List of usage examples for java.io DataInputStream readUnsignedShort
public final int readUnsignedShort() throws IOException
readUnsignedShort method of DataInput. From source file:org.squidy.nodes.Tracking.java
/** * //from w w w.j av a2 s . co m */ private void startMulticastServer() throws ProcessException { InetAddress multicastGroup; try { multicastGroup = InetAddress.getByName(multicastGroupAddress); } catch (UnknownHostException e) { throw new ProcessException(e.getMessage(), e); } server = new MulticastServer(multicastGroup, port); server.addMulticastListener(new MulticastAdapter() { /* (non-Javadoc) * @see org.squidy.manager.protocol.udp.UDPListener#parseData(byte[]) */ public void parseData(byte[] data) { // TODO [SF]: Do your parsing stuff here!!! ByteArrayInputStream bais = new ByteArrayInputStream(data); DataInputStream instream = new DataInputStream(bais); try { System.out.println("short: " + instream.readUnsignedShort() + " | " + instream.readUnsignedShort() + " | " + (instream.readInt() & 0x7F)); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } // // String s = new String(data); // System.out.println(s); /* * Data is coded with a started MessageID = 7 lastFrameCounter = <FrameId>; if (<singleMarker == true>){ trackedBodies = <numTrackedSingleMarker>; bodyId = 0; //Read x,y,z and convert to mm x = <x>*100; y = <y>*100; z = <z>*100; publish(new DataPosition3D(Tracking.class, bodyID, x, y, z, width, height, depth, lastFrameCounter, trackedBodies)); // only publish single marker positions, not the ones belonging to a rigit body } if (<rigitBody == true>){ trackedBodies = <numTrackedRigitBodies>; bodyId = <rigitBodyId>; //Read x,y,z and convert to mm x = <x>*100; y = <y>*100; z = <z>*100; //Read quatrions qx = <qx>; qy = <qy>; qz = <qz>; qw = <qw>; //Transform to rotation matrix //Spalte 1: rxx = 2*(qx*qx + qw*qw)-1; ryx = 2*(qx*qy + qz*qw); rzx = 2*(qx*qz - qy*qw); Spalte 2: rxy = 2*(qx*qy - qz*qw); ryy = 2*(qy*qy + qq*qw)-1; rzy = 2*(qy*qz + qx*qw); Spalte 3: rxz = 2*(qx*qz + qy*qw); ryz = 2*(qy*qz - qx*qw); rzz = 2*(qz*qz + qw*qw)-1; //quadToMatrix: ? //m[0] = 1-2*q[1]*q[1]-2*q[2]*q[2]; m[1] = 2*q[0]*q[1]-2*q[3]*q[2]; m[2] = 2*q[0]*q[2]+2*q[3]*q[1]; //m[3] = 2*q[0]*q[1]+2*q[3]*q[2]; m[4] = 1-2*q[0]*q[0]-2*q[2]*q[2]; m[5] = 2*q[1]*q[2]-2*q[3]*q[0]; //m[6] = 2*q[0]*q[2]-2*q[3]*q[1]; m[7] = 2*q[1]*q[2]+2*q[3]*q[0]; m[8] = 1-2*q[0]*q[0]-2*q[1]*q[1]; publish(new DataPosition6D(arTracking.getClass(), bodyID, x, y, z, width, height, depth, rxx, ryx, rzx, rxy, ryy, rzy, rxz, ryz, rzz, lastFrameCounter, trackedBodies)); } */ // // ... } }); }
From source file:tor.TorCrypto.java
/** * Parses a public key encoded as ASN.1// w w w . ja v a 2 s . c o m * * @param rsapublickey ASN.1 Encoded public key * @return PublicKey */ public static PublicKey asn1GetPublicKey(byte[] rsapublickey) { int blobsize = rsapublickey.length; DataInputStream dis = null; int jint = 0; // int to represent unsigned byte or unsigned short int datacount = 0; try { // --- Try to read the ANS.1 encoded RSAPublicKey blob ------------- ByteArrayInputStream bis = new ByteArrayInputStream(rsapublickey); dis = new DataInputStream(bis); if (dis.readByte() != 0x30) // asn.1 encoded starts with 0x30 return null; jint = dis.readUnsignedByte(); // asn.1 is 0x80 plus number of bytes // representing data count if (jint == 0x81) datacount = dis.readUnsignedByte(); // datalength is specified // in next byte. else if (jint == 0x82) // bytes count for any supported keysize // would be at most 2 bytes datacount = dis.readUnsignedShort(); // datalength is specified // in next 2 bytes else return null; // all supported publickey byte-sizes can be // specified in at most 2 bytes if ((jint - 0x80 + 2 + datacount) != blobsize) // sanity check for // correct number of // remaining bytes return null; // System.out // .println("\nRead outer sequence bytes; validated outer asn.1 consistency "); // ------- Next attempt to read Integer sequence for modulus ------ if (dis.readUnsignedByte() != 0x02) // next byte read must be // Integer asn.1 specifier return null; jint = dis.readUnsignedByte(); // asn.1 is 0x80 plus number of bytes // representing data count if (jint == 0x81) datacount = dis.readUnsignedByte(); // datalength is specified // in next byte. else if (jint == 0x82) // bytes count for any supported keysize // would be at most 2 bytes datacount = dis.readUnsignedShort(); // datalength is specified // in next 2 bytes else return null; // all supported publickey modulus byte-sizes can // be specified in at most 2 bytes // ---- next bytes are big-endian ordered modulus ----- byte[] modulus = new byte[datacount]; int modbytes = dis.read(modulus); if (modbytes != datacount) // if we can read enought modulus bytes // ... return null; //System.out.println("Read modulus"); // ------- Next attempt to read Integer sequence for public exponent // ------ if (dis.readUnsignedByte() != 0x02) // next byte read must be // Integer asn.1 specifier return null; datacount = dis.readUnsignedByte(); // size of modulus is specified // in one byte byte[] exponent = new byte[datacount]; int expbytes = dis.read(exponent); if (expbytes != datacount) return null; //System.out.println("Read exponent"); // ----- Finally, create the PublicKey object from modulus and // public exponent -------- RSAPublicKeySpec pubKeySpec = new RSAPublicKeySpec(new BigInteger(1, modulus), new BigInteger(1, exponent)); KeyFactory keyFactory = KeyFactory.getInstance("RSA"); PublicKey pubKey = keyFactory.generatePublic(pubKeySpec); return pubKey; } catch (Exception exc) { return null; } finally { try { dis.close(); } catch (Exception exc) { /* ignore */ ; } } }
From source file:VASSAL.tools.imports.adc2.MapBoard.java
/** * Hex lines are like spokes of the hex and are typically used for things like roads or other elements that * traverse from hex to hex. The direction of each spoke is encoded as bit flags, and while ADC2 could encode * each hex with only one record, modules typically have a separate record for every spoke resulting in * data inflation.//from w w w.j a va 2 s. c om */ protected void readHexLineBlock(DataInputStream in) throws IOException { ADC2Utils.readBlockHeader(in, "Hex Line"); int nHexLines = ADC2Utils.readBase250Word(in); for (int i = 0; i < nHexLines; ++i) { int index = ADC2Utils.readBase250Word(in); int line = in.readUnsignedByte(); int direction = in.readUnsignedShort(); if (isOnMapBoard(index)) hexLines.add(new HexLine(index, line, direction)); } }