下面列出了怎么用javax.sound.sampled.AudioFileFormat的API类实例代码及写法，或者点击链接到github查看源代码。
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];
}
@Override
public int write(AudioInputStream stream, AudioFileFormat.Type fileType, OutputStream out) throws IOException {
Objects.requireNonNull(stream);
Objects.requireNonNull(fileType);
Objects.requireNonNull(out);
//$$fb the following check must come first ! Otherwise
// the next frame length check may throw an IOException and
// interrupt iterating File Writers. (see bug 4351296)
// throws IllegalArgumentException if not supported
AiffFileFormat aiffFileFormat = (AiffFileFormat)getAudioFileFormat(fileType, stream);
// we must know the total data length to calculate the file length
if( stream.getFrameLength() == AudioSystem.NOT_SPECIFIED ) {
throw new IOException("stream length not specified");
}
return writeAiffFile(stream, aiffFileFormat, out);
}
public AudioFileFormat.Type[] getAudioFileTypes(AudioInputStream stream) {
AudioFileFormat.Type[] filetypes = new AudioFileFormat.Type[types.length];
System.arraycopy(types, 0, filetypes, 0, types.length);
// make sure we can write this stream
AudioFormat format = stream.getFormat();
AudioFormat.Encoding encoding = format.getEncoding();
if( (AudioFormat.Encoding.ALAW.equals(encoding)) ||
(AudioFormat.Encoding.ULAW.equals(encoding)) ||
(AudioFormat.Encoding.PCM_SIGNED.equals(encoding)) ||
(AudioFormat.Encoding.PCM_UNSIGNED.equals(encoding)) ) {
return filetypes;
}
return new AudioFileFormat.Type[0];
}
public int write(AudioInputStream stream, AudioFileFormat.Type fileType, OutputStream out) throws IOException {
//$$fb the following check must come first ! Otherwise
// the next frame length check may throw an IOException and
// interrupt iterating File Writers. (see bug 4351296)
// throws IllegalArgumentException if not supported
WaveFileFormat waveFileFormat = (WaveFileFormat)getAudioFileFormat(fileType, stream);
//$$fb when we got this far, we are committed to write this file
// we must know the total data length to calculate the file length
if( stream.getFrameLength() == AudioSystem.NOT_SPECIFIED ) {
throw new IOException("stream length not specified");
}
int bytesWritten = writeWaveFile(stream, waveFileFormat, out);
return bytesWritten;
}
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();
}
/**
* Returns the duration of the current track, in milliseconds.
* Currently only works for MP3s.
* @return the duration, or -1 if no track exists, else the {@code endTime}
* field of the beatmap loaded
* @author Tom Brito (http://stackoverflow.com/a/3056161)
*/
public static int getDuration() {
if (!trackExists() || lastBeatmap == null)
return -1;
if (duration == 0) {
// TAudioFileFormat method only works for MP3s
if (lastBeatmap.audioFilename.getName().endsWith(".mp3")) {
try {
AudioFileFormat fileFormat = AudioSystem.getAudioFileFormat(lastBeatmap.audioFilename);
if (fileFormat instanceof TAudioFileFormat) {
Map<?, ?> properties = ((TAudioFileFormat) fileFormat).properties();
Long microseconds = (Long) properties.get("duration");
duration = (int) (microseconds / 1000);
return duration;
}
} catch (UnsupportedAudioFileException | IOException e) {}
}
// fallback: use beatmap end time (often not the track duration)
duration = lastBeatmap.endTime;
}
return duration;
}
/**
* 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());
}
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();
}
WaveFileFormat(AudioFileFormat.Type type, int lengthInBytes, AudioFormat format, int lengthInFrames) {
super(type,lengthInBytes,format,lengthInFrames);
AudioFormat.Encoding encoding = format.getEncoding();
if( encoding.equals(AudioFormat.Encoding.ALAW) ) {
waveType = WAVE_FORMAT_ALAW;
} else if( encoding.equals(AudioFormat.Encoding.ULAW) ) {
waveType = WAVE_FORMAT_MULAW;
} else if( encoding.equals(AudioFormat.Encoding.PCM_SIGNED) ||
encoding.equals(AudioFormat.Encoding.PCM_UNSIGNED) ) {
waveType = WAVE_FORMAT_PCM;
} else {
waveType = WAVE_FORMAT_UNKNOWN;
}
}
public int write(AudioInputStream stream, AudioFileFormat.Type fileType, File out) throws IOException {
// throws IllegalArgumentException if not supported
WaveFileFormat waveFileFormat = (WaveFileFormat)getAudioFileFormat(fileType, stream);
// first write the file without worrying about length fields
FileOutputStream fos = new FileOutputStream( out ); // throws IOException
BufferedOutputStream bos = new BufferedOutputStream( fos, bisBufferSize );
int bytesWritten = writeWaveFile(stream, waveFileFormat, bos );
bos.close();
// now, if length fields were not specified, calculate them,
// open as a random access file, write the appropriate fields,
// close again....
