/*
* AlsaUtils.java
*
* This file is part of Tritonus: http://www.tritonus.org/
*/
/*
* Copyright (c) 1999 - 2001 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.alsa;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioSystem;
import org.tritonus.share.sampled.AudioFormats;
import org.tritonus.lowlevel.alsa.AlsaPcm;
public class AlsaUtils
{
private static AudioFormat[] sm_aFormatTable = new AudioFormat[32];
static
{
sm_aFormatTable[AlsaPcm.SND_PCM_FORMAT_S8] = new AudioFormat(
AudioFormat.Encoding.PCM_SIGNED,
AudioSystem.NOT_SPECIFIED,
8,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
true);
sm_aFormatTable[AlsaPcm.SND_PCM_FORMAT_U8] = new AudioFormat(
AudioFormat.Encoding.PCM_UNSIGNED,
AudioSystem.NOT_SPECIFIED,
8,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
true);
sm_aFormatTable[AlsaPcm.SND_PCM_FORMAT_S16_LE] = new AudioFormat(
AudioFormat.Encoding.PCM_SIGNED,
AudioSystem.NOT_SPECIFIED,
16,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
false);
sm_aFormatTable[AlsaPcm.SND_PCM_FORMAT_S16_BE] = new AudioFormat(
AudioFormat.Encoding.PCM_SIGNED,
AudioSystem.NOT_SPECIFIED,
16,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
true);
sm_aFormatTable[AlsaPcm.SND_PCM_FORMAT_U16_LE] = new AudioFormat(
AudioFormat.Encoding.PCM_UNSIGNED,
AudioSystem.NOT_SPECIFIED,
16,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
false);
sm_aFormatTable[AlsaPcm.SND_PCM_FORMAT_U16_BE] = new AudioFormat(
AudioFormat.Encoding.PCM_UNSIGNED,
AudioSystem.NOT_SPECIFIED,
16,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
true);
sm_aFormatTable[AlsaPcm.SND_PCM_FORMAT_S24_LE] = new AudioFormat(
AudioFormat.Encoding.PCM_SIGNED,
AudioSystem.NOT_SPECIFIED,
24,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
false);
sm_aFormatTable[AlsaPcm.SND_PCM_FORMAT_S24_BE] = new AudioFormat(
AudioFormat.Encoding.PCM_SIGNED,
AudioSystem.NOT_SPECIFIED,
24,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
true);
sm_aFormatTable[AlsaPcm.SND_PCM_FORMAT_U24_LE] = new AudioFormat(
AudioFormat.Encoding.PCM_UNSIGNED,
AudioSystem.NOT_SPECIFIED,
24,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
false);
sm_aFormatTable[AlsaPcm.SND_PCM_FORMAT_U24_BE] = new AudioFormat(
AudioFormat.Encoding.PCM_UNSIGNED,
AudioSystem.NOT_SPECIFIED,
24,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
true);
sm_aFormatTable[AlsaPcm.SND_PCM_FORMAT_S32_LE] = new AudioFormat(
AudioFormat.Encoding.PCM_SIGNED,
AudioSystem.NOT_SPECIFIED,
32,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
false);
sm_aFormatTable[AlsaPcm.SND_PCM_FORMAT_S32_BE] = new AudioFormat(
AudioFormat.Encoding.PCM_SIGNED,
AudioSystem.NOT_SPECIFIED,
32,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
true);
sm_aFormatTable[AlsaPcm.SND_PCM_FORMAT_U32_LE] = new AudioFormat(
AudioFormat.Encoding.PCM_UNSIGNED,
AudioSystem.NOT_SPECIFIED,
32,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
false);
sm_aFormatTable[AlsaPcm.SND_PCM_FORMAT_U32_BE] = new AudioFormat(
AudioFormat.Encoding.PCM_UNSIGNED,
AudioSystem.NOT_SPECIFIED,
32,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
true);
sm_aFormatTable[AlsaPcm.SND_PCM_FORMAT_MU_LAW] = new AudioFormat(
AudioFormat.Encoding.ULAW,
AudioSystem.NOT_SPECIFIED,
8,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
true);
sm_aFormatTable[AlsaPcm.SND_PCM_FORMAT_A_LAW] = new AudioFormat(
AudioFormat.Encoding.ALAW,
AudioSystem.NOT_SPECIFIED,
8,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED,
true);
}
public static AudioFormat getAlsaFormat(int nAudioFormat)
{
return sm_aFormatTable[nAudioFormat];
}
public static int getAlsaFormat(AudioFormat audioFormat)
{
for (int nFormat = 0; nFormat < sm_aFormatTable.length; nFormat++)
{
if (sm_aFormatTable[nFormat] != null && AudioFormats.matches(sm_aFormatTable[nFormat], audioFormat))
{
return nFormat;
}
}
return AlsaPcm.SND_PCM_FORMAT_UNKNOWN;
}
}
/*** AlsaUtils.java ***/