1dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu/* 2dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * Copyright 2012 Sebastian Annies, Hamburg 3dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * 4dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * Licensed under the Apache License, Version 2.0 (the License); 5dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * you may not use this file except in compliance with the License. 6dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * You may obtain a copy of the License at 7dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * 8dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * http://www.apache.org/licenses/LICENSE-2.0 9dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * 10dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * Unless required by applicable law or agreed to in writing, software 11dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * distributed under the License is distributed on an AS IS BASIS, 12dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * See the License for the specific language governing permissions and 14dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * limitations under the License. 15dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu */ 16dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhupackage com.googlecode.mp4parser.util; 17dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 18dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhuimport java.nio.ByteBuffer; 19dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhuimport java.nio.ByteOrder; 20dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhuimport java.util.UUID; 21dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 22dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu/** 23dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * UUID from/to byte array. 24dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu */ 25dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhupublic class UUIDConverter { 26dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public static byte[] convert(UUID uuid) { 27dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 28dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu long msb = uuid.getMostSignificantBits(); 29dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu long lsb = uuid.getLeastSignificantBits(); 30dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu byte[] buffer = new byte[16]; 31dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 32dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu for (int i = 0; i < 8; i++) { 33dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu buffer[i] = (byte) (msb >>> 8 * (7 - i)); 34dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 35dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu for (int i = 8; i < 16; i++) { 36dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu buffer[i] = (byte) (lsb >>> 8 * (7 - i)); 37dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 38dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 39dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu return buffer; 40dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 41dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 42dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 43dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public static UUID convert(byte[] uuidBytes) { 44dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu ByteBuffer b = ByteBuffer.wrap(uuidBytes); 45dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu b.order(ByteOrder.BIG_ENDIAN); 46dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu return new UUID(b.getLong(), b.getLong()); 47dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 48dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu} 49