Java AudioInputStream类代码示例

import javax.sound.sampled.AudioInputStream; //导入依赖的package包/类
/**
 * Creates a new Sound instance by the specified file path. Loads the sound
 * data into a byte array and also retrieves information about the format of
 * the sound file.
 * 
 * Note that the constructor is private. In order to load files use the static
 * methods {@link #find(String)} or {@link #load(String)} methods depending on
 * whether you already loaded the sound or not.
 * 
 * @param is
 *          The input stream to load the sound from.
 */
private Sound(InputStream is, String name) {
  this.name = name;

  try {
    AudioInputStream in = AudioSystem.getAudioInputStream(is);
    if (in != null) {
      final AudioFormat baseFormat = in.getFormat();
      final AudioFormat decodedFormat = this.getOutFormat(baseFormat);
      // Get AudioInputStream that will be decoded by underlying VorbisSPI
      in = AudioSystem.getAudioInputStream(decodedFormat, in);
      this.stream = in;
      this.streamData = StreamUtilities.getBytes(this.stream);
      this.format = this.stream.getFormat();
    }
  } catch (final UnsupportedAudioFileException | IOException e) {

    log.log(Level.SEVERE, e.getMessage(), e);
  }
}
 

import javax.sound.sampled.AudioInputStream; //导入依赖的package包/类
@Override
public AudioFileFormat.Type[] getAudioFileTypes(AudioInputStream stream) {

    AudioFileFormat.Type[] filetypes = new AudioFileFormat.Type[types.length];
    System.arraycopy(types, 0, filetypes, 0, types.length);

    // make sure we can write this stream
    AudioFormat format = stream.getFormat();
    AudioFormat.Encoding encoding = format.getEncoding();

    if( AudioFormat.Encoding.ALAW.equals(encoding) ||
        AudioFormat.Encoding.ULAW.equals(encoding) ||
        AudioFormat.Encoding.PCM_SIGNED.equals(encoding) ||
        AudioFormat.Encoding.PCM_UNSIGNED.equals(encoding) ) {

        return filetypes;
    }

    return new AudioFileFormat.Type[0];
}
 

import javax.sound.sampled.AudioInputStream; //导入依赖的package包/类
@Override
public AudioInputStream getAudioInputStream(final InputStream stream)
        throws UnsupportedAudioFileException, IOException {

    final StandardFileFormat format = getAudioFileFormat(stream);
    final AudioFormat af = format.getFormat();
    final long length = format.getLongFrameLength();
    // we've got everything, the stream is supported and it is at the
    // beginning of the header, so find the data chunk again and return an
    // AudioInputStream
    final RIFFReader riffiterator = new RIFFReader(stream);
    while (riffiterator.hasNextChunk()) {
        RIFFReader chunk = riffiterator.nextChunk();
        if (chunk.getFormat().equals("data")) {
            return new AudioInputStream(chunk, af, length);
        }
    }
    throw new UnsupportedAudioFileException();
}
 

import javax.sound.sampled.AudioInputStream; //导入依赖的package包/类
/**
 * This method is a replacement for
 * AudioSystem.getAudioInputStream(AudioFormat, AudioInputStream), which is
 * used for audio format conversion at the stream level. This method includes
 * a workaround for converting from an mp3 AudioInputStream when the sketch
 * is running in an applet. The workaround was developed by the Tritonus team
 * and originally comes from the package javazoom.jlgui.basicplayer
 * 
 * @param targetFormat
 *           the AudioFormat to convert the stream to
 * @param sourceStream
 *           the stream containing the unconverted audio
 * @return an AudioInputStream in the target format
 */
AudioInputStream getAudioInputStream(AudioFormat targetFormat,
		AudioInputStream sourceStream)
{
	try
	{
		return AudioSystem.getAudioInputStream(targetFormat, sourceStream);
	}
	catch (IllegalArgumentException iae)
	{
		debug("Using AppletMpegSPIWorkaround to get codec");
		try
		{
			Class.forName("javazoom.spi.mpeg.sampled.convert.MpegFormatConversionProvider");
			return new javazoom.spi.mpeg.sampled.convert.MpegFormatConversionProvider().getAudioInputStream(
																																			targetFormat,
																																			sourceStream);
		}
		catch (ClassNotFoundException cnfe)
		{
			throw new IllegalArgumentException("Mpeg codec not properly installed");
		}
	}
}
 

import javax.sound.sampled.AudioInputStream; //导入依赖的package包/类
/**
 * WAV files only
 * 
 * @param name
 *            Name to store sound as
 * @param file
 *            Sound file
 */
public static void loadSound(String name, String file) {
	try {
		System.out.print("Loading sound file: \"" + file + "\" into clip: \"" + name + "\", ");
		BufferedInputStream in = new BufferedInputStream(SoundPlayer.class.getResourceAsStream(file));
		AudioInputStream ain = AudioSystem.getAudioInputStream(in);

