public static Clip loadClip(URL url) {
Clip clip = null;
String fnm = "" + url;
try {
AudioInputStream stream = AudioSystem.getAudioInputStream(url);
AudioFormat format = stream.getFormat();
if ((format.getEncoding() == AudioFormat.Encoding.ULAW)
|| (format.getEncoding() == AudioFormat.Encoding.ALAW)) {
AudioFormat newFormat =
new AudioFormat(
AudioFormat.Encoding.PCM_SIGNED,
format.getSampleRate(),
format.getSampleSizeInBits() * 2,
format.getChannels(),
format.getFrameSize() * 2,
format.getFrameRate(),
true); // big endian
stream = AudioSystem.getAudioInputStream(newFormat, stream);
// System.out.println("Converted Audio format: " + newFormat);
format = newFormat;
}
DataLine.Info info = new DataLine.Info(Clip.class, format);
// make sure sound system supports data line
if (!AudioSystem.isLineSupported(info)) {
System.out.println("Unsupported Clip File: " + fnm);
return null;
}
// get clip line resource
clip = (Clip) AudioSystem.getLine(info);
clip.open(stream); // open the sound file as a clip
stream.close(); // we're done with the input stream
// duration (in secs) of the clip
double duration = clip.getMicrosecondLength() / 1000000.0; // new
if (duration <= 1.0) {
System.out.println("WARNING. Duration <= 1 sec : " + duration + " secs");
System.out.println(
" The clip in " + fnm + " may not play in J2SE 1.5 -- make it longer");
}
// else
// System.out.println(fnm + ": Duration: " + duration + " secs");
} // end of try block
catch (UnsupportedAudioFileException audioException) {
System.out.println("Unsupported audio file: " + fnm);
} catch (LineUnavailableException noLineException) {
System.out.println("No audio line available for : " + fnm);
} catch (IOException ioException) {
System.out.println("Could not read: " + fnm);
} catch (Exception e) {
System.out.println("Problem with " + fnm);
}
return clip;
} // end of loadClip()
private void getAudioData() {
if (format.getSampleSizeInBits() == 16) {
nlengthInSamples = audioBytes.length / 2;
audioData = new int[nlengthInSamples];
if (format.isBigEndian()) {
for (int i = 0; i < nlengthInSamples; i++) {
// First byte is MSB (high order)
int MSB = (int) audioBytes[2 * i];
// Second byte is LSB (low order)
int LSB = (int) audioBytes[2 * i + 1];
audioData[i] = MSB << 8 | (255 & LSB);
}
} else {
for (int i = 0; i < nlengthInSamples; i++) {
// First byte is LSB (low order)
int LSB = (int) audioBytes[2 * i];
// Second byte is MSB (high order)
int MSB = (int) audioBytes[2 * i + 1];
audioData[i] = MSB << 8 | (255 & LSB);
}
}
} else {
if (format.getSampleSizeInBits() == 8) {
nlengthInSamples = audioBytes.length;
audioData = new int[nlengthInSamples];
if (format.getEncoding().toString().startsWith("PCM_SIGN")) {
for (int i = 0; i < audioBytes.length; i++) {
audioData[i] = audioBytes[i];
}
} else {
for (int i = 0; i < audioBytes.length; i++) {
audioData[i] = audioBytes[i] - 128;
}
}
}
}
}
public boolean load(File file) {
this.file = file;
if (file != null && file.isFile()) {
try {
errStr = null;
audioInputStream = AudioSystem.getAudioInputStream(file);
fileName = file.getName();
format = audioInputStream.getFormat();
} catch (Exception ex) {
reportStatus(ex.toString());
return false;
}
} else {
reportStatus("Audio file required.");
return false;
}
numChannels = format.getChannels();
sampleRate = (double) format.getSampleRate();
sampleBitSize = format.getSampleSizeInBits();
long frameLength = audioInputStream.getFrameLength();
long milliseconds = (long) ((frameLength * 1000) / audioInputStream.getFormat().getFrameRate());
double audioFileDuration = milliseconds / 1000.0;
if (audioFileDuration > MAX_AUDIO_DURATION) duration = MAX_AUDIO_DURATION;
else duration = audioFileDuration;
frameLength = (int) Math.floor((duration / audioFileDuration) * (double) frameLength);
try {
audioBytes = new byte[(int) frameLength * format.getFrameSize()];
audioInputStream.read(audioBytes);
} catch (Exception ex) {
reportStatus(ex.toString());
return false;
}
getAudioData();
return true;
}