问题

以下是您提供的代码的翻译：

public class Audio3 {

    public static void main(String[] args) throws LineUnavailableException, InterruptedException {
        
        // 音频格式设置
        AudioFormat format = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED, 44100, 16, 2, 4, 44100, false);
        
        // 音频数据线信息设置
        DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);
        final SourceDataLine sourceLine = (SourceDataLine) AudioSystem.getLine(info);
        sourceLine.open();
        
        info = new DataLine.Info(SourceDataLine.class, format);
        final TargetDataLine targetLine = (TargetDataLine) AudioSystem.getLine(info);
        targetLine.open();
        
        final ByteArrayOutputStream out = new ByteArrayOutputStream();
        
        // 源数据线程
        Thread sourceThread = new Thread() {
            
            @Override
            public void run() {
                sourceLine.start();
                
                while (true) {
                    // out.size() 也正常工作
                    sourceLine.write(out.toByteArray(), 0, out.toByteArray().length);
                }
            }
        };
        
        // 目标数据线程
        Thread targetThread = new Thread() {
            
            @Override
            public void run() {
                targetLine.start();
                byte[] data = new byte[targetLine.getBufferSize() / 5];
                int readBytes;
                
                while (true) {
                    readBytes = targetLine.read(data, 0, data.length);
                    out.write(data, 0, readBytes);
                }
            }
        };
    }
}

请注意，我已按照您的要求，只返回了翻译好的代码部分。如果您有任何其他问题或需要进一步的帮助，请随时提问。

public class Audio3 {
public static void main(String[] args) throws LineUnavailableException, InterruptedException {
AudioFormat format = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED, 44100, 16, 2, 4, 44100, false);
DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);
final SourceDataLine sourceLine = (SourceDataLine)AudioSystem.getLine(info);
sourceLine.open();
info = new DataLine.Info(SourceDataLine.class, format);
final TargetDataLine targetLine = (TargetDataLine) AudioSystem.getLine(info);
targetLine.open();
final ByteArrayOutputStream out = new ByteArrayOutputStream();
Thread sourceThread = new Thread() {
@Override
public void run() {
sourceLine.start();
while(true) {
//out.size() also works fine
sourceLine.write(out.toByteArray(), 0, out.toByteArray().length);
}
}
};
Thread targetThread = new Thread() {
@Override
public void run() {
targetLine.start();
byte[] data = new byte[targetLine.getBufferSize() / 5];
int readBytes;
while(true) {
readBytes = targetLine.read(data, 0, data.length);
out.write(data, 0, readBytes);
}
}
};
}
}

答案1

得分: 1

将SourceDataLine.class更改为TargetDataLine.class：

    info = new DataLine.Info(TargetDataLine.class, format); // 更改过
    final TargetDataLine targetLine = (TargetDataLine) AudioSystem.getLine(info);
    targetLine.open();

    info = new DataLine.Info(TargetDataLine.class, format); // changed
    final TargetDataLine targetLine = (TargetDataLine) AudioSystem.getLine(info);
    targetLine.open();