bytearray

问题 I have this uncompressed byte array: 0E 7C BD 03 6E 65 67 6C 65 63 74 00 00 00 00 00 00 00 00 00 42 52 00 00 01 02 01 00 BB 14 8D 37 0A 00 00 01 00 00 00 00 05 E9 05 E9 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00 00 00 81 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 05 00 00 01 00 00 00 And I need to compress it using the deflate algorithm (implemented in zlib), from what I searched the equivalent in C# would be using GZipStream but I can't match the compressed

问题 Am having a bitmap , so I want to upload a webserivceas string and want to retrive the string. For converting bitmap to string am using: ByteArrayOutputStream stream = new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream); byte[] byteArray = stream.toByteArray(); strBase64 = Base64.encodeToString(byteArray, Base64.URL_SAFE); this above String is using as property to in soapobject to upload. But am getting Out of memory on a 11674900-byte allocation , while print

问题 Am having a bitmap , so I want to upload a webserivceas string and want to retrive the string. For converting bitmap to string am using: ByteArrayOutputStream stream = new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream); byte[] byteArray = stream.toByteArray(); strBase64 = Base64.encodeToString(byteArray, Base64.URL_SAFE); this above String is using as property to in soapobject to upload. But am getting Out of memory on a 11674900-byte allocation , while print

问题 How to convert Little-endian ByteArray to Big-endian in AS3? I convert bitmapData to Big-endian ByteArray and then push it into memory with Adobe Alchemy. And then when i read it from memory i get Little-endian ByteArray. How to get Big-endian. I use this example code http://blog.debit.nl/2009/03/using-bytearrays-in-actionscript-and-alchemy/ (Memory allocation in C with direct access in Actionscript (FAST!!)) Code: var ba:ByteArray = currentBitmapData.getPixels( currentBitmapData.rect ); ba

问题 I am new to windows phone dev. My small app need a bytesarray from image (photo gallery). I tried many ways to convert, but it did not work fine. here is my code: public static byte[] ConvertBitmapImageToByteArray(BitmapImage bitmapImage) { using (var ms = new MemoryStream()) { var btmMap = new WriteableBitmap(bitmapImage.PixelWidth, bitmapImage.PixelHeight); // write an image into the stream btmMap.SaveJpeg(ms, bitmapImage.PixelWidth, bitmapImage.PixelHeight, 0, 100); return ms.ToArray(); }

问题 I would like to extract a set of coordinates from a byte array into a DoubleBuffer. Below is an example of how I extract a set of coordinates from the main byte array into another byte array. byte intPoints[] = new byte[4]; byte geomCoords[]; ... is = new ByteArrayInputStream(stmt.column_bytes(0)); //reads the polygon from db ... is.read(intPoints); //intPoints now holds the number of points in the polygon //After this is read the actual coordinate list is next //Set the size of geomCoords to

问题 I want to send file with OutputStream, so I use byte[] = new byte[size of file ] but I don't know what the max size is that i can use. This is my code. File file = new File(sourceFilePath); if (file.isFile()) { try { DataInputStream diStream = new DataInputStream(new FileInputStream(file)); long len = (int) file.length(); if(len>Integer.MAX_VALUE){ file_info.setstatu("Error"); } else{ byte[] fileBytes = new byte[(int) len]; int read = 0; int numRead = 0; while (read < fileBytes.length &&

问题 I receive a datapacket containing a byte array and I have to get some integer values from it. Here is a part of the documentation. Can someone help me please? This comes in a 4-byte array. Year from 1990 to 2052 (6 bit), Month from 1 to 12 (4 bit), Day from 1 to 31 (5 bit), Hour from 0 to 23 (5 bit), Minute from 0 to 59 (6 bit), Second from 0 to 59 (6 bit) Default value: 1 January 2000, 12:00:00 The format of the message is in little endian. 回答1: What you need is some bitwise operations.

问题 I am facing this error in parsing json data : Expected BEGIN_ARRAY but was STRING at line 1 column 1156 I could'nt find the solution. My json data is : { "project": [ { "abbreviation": "abd", "customer": "customer1", "description": "description1", "icon": "iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAC4UlEQVR42sXTXUhTYRgH8NNNXkTdmPlRpltqalgXZlB4hCC6C8VyYjErtbCoNLJiqQmOtqmYCkUXdhNEGSHYuVXCj81N58dcO+rOPt3c2dnOWTubeSPUv6PZx1U3XfTAj4f3gf/zXL0E8d+LoqgEw

问题 I want to convert a numpy array to a bytestring in python 2.7. Lets say my numpy array a is a simple 2x2 array, looking like this: [[1,10], [16,255]] My question is, how to convert this array to a string of bytes or bytearray with the output looking like: \x01\x0A\x10\xff or equally well: bytearray(b'\x01\x0A\x10\xff') 回答1: Assuming a is an array of np.int8 type, you can use tobytes() to get the output you specify: >>> a.tobytes() b'\x01\n\x10\xff' Note that my terminal prints \x0A as the