我以为我可以在这个很棒的网站上找到任何东西，但现在我似乎遇到了没有答案的问题:) 请帮忙！
问题是，我需要播放多达 6 个不同的 wav 文件，每个文件有 1 个通道，系统混音器支持 6 个通道（左、右、左环绕等）。
使用 6 个不同的 SourceDataLines 看起来很合乎逻辑，但据我所见，Mixer 无法为它们进行每个样本同步，所以我想出了将它们交错在单独的线程中并只使用一个 SourceDataLine 来播放它。它适用于左右两个通道，但对于更多通道，我需要知道精确的通道布局（可能在差异系统和声卡上有所不同）。我认为系统混音器之一（我有两个：“线性输入”和“java 声音系统混音器”）可能有这个元数据，但我找不到它。
有人知道如何获取此信息吗？
谢谢。
我和我的朋友刚刚发现 java7 音响系统支持 6 个通道以及它们使用不同位的所有变体等。
这是列出您的java可以做什么的代码：
Mixer.Info[] mi = AudioSystem.getMixerInfo();
for (Mixer.Info info : mi) {
System.out.println("info: " + info);
Mixer m = AudioSystem.getMixer(info);
System.out.println("mixer " + m);
Line.Info[] sl = m.getSourceLineInfo();
for (Line.Info info2 : sl) {
System.out.println(" info: " + info2);
Line line = AudioSystem.getLine(info2);
if (line instanceof SourceDataLine) {
SourceDataLine source = (SourceDataLine) line;
DataLine.Info i = (DataLine.Info) source.getLineInfo();
for (AudioFormat format : i.getFormats()) {
System.out.println(" format: " + format);
}
}
}
}
这是我的 macbook pro 的输出，带有 USB 连接的外部声卡：
info: Default Audio Device, version Unknown Version
mixer com.sun.media.sound.DirectAudioDevice@67310bf
info: interface SourceDataLine supporting 14 audio formats, and buffers of at least 32 bytes
format: PCM_UNSIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame,
format: PCM_SIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame,
format: PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, little-endian
format: PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, big-endian
format: PCM_SIGNED unknown sample rate, 24 bit, mono, 3 bytes/frame, little-endian
format: PCM_SIGNED unknown sample rate, 24 bit, mono, 3 bytes/frame, big-endian
format: PCM_UNSIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame,
format: PCM_SIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame,
format: PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, little-endian
format: PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, big-endian
format: PCM_SIGNED unknown sample rate, 24 bit, stereo, 6 bytes/frame, little-endian
format: PCM_SIGNED unknown sample rate, 24 bit, stereo, 6 bytes/frame, big-endian
format: PCM_SIGNED 48000.0 Hz, 16 bit, stereo, 4 bytes/frame, little-endian
format: PCM_SIGNED 48000.0 Hz, 16 bit, stereo, 4 bytes/frame, big-endian
info: interface Clip supporting 14 audio formats, and buffers of at least 32 bytes
info: Built-in Input, version Unknown Version
mixer com.sun.media.sound.DirectAudioDevice@2edf98c4
info: Built-in Output, version Unknown Version
mixer com.sun.media.sound.DirectAudioDevice@59a683e6
info: interface SourceDataLine supporting 14 audio formats, and buffers of at least 32 bytes
format: PCM_UNSIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame,
format: PCM_SIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame,
format: PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, little-endian
format: PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, big-endian
format: PCM_SIGNED unknown sample rate, 24 bit, mono, 3 bytes/frame, little-endian
format: PCM_SIGNED unknown sample rate, 24 bit, mono, 3 bytes/frame, big-endian
format: PCM_UNSIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame,
format: PCM_SIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame,
format: PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, little-endian
format: PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, big-endian
format: PCM_SIGNED unknown sample rate, 24 bit, stereo, 6 bytes/frame, little-endian
format: PCM_SIGNED unknown sample rate, 24 bit, stereo, 6 bytes/frame, big-endian
format: PCM_SIGNED 48000.0 Hz, 16 bit, stereo, 4 bytes/frame, little-endian
format: PCM_SIGNED 48000.0 Hz, 16 bit, stereo, 4 bytes/frame, big-endian
info: interface Clip supporting 14 audio formats, and buffers of at least 32 bytes