if( waveFileFormat.getByteLength()== AudioSystem.NOT_SPECIFIED ) {
int dataLength=bytesWritten-waveFileFormat.getHeaderSize();
int riffLength=dataLength + waveFileFormat.getHeaderSize() - 8;
RandomAccessFile raf=new RandomAccessFile(out, "rw");
// skip RIFF magic
raf.skipBytes(4);
raf.writeInt(big2little( riffLength ));
// skip WAVE magic, fmt_ magic, fmt_ length, fmt_ chunk, data magic
raf.skipBytes(4+4+4+WaveFileFormat.getFmtChunkSize(waveFileFormat.getWaveType())+4);
raf.writeInt(big2little( dataLength ));
// that's all
raf.close();
}
return bytesWritten;
}
/**
* Obtains the audio file format of the URL provided. The URL must
* point to valid audio file data.
* @param url the URL from which file format information should be
* extracted
* @return an <code>AudioFileFormat</code> object describing the audio file format
* @throws UnsupportedAudioFileException if the URL does not point to valid audio
* file data recognized by the system
* @throws IOException if an I/O exception occurs
*/
public AudioFileFormat getAudioFileFormat(URL url) throws UnsupportedAudioFileException, IOException {
InputStream urlStream = url.openStream(); // throws IOException
AudioFileFormat fileFormat = null;
try {
fileFormat = getFMT(urlStream, false);
} finally {
urlStream.close();
}
return fileFormat;
}
/**
* Obtains the audio file format of the URL provided. The URL must
* point to valid audio file data.
* @param url the URL from which file format information should be
* extracted
* @return an <code>AudioFileFormat</code> object describing the audio file format
* @throws UnsupportedAudioFileException if the URL does not point to valid audio
* file data recognized by the system
* @throws IOException if an I/O exception occurs
*/
public AudioFileFormat getAudioFileFormat(URL url) throws UnsupportedAudioFileException, IOException {
AudioFileFormat fileFormat = null;
InputStream urlStream = url.openStream(); // throws IOException
try {
fileFormat = getCOMM(urlStream, false);
} finally {
urlStream.close();
}
return fileFormat;
}
/**
* Obtains the audio file format of the File provided. The File must
* point to valid audio file data.
* @param file the File from which file format information should be
* extracted
* @return an <code>AudioFileFormat</code> object describing the audio file format
* @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 AudioFileFormat getAudioFileFormat(File file) throws UnsupportedAudioFileException, IOException {
AudioFileFormat fileFormat = null;
FileInputStream fis = new FileInputStream(file); // throws IOException
// part of fix for 4325421
try {
fileFormat = getCOMM(fis, false);
} finally {
fis.close();
}
return fileFormat;
}
public static void main(String[] args) throws Exception {
test(AudioFileFormat.Type.AIFF);
test(AudioFileFormat.Type.AU);
test(AudioFileFormat.Type.WAVE);
if (testFailed == 0) {
out("All tests passed.");
} else {
out("" + testFailed + " of " + testTotal + " tests FAILED.");
System.out.flush();
throw new RuntimeException("Test FAILED.");
}
}
public AudioFileFormat getAudioFileFormat(URL url)
throws UnsupportedAudioFileException, IOException {
InputStream stream = url.openStream();
AudioFileFormat format;
try {
format = getAudioFileFormat(new BufferedInputStream(stream));
} finally {
stream.close();
}
return format;
}
/**
* Indicates whether an audio file of the type specified can be written
* from the audio input stream indicated.
