列出Applet中的输入和输出音频设备

发布于 2024-12-13 07:08:58 字数 3158 浏览 2 评论 0原文

我正在运行一个签名的小程序，它需要为用户提供选择输入和输出音频设备的能力（类似于 Skype 提供的功能）。

我从其他线程：

import javax.sound.sampled.*;
public class SoundAudit {
  public static void main(String[] args) { try {
    System.out.println("OS: "+System.getProperty("os.name")+" "+
      System.getProperty("os.version")+"/"+
      System.getProperty("os.arch")+"\nJava: "+
      System.getProperty("java.version")+" ("+
      System.getProperty("java.vendor")+")\n");
      for (Mixer.Info thisMixerInfo : AudioSystem.getMixerInfo()) {
        System.out.println("Mixer: "+thisMixerInfo.getDescription()+
          " ["+thisMixerInfo.getName()+"]");
        Mixer thisMixer = AudioSystem.getMixer(thisMixerInfo);
        for (Line.Info thisLineInfo:thisMixer.getSourceLineInfo()) {
            if (thisLineInfo.getLineClass().getName().equals(
              "javax.sound.sampled.Port")) {
              Line thisLine = thisMixer.getLine(thisLineInfo);
              thisLine.open();
              System.out.println("  Source Port: "
                +thisLineInfo.toString());
              for (Control thisControl : thisLine.getControls()) {
                System.out.println(AnalyzeControl(thisControl));}
              thisLine.close();}}
        for (Line.Info thisLineInfo:thisMixer.getTargetLineInfo()) {
          if (thisLineInfo.getLineClass().getName().equals(
            "javax.sound.sampled.Port")) {
            Line thisLine = thisMixer.getLine(thisLineInfo);
            thisLine.open();
            System.out.println("  Target Port: "
              +thisLineInfo.toString());
            for (Control thisControl : thisLine.getControls()) {
              System.out.println(AnalyzeControl(thisControl));}
            thisLine.close();}}}
  } catch (Exception e) {e.printStackTrace();}}
  public static String AnalyzeControl(Control thisControl) {
    String type = thisControl.getType().toString();
    if (thisControl instanceof BooleanControl) {
      return "    Control: "+type+" (boolean)"; }
    if (thisControl instanceof CompoundControl) {
      System.out.println("    Control: "+type+
        " (compound - values below)");
      String toReturn = "";
      for (Control children:
        ((CompoundControl)thisControl).getMemberControls()) {
        toReturn+="  "+AnalyzeControl(children)+"\n";}
      return toReturn.substring(0, toReturn.length()-1);}
    if (thisControl instanceof EnumControl) {
      return "    Control:"+type+" (enum: "+thisControl.toString()+")";}
    if (thisControl instanceof FloatControl) {
      return "    Control: "+type+" (float: from "+
        ((FloatControl) thisControl).getMinimum()+" to "+
        ((FloatControl) thisControl).getMaximum()+")";}
    return "    Control: unknown type";}
}

但我得到的是：

Mixer: Software mixer and synthesizer [Java Sound Audio Engine]
Mixer: No details available [Microphone (Pink Front)]

我期待得到我的设备的真实列表（我的首选项面板显示 3 个输出设备和 1 个麦克风）。我正在 Mac OS X 10.6.7 上运行。

还有其他方法可以从 Java 获取该信息吗？

原文

I am running a signed applet that needs to provide the ability for the user to select the input and output audio devices ( similar to what skype provides).

