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