protected int writeConv(byte[] data, int ofs, int len) {
double grad = (double) INPUT_RATE / format.getRate();
int length = 0;
if (format.getBits() == 8 && format.getChannels() == 1) length = mono8(data, ofs, len, grad);
else if (format.getBits() == 8 && format.getChannels() == 2)
length = stereo8(data, ofs, len, grad);
else if (format.getBits() == 16 && format.getChannels() == 1)
length = mono16(data, ofs, len, grad);
else if (format.getBits() == 16 && format.getChannels() == 2)
length = stereo16(data, ofs, len, grad);
return length;
}
public int write(byte[] data, int ofs, int len) {
int maxTries = 10;
int totWrite = 0;
int nofs = ofs, nlen = len;
while (nofs < ofs + len && maxTries > 0) {
int written = 0;
if (format.getBits() == 16 && format.getChannels() == 2 && format.getRate() == INPUT_RATE)
written = sdl.write(data, nofs, nlen);
else written = writeConv(data, nofs, nlen);
nofs += written;
nlen -= written;
totWrite += written;
maxTries--;
deliveredData += written;
// calculations when channels and bits and rate varies...
// int divisor = (format.getBits() / 8) * format.getChannels();
// int deliveredTime =
// (int) (1000 * deliveredData / (format.getRate() * divisor));
int deliveredTime = (int) (1000 * deliveredData / (INPUT_RATE * 4));
long pos = sdl.getMicrosecondPosition() / 1000;
long sleepTime = deliveredTime - pos - bufferTime;
if (sleepTime < 0) sleepTime = 0;
try {
Thread.sleep(sleepTime);
} catch (InterruptedException e) {
}
}
return totWrite;
}
public boolean supports(SoundDataFormat format) {
boolean rateSupported = false;
int rate = format.getRate();
for (int n = 0; n < supportedRates.length; n++)
if (supportedRates[n] == rate) rateSupported = true;
boolean bitsSupported = false;
int bits = format.getBits();
for (int n = 0; n < supportedBits.length; n++)
if (supportedBits[n] == bits) bitsSupported = true;
boolean channelsSupported = false;
int channels = format.getChannels();
for (int n = 0; n < supportedChannels.length; n++)
if (supportedChannels[n] == channels) channelsSupported = true;
return rateSupported && bitsSupported && channelsSupported;
}
private void init() throws PlayerException {
if (!supports(format)) throw new PlayerException("data format not supported: " + format);
af =
new AudioFormat(
format.getRate(), format.getBits(), format.getChannels(), signed, bigendian);
DataLine.Info dli = new DataLine.Info(SourceDataLine.class, af);
if (AudioSystem.isLineSupported(dli)) {
Line l = null;
try {
l = AudioSystem.getLine(dli);
} catch (LineUnavailableException e) {
throw new PlayerException("Can't get line", e);
}
if (!(l instanceof SourceDataLine)) throw new PlayerException("line not a SourceDataLine!");
sdl = (SourceDataLine) l;
} else throw new PlayerException("Line not supported");
if (sdl == null) throw new PlayerException("line not found");
}