javax.sound.sampled.AudioSystem#getAudioInputStream ( )源码实例Demo

/**
 * Convert signal to signed PCM for further processing.
 *
 * @param file audio file
 * @return PCM audio inputstream
 * @throws UnsupportedAudioFileException if the file is not supported by {@link AudioSystem}.
 * @throws IOException if something goes wrong while opening the audio file
 */
private static AudioInputStream openStream(final File file) throws UnsupportedAudioFileException, IOException {
    final AudioInputStream origAudioInputStream = AudioSystem.getAudioInputStream(file);
    final AudioFormat origFormat = origAudioInputStream.getFormat();
    return AudioSystem.getAudioInputStream(
            new AudioFormat(
                    AudioFormat.Encoding.PCM_SIGNED,
                    origFormat.getSampleRate(),
                    origFormat.getSampleSizeInBits() <= 0 ? 16 : origFormat.getSampleSizeInBits(),
                    origFormat.getChannels(),
                    origFormat.getFrameSize() <= 0 ? origFormat.getChannels() * 2 : origFormat.getFrameSize(),
                    origFormat.getSampleRate(),
                    false),
            origAudioInputStream
    );
}
 

private void playSirenSound() {
	try {
		File soundFile = new File(sirenFile);
		AudioInputStream soundIn = AudioSystem.getAudioInputStream(soundFile);
		AudioFormat format = soundIn.getFormat();
		DataLine.Info info = new DataLine.Info(Clip.class, format);
		clip = (Clip) AudioSystem.getLine(info);
		clip.addLineListener(new LineListener() {
			@Override
			public void update(LineEvent event) {
				if (event.getType() == LineEvent.Type.STOP) {
					soundOn = false;
				}
			}
		});
		clip.open(soundIn);
		clip.start();
		soundOn = true;
	} catch (Exception e) {
		e.printStackTrace();
	}
}
 

/**
 * WAVE�t�@�C�������[�h
 * @param url WAVE�t�@�C����URL
 */
public static void load(URL url) throws UnsupportedAudioFileException, IOException, LineUnavailableException {
    // �I�[�f�B�I�X�g���[�����J��
    AudioInputStream ais = AudioSystem.getAudioInputStream(url);
    // WAVE�t�@�C���̃t�H�[�}�b�g���擾
    AudioFormat format = ais.getFormat();
    // ���C�����擾
    DataLine.Info info = new DataLine.Info(SourceDataLine.class, format, AudioSystem.NOT_SPECIFIED);

    // WAVE�f�[�^���擾
    DataClip clip = new DataClip(ais);
    // WAVE�f�[�^��o�^
    clips[counter] = clip;
    lines[counter] = (SourceDataLine)AudioSystem.getLine(info);
    
    // ���C�����J��
    lines[counter].open(format);

    counter++;
}
 

/**
 * WAVE�t�@�C�������[�h
 * @param url WAVE�t�@�C����URL
 */
public static void load(URL url) throws UnsupportedAudioFileException, IOException, LineUnavailableException {
    // �I�[�f�B�I�X�g���[�����J��
    AudioInputStream ais = AudioSystem.getAudioInputStream(url);
    // WAVE�t�@�C���̃t�H�[�}�b�g���擾
    AudioFormat format = ais.getFormat();
    // ���C�����擾
    DataLine.Info info = new DataLine.Info(SourceDataLine.class, format, AudioSystem.NOT_SPECIFIED);

    // WAVE�f�[�^���擾
    DataClip clip = new DataClip(ais);
    
    // WAVE�f�[�^��o�^
    clips[counter] = clip;
    lines[counter] = (SourceDataLine)AudioSystem.getLine(info);
    
    // ���C�����J��
    lines[counter].open(format);

    counter++;
}
 

/**
 * Loads and returns a Clip from a resource.
 * @param ref the resource name
 * @param isMP3 true if MP3, false if WAV
 * @return the loaded and opened clip
 */
private static MultiClip loadClip(String ref, boolean isMP3) {
	try {
		URL url = ResourceLoader.getResource(ref);

		// check for 0 length files
		InputStream in = url.openStream();
		if (in.available() == 0) {
			in.close();
			return new MultiClip(ref, null);
		}
		in.close();

