I am developing this for my site at pscode.org , but have not finished it yet. In any case, it gives a good overview of the sound system as an applet or application.
/* <applet code='MediaTypes' width='800' height='600'> <param name='show' value='Sound|Sampled|Mixers|Primary Sound Driver'> </applet> */ import javax.imageio.ImageIO; import javax.sound.sampled.*; import javax.sound.midi.*; import java.awt.*; import java.util.Arrays; import java.util.ArrayList; import javax.swing.*; import javax.swing.table.DefaultTableModel; import javax.swing.tree.*; import javax.swing.event.*; import javax.swing.text.Position; public class MediaTypes extends JApplet { JTable table; boolean sortable = false; JTree tree; public void init() { Runnable r = new Runnable() { public void run() { MediaTypes mediaTypes = new MediaTypes(); String show = ""; if (getParameter("show")!=null) { show = getParameter("show"); } JPanel p = new JPanel(); mediaTypes.createGui(p, show); add(p); validate(); } }; SwingUtilities.invokeLater(r); } public static void main(String[] args) { Runnable r = new Runnable() { public void run() { MediaTypes mediaTypes = new MediaTypes(); JPanel p = new JPanel(); mediaTypes.createGui(p); JOptionPane.showMessageDialog(null,p); } }; SwingUtilities.invokeLater(r); } public Object[][] mergeArrays(String name1, Object[] data1, String name2, Object[] data2) { Object[][] data = new Object[data1.length+data2.length][2]; for (int ii=0; ii<data1.length; ii++) { data[ii][0] = name1; data[ii][1] = data1[ii]; } int offset = data1.length; for (int ii=offset; ii<data.length; ii++) { data[ii][0] = name2; data[ii][1] = data2[ii-offset]; } return data; } public void createGui(JPanel panel) { createGui(panel, ""); } public String getShortLineName(String name) { String[] lineTypes = { "Clip", "SourceDataLine", "TargetDataLine", "Speaker", "Microphone", "Master Volume", "Line In" }; for (String shortName : lineTypes) { if ( name.toLowerCase().replaceAll("_", " ").contains(shortName.toLowerCase() )) { return shortName; } } return name; } public void createGui(JPanel panel, String path) { //DefaultMutableTreeNode selected = null; panel.setLayout( new BorderLayout(5,5) ); final JLabel output = new JLabel("Select a tree leaf to see the details."); panel.add(output, BorderLayout.SOUTH); table = new JTable(); try { table.setAutoCreateRowSorter(true); sortable = true; } catch (Throwable ignore) { // 1.6+ functionality - not vital } JScrollPane tableScroll = new JScrollPane(table); Dimension d = tableScroll.getPreferredSize(); d = new Dimension(450,d.height); tableScroll.setPreferredSize(d); panel.add( tableScroll, BorderLayout.CENTER ); DefaultMutableTreeNode rootNode = new DefaultMutableTreeNode("Media"); DefaultTreeModel treeModel = new DefaultTreeModel(rootNode); DefaultMutableTreeNode imageNode = new DefaultMutableTreeNode("Image"); rootNode.add(imageNode); Object[][] data; int offset; String[] columnNames; data = mergeArrays( "Reader", ImageIO.getReaderFileSuffixes(), "Writer", ImageIO.getWriterFileSuffixes() ); columnNames = new String[]{"Input/Output", "Image File Suffixes"}; MediaData md = new MediaData( "Suffixes", columnNames, data); imageNode.add(new DefaultMutableTreeNode(md)); data = mergeArrays( "Reader", ImageIO.getReaderMIMETypes(), "Writer", ImageIO.getWriterMIMETypes() ); columnNames = new String[]{"Input/Output", "Image MIME Types"}; md = new MediaData( "MIME", columnNames, data); imageNode.add(new