83 lines
2.9 KiB
Java
83 lines
2.9 KiB
Java
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/*
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* AiffTool.java
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*
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* This file is part of Tritonus: http://www.tritonus.org/
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*/
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/*
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* Copyright (c) 2000 by Florian Bomers <http://www.bomers.de>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as published
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* by the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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/*
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|<--- this code is formatted to fit into 80 columns --->|
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*/
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package org.tritonus.sampled.file;
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import javax.sound.sampled.AudioFormat;
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import javax.sound.sampled.AudioFileFormat;
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import javax.sound.sampled.AudioSystem;
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/**
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* Common constants and methods for handling aiff and aiff-c files.
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*
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* @author Florian Bomers
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*/
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public class AiffTool {
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public static final int AIFF_FORM_MAGIC = 0x464F524D;
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public static final int AIFF_AIFF_MAGIC = 0x41494646;
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public static final int AIFF_AIFC_MAGIC = 0x41494643;
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public static final int AIFF_COMM_MAGIC = 0x434F4D4D;
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public static final int AIFF_SSND_MAGIC = 0x53534E44;
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public static final int AIFF_FVER_MAGIC = 0x46564552;
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public static final int AIFF_COMM_UNSPECIFIED = 0x00000000; // "0000"
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public static final int AIFF_COMM_PCM = 0x4E4F4E45; // "NONE"
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public static final int AIFF_COMM_ULAW = 0x756C6177; // "ulaw"
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public static final int AIFF_COMM_IMA_ADPCM = 0x696D6134; // "ima4"
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public static final int AIFF_FVER_TIME_STAMP = 0xA2805140; // May 23, 1990, 2:40pm
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public static int getFormatCode(AudioFormat format) {
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AudioFormat.Encoding encoding = format.getEncoding();
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int nSampleSize = format.getSampleSizeInBits();
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boolean bigEndian = format.isBigEndian();
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// $$fb 2000-08-16: check the frame size, too.
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boolean frameSizeOK=format.getFrameSize()==AudioSystem.NOT_SPECIFIED
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|| format.getChannels()!=AudioSystem.NOT_SPECIFIED
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|| format.getFrameSize()==nSampleSize/8*format.getChannels();
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if ((encoding.equals(AudioFormat.Encoding.PCM_SIGNED))
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&& ((bigEndian && nSampleSize>=16 && nSampleSize<=32) || (nSampleSize==8))
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&& frameSizeOK) {
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return AIFF_COMM_PCM;
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} else if (encoding.equals(AudioFormat.Encoding.ULAW) && nSampleSize == 8 && frameSizeOK) {
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return AIFF_COMM_ULAW;
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} else if (encoding.equals(new AudioFormat.Encoding("IMA_ADPCM")) && nSampleSize == 4) {
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return AIFF_COMM_IMA_ADPCM;
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} else {
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return AIFF_COMM_UNSPECIFIED;
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}
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}
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}
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/*** AiffTool.java ***/
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