info: SB X-Fi Surround 5.1 Pro, version Unknown Version
mixer com.sun.media.sound.DirectAudioDevice@431d9f05
info: interface SourceDataLine supporting 20 audio formats, and buffers of at least 32 bytes
format: PCM_UNSIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame,
format: PCM_SIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame,
format: PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, little-endian
format: PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, big-endian
format: PCM_SIGNED unknown sample rate, 24 bit, mono, 3 bytes/frame, little-endian
format: PCM_SIGNED unknown sample rate, 24 bit, mono, 3 bytes/frame, big-endian
format: PCM_UNSIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame,
format: PCM_SIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame,
format: PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, little-endian
format: PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, big-endian
format: PCM_SIGNED unknown sample rate, 24 bit, stereo, 6 bytes/frame, little-endian
format: PCM_SIGNED unknown sample rate, 24 bit, stereo, 6 bytes/frame, big-endian
format: PCM_UNSIGNED unknown sample rate, 8 bit, 6 channels, 6 bytes/frame,
format: PCM_SIGNED unknown sample rate, 8 bit, 6 channels, 6 bytes/frame,
format: PCM_SIGNED unknown sample rate, 16 bit, 6 channels, 12 bytes/frame, little-endian
format: PCM_SIGNED unknown sample rate, 16 bit, 6 channels, 12 bytes/frame, big-endian
format: PCM_SIGNED unknown sample rate, 24 bit, 6 channels, 18 bytes/frame, little-endian
format: PCM_SIGNED unknown sample rate, 24 bit, 6 channels, 18 bytes/frame, big-endian
format: PCM_SIGNED 48000.0 Hz, 16 bit, stereo, 4 bytes/frame, little-endian
format: PCM_SIGNED 48000.0 Hz, 16 bit, stereo, 4 bytes/frame, big-endian
info: interface Clip supporting 20 audio formats, and buffers of at least 32 bytes
info: SB X-Fi Surround 5.1 Pro, version Unknown Version
mixer com.sun.media.sound.DirectAudioDevice@4db323af
info: Port Built-in Input, version Unknown Version
mixer com.sun.media.sound.PortMixer@4b743fba
info: Built-in Input source port
info: Port Built-in Output, version Unknown Version
mixer com.sun.media.sound.PortMixer@45d1edcc
info: Port SB X-Fi Surround 5.1 Pro, version Unknown Version
mixer com.sun.media.sound.PortMixer@59530fe3
info: Port SB X-Fi Surround 5.1 Pro, version Unknown Version
mixer com.sun.media.sound.PortMixer@5c382de5
info: SB X-Fi Surround 5.1 Pro source port
是的，这是一个老问题，但由于我正在寻找所有通道、深度等，我决定编写一个小型调试方法，如果您想查看更多详细信息并想使用 java 8 流，这很有用:-)
享受：
//filter may be all if you want to include microphone
public void getDeviceInfos(String filter) {
Stream
.of(AudioSystem.getMixerInfo())
.forEach(info -> {
System.out.println("Mixer Name: " + info.getName());
System.out.println("Mixer Description: " + info.getDescription());
System.out.println("Mixer Vendor: " + info.getVendor());
Mixer m = AudioSystem.getMixer(info);
Stream
.of(Arrays.asList(m.getSourceLineInfo()), filter.equals("record") ? Arrays.asList(m.getTargetLineInfo()) : null)
.flatMap(List::stream)
.collect(Collectors.toList())
.forEach(lineInfo -> {
System.out.println(" info: " + lineInfo);
try {
Line line = AudioSystem.getLine(lineInfo);
if (line instanceof SourceDataLine || line instanceof TargetDataLine) {
Arrays.asList(((DataLine.Info) line.getLineInfo()).getFormats()).forEach(format -> {
System.out.println("Channels: " + format.getChannels());
System.out.println("Size in Bits: " + format.getSampleSizeInBits());
System.out.println("Frame Rate: " + format.getFrameRate());
System.out.println("Frame Size: " + format.getFrameSize());
System.out.println("Encoding: " + format.getEncoding());
System.out.println("Sample Rate: " + format.getSampleRate());
});
}
} catch (Exception ex) {
ex.printStackTrace();
}
});
});
}