I borrowed the following code from other thread:

import javax.sound.sampled.*;
public class SoundAudit {
  public static void main(String[] args) { try {
    System.out.println("OS: "+System.getProperty("os.name")+" "+
      System.getProperty("os.version")+"/"+
      System.getProperty("os.arch")+"\nJava: "+
      System.getProperty("java.version")+" ("+
      System.getProperty("java.vendor")+")\n");
      for (Mixer.Info thisMixerInfo : AudioSystem.getMixerInfo()) {
        System.out.println("Mixer: "+thisMixerInfo.getDescription()+
          " ["+thisMixerInfo.getName()+"]");
        Mixer thisMixer = AudioSystem.getMixer(thisMixerInfo);
        for (Line.Info thisLineInfo:thisMixer.getSourceLineInfo()) {
            if (thisLineInfo.getLineClass().getName().equals(
              "javax.sound.sampled.Port")) {
              Line thisLine = thisMixer.getLine(thisLineInfo);
              thisLine.open();
              System.out.println("  Source Port: "
                +thisLineInfo.toString());
              for (Control thisControl : thisLine.getControls()) {
                System.out.println(AnalyzeControl(thisControl));}
              thisLine.close();}}
        for (Line.Info thisLineInfo:thisMixer.getTargetLineInfo()) {
          if (thisLineInfo.getLineClass().getName().equals(
            "javax.sound.sampled.Port")) {
            Line thisLine = thisMixer.getLine(thisLineInfo);
            thisLine.open();
            System.out.println("  Target Port: "
              +thisLineInfo.toString());
            for (Control thisControl : thisLine.getControls()) {
              System.out.println(AnalyzeControl(thisControl));}
            thisLine.close();}}}
  } catch (Exception e) {e.printStackTrace();}}
  public static String AnalyzeControl(Control thisControl) {
    String type = thisControl.getType().toString();
    if (thisControl instanceof BooleanControl) {
      return "    Control: "+type+" (boolean)"; }
    if (thisControl instanceof CompoundControl) {
      System.out.println("    Control: "+type+
        " (compound - values below)");
      String toReturn = "";
      for (Control children:
        ((CompoundControl)thisControl).getMemberControls()) {
        toReturn+="  "+AnalyzeControl(children)+"\n";}
      return toReturn.substring(0, toReturn.length()-1);}
    if (thisControl instanceof EnumControl) {
      return "    Control:"+type+" (enum: "+thisControl.toString()+")";}
    if (thisControl instanceof FloatControl) {
      return "    Control: "+type+" (float: from "+
        ((FloatControl) thisControl).getMinimum()+" to "+
        ((FloatControl) thisControl).getMaximum()+")";}
    return "    Control: unknown type";}
}

But what I get:

Mixer: Software mixer and synthesizer [Java Sound Audio Engine]
Mixer: No details available [Microphone (Pink Front)]

I was expecting the get the real list of my devices (My preferences panels shows 3 output devices and 1 Microphone). I am running on Mac OS X 10.6.7.

Is there other way to get that info from Java?

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爱她像谁 2024-12-20 07:08:58

多年来，OS X 的 Java 实现一直是一个非常不幸的限制，顺便说一句，该平台特有的“Java Sound Audio Engine”是唯一以编程方式可用的输出音频线。因此，无论您发送到此行的是什么，即从您创建的任何 java 应用程序发送的内容，都将始终被路由到 OS X 中设置为默认输出的内容，通常是内部扬声器。所以 JSAE 只是“默认音频输出”的 Java 术语。据我们了解 - 可悲的是 - 最新版本仍然是这种情况。

为什么不幸？因为它甚至可以有效地禁用不起眼的音频路由。我们每天都在处理这些问题，这需要增加各种复杂性。有一些解决方法，但需要通过 SoundFlower 和 HiJack Pro 等第三方应用程序。例如 www.soundPimp.com。

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桃扇骨 2024-12-20 07:08:58

也许你可以修改并使用它。以下代码用于在我的两个小程序上选择音频输出设备。我只对输出线感兴趣，而不是端口或输入线。第一部分列出了菜单栏下拉列表中选项组中的选项。第二部分根据所选选项设置混合器变量。

private void createMenuBars(){
    JMenuBar menuBar = new JMenuBar();
    menuBar.setBounds(0, 0, 60, 20);

    JMenu optionMenu = new JMenu("Options");
    JMenuItem pickMixers = new JMenuItem("Select a Playback Path");
    optionMenu.add(pickMixers);
    optionMenu.addSeparator();

