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.coremedia.iso; 17dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 18dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhuimport java.nio.ByteBuffer; 19dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 20dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhupublic final class IsoTypeWriter { 21dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 22dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public static void writeUInt64(ByteBuffer bb, long u) { 23dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu bb.putLong(u); 24dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 25dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 26dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public static void writeUInt32(ByteBuffer bb, long u) { 27dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu bb.putInt((int) u); 28dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 29dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 30dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 31dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public static void writeUInt32BE(ByteBuffer bb, long u) { 32dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu assert u >= 0 && u <= 1L << 32 : "The given long is not in the range of uint32 (" + u + ")"; 33dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu writeUInt16BE(bb, (int) u & 0xFFFF); 34dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu writeUInt16BE(bb, (int) ((u >> 16) & 0xFFFF)); 35dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 36dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 37dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 38dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 39dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public static void writeUInt24(ByteBuffer bb, int i) { 40dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu i = i & 0xFFFFFF; 41dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu writeUInt16(bb, i >> 8); 42dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu writeUInt8(bb, i); 43dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 44dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 45dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 46dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 47dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public static void writeUInt16(ByteBuffer bb, int i) { 48dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu i = i & 0xFFFF; 49dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu writeUInt8(bb, i >> 8); 50dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu writeUInt8(bb, i & 0xFF); 51dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 52dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 53dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public static void writeUInt16BE(ByteBuffer bb, int i) { 54dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu i = i & 0xFFFF; 55dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu writeUInt8(bb, i & 0xFF); 56dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu writeUInt8(bb, i >> 8); 57dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 58dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 59dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public static void writeUInt8(ByteBuffer bb, int i) { 60dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu i = i & 0xFF; 61dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu bb.put((byte) i); 62dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 63dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 64dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 65dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public static void writeFixedPont1616(ByteBuffer bb, double v) { 66dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu int result = (int) (v * 65536); 67dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu bb.put((byte) ((result & 0xFF000000) >> 24)); 68dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu bb.put((byte) ((result & 0x00FF0000) >> 16)); 69dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu bb.put((byte) ((result & 0x0000FF00) >> 8)); 70dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu bb.put((byte) ((result & 0x000000FF))); 71dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 72dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 73dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public static void writeFixedPont88(ByteBuffer bb, double v) { 74dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu short result = (short) (v * 256); 75dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu bb.put((byte) ((result & 0xFF00) >> 8)); 76dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu bb.put((byte) ((result & 0x00FF))); 77dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 78dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 79dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public static void writeIso639(ByteBuffer bb, String language) { 80dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu if (language.getBytes().length != 3) { 81dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu throw new IllegalArgumentException("\"" + language + "\" language string isn't exactly 3 characters long!"); 82dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 83dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu int bits = 0; 84dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu for (int i = 0; i < 3; i++) { 85dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu bits += (language.getBytes()[i] - 0x60) << (2 - i) * 5; 86dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 87dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu writeUInt16(bb, bits); 88dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 89dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 90dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public static void writeUtf8String(ByteBuffer bb, String string) { 91dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 92dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu bb.put(Utf8.convert(string)); 93dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu writeUInt8(bb, 0); 94dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 95dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu} 96