--- a/src/jlibrtp/StaticProcs.java Thu May 28 14:26:06 2009 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,270 +0,0 @@
-/**
- * Java RTP Library (jlibrtp)
- * Copyright (C) 2006 Arne Kepp
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-package jlibrtp;
-
-/**
- * Generic functions for converting between unsigned integers and byte[]s.
- *
- * @author Arne Kepp
- */
-public class StaticProcs {
-
- /**
- * Converts an integer into an array of bytes.
- * Primarily used for 16 bit unsigned integers, ignore the first two octets.
- *
- * @param i a 16 bit unsigned integer in an int
- * @return byte[2] representing the integer as unsigned, most significant bit first.
- */
- public static byte[] uIntIntToByteWord(int i) {
- byte[] byteWord = new byte[2];
- byteWord[0] = (byte) ((i >> 8) & 0x000000FF);
- byteWord[1] = (byte) (i & 0x00FF);
- return byteWord;
- }
-
- /**
- * Converts an unsigned 32 bit integer, stored in a long, into an array of bytes.
- *
- * @param j a long
- * @return byte[4] representing the unsigned integer, most significant bit first.
- */
- public static byte[] uIntLongToByteWord(long j) {
- int i = (int) j;
- byte[] byteWord = new byte[4];
- byteWord[0] = (byte) ((i >>> 24) & 0x000000FF);
- byteWord[1] = (byte) ((i >> 16) & 0x000000FF);
- byteWord[2] = (byte) ((i >> 8) & 0x000000FF);
- byteWord[3] = (byte) (i & 0x00FF);
- return byteWord;
- }
-
- /**
- * Combines two bytes (most significant bit first) into a 16 bit unsigned integer.
- *
- * @param index of most significant byte
- * @return int with the 16 bit unsigned integer
- */
- public static int bytesToUIntInt(byte[] bytes, int index) {
- int accum = 0;
- int i = 1;
- for (int shiftBy = 0; shiftBy < 16; shiftBy += 8 ) {
- accum |= ( (long)( bytes[index + i] & 0xff ) ) << shiftBy;
- i--;
- }
- return accum;
- }
-
- /**
- * Combines four bytes (most significant bit first) into a 32 bit unsigned integer.
- *
- * @param bytes
- * @param index of most significant byte
- * @return long with the 32 bit unsigned integer
- */
- public static long bytesToUIntLong(byte[] bytes, int index) {
- long accum = 0;
- int i = 3;
- for (int shiftBy = 0; shiftBy < 32; shiftBy += 8 ) {
- accum |= ( (long)( bytes[index + i] & 0xff ) ) << shiftBy;
- i--;
- }
- return accum;
- }
-
- /**
- * Converts an arbitrary number of bytes, assumed to represent an unsigned integer,
- * to a Java long
- */
- /*public static long bytesToUintLong(byte[] bytes, int firstByte, int lastByte) {
- long accum = 0;
- int i = lastByte - firstByte;
- if(i > 7) {
- System.out.println("!!!! StaticProcs.bytesToUintLong() Can't convert more than 63 bits!");
- return -1;
- }
- int stop = (i+1)*8;
-
- for (int shiftBy = 0; shiftBy < stop; shiftBy += 8 ) {
- accum |= ( (long)( bytes[firstByte + i] & 0xff ) ) << shiftBy;
- i--;
- }
- return accum;
- }*/
-
- /**
- * Converts an arbitrary number of bytes, assumed to represent an unsigned integer,
- * to a Java int
- */
- /* public static int bytesToUintInt(byte[] bytes, int firstByte, int lastByte) {
- int accum = 0;
- int i = lastByte - firstByte;
- if(i > 3) {
- System.out.println("!!!! StaticProcs.bytesToUintLong() Can't convert more than 31 bits!");
- return -1;
- }
- int stop = (i+1)*8;
-
- for (int shiftBy = 0; shiftBy < stop; shiftBy += 8 ) {
- accum |= ( (long)( bytes[firstByte + i] & 0xff ) ) << shiftBy;
- i--;
- }
- return accum;
- }*/
-
- /**
- * Recreates a UNIX timestamp based on the NTP representation used
- * in RTCP SR packets
- *
- * @param ntpTs1 from RTCP SR packet
- * @param ntpTs2 from RTCP SR packet
- * @return the UNIX timestamp
- */
- public static long undoNtpMess(long ntpTs1, long ntpTs2) {
- long timeVal = (ntpTs1 - 2208988800L)*1000;
-
- double tmp = (1000.0*(double)ntpTs2)/((double)4294967295L);
- long ms = (long) tmp;
- //System.out.println(" timeVal: " +Long.toString(timeVal)+ " ms " + Long.toString(ms));
- timeVal += ms;
-
- return timeVal;
- }
-
-
-
- /**
- * Get the bits of a byte
- *
- * @param aByte the byte you wish to convert
- * @return a String of 1's and 0's
- */
- public static String bitsOfByte(byte aByte) {
- int temp;
- String out = "";
- for(int i=7; i>=0; i--) {
- temp = (aByte >>> i);
- temp &= 0x0001;
- out += (""+temp);
- }
- return out;
- }
-
- /**
- * Get the hex representation of a byte
- *
- * @param aByte the byte you wish to convert
- * @return a String of two chars 0-1,A-F
- */
- public static String hexOfByte(byte aByte) {
- String out = "";
-
- for(int i=0; i<2; i++) {
- int temp = (int) aByte;
- if(temp < 0) {
- temp +=256;
- }
- if(i == 0) {
- temp = temp/16;
- } else {
- temp = temp%16;
- }
-
- if( temp > 9) {
- switch(temp) {
- case 10: out += "A"; break;
- case 11: out += "B"; break;
- case 12: out += "C"; break;
- case 13: out += "D"; break;
- case 14: out += "E"; break;
- case 15: out += "F"; break;
- }
- } else {
- out += Integer.toString(temp);
- }
- }
- return out;
- }
-
- /**
- * Get the hex representation of a byte
- *
- * @param hex 4 bytes the byte you wish to convert
- * @return a String of two chars 0-1,A-F
- */
- public static byte byteOfHex(byte[] hex) {
- byte retByte = 0;
- Byte tmp;
- int val = 0;
-
- // First 4 bits
- tmp = hex[0];
- val = tmp.intValue();
- if(val > 64) {
- // Letter
- val -= 55;
- } else {
- // Number
- val -= 48;
- }
- retByte = ((byte) (val << 4));
-
- // Last 4 bits
- tmp = hex[1];
- val = tmp.intValue();
- if(val > 64) {
- // Letter
- val -= 55;
- } else {
- // Number
- val -= 48;
- }
- retByte |= ((byte) val);
-
- return retByte;
- }
-
-
- /**
- * Print the bits of a byte to standard out. For debugging.
- *
- * @param aByte the byte you wish to print out.
- */
- public static void printBits(byte aByte) {
- int temp;
- for(int i=7; i>=0; i--) {
- temp = (aByte >>> i);
- temp &= 0x0001;
- System.out.print(""+temp);
- }
- System.out.println();
- }
-
- public static String bitsOfBytes(byte[] bytes) {
- String str = "";
- //Expensive, but who cares
- for(int i=0; i<bytes.length; i++ ) {
- str += bitsOfByte(bytes[i]) + " ";
- if((i + 1) % 4 == 0)
- str += "\n";
- }
-
- return str;
- }
-}
\ No newline at end of file