* @param fileType file type for which write capabilities are queried
* @param stream for which file writing support is queried
* @return <code>true</code> if the file type is supported for this audio input stream,
* otherwise <code>false</code>
*/
public boolean isFileTypeSupported(AudioFileFormat.Type fileType, AudioInputStream stream) {
AudioFileFormat.Type types[] = getAudioFileTypes( stream );
for(int i=0; i<types.length; i++) {
if( fileType.equals( types[i] ) ) {
return true;
}
}
return false;
}
private void checkFormat(AudioFileFormat.Type type, AudioInputStream stream) {
if (!Type.WAVE.equals(type))
throw new IllegalArgumentException("File type " + type
+ " not supported.");
if (!stream.getFormat().getEncoding().equals(Encoding.PCM_FLOAT))
throw new IllegalArgumentException("File format "
+ stream.getFormat() + " not supported.");
}
public AudioFileFormat getAudioFileFormat(InputStream stream)
throws UnsupportedAudioFileException, IOException {
stream.mark(200);
AudioFileFormat format;
try {
format = internal_getAudioFileFormat(stream);
} finally {
stream.reset();
}
return format;
}
/**
* Obtains the audio file format of the File provided. The File must
* point to valid audio file data.
* @param file the File from which file format information should be
* extracted
* @return an <code>AudioFileFormat</code> object describing the audio file format
* @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 AudioFileFormat getAudioFileFormat(File file) throws UnsupportedAudioFileException, IOException {
AudioFileFormat fileFormat = null;
FileInputStream fis = new FileInputStream(file); // throws IOException
// part of fix for 4325421
try {
fileFormat = getCOMM(fis, false);
} finally {
fis.close();
}
return fileFormat;
}
public AudioFileFormat getAudioFileFormat(InputStream stream)
throws UnsupportedAudioFileException, IOException {
stream.mark(200);
AudioFileFormat format;
try {
format = internal_getAudioFileFormat(stream);
} finally {
stream.reset();
}
return format;
}
/**
* Obtains the audio file format of the File provided. The File must
* point to valid audio file data.
* @param file the File from which file format information should be
* extracted
* @return an <code>AudioFileFormat</code> object describing the audio file format
* @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 AudioFileFormat getAudioFileFormat(File file) throws UnsupportedAudioFileException, IOException {
AudioFileFormat fileFormat = null;
FileInputStream fis = new FileInputStream(file); // throws IOException
// part of fix for 4325421
try {
fileFormat = getFMT(fis, false);
} finally {
fis.close();
}
return fileFormat;
}
/**
* Indicates whether an audio file of the type specified can be written
* from the audio input stream indicated.
* @param fileType file type for which write capabilities are queried
* @param stream for which file writing support is queried
* @return <code>true</code> if the file type is supported for this audio input stream,
* otherwise <code>false</code>
*/
public boolean isFileTypeSupported(AudioFileFormat.Type fileType, AudioInputStream stream) {
AudioFileFormat.Type types[] = getAudioFileTypes( stream );
for(int i=0; i<types.length; i++) {
if( fileType.equals( types[i] ) ) {
return true;
}
}
return false;
}
public int write(AudioInputStream stream, AudioFileFormat.Type fileType, File out) throws IOException {
// throws IllegalArgumentException if not supported
WaveFileFormat waveFileFormat = (WaveFileFormat)getAudioFileFormat(fileType, stream);
// first write the file without worrying about length fields
FileOutputStream fos = new FileOutputStream( out ); // throws IOException
BufferedOutputStream bos = new BufferedOutputStream( fos, bisBufferSize );
int bytesWritten = writeWaveFile(stream, waveFileFormat, bos );
bos.close();
// now, if length fields were not specified, calculate them,
// open as a random access file, write the appropriate fields,
// close again....
