/*
* EsdUtils.java
*
* This file is part of Tritonus: http://www.tritonus.org/
*/
/*
* Copyright (c) 1999, 2000 by Matthias Pfisterer
*
*
* 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.mixer.esd;
import javax.sound.sampled.AudioFormat;
import org.tritonus.lowlevel.esd.Esd;
public class EsdUtils
{
public static int getEsdFormat(AudioFormat audioFormat)
{
int nChannels = audioFormat.getChannels();
AudioFormat.Encoding encoding = audioFormat.getEncoding();
int nSampleSize = audioFormat.getSampleSizeInBits();
int nFormat = 0;
if (nSampleSize == 8)
{
if (! encoding.equals(AudioFormat.Encoding.PCM_UNSIGNED))
{
throw new IllegalArgumentException("encoding must be PCM_UNSIGNED for 8 bit data");
}
nFormat |= Esd.ESD_BITS8;
}
else if (nSampleSize == 16)
{
if (! encoding.equals(AudioFormat.Encoding.PCM_SIGNED))
{
throw new IllegalArgumentException("encoding must be PCM_SIGNED for 16 bit data");
}
nFormat |= Esd.ESD_BITS16;
}
else
{
throw new IllegalArgumentException("only 8 bit and 16 bit samples are supported");
}
if (nChannels == 1)
{
nFormat |= Esd.ESD_MONO;
}
else if (nChannels == 2)
{
nFormat |= Esd.ESD_STEREO;
}
else
{
throw new IllegalArgumentException("only mono and stereo are supported");
}
return nFormat;
}
}
/*** EsdUtils.java ***/