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    1   /*
    2    * Copyright (c) 1999, 2007, 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   /**
   33    * AIFF file format.
   34    *
   35    * @author Jan Borgersen
   36    */
   37   
   38   class AiffFileFormat extends AudioFileFormat {
   39   
   40       static final int AIFF_MAGIC         = 1179603533;
   41   
   42       // for writing AIFF
   43       static final int AIFC_MAGIC                 = 0x41494643;   // 'AIFC'
   44       static final int AIFF_MAGIC2                = 0x41494646;   // 'AIFF'
   45       static final int FVER_MAGIC                 = 0x46564552;   // 'FVER'
   46       static final int FVER_TIMESTAMP             = 0xA2805140;   // timestamp of last AIFF-C update
   47       static final int COMM_MAGIC                 = 0x434f4d4d;   // 'COMM'
   48       static final int SSND_MAGIC                 = 0x53534e44;   // 'SSND'
   49   
   50       // compression codes
   51       static final int AIFC_PCM                   = 0x4e4f4e45;   // 'NONE' PCM
   52       static final int AIFC_ACE2                  = 0x41434532;   // 'ACE2' ACE 2:1 compression
   53       static final int AIFC_ACE8                  = 0x41434538;   // 'ACE8' ACE 8:3 compression
   54       static final int AIFC_MAC3                  = 0x4d414333;   // 'MAC3' MACE 3:1 compression
   55       static final int AIFC_MAC6                  = 0x4d414336;   // 'MAC6' MACE 6:1 compression
   56       static final int AIFC_ULAW                  = 0x756c6177;   // 'ulaw' ITU G.711 u-Law
   57       static final int AIFC_IMA4                  = 0x696d6134;   // 'ima4' IMA ADPCM
   58   
   59       // $$fb static approach not good, but needed for estimation
   60       static final int AIFF_HEADERSIZE    = 54;
   61   
   62       //$$fb 2001-07-13: added management of header size in this class
   63   
   64       /** header size in bytes */
   65       private int headerSize=AIFF_HEADERSIZE;
   66   
   67       /** comm chunk size in bytes, inclusive magic and length field */
   68       private int commChunkSize=26;
   69   
   70       /** FVER chunk size in bytes, inclusive magic and length field */
   71       private int fverChunkSize=0;
   72   
   73       AiffFileFormat( AudioFileFormat aff ) {
   74           this( aff.getType(), aff.getByteLength(), aff.getFormat(), aff.getFrameLength() );
   75       }
   76   
   77       AiffFileFormat(Type type, int byteLength, AudioFormat format, int frameLength) {
   78           super(type, byteLength, format, frameLength);
   79       }
   80   
   81       int getHeaderSize() {
   82           return headerSize;
   83       }
   84   
   85       int getCommChunkSize() {
   86           return commChunkSize;
   87       }
   88   
   89       int getFverChunkSize() {
   90           return fverChunkSize;
   91       }
   92   
   93       int getSsndChunkOffset() {
   94           return getHeaderSize()-16;
   95       }
   96   
   97   }

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