]; tmp=BitConverter.GetBytes(SomeOtherShort); buffer[2]=tmp[0]; buffer[3]=tmp[1]; } I feel like this is so wrong yet I can't find any better way of doing it. Is there an easier way? 回答1: BinaryWriter is very efficient: byte[] ToBytes() { var ms = new MemoryStream