DefaultMutableTreeNode(md)); DefaultMutableTreeNode soundNode = new DefaultMutableTreeNode("Sound"); rootNode.add(soundNode); DefaultMutableTreeNode soundSampledNode = new DefaultMutableTreeNode("Sampled"); soundNode.add(soundSampledNode); md = new MediaData("Suffixes", "Sound File Suffixes", AudioSystem.getAudioFileTypes()); soundSampledNode.add(new DefaultMutableTreeNode(md)); Mixer.Info[] mixerInfo = AudioSystem.getMixerInfo(); String[][] mixerData = new String[mixerInfo.length][4]; for (int ii=0; ii<mixerData.length; ii++) { mixerData[ii][0] = mixerInfo[ii].getName(); mixerData[ii][1] = mixerInfo[ii].getVendor(); mixerData[ii][2] = mixerInfo[ii].getVersion(); mixerData[ii][3] = mixerInfo[ii].getDescription(); } columnNames = new String[]{"Name", "Vendor", "Version", "Description"}; md = new MediaData("Mixers", columnNames, mixerData); DefaultMutableTreeNode soundSampledMixersNode = new DefaultMutableTreeNode(md); soundSampledNode.add(soundSampledMixersNode); for (int ii=0; ii<mixerInfo.length; ii++) { Mixer mixer = AudioSystem.getMixer(mixerInfo[ii]); data = mergeArrays( "Source", mixer.getSourceLineInfo(), "Target", mixer.getTargetLineInfo() ); columnNames = new String[]{ "Input/Output", "Line Info" }; md = new MediaData(mixerInfo[ii].getName(), columnNames, data); DefaultMutableTreeNode soundSampledMixerNode = new DefaultMutableTreeNode(md); soundSampledMixersNode.add( soundSampledMixerNode ); //Mixer mixer = AudioSystem.getMixer(mixerInfo[ii]); Line.Info[] source = mixer.getSourceLineInfo(); Line.Info[] target = mixer.getTargetLineInfo(); Line[] all = new Line[source.length + target.length]; try { for (int jj=0; jj<source.length; jj++) { all[jj] = AudioSystem.getLine(source[jj]); } for (int jj=source.length; jj<all.length; jj++) { all[jj] = AudioSystem.getLine(target[jj-source.length]); } columnNames = new String[]{"Attribute", "Value"}; for (Line line : all) { Control[] controls = line.getControls(); if (line instanceof DataLine) { DataLine dataLine = (DataLine)line; AudioFormat audioFormat = dataLine.getFormat(); data = new Object[7+controls.length][2]; data[0][0] = "Channels"; data[0][1] = new Integer(audioFormat.getChannels()); data[1][0] = "Encoding"; data[1][1] = audioFormat.getEncoding(); data[2][0] = "Frame Rate"; data[2][1] = new Float(audioFormat.getFrameRate()); data[3][0] = "Sample Rate"; data[3][1] = new Float(audioFormat.getSampleRate()); data[4][0] = "Sample Size (bits)"; data[4][1] = new Integer(audioFormat.getSampleSizeInBits()); data[5][0] = "Big Endian"; data[5][1] = new Boolean(audioFormat.isBigEndian()); data[6][0] = "Level"; data[6][1] = new Float(dataLine.getLevel()); } else if (line instanceof Port) { Port port = (Port)line; Port.Info portInfo = (Port.Info)port.getLineInfo(); data = new Object[2+controls.length][2]; data[0][0] = "Name"; data[0][1] = portInfo.getName(); data[1][0] = "Source"; data[1][1] = new Boolean(portInfo.isSource()); } else { System.out.println( "?? " + line ); } int start = data.length-controls.length; for (int kk=start; kk<data.length; kk++) { data[kk][0] = "Control"; int index = kk-start; data[kk][1] = controls[index]; } md = new MediaData(getShortLineName(line.getLineInfo().toString()), columnNames, data); soundSampledMixerNode.add(new DefaultMutableTreeNode(md)); } } catch(Exception e) { e.printStackTrace(); } } int[] midiTypes = MidiSystem.getMidiFileTypes(); data = new Object[midiTypes.length][2]; for (int ii=0; ii<midiTypes.length; ii++) { data[ii][0] = new