		Clip c = AudioSystem.getClip();
		c.open(ain);
		c.setLoopPoints(0, -1);
		clips.put(name, c);
		ain.close();
		in.close();
		System.out.println("Done.");
	} catch (Exception e) {
		System.out.println("Failed. (" + e.getMessage() + ")");
	}
}
 

import javax.sound.sampled.AudioInputStream; //导入依赖的package包/类
/**
 * Verifies the frame length after the stream was saved/read to/from file.
 */
private static void testAfterSaveToFile(final AudioFileWriter afw,
                                        final AudioFileFormat.Type type,
                                        AudioInputStream ais)
        throws IOException {
    final File temp = File.createTempFile("sound", ".tmp");
    try {
        afw.write(ais, type, temp);
        ais = AudioSystem.getAudioInputStream(temp);
        final long frameLength = ais.getFrameLength();
        ais.close();
        validate(frameLength);
    } catch (IllegalArgumentException | UnsupportedAudioFileException
            ignored) {
    } finally {
        Files.delete(Paths.get(temp.getAbsolutePath()));
    }
}
 

import javax.sound.sampled.AudioInputStream; //导入依赖的package包/类
private void readStream(AudioInputStream as, long byteLen) throws IOException {
    // arrays "only" max. 2GB
    int intLen;
    if (byteLen > 2147483647) {
        intLen = 2147483647;
    } else {
        intLen = (int) byteLen;
    }
    loadedAudio = new byte[intLen];
    loadedAudioByteLength = 0;

    // this loop may throw an IOException
    while (true) {
        int bytesRead = as.read(loadedAudio, loadedAudioByteLength, intLen - loadedAudioByteLength);
        if (bytesRead <= 0) {
            as.close();
            break;
        }
        loadedAudioByteLength += bytesRead;
    }
}
 

import javax.sound.sampled.AudioInputStream; //导入依赖的package包/类
public void write(AudioInputStream stream, RIFFWriter writer)
        throws IOException {

    RIFFWriter fmt_chunk = writer.writeChunk("fmt ");

    AudioFormat format = stream.getFormat();
    fmt_chunk.writeUnsignedShort(3); // WAVE_FORMAT_IEEE_FLOAT
    fmt_chunk.writeUnsignedShort(format.getChannels());
    fmt_chunk.writeUnsignedInt((int) format.getSampleRate());
    fmt_chunk.writeUnsignedInt(((int) format.getFrameRate())
            * format.getFrameSize());
    fmt_chunk.writeUnsignedShort(format.getFrameSize());
    fmt_chunk.writeUnsignedShort(format.getSampleSizeInBits());
    fmt_chunk.close();
    RIFFWriter data_chunk = writer.writeChunk("data");
    byte[] buff = new byte[1024];
    int len;
    while ((len = stream.read(buff, 0, buff.length)) != -1)
        data_chunk.write(buff, 0, len);
    data_chunk.close();
}
 

import javax.sound.sampled.AudioInputStream; //导入依赖的package包/类
public static void main(String[] params) throws Exception {

        AudioInputStream is =
            AudioSystem.getAudioInputStream(new
                                            ByteArrayInputStream(new byte[] {
                                                (byte)0x2E, (byte)0x73, (byte)0x6E, (byte)0x64, (byte)0x00,
                                                (byte)0x00, (byte)0x00, (byte)0x18,
                                                (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0x00,
                                                (byte)0x00, (byte)0x00, (byte)0x03,
                                                (byte)0x00, (byte)0x00, (byte)0x1F, (byte)0x40, (byte)0x00,
                                                (byte)0x00, (byte)0x00, (byte)0x01,
                                                (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00,
                                                (byte)0x00, (byte)0x00, (byte)0x00,
                                            }));
        if (is.getFrameLength() != AudioSystem.NOT_SPECIFIED) {
            System.out.println("frame length should be NOT_SPECIFIED, but is: "+is.getFrameLength());
            failed=true;
        }
        //assertTrue(is.getFrameLength() == AudioSystem.NOT_SPECIFIED);
        //assertTrue(is.read(new byte[8]) == 8);
        //assertTrue(is.read(new byte[2]) == -1);
        if (failed) throw new Exception("Test FAILED!");
        System.out.println("Test Passed.");
    }
 

import javax.sound.sampled.AudioInputStream; //导入依赖的package包/类
/**
 * Obtains an audio stream from the File provided.  The File must
 * point to valid audio file data.
 * @param file the File for which the <code>AudioInputStream</code> should be
 * constructed
 * @return an <code>AudioInputStream</code> object based on the audio file data pointed
 * to by the File
 * @throws UnsupportedAudioFileException if the File does not point to valid audio
 * file data recognized by the system
 * @throws IOException if an I/O exception occurs
 */
public AudioInputStream getAudioInputStream(File file)
    throws UnsupportedAudioFileException, IOException {

