/** Signals that a PooledThread has started. Creates the Thread's line and buffer. */
protected void threadStarted() {
// wait for the SoundManager constructor to finish
synchronized (this) {
try {
wait();
} catch (InterruptedException ex) {
}
}
// use a short, 100ms (1/10th sec) buffer for filters that
// change in real-time
int bufferSize =
playbackFormat.getFrameSize() * Math.round(playbackFormat.getSampleRate() / 10);
// create, open, and start the line
SourceDataLine line;
DataLine.Info lineInfo = new DataLine.Info(SourceDataLine.class, playbackFormat);
try {
line = (SourceDataLine) AudioSystem.getLine(lineInfo);
line.open(playbackFormat, bufferSize);
} catch (LineUnavailableException ex) {
// the line is unavailable - signal to end this thread
Thread.currentThread().interrupt();
return;
}
line.start();
// create the buffer
byte[] buffer = new byte[bufferSize];
// set this thread's locals
localLine.set(line);
localBuffer.set(buffer);
}
/**
* Sells a specified number of records Throws an exception if the record doesn't exist in the
* store or if trying to sell more records than exist in the inventory
*
* @param record - the record to sell
* @param quantity - the number of records to sell
*/
public void sellItem(AudioFormat record, int quantity)
throws NullPointerException, IllegalArgumentException {
// System.out.println("Selling: " + record.toString() + ", quantity: " + quantity);
InventoryItem item = null;
for (int i = 0; i < this.listOfItems.length; i++) {
item = this.listOfItems[i];
// If it finds the record, break out of the loop
if (record.equals(item.getRecord())) {
break;
}
}
// Handle the record not being in the inventory
if (item == null) {
throw new NullPointerException(
"Error: there is no record of this type in stock "
+ "(record does not exist within the array).");
}
// Handle selling more items than the store has
if (item.getQuantity() - quantity < 0) {
throw new IllegalArgumentException(
"Error: you cannot sell more records than you have "
+ "(# of records sold makes quantity smaller than 0).");
}
item.setQuantity(item.getQuantity() - quantity);
}
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;
}
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 static WAVData readFromStream(AudioInputStream aIn)
throws UnsupportedAudioFileException, IOException {
ReadableByteChannel aChannel = Channels.newChannel(aIn);
AudioFormat fmt = aIn.getFormat();
int numChannels = fmt.getChannels();
int bits = fmt.getSampleSizeInBits();
int format = AL_FORMAT_MONO8;
if ((bits == 8) && (numChannels == 1)) {
format = AL_FORMAT_MONO8;
} else if ((bits == 16) && (numChannels == 1)) {
format = AL_FORMAT_MONO16;
} else if ((bits == 8) && (numChannels == 2)) {
format = AL_FORMAT_STEREO8;
} else if ((bits == 16) && (numChannels == 2)) {
format = AL_FORMAT_STEREO16;
}
int freq = Math.round(fmt.getSampleRate());
int size = aIn.available();
ByteBuffer buffer = ByteBuffer.allocateDirect(size);
while (buffer.remaining() > 0) {
aChannel.read(buffer);
}
buffer.rewind();
// Must byte swap on big endian platforms
// Thanks to swpalmer on javagaming.org forums for hint at fix
if ((bits == 16) && (ByteOrder.nativeOrder() == ByteOrder.BIG_ENDIAN)) {
int len = buffer.remaining();
for (int i = 0; i < len; i += 2) {
byte a = buffer.get(i);
byte b = buffer.get(i + 1);
buffer.put(i, b);
buffer.put(i + 1, a);
}
}
WAVData result = new WAVData(buffer, format, size, freq, false);
aIn.close();
return result;
}
// 播放au,aiff,wav音乐流, 这个函数基本完全为帖子上的代码
private synchronized void play() {
ByteArrayInputStream aMusicInputStream;
AudioFormat format;
AudioInputStream musicInputStream;
byte[] audioSamples;
SourceDataLine line;
try {
File MusicFile = new File(m_filename);
musicInputStream = AudioSystem.getAudioInputStream(MusicFile); // 取得文件的音频输入流
format = musicInputStream.getFormat(); // 取得音频输入流的格式
audioSamples = getAudioSamples(musicInputStream, format); // 取得音频样本
aMusicInputStream = new ByteArrayInputStream(audioSamples);
int bufferSize = format.getFrameSize() * Math.round(format.getSampleRate() / 10);
byte[] buffer = new byte[bufferSize];
try {
DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);
line = (SourceDataLine) AudioSystem.getLine(info);
line.open(format, bufferSize);
} catch (LineUnavailableException e) {
e.printStackTrace();
return;
}
if (!line.isRunning()) {
line.start();
}
int numBytesRead = 0;
while (numBytesRead != -1 && !m_stopped) {
numBytesRead = aMusicInputStream.read(buffer, 0, buffer.length);
if (numBytesRead != -1) {