Integer(midiTypes[ii]); String description = "Unknown"; switch (midiTypes[ii]) { case 0: description = "Single Track"; break; case 1: description = "Multi Track"; break; case 2: description = "Multi Song"; } data[ii][1] = description; } columnNames = new String[]{"Type", "Description"}; md = new MediaData("MIDI", columnNames, data); DefaultMutableTreeNode soundMIDINode = new DefaultMutableTreeNode(md); soundNode.add(soundMIDINode); columnNames = new String[]{ "Attribute", "Value"}; MidiDevice.Info[] midiDeviceInfo = MidiSystem.getMidiDeviceInfo() ; for (int ii=0; ii<midiDeviceInfo.length; ii++) { data = new Object[6][2]; data[0][0] = "Name"; data[0][1] = midiDeviceInfo[ii].getName(); data[1][0] = "Vendor"; data[1][1] = midiDeviceInfo[ii].getVendor(); data[2][0] = "Version"; String version = midiDeviceInfo[ii].getVersion(); data[2][1] = version.replaceAll("Version ", ""); data[3][0] = "Description"; data[3][1] = midiDeviceInfo[ii].getDescription(); data[4][0] = "Maximum Transmitters"; data[5][0] = "Maximum Receivers"; try { MidiDevice midiDevice = MidiSystem.getMidiDevice(midiDeviceInfo[ii]); Object valueTransmitter; if (midiDevice.getMaxTransmitters()==AudioSystem.NOT_SPECIFIED) { valueTransmitter = "Not specified"; } else { valueTransmitter = new Integer(midiDevice.getMaxTransmitters()); } Object valueReceiver; if (midiDevice.getMaxReceivers()==AudioSystem.NOT_SPECIFIED) { valueReceiver = "Not specified"; } else { valueReceiver = new Integer(midiDevice.getMaxReceivers()); } data[4][1] = valueTransmitter; data[5][1] = valueReceiver; } catch(MidiUnavailableException mue) { data[4][1] = "Unknown"; data[5][1] = "Unknown"; } md = new MediaData(midiDeviceInfo[ii].getName(), columnNames, data); soundMIDINode.add( new DefaultMutableTreeNode(md) ); } tree = new JTree(treeModel); tree.setRootVisible(false); tree.getSelectionModel().setSelectionMode (TreeSelectionModel.SINGLE_TREE_SELECTION); tree.addTreeSelectionListener( new TreeSelectionListener() { public void valueChanged(TreeSelectionEvent tse) { if (sortable) { output.setText("Click table column headers to sort."); } DefaultMutableTreeNode node = (DefaultMutableTreeNode) tree.getLastSelectedPathComponent(); if (node == null) return; Object nodeInfo = node.getUserObject(); if (nodeInfo instanceof MediaData) { MediaData mediaData = (MediaData)nodeInfo; table.setModel( new DefaultTableModel( mediaData.getData(), mediaData.getColumnNames()) ); } } } ); for (int ii=0; ii<tree.getRowCount(); ii++) { tree.expandRow(ii); } String[] paths = path.split("\\|"); int row = 0; TreePath treePath = null; for (String prefix : paths) { treePath = tree.getNextMatch( prefix, row, Position.Bias.Forward ); row = tree.getRowForPath(treePath); } panel.add(new JScrollPane(tree),BorderLayout.WEST); tree.setSelectionPath(treePath); tree.scrollRowToVisible(row); } } class MediaData { String name; String[] columnNames; Object[][] data; MediaData(String name, String columnName, Object[] data) { this.name = name; columnNames = new String[1]; columnNames[0] = columnName; this.data = new Object[data.length][1]; for (int ii=0; ii<data.length; ii++) { this.data[ii][0] = data[ii]; } } MediaData(String name, String[] columnNames, Object[][] data) { this.name = name; this.columnNames = columnNames; this.data = data; } public String toString() { return name; } public String[] getColumnNames() { return columnNames; } public Object[][] getData() { return data; } }
Screenshot
