Thread: Multichannel Audio Stream into separate channel Buffers

I am relatively new to programming and have been carefully studying the documentation regarding Java audio. My end goal is to create an audio analysis app however I am having issues regarding dealing with the incoming datastream.


I have requested a targetdataline with a specified format (For now assume I am dealing with just two channels, each with different content). What I need to do is split this stream into multiple circular buffers (one for each channel) that I can then process individually.

try {
 
        line = (TargetDataLine) AudioSystem.getLine(info);
 
        line.open(format);
 
 
 
        ByteArrayOutputStream out  = new ByteArrayOutputStream();
 
        int numBytesRead;
 
        byte[] data = new byte[line.getBufferSize() / 5];
 
 
 
 
 
        line.start();
 
 
 
        int size = 0;
 
 
 
        while (size< 1000) {
 
 
 
            size++;
 
 
 
           numBytesRead =  line.read(data, 0, data.length);
 
 
 
           out.write(data, 0, numBytesRead);
 
        } 
 
 
 
         out.writeTo(outputStream);
 
 
        System.out.println(out.size());
 
    } catch (LineUnavailableException ex) {
 
 
 
    }finally{
 
        outputStream.close();
 
    }

This is my current code for getting the targetdataline into a buffer but this does not deal with splitting the channels. I have spent ages on google and cannot find a method for splitting the stream every two bytes. If anyone can even point me towards some reading material on this it would be much appreciated, or suggest a way to go about this.

Also, regarding this, is it more efficient to split the stream into multiple buffers (I could do each channel on a separate thread), or to write the entire stream to a buffer and then split the buffer content into separate channel data. (My head is telling me this is not efficient and I would need a bigger buffer size on one thread for this.

Thanks for your help. This is my first post so I hope I have done it right.