line.write(buffer, 0, numBytesRead);
}
}
line.drain();
line.close();
} catch (Exception e) {
e.printStackTrace();
}
}
// 取得音频样本
private byte[] getAudioSamples(AudioInputStream MusicStream, AudioFormat format) {
int AudioSampleLengh = (int) (MusicStream.getFrameLength() * format.getFrameSize());
byte aAudioSamples[] = new byte[AudioSampleLengh];
DataInputStream dataInputStream = new DataInputStream(MusicStream);
try {
dataInputStream.readFully(aAudioSamples);
} catch (Exception e) {
e.printStackTrace();
}
return aAudioSamples;
}
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;
}
}
}
}
}
private void soundAbspielen(File sound) {
if (!läuft) return;
try {
audioInputStream = AudioSystem.getAudioInputStream(sound);
af = audioInputStream.getFormat();
size = (int) (af.getFrameSize() * audioInputStream.getFrameLength());
audio = new byte[size];
info = new DataLine.Info(Clip.class, af, size);
audioInputStream.read(audio, 0, size);
clip = (Clip) AudioSystem.getLine(info);
clip.open(af, audio, 0, size);
clip.start();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* Adds a specified number of records to the inventory and updates the price
*
* @param record - the record to add
* @param quantity - the number of records to add
* @param price - the price to sell the record at
*/
public void addItem(AudioFormat record, int quantity, double price) {
// System.out.println("Adding: " + record.toString() + ", quantity: " + quantity + ", price: " +
// price);
for (int i = 0; i < this.listOfItems.length; i++) {
InventoryItem item = this.listOfItems[i];
// If the record is found, set the price and add the quantity and end the method
if (record.equals(item.getRecord())) {
item.setPrice(price);
item.setQuantity(item.getQuantity() + quantity);
return;
}
}
// If it's an entirely new record, duplicates the old array and increases its size by 1
InventoryItem[] temp = new InventoryItem[this.listOfItems.length + 1];
for (int i = 0; i < this.listOfItems.length; i++) {
temp[i] = this.listOfItems[i];
}
this.listOfItems = temp;
// Adds the new record to the end of the array
this.listOfItems[this.listOfItems.length - 1] = new InventoryItem(record, quantity, price);
}
public static void main(String[] args) throws Exception {
int midiDev = -1;
int audioDev = -1;
int latencyInMillis = 70;
// parse arguments
int argi = 0;
while (argi < args.length) {
String arg = args[argi];
if (arg.equals("-h")) {
printUsageAndExit();
} else if (arg.equals("-m")) {
argi++;
if (argi >= args.length) {
printUsageAndExit();
}
midiDev = Integer.parseInt(args[argi]);
} else if (arg.equals("-a")) {
argi++;
if (argi >= args.length) {
printUsageAndExit();
}
audioDev = Integer.parseInt(args[argi]);
} else if (arg.equals("-l")) {
argi++;
if (argi >= args.length) {
printUsageAndExit();
}
latencyInMillis = Integer.parseInt(args[argi]);
} else {
printUsageAndExit();
}
argi++;
}
// load samples
final AudioFileSource[] src = new AudioFileSource[sounds.length];
for (int i = 0; i < sounds.length; i++) {
src[i] = new AudioFileSource(new File(sounds[i]));
}
// define the first source's audioformat as the master format
final AudioFormat format = src[0].getFormat();
// set up mixer
final AudioMixer mixer = new AudioMixer(format.getChannels(), format.getSampleRate());
// set up soundcard (sink)
SoundcardSink sink = new SoundcardSink();
// open the sink and connect it with the mixer
sink.open(audioDev, latencyInMillis, format, mixer);
try {
// do we want to open a MIDI port?
MidiIn midi = null;
if (midiDev >= 0) {
// start MIDI IN
midi = new MidiIn();
midi.setListener(
new MidiIn.Listener() {
public void midiInPlayed(int status, int data1, int data2) {
// only react to NOTE ON messages with velocity > 0
if (((status & 0xF0) == 0x90) && (data2 > 0)) {
AudioFileSource newSrc = src[data1 % src.length].makeClone();
mixer.addAudioStream(newSrc);
serviceMixer(mixer);
}
}
public void midiInPlayed(byte[] message) {
// nothing to do for long MIDI messages
}
});
midi.open(midiDev);
} else {
Debug.debug("No MIDI.");
}
try {
// start the sink -- from now on, the mixer is polled for new
// data
sink.start();
System.out.println("Press ENTER for a sound, 'q'+ENTER to quit.");
int currSrc = 0;
while (true) {
char c = (char) System.in.read();
if (c == 'q') {
break;
}
AudioFileSource newSrc = src[(currSrc++) % src.length].makeClone();
mixer.addAudioStream(newSrc);
serviceMixer(mixer);
}
} finally {
// clean-up
if (midi != null) {
midi.close();
}
}
} finally {
sink.close();
}
Debug.debug("done");
}