No, there is no built-in method to do that. But, directly copied from HERE (with two fixes applied to the original code): /** * Knuth-Morris-Pratt Algorithm for Pattern Matching */ class KMPMatch { /** * Finds the first occurrence of the pattern in the text. */ public static int indexOf(byte[] data, byte[] pattern) { if … Read more
Take a look at the ignore_user_abort and connection_abort function.
I used this in the end: function draw(imgData, frameCount) { var r = new FileReader(); r.readAsBinaryString(imgData); r.onload = function(){ var img=new Image(); img.onload = function() { cxt.drawImage(img, 0, 0, canvas.width, canvas.height); } img.src = “data:image/jpeg;base64,”+window.btoa(r.result); }; } I needed to read the bytes into a string before using btoa().
This is an alternative method int w= 100; int h = 200; int ch = 3; //number of channels (ie. assuming 24 bit RGB in this case) byte[] imageData = new byte[w*h*ch]; //you image data here Bitmap bitmap = new Bitmap(w,h,PixelFormat.Format24bppRgb); BitmapData bmData = bitmap.LockBits(new System.Drawing.Rectangle(0, 0, bitmap.Width, bitmap.Height), ImageLockMode.ReadWrite, bitmap.PixelFormat); IntPtr pNative = bmData.Scan0; … Read more
The code is treating the first bit as the low bit of the word, so you end up with each word reversed. As a quick-and-dirty fix, try this: bytes[byteIndex] |= (byte)(1 << (7-bitIndex)); That puts the first bit in the array at the highest position in the first byte, etc.
Convert hex to byte and byte to hex. public static byte[] hexStringToByteArray(String s) { int len = s.length(); byte[] data = new byte[len/2]; for(int i = 0; i < len; i+=2){ data[i/2] = (byte) ((Character.digit(s.charAt(i), 16) << 4) + Character.digit(s.charAt(i+1), 16)); } return data; } final protected static char[] hexArray = {‘0′,’1′,’2′,’3′,’4′,’5′,’6′,’7′,’8′,’9′,’A’,’B’,’C’,’D’,’E’,’F’}; public static String … Read more
Because subtraction is coercing up to an integer. As I recall, byte is an unsigned type in C#, so subtraction can take you out of the domain of bytes.
Well, this is 2017 and you can now use Resource Timing API to extract an image’s transferSize, encodedBodySize, decodedBodySize within javascript: Below is the code to access size information for all the imgs on a page (see the caveat to all below): var imgElems = document.getElementsByTagName(‘img’); for ( var i=0, len = imgElems.length; i < … Read more
This has been hard to find! But since API 8, there is a YuvImage class in android.graphics. It’s not an Image descendent, so all you can do with it is save it to Jpeg, but you could save it to memory stream and then load into Bitmap Image if that’s what you need. import android.graphics.YuvImage; … Read more
Primitive types are easy because they have a defined representation as a byte array. Other objects are not because they may contain things that cannot be persisted, like file handles, references to other objects, etc. You can try persisting an object to a byte array using BinaryFormatter: public byte[] ToByteArray<T>(T obj) { if(obj == null) … Read more