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/*
* AlsaMixerTest.java
*/
import org.tritonus.lowlevel.alsa.AlsaMixer;
import org.tritonus.lowlevel.alsa.AlsaMixerElement;
public class AlsaMixerTest
{
private static boolean sm_bShowInactiveElements;
public static void main(String[] args)
throws Exception
{
String strMixerName = "hw:0";
if (args.length > 0)
{
strMixerName = args[0];
}
out("Mixer: " + strMixerName);
AlsaMixer mixer = new AlsaMixer(strMixerName);
int[] anIndices = new int[200];
String[] astrNames = new String[200];
int nReturn = mixer.readControlList(anIndices, astrNames);
out("readControlList() returns: " + nReturn);
if (nReturn > 0)
{
out("Mixer controls:");
for (int i = 0; i < nReturn; i++)
{
out("" + i + " " + anIndices[i] + " " + astrNames[i]);
AlsaMixerElement element = new AlsaMixerElement(mixer, anIndices[i], astrNames[i]);
if (element.isActive() || sm_bShowInactiveElements)
{
out("--------------------------------------------------------------------------------");
output(element);
}
}
out("--------------------------------------------------------------------------------");
}
mixer.close();
}
private static void output(AlsaMixerElement element)
{
out(" name: " + element.getName());
out(" index: " + element.getName());
out(" active: " + element.isActive());
if (hasPlaybackChannels(element))
{
outputPlayback(element);
}
else
{
out("* no playback channels");
}
if (hasCaptureChannels(element))
{
outputCapture(element);
}
else
{
out("* no capture channels");
}
}
private static void outputPlayback(AlsaMixerElement element)
{
out(" playback mono: " + element.isPlaybackMono());
for (int nChannel = AlsaMixerElement.SND_MIXER_SCHN_FRONT_LEFT;
nChannel <= AlsaMixerElement.SND_MIXER_SCHN_WOOFER;
nChannel++)
{
out(" playback channel (" + AlsaMixerElement.getChannelName(nChannel) + "): " + element.hasPlaybackChannel(nChannel));
}
out(" common volume: " + element.hasCommonVolume());
out(" playback volume: " + element.hasPlaybackVolume());
out(" playback volume joined: " + element.hasPlaybackVolumeJoined());
out(" common switch: " + element.hasCommonSwitch());
out(" playback switch: " + element.hasPlaybackSwitch());
out(" playback switch joined: " + element.hasPlaybackSwitchJoined());
}
private static void outputCapture(AlsaMixerElement element)
{
out(" capture mono: " + element.isCaptureMono());
for (int nChannel = AlsaMixerElement.SND_MIXER_SCHN_FRONT_LEFT;
nChannel <= AlsaMixerElement.SND_MIXER_SCHN_WOOFER;
nChannel++)
{
out(" capture channel (" + AlsaMixerElement.getChannelName(nChannel) + "): " + element.hasCaptureChannel(nChannel));
}
out(" common volume: " + element.hasCommonVolume());
out(" capture volume: " + element.hasCaptureVolume());
out(" capture volume joined: " + element.hasCaptureVolumeJoined());
out(" common switch: " + element.hasCommonSwitch());
out(" capture switch: " + element.hasCaptureSwitch());
out(" capture switch joined: " + element.hasCaptureSwitchJoinded());
out(" capture switch exclusive: " + element.hasCaptureSwitchExclusive());
if (element.hasCaptureSwitchExclusive())
{
out(" capture group: " + element.getCaptureGroup());
}
}
private static boolean hasPlaybackChannels(AlsaMixerElement element)
{
boolean bHasChannels = false;
for (int nChannel = AlsaMixerElement.SND_MIXER_SCHN_FRONT_LEFT;
nChannel <= AlsaMixerElement.SND_MIXER_SCHN_WOOFER;
nChannel++)
{
bHasChannels |= element.hasPlaybackChannel(nChannel);
}
return bHasChannels;
}
private static boolean hasCaptureChannels(AlsaMixerElement element)
{
boolean bHasChannels = false;
for (int nChannel = AlsaMixerElement.SND_MIXER_SCHN_FRONT_LEFT;
nChannel <= AlsaMixerElement.SND_MIXER_SCHN_WOOFER;
nChannel++)
{
bHasChannels |= element.hasCaptureChannel(nChannel);
}
return bHasChannels;
}
private static void out(String strMessage)
{
System.out.println(strMessage);
}
}
/*** AlsaMixerTest.java ***/
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