    ButtonGroup mixerSelections = new ButtonGroup();

    addMixerOption("default sound system", mixerSelections, optionMenu, true);

    AudioFormat audioFmt = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED, 
        44100, 16, 2, 4, 44100, false);
    Mixer.Info[] mixers = AudioSystem.getMixerInfo();
    for (Mixer.Info info : mixers) 
    {
        Mixer mixer = AudioSystem.getMixer(info);

        try
        {
//          System.out.println(info);
            Info sdlLineInfo = new DataLine.Info(SourceDataLine.class, audioFmt);

            // test if line is assignable
            @SuppressWarnings("unused")
            SourceDataLine sdl = (SourceDataLine) mixer.getLine(sdlLineInfo);

            // if successful, add to list
            addMixerOption(info.getName() + " <> " + info.getDescription(),
                mixerSelections, optionMenu, false);
        }
        catch (LineUnavailableException e) 
        {
            //e.printStackTrace();
            System.out.println("Mixer rejected, Line Unavailable: " + info);
        }
        catch (IllegalArgumentException e)
        {
            //e.printStackTrace();
            System.out.println("Mixer rejected, Illegal Argument: " + info);
        }           
    }

    menuBar.add(optionMenu);
    add(menuBar,0);
}

private void addMixerOption(String optionName, ButtonGroup bg, 
    JMenu menu, boolean isSelected
{
    JRadioButtonMenuItem newOption = new JRadioButtonMenuItem(optionName);
    bg.add(newOption);
    newOption.setSelected(isSelected);
    menu.add(newOption);
    newOption.addActionListener(new OptionListener());
    newOption.setActionCommand(optionName); 
}

这是选择选项时设置混合器变量的情况。

public class OptionListener implements ActionListener 
{
    @Override
    public void actionPerformed(ActionEvent arg0) 
    {
        String optionName = arg0.getActionCommand();
        Boolean defaultMixer = true;

        Mixer.Info[] mixers = AudioSystem.getMixerInfo();
        for (Mixer.Info info : mixers)
        {
            if (optionName.equals(info.getName()+" <> "+info.getDescription()))
            {
                System.out.println("Option selected >  " + info.getName());
                System.out.println("    description >  " + info.getDescription());
                System.out.println("          class >  " + info.getClass());

                appMixer = AudioSystem.getMixer(info);
                System.out.println(appMixer);
                defaultMixer = false;
            }
        }
        if (defaultMixer) 
        {
            System.out.println("Using default mixer, whatever that is...");
            appMixer = null;
        }
    }
}

控制台消息过多。
我在 http://hexara.com/VSL/JTheremin.htm 中使用它

Maybe you can modify and use this. The following code is used to select audio output devices on two of my Applets. I was only interested in output lines, not ports or input lines. The first part lists the options in an option group in a Menubar dropdown. The second part sets a mixer variable based upon the selected option.

private void createMenuBars(){
    JMenuBar menuBar = new JMenuBar();
    menuBar.setBounds(0, 0, 60, 20);

    JMenu optionMenu = new JMenu("Options");
    JMenuItem pickMixers = new JMenuItem("Select a Playback Path");
    optionMenu.add(pickMixers);
    optionMenu.addSeparator();

    ButtonGroup mixerSelections = new ButtonGroup();

    addMixerOption("default sound system", mixerSelections, optionMenu, true);

    AudioFormat audioFmt = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED, 
        44100, 16, 2, 4, 44100, false);
    Mixer.Info[] mixers = AudioSystem.getMixerInfo();
    for (Mixer.Info info : mixers) 
    {
        Mixer mixer = AudioSystem.getMixer(info);

        try
        {
//          System.out.println(info);
            Info sdlLineInfo = new DataLine.Info(SourceDataLine.class, audioFmt);

            // test if line is assignable
            @SuppressWarnings("unused")
            SourceDataLine sdl = (SourceDataLine) mixer.getLine(sdlLineInfo);

