public Format[] getSupportedOutputFormats(Format in) {
if (in == null) return new Format[] {new AudioFormat(AudioFormat.ULAW)};
if (matches(in, inputFormats) == null) return new Format[1];
if (!(in instanceof AudioFormat)) return new Format[] {new AudioFormat(AudioFormat.ULAW)};
AudioFormat af = (AudioFormat) in;
return new Format[] {
new AudioFormat(
AudioFormat.ULAW, af.getSampleRate(), af.getSampleSizeInBits(), af.getChannels())
};
}
protected Format[] getMatchingOutputFormats(Format in) {
AudioFormat af = (AudioFormat) in;
supportedOutputFormats =
new AudioFormat[] {
new AudioFormat(
Constants.ALAW_RTP,
af.getSampleRate(),
8,
1,
Format.NOT_SPECIFIED,
Format.NOT_SPECIFIED,
8,
Format.NOT_SPECIFIED,
Format.byteArray)
};
return supportedOutputFormats;
}
@Override
public void read(Buffer buffer) throws IOException {
pbs.read(buffer);
// Remap the time stamps so it won't wrap around
// while changing to a new file.
if (buffer.getTimeStamp() != Buffer.TIME_UNKNOWN) {
long diff = buffer.getTimeStamp() - lastTS;
lastTS = buffer.getTimeStamp();
if (diff > 0) timeStamp += diff;
buffer.setTimeStamp(timeStamp);
}
// If this track is to be used as the master time base,
// we'll need to compute the master time based on this track.
if (useAsMaster) {
if (buffer.getFormat() instanceof AudioFormat) {
AudioFormat af = (AudioFormat) buffer.getFormat();
masterAudioLen += buffer.getLength();
long t = af.computeDuration(masterAudioLen);
if (t > 0) {
masterTime = t;
} else {
masterTime = buffer.getTimeStamp();
}
} else {
masterTime = buffer.getTimeStamp();
}
}
if (buffer.isEOM()) {
tInfo.done = true;
if (!ds.handleEOM(tInfo)) {
// This is not the last processor to be done.
// We'll need to un-set the EOM flag.
buffer.setEOM(false);
buffer.setDiscard(true);
}
}
}
@Override
public Format[] getSupportedOutputFormats(Format input) {
if (input == null) return outputFormats;
else {
if (!(input instanceof AudioFormat)) {
logger.warning(
this.getClass().getSimpleName()
+ ".getSupportedOutputFormats: input format does not match, returning format array of {null} for "
+ input); // this can cause an NPE in JMF if it ever
// happens.
return new Format[] {null};
}
final AudioFormat inputCast = (AudioFormat) input;
if (!inputCast.getEncoding().equals(AudioFormat.ALAW)
|| (inputCast.getSampleSizeInBits() != 8
&& inputCast.getSampleSizeInBits() != Format.NOT_SPECIFIED)
|| (inputCast.getChannels() != 1 && inputCast.getChannels() != Format.NOT_SPECIFIED)
|| (inputCast.getFrameSizeInBits() != 8
&& inputCast.getFrameSizeInBits() != Format.NOT_SPECIFIED)) {
logger.warning(
this.getClass().getSimpleName()
+ ".getSupportedOutputFormats: input format does not match, returning format array of {null} for "
+ input); // this can cause an NPE in JMF if it ever
// happens.
return new Format[] {null};
}
final AudioFormat result =
new AudioFormat(
BonusAudioFormatEncodings.ALAW_RTP,
inputCast.getSampleRate(),
8,
1,
inputCast.getEndian(),
inputCast.getSigned(),
8,
inputCast.getFrameRate(),
inputCast.getDataType());
return new Format[] {result};
}
}