    FileInputStream fis = new FileInputStream(file); // throws IOException
    AudioFileFormat fileFormat = null;
    // part of fix for 4325421
    try {
        fileFormat = getCOMM(fis, false);
    } finally {
        if (fileFormat == null) {
            fis.close();
        }
    }
    return new AudioInputStream(fis, fileFormat.getFormat(), fileFormat.getFrameLength());
}
 

import javax.sound.sampled.AudioInputStream; //导入依赖的package包/类
private void readStream(AudioInputStream as) throws IOException {

        DirectBAOS baos = new DirectBAOS();
        byte buffer[] = new byte[16384];
        int bytesRead = 0;
        int totalBytesRead = 0;

        // this loop may throw an IOException
        while( true ) {
            bytesRead = as.read(buffer, 0, buffer.length);
            if (bytesRead <= 0) {
                as.close();
                break;
            }
            totalBytesRead += bytesRead;
            baos.write(buffer, 0, bytesRead);
        }
        loadedAudio = baos.getInternalBuffer();
        loadedAudioByteLength = totalBytesRead;
    }
 

import javax.sound.sampled.AudioInputStream; //导入依赖的package包/类
public AudioFileFormat.Type[] getAudioFileTypes(AudioInputStream stream) {

        AudioFileFormat.Type[] filetypes = new AudioFileFormat.Type[types.length];
        System.arraycopy(types, 0, filetypes, 0, types.length);

        // make sure we can write this stream
        AudioFormat format = stream.getFormat();
        AudioFormat.Encoding encoding = format.getEncoding();

        if( (AudioFormat.Encoding.ALAW.equals(encoding)) ||
            (AudioFormat.Encoding.ULAW.equals(encoding)) ||
            (AudioFormat.Encoding.PCM_SIGNED.equals(encoding)) ||
            (AudioFormat.Encoding.PCM_UNSIGNED.equals(encoding)) ) {

            return filetypes;
        }

        return new AudioFileFormat.Type[0];
    }
 

import javax.sound.sampled.AudioInputStream; //导入依赖的package包/类
public static AudioInputStream getPCMConvertedAudioInputStream(AudioInputStream ais) {
    // we can't open the device for non-PCM playback, so we have
    // convert any other encodings to PCM here (at least we try!)
    AudioFormat af = ais.getFormat();

    if( (!af.getEncoding().equals(AudioFormat.Encoding.PCM_SIGNED)) &&
        (!af.getEncoding().equals(AudioFormat.Encoding.PCM_UNSIGNED))) {

        try {
            AudioFormat newFormat =
                new AudioFormat( AudioFormat.Encoding.PCM_SIGNED,
                                 af.getSampleRate(),
                                 16,
                                 af.getChannels(),
                                 af.getChannels() * 2,
                                 af.getSampleRate(),
                                 Platform.isBigEndian());
            ais = AudioSystem.getAudioInputStream(newFormat, ais);
        } catch (Exception e) {
            if (Printer.err) e.printStackTrace();
            ais = null;
        }
    }

    return ais;
}
 

import javax.sound.sampled.AudioInputStream; //导入依赖的package包/类
public AudioInputStream getAudioInputStream(InputStream stream)
        throws UnsupportedAudioFileException, IOException {

    AudioFileFormat format = getAudioFileFormat(stream);
    RIFFReader riffiterator = new RIFFReader(stream);
    if (!riffiterator.getFormat().equals("RIFF"))
        throw new UnsupportedAudioFileException();
    if (!riffiterator.getType().equals("WAVE"))
        throw new UnsupportedAudioFileException();
    while (riffiterator.hasNextChunk()) {
        RIFFReader chunk = riffiterator.nextChunk();
        if (chunk.getFormat().equals("data")) {
            return new AudioInputStream(chunk, format.getFormat(), chunk
                    .getSize());
        }
    }
    throw new UnsupportedAudioFileException();
}
 

import javax.sound.sampled.AudioInputStream; //导入依赖的package包/类
public AudioInputStream getAudioInputStream(AudioFormat targetFormat,
        AudioFloatInputStream sourceStream) {

    if (!isConversionSupported(targetFormat, sourceStream.getFormat()))
        throw new IllegalArgumentException("Unsupported conversion: "
                + sourceStream.getFormat().toString() + " to "
                + targetFormat.toString());
    if (targetFormat.getChannels() != sourceStream.getFormat()
            .getChannels())
        sourceStream = new AudioFloatInputStreamChannelMixer(sourceStream,
                targetFormat.getChannels());
    if (Math.abs(targetFormat.getSampleRate()
            - sourceStream.getFormat().getSampleRate()) > 0.000001)
        sourceStream = new AudioFloatInputStreamResampler(sourceStream,
                targetFormat);
    return new AudioInputStream(new AudioFloatFormatConverterInputStream(
            targetFormat, sourceStream), targetFormat, sourceStream
            .getFrameLength());
}