            // if successful, add to list
            addMixerOption(info.getName() + " <> " + info.getDescription(),
                mixerSelections, optionMenu, false);
        }
        catch (LineUnavailableException e) 
        {
            //e.printStackTrace();
            System.out.println("Mixer rejected, Line Unavailable: " + info);
        }
        catch (IllegalArgumentException e)
        {
            //e.printStackTrace();
            System.out.println("Mixer rejected, Illegal Argument: " + info);
        }           
    }

    menuBar.add(optionMenu);
    add(menuBar,0);
}

private void addMixerOption(String optionName, ButtonGroup bg, 
    JMenu menu, boolean isSelected
{
    JRadioButtonMenuItem newOption = new JRadioButtonMenuItem(optionName);
    bg.add(newOption);
    newOption.setSelected(isSelected);
    menu.add(newOption);
    newOption.addActionListener(new OptionListener());
    newOption.setActionCommand(optionName); 
}

Here is were the mixer variable gets set when an option is selected.

public class OptionListener implements ActionListener 
{
    @Override
    public void actionPerformed(ActionEvent arg0) 
    {
        String optionName = arg0.getActionCommand();
        Boolean defaultMixer = true;

        Mixer.Info[] mixers = AudioSystem.getMixerInfo();
        for (Mixer.Info info : mixers)
        {
            if (optionName.equals(info.getName()+" <> "+info.getDescription()))
            {
                System.out.println("Option selected >  " + info.getName());
                System.out.println("    description >  " + info.getDescription());
                System.out.println("          class >  " + info.getClass());

                appMixer = AudioSystem.getMixer(info);
                System.out.println(appMixer);
                defaultMixer = false;
            }
        }
        if (defaultMixer) 
        {
            System.out.println("Using default mixer, whatever that is...");
            appMixer = null;
        }
    }
}

There's an overabundance of console messages.
I use this in http://hexara.com/VSL/JTheremin.htm

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寄居者 2024-12-20 07:08:58

这可能是因为 JVM 不支持在 OS X 上检索此信息，或者您的设备可能不受支持。我会做两件事：

尝试使用不同的 JVM
尝试不同的操作系统

我在 Linux 上运行代码并且我正确地获得了所有详细信息：

OS: Linux 2.6.38-12-generic/amd64
Java: 1.6.0_22 (Sun Microsystems Inc.)

Mixer: the ear-candy mixer [PulseAudio Mixer]
Mixer: Direct Audio Device: default, default, default [default [default]]
Mixer: Direct Audio Device: HDA Intel, ALC662 rev1 Analog, ALC662 rev1 Analog [Intel [plughw:0,0]]
Mixer: Direct Audio Device: Plantronics Headset, USB Audio, USB Audio [Headset [plughw:1,0]]
Mixer: Direct Audio Device: USB Device 0x46d:0x8b2, USB Audio, USB Audio [U0x46d0x8b2 [plughw:2,0]]
Mixer: HDA Intel, Realtek ALC662 rev1 [Port Intel [hw:0]]
  Source Port: Mic Boost source port
    Control: Mic Boost (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Balance (float: from -1.0 to 1.0)
  Source Port: Capture source port
    Control: Capture (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Balance (float: from -1.0 to 1.0)
      Control: Select (boolean)
  Source Port: Capture source port
    Control: Capture (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Balance (float: from -1.0 to 1.0)
      Control: Select (boolean)
  Target Port: Master target port
    Control: Master (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Mute (boolean)
  Target Port: Headphone target port
    Control: Headphone (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Balance (float: from -1.0 to 1.0)
      Control: Mute (boolean)
  Target Port: Speaker target port
    Control: Speaker (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Balance (float: from -1.0 to 1.0)
      Control: Mute (boolean)
  Target Port: PCM target port
    Control: PCM (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Balance (float: from -1.0 to 1.0)
      Control: Mute (boolean)
  Target Port: Line target port
    Control: Line (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Balance (float: from -1.0 to 1.0)
      Control: Mute (boolean)
  Target Port: Mic target port
    Control: Mic (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Balance (float: from -1.0 to 1.0)
      Control: Mute (boolean)
  Target Port: Mic Boost target port
    Control: Mic Boost (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Balance (float: from -1.0 to 1.0)
Mixer: Plantronics Headset, USB Mixer [Port Headset [hw:1]]
  Source Port: Bass source port
    Control: Bass (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
  Source Port: Treble source port
    Control: Treble (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
  Source Port: Mic source port
    Control: Mic (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Select (boolean)
  Target Port: Bass target port
    Control: Bass (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
  Target Port: Treble target port
    Control: Treble (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
  Target Port: PCM target port
    Control: PCM (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Balance (float: from -1.0 to 1.0)
      Control: Mute (boolean)
Mixer: USB Device 0x46d:0x8b2, USB Mixer [Port U0x46d0x8b2 [hw:2]]
  Source Port: Mic source port
    Control: Mic (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Select (boolean)