if( waveFileFormat.getByteLength()== AudioSystem.NOT_SPECIFIED ) {
int dataLength=bytesWritten-waveFileFormat.getHeaderSize();
int riffLength=dataLength + waveFileFormat.getHeaderSize() - 8;
RandomAccessFile raf=new RandomAccessFile(out, "rw");
// skip RIFF magic
raf.skipBytes(4);
raf.writeInt(big2little( riffLength ));
// skip WAVE magic, fmt_ magic, fmt_ length, fmt_ chunk, data magic
raf.skipBytes(4+4+4+WaveFileFormat.getFmtChunkSize(waveFileFormat.getWaveType())+4);
raf.writeInt(big2little( dataLength ));
// that's all
raf.close();
}
return bytesWritten;
}
public int write(AudioInputStream stream, AudioFileFormat.Type fileType, File out) throws IOException {
// throws IllegalArgumentException if not supported
AuFileFormat auFileFormat = (AuFileFormat)getAudioFileFormat(fileType, stream);
// first write the file without worrying about length fields
FileOutputStream fos = new FileOutputStream( out ); // throws IOException
BufferedOutputStream bos = new BufferedOutputStream( fos, bisBufferSize );
int bytesWritten = writeAuFile(stream, auFileFormat, bos );
bos.close();
// now, if length fields were not specified, calculate them,
// open as a random access file, write the appropriate fields,
// close again....
if( auFileFormat.getByteLength()== AudioSystem.NOT_SPECIFIED ) {
// $$kk: 10.22.99: jan: please either implement this or throw an exception!
// $$fb: 2001-07-13: done. Fixes Bug 4479981
RandomAccessFile raf=new RandomAccessFile(out, "rw");
if (raf.length()<=0x7FFFFFFFl) {
// skip AU magic and data offset field
raf.skipBytes(8);
raf.writeInt(bytesWritten-AuFileFormat.AU_HEADERSIZE);
// that's all
}
raf.close();
}
return bytesWritten;
}
public AudioFileFormat getAudioFileFormat(URL url)
throws UnsupportedAudioFileException, IOException {
InputStream stream = url.openStream();
AudioFileFormat format;
try {
format = getAudioFileFormat(new BufferedInputStream(stream));
} finally {
stream.close();
}
return format;
}
public AudioFileFormat getAudioFileFormat(File file)
throws UnsupportedAudioFileException, IOException {
InputStream stream = new FileInputStream(file);
AudioFileFormat format;
try {
format = getAudioFileFormat(new BufferedInputStream(stream));
} finally {
stream.close();
}
return format;
}
public AudioFileFormat getAudioFileFormat(Sequence seq)
throws UnsupportedAudioFileException, IOException {
long totallen = seq.getMicrosecondLength() / 1000000;
long len = (long) (format.getFrameRate() * (totallen + 4));
return new AudioFileFormat(MIDI, format, (int) len);
}
public AudioFileFormat getAudioFileFormat(File file)
throws UnsupportedAudioFileException, IOException {
InputStream stream = new FileInputStream(file);
AudioFileFormat format;
try {
format = getAudioFileFormat(new BufferedInputStream(stream));
} finally {
stream.close();
}
return format;
}
public AudioFileFormat getAudioFileFormat(URL url)
throws UnsupportedAudioFileException, IOException {
InputStream stream = url.openStream();
AudioFileFormat format;
try {
format = getAudioFileFormat(new BufferedInputStream(stream));
} finally {
stream.close();
}
return format;
}
@Override
public AudioFileFormat getAudioFileFormat(URL url) throws UnsupportedAudioFileException, IOException {
InputStream is = url.openStream();
try{
return getAudioFileFormat(is);
}
finally{
is.close();
}
}