| Methods Summary |
|---|
| public int | bufferAvailable()
return dataLine.available();
|
| public static javax.media.format.AudioFormat | convertFormat(javax.sound.sampled.AudioFormat fmt)Convert a JavaSound format to a JMF format.
Encoding type = fmt.getEncoding();
String encoding;
if (type == Encoding.PCM_SIGNED ||
type == Encoding.PCM_UNSIGNED)
encoding = javax.media.format.AudioFormat.LINEAR;
else if (type == Encoding.ALAW)
encoding = javax.media.format.AudioFormat.ALAW;
else if (type == Encoding.ULAW)
encoding = javax.media.format.AudioFormat.ULAW;
else
encoding = null;
return new javax.media.format.AudioFormat(
encoding,
fmt.getSampleRate(),
fmt.getSampleSizeInBits(),
fmt.getChannels(),
(fmt.isBigEndian() ?
javax.media.format.AudioFormat.BIG_ENDIAN :
javax.media.format.AudioFormat.LITTLE_ENDIAN),
(type == Encoding.PCM_SIGNED ?
javax.media.format.AudioFormat.SIGNED :
javax.media.format.AudioFormat.UNSIGNED));
|
| public static javax.sound.sampled.AudioFormat | convertFormat(javax.media.format.AudioFormat fmt)Convert a JMF format to a JavaSound format.
return new javax.sound.sampled.AudioFormat(
(fmt.getSampleRate() ==
javax.media.format.AudioFormat.NOT_SPECIFIED ?
8000f : (float)fmt.getSampleRate()),
(fmt.getSampleSizeInBits() ==
javax.media.format.AudioFormat.NOT_SPECIFIED ?
16 : fmt.getSampleSizeInBits()),
(fmt.getChannels() ==
javax.media.format.AudioFormat.NOT_SPECIFIED ?
1 : fmt.getChannels()),
(fmt.getSigned() ==
javax.media.format.AudioFormat.SIGNED ?
true : false),
(fmt.getEndian() ==
javax.media.format.AudioFormat.BIG_ENDIAN ?
true : false));
|
| public void | dispose()
dataLine.close();
|
| public void | drain()
dataLine.drain();
|
| public void | finalize()
super.finalize();
dispose();
|
| public void | flush()
dataLine.flush();
|
| public javax.media.format.AudioFormat | getFormat()
return format;
|
| public double | getGain()
return (gc != null ? gc.getValue() : 0);
|
| public long | getMediaNanoseconds()
if (dataLine == null || format == null)
return 0;
long pos = dataLine.getFramePosition();
if (pos < lastPos) {
// Wraps around.
totalCount += lastPos - originPos;
originPos = pos;
}
lastPos = pos;
return (long)(((totalCount + pos - originPos) * 1000 / format.getSampleRate()) * 1000000);
|
| public boolean | getMute()
return (mc != null ? mc.getValue() : false);
|
| public float | getRate()
if (rc == null)
return 1.0f;
return (float)(rc.getValue() / format.getSampleRate());
|
| public boolean | initialize(javax.media.format.AudioFormat format, int bufSize)
synchronized (initSync) {
DataLine.Info info;
javax.sound.sampled.AudioFormat afmt;
afmt = convertFormat(format);
//System.err.println("Render buffer size = " + bufSize);
info = new DataLine.Info(SourceDataLine.class, afmt, bufSize);
try {
if (!AudioSystem.isLineSupported(info)) {
Log.warning("DataLine not supported: " + format);
return false;
}
dataLine = (SourceDataLine)AudioSystem.getLine(info);
dataLine.open(afmt, bufSize);
} catch (Exception e) {
Log.warning("Cannot open audio device: " + e);
return false;
}
this.format = format;
this.bufSize = bufSize;
if (dataLine == null) {
Log.warning("JavaSound unsupported format: " + format);
return false;
}
try {
gc = (FloatControl)dataLine.getControl(FloatControl.Type.MASTER_GAIN);
mc = (BooleanControl)dataLine.getControl(BooleanControl.Type.MUTE);
} catch (Exception e) {
Log.warning("JavaSound: No gain control");
}
try {
rc = (FloatControl)dataLine.getControl(FloatControl.Type.SAMPLE_RATE);
} catch (Exception e) {
Log.warning("JavaSound: No rate control");
}
return true;
}
|
| public static boolean | isOpen()
Mixer mixer = AudioSystem.getMixer(null);
Line lines[] = mixer.getSourceLines();
return (lines != null && lines.length > 0);
|
| public void | pause()
if (dataLine != null)
dataLine.stop();
paused = true;
|
| public void | resume()
if (dataLine != null)
dataLine.start();
paused = false;
|
| public void | setGain(double g)
if (gc != null)
gc.setValue((float)g);
|
| public void | setMute(boolean m)
if (mc != null)
mc.setValue(m);
|
| public float | setRate(float r)
if (rc == null)
return 1.0f;
float rate = (float)(r * format.getSampleRate());
if (rate > rc.getMaximum() || rate < rc.getMinimum())
return getRate();
rc.setValue(rate);
return r;
|
| public int | write(byte[] data, int off, int len)
return dataLine.write(data, off, len);
|