This might be either that the JVM does not support retrieving this information on OS X or your devices might not be supported. I would do two things:

try with different JVM
try on different OS

I run the code on linux and I got all the details correctly :

OS: Linux 2.6.38-12-generic/amd64
Java: 1.6.0_22 (Sun Microsystems Inc.)

Mixer: the ear-candy mixer [PulseAudio Mixer]
Mixer: Direct Audio Device: default, default, default [default [default]]
Mixer: Direct Audio Device: HDA Intel, ALC662 rev1 Analog, ALC662 rev1 Analog [Intel [plughw:0,0]]
Mixer: Direct Audio Device: Plantronics Headset, USB Audio, USB Audio [Headset [plughw:1,0]]
Mixer: Direct Audio Device: USB Device 0x46d:0x8b2, USB Audio, USB Audio [U0x46d0x8b2 [plughw:2,0]]
Mixer: HDA Intel, Realtek ALC662 rev1 [Port Intel [hw:0]]
  Source Port: Mic Boost source port
    Control: Mic Boost (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Balance (float: from -1.0 to 1.0)
  Source Port: Capture source port
    Control: Capture (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Balance (float: from -1.0 to 1.0)
      Control: Select (boolean)
  Source Port: Capture source port
    Control: Capture (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Balance (float: from -1.0 to 1.0)
      Control: Select (boolean)
  Target Port: Master target port
    Control: Master (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Mute (boolean)
  Target Port: Headphone target port
    Control: Headphone (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Balance (float: from -1.0 to 1.0)
      Control: Mute (boolean)
  Target Port: Speaker target port
    Control: Speaker (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Balance (float: from -1.0 to 1.0)
      Control: Mute (boolean)
  Target Port: PCM target port
    Control: PCM (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Balance (float: from -1.0 to 1.0)
      Control: Mute (boolean)
  Target Port: Line target port
    Control: Line (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Balance (float: from -1.0 to 1.0)
      Control: Mute (boolean)
  Target Port: Mic target port
    Control: Mic (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Balance (float: from -1.0 to 1.0)
      Control: Mute (boolean)
  Target Port: Mic Boost target port
    Control: Mic Boost (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Balance (float: from -1.0 to 1.0)
Mixer: Plantronics Headset, USB Mixer [Port Headset [hw:1]]
  Source Port: Bass source port
    Control: Bass (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
  Source Port: Treble source port
    Control: Treble (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
  Source Port: Mic source port
    Control: Mic (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Select (boolean)
  Target Port: Bass target port
    Control: Bass (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
  Target Port: Treble target port
    Control: Treble (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
  Target Port: PCM target port
    Control: PCM (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Balance (float: from -1.0 to 1.0)
      Control: Mute (boolean)
Mixer: USB Device 0x46d:0x8b2, USB Mixer [Port U0x46d0x8b2 [hw:2]]
  Source Port: Mic source port
    Control: Mic (compound - values below)
      Control: Volume (float: from 0.0 to 1.0)
      Control: Select (boolean)

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