		AudioInputStream audioIn = AudioSystem.getAudioInputStream(url);
		return loadClip(ref, audioIn, isMP3);
	} catch (Exception e) {
		softErr(e, "Failed to load clip %s", ref);
		return null;
	}
}
 

@Override
public void run() {
    log("ConversionThread[" + num + "] started.");
    try {
        InputStream inStream = new ByteArrayInputStream(pcmBuffer);

        AudioInputStream pcmStream = new AudioInputStream(
                inStream, pcmFormat, AudioSystem.NOT_SPECIFIED);
        AudioInputStream alawStream = AudioSystem.getAudioInputStream(alawFormat, pcmStream);

        ByteArrayOutputStream outStream = new ByteArrayOutputStream();
        int read = 0;
        byte[] data = new byte[4096];
        while((read = alawStream.read(data)) != -1) {
            outStream.write(data, 0, read);
       }
       alawStream.close();
       resultArray = outStream.toByteArray();
    } catch (Exception ex) {
        log("ConversionThread[" + num + "] exception:");
        log(ex);
    }
    log("ConversionThread[" + num + "] completed.");
}
 

@Override
public Clip loadAsset( InputStream input, AssetInfo assetInfo ) throws Exception
{
	AudioInputStream ais = AudioSystem.getAudioInputStream( input );
	Clip clip = AudioSystem.getClip();
	clip.open( ais );
	return clip;
}
 

public static void main(String args[]) throws Exception {
    System.out.println();
    System.out.println();
    System.out.println("4399551: Repost of bug candidate: cannot replay aif file (Review ID: 108108)");
    // try to read this file
    AudioSystem.getAudioInputStream(new ByteArrayInputStream(SHORT_AIFC_ULAW));
    System.out.println("  test passed.");
}
 

/**
 * Tests the {@code AudioInputStream} fetched from the fake header.
 * <p>
 * Note that the frameLength is stored as long which means
 * that {@code AudioInputStream} must store all possible data from au file.
 */
private static void testAIS(final byte[] type, final int rate,
                            final int channel, final long size)
        throws Exception {
    final byte[] header = createHeader(type, rate, channel, size);
    final ByteArrayInputStream fake = new ByteArrayInputStream(header);
    final AudioInputStream ais = AudioSystem.getAudioInputStream(fake);
    final AudioFormat format = ais.getFormat();
    final long frameLength = size / format.getFrameSize();
    if (size != MAX_UNSIGNED_INT) {
        if (frameLength != ais.getFrameLength()) {
            System.err.println("Expected: " + frameLength);
            System.err.println("Actual: " + ais.getFrameLength());
            throw new RuntimeException();
        }
    } else {
        if (ais.getFrameLength() != AudioSystem.NOT_SPECIFIED) {
            System.err.println("Expected: " + AudioSystem.NOT_SPECIFIED);
            System.err.println("Actual: " + ais.getFrameLength());
            throw new RuntimeException();
        }
    }
    if (ais.available() < 0) {
        System.err.println("available should be >=0: " + ais.available());
        throw new RuntimeException();
    }
    validateFormat(type[1], rate, channel, format);
}
 

public static Clip readMusicFile(InputStream audioFilePath, SoundOutput soundOutput) throws UnsupportedAudioFileException, IOException, LineUnavailableException {
	AudioInputStream audioStream = AudioSystem.getAudioInputStream(audioFilePath);
	AudioFormat format = audioStream.getFormat();
	DataLine.Info info = new DataLine.Info(Clip.class, format);
	
	Mixer mixer = soundOutput.getMixer();
	Clip audioClip = (Clip) mixer.getLine(info);
	audioClip.open(audioStream);
	return audioClip;
}
 

public JavaSoundAudioClip(InputStream in) throws IOException {
    if (DEBUG || Printer.debug)Printer.debug("JavaSoundAudioClip.<init>");

