bytearray

问题 I have an mp3 file as byte array. How to turn it back to a sound and play using javascript? Thanks 回答1: As far as I know this is decidedly non trivial. You can turn the array into a data URI, and then play it back normally. You can post it back to a server to do the encoding and play it back normally. You can use a fancy API 2 seems inefficient, 3 requires browser specific support. So, use 1. I havent tried it, but check out http://www.bitsnbites.eu/?p=1. You should expect this to be way less

问题 How can I convert double to byte array in Java? I looked at many other posts, but couldn't figure out the right way. Input = 65.43 byte[] size = 6 precision = 2 (this might change based on input) expected output (byte[]) = 006543 Can I do it without using functions like doubleToLongBits()? 回答1: Real double to byte[] Conversion double d = 65.43; byte[] output = new byte[8]; long lng = Double.doubleToLongBits(d); for(int i = 0; i < 8; i++) output[i] = (byte)((lng >> ((7 - i) * 8)) & 0xff); /

问题 I have a Document (org.w3c.dom.Document), I convert this document to array of byte: private byte[] obtenerBytesDeDocument(Document documentoXml) throws Exception { Source source = new DOMSource( documentoXml ); ByteArrayOutputStream out = new ByteArrayOutputStream(); Result result = new StreamResult(out); TransformerFactory factory = TransformerFactory.newInstance(); Transformer transformer = factory.newTransformer(); transformer.transform(source, result); byte[] butesXml = out.toByteArray();

问题 how would I convert an integer to an array of 4 bytes? Here is the exact code I want to port (in C#) int i = 123456; byte[] ar = BitConverter.GetBytes(i); // ar will contain {64, 226, 1, 0} How would I do the exact same thing in PHP ? 回答1: The equivalent conversion is $i = 123456; $ar = unpack("C*", pack("L", $i)); See it in action . You should be aware though that the byte order (little/big endian) is dependent on the machine architecture (as it is also in the case of BitConverter ). That

问题 how would I convert an integer to an array of 4 bytes? Here is the exact code I want to port (in C#) int i = 123456; byte[] ar = BitConverter.GetBytes(i); // ar will contain {64, 226, 1, 0} How would I do the exact same thing in PHP ? 回答1: The equivalent conversion is $i = 123456; $ar = unpack("C*", pack("L", $i)); See it in action . You should be aware though that the byte order (little/big endian) is dependent on the machine architecture (as it is also in the case of BitConverter ). That

问题 Despite the many related questions, I can't find any that match my problem. I'd like to change a binary string (for example, "0110100001101001" ) into a byte array (same example, b"hi" ). I tried this: bytes([int(i) for i in "0110100001101001"]) but I got: b'\x00\x01\x01\x00\x01' #... and so on What's the correct way to do this in Python 3? 回答1: Here's an example of doing it the first way that Patrick mentioned: convert the bitstring to an int and take 8 bits at a time. The natural way to do

问题 I'm trying to stream a webcam across from a client to a server but I'm having difficulty at the conversion from the byte array back to the bitmap on the server. Here's the code: public void handlerThread() { Socket handlerSocket = (Socket)alSockets[alSockets.Count-1]; NetworkStream networkStream = new NetworkStream(handlerSocket); int thisRead=0; int blockSize=1024; Byte[] dataByte = new Byte[blockSize]; lock(this) { // Only one process can access // the same file at any given time while(true

问题 I have a rectange which I want to set an OpacityMask for. I tried it directly from a PNG Image, which was working. But since my image comes from a Database later, I tried saving the PNG into an array first, and then restoring the BitmapImage from it. This is what I have now: bodenbitmap = new BitmapImage(); bodenbitmap.BeginInit(); bodenbitmap.UriSource = new Uri(@"C:\bla\plan.png", UriKind.Relative); bodenbitmap.EndInit(); PngBitmapEncoder enc = new PngBitmapEncoder(); enc.Frames.Add

问题 I have a .net application in c# which receives a byte array and I need to send it to a Java Program as an argument, which is the best way to do it? NOTE: Its all in the same server. 回答1: Start a Process and redirect the input stream 回答2: Send it over the Looback address ( 127.0.0.1 ) via sockets (C# & Java). If it's just a simple byte[] , then this will be VERY simple on both ends. With this, both the C# and Java applications can continue their process without interuption. 来源： https:/

问题 I am tring to read couple of bytes from byteData as mentioned below in my C++ code. The actual value within byteData is a binary blob byte array in BIG-ENDIAN byte order format. So I cannot simply just "cast" the byte array into a String.. byteData byte array is composed of these three things - First is `schemaId` which is of two bytes (short datatype in Java) Second is `lastModifiedDate` which is of eight bytes (long datatype in Java) Third is the length of actual `byteArray` within