在LinuxUbuntu中未检测到Java音频目标线SPDIF

如何解决在LinuxUbuntu中未检测到Java音频目标线SPDIF

我正在开发一个使用Javax.sound库从SPDIF捕获音频的应用程序。该应用程序使用Creative Sound Blaster X-Fi HD声卡。下面的代码片段应该可以帮助您理解

import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Line;
import javax.sound.sampled.Mixer;
import javax.sound.sampled.TargetDataLine;

public class Audio {
    public static void main(String[] args) {
         for (Mixer.Info inf : AudioSystem.getMixerInfo()) {
          System.out.println("found Mixer: " + inf.toString());

          Mixer mixer = AudioSystem.getMixer(inf);
          for (Line.Info lineinf : mixer.getTargetLineInfo()) {
            System.out.println("\tfound Line: " + lineinf.toString());
            if (TargetDataLine.class.isAssignableFrom(lineinf.getLineClass())) {
                System.out.println("\t Found Tapping line "+ lineinf.getClass().toString());
            }
          }
         }
        
    }

}

在Windows上输出类似这样的内容

found Mixer: Primary Sound Driver,version Unknown Version
found Mixer: Speakers (USB Sound Blaster HD),version Unknown Version
found Mixer: Speakers / Headphones (Realtek Audio),version Unknown Version
found Mixer: Digital Audio Interface (USB Sound Blaster HD),version Unknown Version
found Mixer: Headphones (Sagar Bose QC35 II Stereo),version Unknown Version
found Mixer: Headset (Sagar Bose QC35 II Hands-Free),version Unknown Version
found Mixer: Primary Sound Capture Driver,version Unknown Version
    found Line: interface TargetDataLine supporting 8 audio formats,and buffers of at least 32 bytes
     Found Tapping line class com.sun.media.sound.DirectAudioDevice$DirectDLI
found Mixer: Microphone (USB Sound Blaster H,and buffers of at least 32 bytes
     Found Tapping line class com.sun.media.sound.DirectAudioDevice$DirectDLI
found Mixer: Microphone Array (Realtek Audio,and buffers of at least 32 bytes
     Found Tapping line class com.sun.media.sound.DirectAudioDevice$DirectDLI
found Mixer: SPDIF Interface (USB Sound Blas,and buffers of at least 32 bytes
     Found Tapping line class com.sun.media.sound.DirectAudioDevice$DirectDLI
found Mixer: Line (USB Sound Blaster HD),and buffers of at least 32 bytes
     Found Tapping line class com.sun.media.sound.DirectAudioDevice$DirectDLI
found Mixer: Headset (Sagar Bose QC35 II Han,and buffers of at least 32 bytes
     Found Tapping line class com.sun.media.sound.DirectAudioDevice$DirectDLI
found Mixer: Port Speakers (USB Sound Blaster HD),version 1.0
    found Line: SPEAKER target port
found Mixer: Port Speakers / Headphones (Realtek,version 10.0
    found Line: SPEAKER target port
found Mixer: Port Digital Audio Interface (USB So,version 1.0
    found Line: Master Volume target port

表示已找到found Mixer: SPDIF Interface (USB Sound Blas,version Unknown Version 我可以通过上述声卡访问和捕获来自SPDIF的音频。

现在，如果我在Ubuntu 18.04版本上运行相同的代码。我没有任何可以点击的SPDIF接口。当我通过终端运行aplay -l时，得到的波纹管输出无法在代码中点击其中的任何一个。但是，如果我使用Ubuntu的图形用户界面，则会在Sound Panel中看到它。

card 0: PCH [HDA Intel PCH],device 0: ALC3234 Analog [ALC3234 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH],device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH],device 7: HDMI 1 [HDMI 1]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH],device 8: HDMI 2 [HDMI 2]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH],device 9: HDMI 3 [HDMI 3]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH],device 10: HDMI 4 [HDMI 4]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: HD [USB Sound Blaster HD],device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: HD [USB Sound Blaster HD],device 1: USB Audio [USB Audio #1]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: HD [USB Sound Blaster HD],device 2: USB Audio [USB Audio #2]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

是否有解决方案，因为我必须使SPDIF捕获在使用Java的Linux上工作