Pixel data is ARGB, 1 byte for alpha, 1 for red, 1 for green, 1 for blue. Alpha is the most significant byte, blue is the least significant. On a little-endian machine, like yours and many others, the little end is stored first so the byte order is bb gg rr aa. So 0 0 … Read more
This works: var scale:Number = 1.0/6.0; var matrix:Matrix = new Matrix(); matrix.scale(scale, scale); var smallBMD:BitmapData = new BitmapData(bigBMD.width * scale, bigBMD.height * scale, true, 0x000000); smallBMD.draw(bigBMD, matrix, null, null, null, true); var bitmap:Bitmap = new Bitmap(smallBMD, PixelSnapping.NEVER, true);
Its safe if you marshal.copy data rather than setting scan0 (directly or via that overload of BitMap()). You don’t want to keep managed objects pinned, this will constrain the garbage collector. If you copy, perfectly safe. The input array is managed and can be moved by the GC, scan0 is an unmanaged pointer that would … Read more
public String BitMapToString(Bitmap bitmap){ ByteArrayOutputStream baos=new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.PNG,100, baos); byte [] b=baos.toByteArray(); String temp=Base64.encodeToString(b, Base64.DEFAULT); return temp; } Here is the reverse procedure for converting string to bitmap but string should Base64 encoding /** * @param encodedString * @return bitmap (from given string) */ public Bitmap StringToBitMap(String encodedString){ try { byte [] encodeByte=Base64.decode(encodedString,Base64.DEFAULT); Bitmap bitmap=BitmapFactory.decodeByteArray(encodeByte, … Read more