    BufferedInputStream bis = new BufferedInputStream(in, STREAM_BUFFER_SIZE);
    bis.mark(STREAM_BUFFER_SIZE);
    boolean success = false;
    try {
        AudioInputStream as = AudioSystem.getAudioInputStream(bis);
        // load the stream data into memory
        success = loadAudioData(as);

        if (success) {
            success = false;
            if (loadedAudioByteLength < CLIP_THRESHOLD) {
                success = createClip();
            }
            if (!success) {
                success = createSourceDataLine();
            }
        }
    } catch (UnsupportedAudioFileException e) {
        // not an audio file
        try {
            MidiFileFormat mff = MidiSystem.getMidiFileFormat(bis);
            success = createSequencer(bis);
        } catch (InvalidMidiDataException e1) {
            success = false;
        }
    }
    if (!success) {
        throw new IOException("Unable to create AudioClip from input stream");
    }
}
 

public static synchronized Clip playback(URL url, float addVolume) {
    try {
        try ( AudioInputStream in = AudioSystem.getAudioInputStream(url)) {
            return playback(in, addVolume);
        }
    } catch (Exception e) {
        logger.debug(e.toString());
        return null;
    }
}
 

public static AudioFloatInputStream getInputStream(InputStream stream)
        throws UnsupportedAudioFileException, IOException {
    return new DirectAudioFloatInputStream(AudioSystem
            .getAudioInputStream(stream));
}
 

public static Sample open(final File file) throws Exception {
	final AudioInputStream audioStream = AudioSystem.getAudioInputStream(file);
	return open(audioStream);
}
 

/**
 * Inits Audio ressources from InputStream.
 */
protected void initAudioInputStream(final InputStream inputStream)
		throws UnsupportedAudioFileException, IOException {
	m_audioInputStream = AudioSystem.getAudioInputStream(inputStream);
	m_audioFileFormat = AudioSystem.getAudioFileFormat(inputStream);
}
 

public static AudioFloatInputStream getInputStream(File file)
        throws UnsupportedAudioFileException, IOException {
    return new DirectAudioFloatInputStream(AudioSystem
            .getAudioInputStream(file));
}
 

public static AudioFloatInputStream getInputStream(URL url)
        throws UnsupportedAudioFileException, IOException {
    return new DirectAudioFloatInputStream(AudioSystem
            .getAudioInputStream(url));
}
 

public static AudioFloatInputStream getInputStream(InputStream stream)
        throws UnsupportedAudioFileException, IOException {
    return new DirectAudioFloatInputStream(AudioSystem
            .getAudioInputStream(stream));
}
 

/**
 * 
 * @param audioFile
 *            audiofile
 * @param line
 *            line
 * @param lineListener
 *            lineListener
 * @param outputMode
 *            if MONO, force output to be mono; if STEREO, force output to
 *            be STEREO; if LEFT_ONLY, play a mono signal over the left
 *            channel of a stereo output, or mute the right channel of a
 *            stereo signal; if RIGHT_ONLY, do the same with the right
 *            output channel.
 * @throws IOException
 *             IOException
 * @throws UnsupportedAudioFileException
 *             UnsupportedAudioFileException
 */
public AudioPlayer(File audioFile, SourceDataLine line, LineListener lineListener, int outputMode)
		throws IOException, UnsupportedAudioFileException {
	this.ais = AudioSystem.getAudioInputStream(audioFile);
	this.line = line;
	this.lineListener = lineListener;
	this.outputMode = outputMode;
}
 

/**
 * 
 * @param audioFile
 *            audiofile
 * @param line
 *            line
 * @param lineListener
 *            lineListener
 * @param outputMode
 *            if MONO, force output to be mono; if STEREO, force output to
 *            be STEREO; if LEFT_ONLY, play a mono signal over the left
 *            channel of a stereo output, or mute the right channel of a
 *            stereo signal; if RIGHT_ONLY, do the same with the right
 *            output channel.
 * @throws IOException
 *             IOException
 * @throws UnsupportedAudioFileException
 *             UnsupportedAudioFileException
 */
public AudioPlayer(File audioFile, SourceDataLine line, LineListener lineListener, int outputMode)
		throws IOException, UnsupportedAudioFileException {
	this.ais = AudioSystem.getAudioInputStream(audioFile);
	this.line = line;
	this.lineListener = lineListener;
	this.outputMode = outputMode;
}