1 /* 2 * Copyright (c) 1999, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.media.sound; 27 28 import javax.sound.sampled.AudioFileFormat; 29 import javax.sound.sampled.AudioFormat; 30 31 /** 32 * AU file format. 33 * 34 * @author Jan Borgersen 35 */ 36 final class AuFileFormat extends StandardFileFormat { 37 38 // magic numbers 39 static final int AU_SUN_MAGIC = 0x2e736e64; // ".snd" 40 41 // encodings 42 static final int AU_ULAW_8 = 1; /* 8-bit ISDN u-law */ 43 static final int AU_LINEAR_8 = 2; /* 8-bit linear PCM */ 44 static final int AU_LINEAR_16 = 3; /* 16-bit linear PCM */ 45 static final int AU_LINEAR_24 = 4; /* 24-bit linear PCM */ 46 static final int AU_LINEAR_32 = 5; /* 32-bit linear PCM */ 47 static final int AU_FLOAT = 6; /* 32-bit IEEE floating point */ 48 static final int AU_DOUBLE = 7; /* 64-bit IEEE floating point */ 49 // we don't support these ... 50 // static final int AU_ADPCM_G721 = 23; /* 4-bit CCITT g.721 ADPCM */ 51 // static final int AU_ADPCM_G722 = 24; /* CCITT g.722 ADPCM */ 52 // static final int AU_ADPCM_G723_3 = 25; /* CCITT g.723 3-bit ADPCM */ 53 // static final int AU_ADPCM_G723_5 = 26; /* CCITT g.723 5-bit ADPCM */ 54 static final int AU_ALAW_8 = 27; /* 8-bit ISDN A-law */ 55 56 static final int AU_HEADERSIZE = 24; 57 58 /** 59 * According the specification of AU file format this is the value for 60 * length field if length is not known. This is a maximum possible value for 61 * the unsigned int. 62 */ 63 static final long /*unsigned int */ UNKNOWN_SIZE = 0xffffffffL; 64 65 private int auType; 66 AuFileFormat(final AudioFileFormat.Type type, final long byteLength, final AudioFormat format, final long frameLength)67 AuFileFormat(final AudioFileFormat.Type type, final long byteLength, 68 final AudioFormat format, final long frameLength) { 69 super(type, byteLength, format, frameLength); 70 71 AudioFormat.Encoding encoding = format.getEncoding(); 72 73 auType = -1; 74 75 if (AudioFormat.Encoding.ALAW.equals(encoding)) { 76 if (format.getSampleSizeInBits() == 8) { 77 auType = AU_ALAW_8; 78 } 79 } else if (AudioFormat.Encoding.ULAW.equals(encoding)) { 80 if (format.getSampleSizeInBits() == 8) { 81 auType = AU_ULAW_8; 82 } 83 } else if (AudioFormat.Encoding.PCM_SIGNED.equals(encoding)) { 84 if (format.getSampleSizeInBits() == 8) { 85 auType = AU_LINEAR_8; 86 } else if (format.getSampleSizeInBits() == 16) { 87 auType = AU_LINEAR_16; 88 } else if (format.getSampleSizeInBits() == 24) { 89 auType = AU_LINEAR_24; 90 } else if (format.getSampleSizeInBits() == 32) { 91 auType = AU_LINEAR_32; 92 } 93 } else if (AudioFormat.Encoding.PCM_FLOAT.equals(encoding)) { 94 if (format.getSampleSizeInBits() == 32) { 95 auType = AU_FLOAT; 96 } else if (format.getSampleSizeInBits() == 64) { 97 auType = AU_DOUBLE; 98 } 99 } 100 } 101 getAuType()102 public int getAuType() { 103 return auType; 104 } 105 } 106