loop Audio Format - Java javax.sound.sampled

Java examples for javax.sound.sampled:Audio

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Description

loop Audio Format

Demo Code


import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.ShortBuffer;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.SourceDataLine;
import javax.sound.sampled.TargetDataLine;

public class Main{
    public static void loop(AudioFormat sourceFormat,
            ValueAccessor<Boolean> stopper, EventListener listener,
            byte[] bytes) throws AudioUtil.Exception {
        _validateAudioFormat(sourceFormat);
        try {//from w  w w .j a  va 2s.c o  m
            DataLine.Info info = new DataLine.Info(SourceDataLine.class,
                    sourceFormat);
            SourceDataLine sourceLine = (SourceDataLine) AudioSystem
                    .getLine(info);
            sourceLine.open(sourceFormat);
            sourceLine.start();
            int read;
            int totalRead = 0;
            int bufferSize = 256;
            byte buffer[] = new byte[bufferSize];
            outerLoop: do {
                ByteArrayInputStream baos = new ByteArrayInputStream(bytes);
                totalRead = 0;
                while ((read = baos.read(buffer, 0, buffer.length)) != (-1)) {
                    totalRead += read;
                    sourceLine.write(buffer, 0, read);
                    if (listener != null) {
                        listener.updatePosition(totalRead
                                / sourceFormat.getFrameSize());
                    }
                    if (stopper != null && stopper.value()) {
                        if (listener != null)
                            listener.stopped();
                        break outerLoop;
                    }
                }
            } while (true);
            sourceLine.drain();
            sourceLine.close();
        } catch (java.lang.Exception e) {
            throw new AudioUtil.Exception(e);
        }
    }
    private static void _validateAudioFormat(AudioFormat format)
            throws AudioUtil.Exception {
        if (format.getSampleSizeInBits() != 16 || format.getChannels() != 1
                || format.getEncoding() != AudioFormat.Encoding.PCM_SIGNED) {
            throw new AudioUtil.Exception(
                    new UnsupportedAudioFormatException());
        }
    }
    public static void read(AudioFormat sourceFormat,
            InputStream sourceStream, OutputStream outStream)
            throws AudioUtil.Exception {
        _validateAudioFormat(sourceFormat);
        try {
            int read;
            int bufferSize = (int) sourceFormat.getSampleRate()
                    * sourceFormat.getFrameSize();
            byte buffer[] = new byte[bufferSize];
            while ((read = sourceStream.read(buffer, 0, buffer.length)) != (-1)) {
                outStream.write(buffer, 0, read);
            }
        } catch (java.lang.Exception e) {
            throw new AudioUtil.Exception(e);
        }
    }
}

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