Re: Java Sound API question

Hi Olvier,


In my case the audio file is located in the same directory as the
applet. So i need not get it from a remote server. The reason why we
are streaming is, the audio file is large i.e more than 50 MB. So in my
audio player iam providing a Start, Stop, Pause, Slider, Fast Forward,
Rewind controls. Using the horizontal slider control, the user must be
able to jump to a location in the audio file. Since we are streaming
the file, i would like to know how to jump to a location in the audio
file while streaming/buffering? Is there any method avvailable for
jumping to a location similar to Clip interface's
setMicroSecondPosition()?

I found the following code in javaalmaanac and i tested it, it works
fine for streaming... But how to jump to a location while streaming?

===========================Code
================================================

try {
        // From file
        AudioInputStream stream = AudioSystem.getAudioInputStream(new
File("audiofile"));

        // From URL
        stream = AudioSystem.getAudioInputStream(new
URL("http://hostname/audiofile"));

        // At present, ALAW and ULAW encodings must be converted
        // to PCM_SIGNED before it can be played
        AudioFormat format = stream.getFormat();
        if (format.getEncoding() != AudioFormat.Encoding.PCM_SIGNED) {
            format = new AudioFormat(
                    AudioFormat.Encoding.PCM_SIGNED,
                    format.getSampleRate(),
                    format.getSampleSizeInBits()*2,
                    format.getChannels(),
                    format.getFrameSize()*2,
                    format.getFrameRate(),
                    true); // big endian
            stream = AudioSystem.getAudioInputStream(format, stream);
        }

        // Create line
        SourceDataLine.Info info = new DataLine.Info(
            SourceDataLine.class, stream.getFormat(),
            ((int)stream.getFrameLength()*format.getFrameSize()));
        SourceDataLine line = (SourceDataLine)
AudioSystem.getLine(info);
        line.open(stream.getFormat());
        line.start();

        // Continuously read and play chunks of audio
        int numRead = 0;
        byte[] buf = new byte[line.getBufferSize()];
        while ((numRead = stream.read(buf, 0, buf.length)) >= 0) {
            int offset = 0;
            while (offset < numRead) {
                offset += line.write(buf, offset, numRead-offset);
            }
        }
        line.drain();
        line.stop();
    } catch (MalformedURLException e) {
    } catch (IOException e) {
    } catch (LineUnavailableException e) {
    } catch (UnsupportedAudioFileException e) {
    }

=======================End of Code
================================================

Thank you very much for your replies.
Kindly help.

Urs,
Sundar