@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};
}
}
public static javax.sound.sampled.AudioFormat convertFormat(AudioFormat format) {
String encodingString = format.getEncoding();
int channels = format.getChannels();
double frameRate = format.getFrameRate();
int frameSize = format.getFrameSizeInBits() / 8;
double sampleRate = format.getSampleRate();
int sampleSize = format.getSampleSizeInBits();
boolean endian = (format.getEndian() == AudioFormat.BIG_ENDIAN);
int signed = format.getSigned();
Encoding encoding;
if (AudioFormat.LINEAR.equals(encodingString)) {
switch (signed) {
case AudioFormat.SIGNED:
encoding = Encoding.PCM_SIGNED;
break;
case AudioFormat.UNSIGNED:
encoding = Encoding.PCM_UNSIGNED;
break;
default:
encoding = Encoding.PCM_SIGNED; // TODO: return null
}
} else if (AudioFormat.ALAW.equals(encodingString)) {
encoding = Encoding.ALAW;
} else if (AudioFormat.ULAW.equals(encodingString)) {
encoding = Encoding.ULAW;
} else if (toMpegEncoding(encodingString) != null) {
encoding = toMpegEncoding(encodingString);
} else if (toVorbisEncoding(encodingString) != null) {
encoding = toVorbisEncoding(encodingString);
} else {
encoding = new CustomEncoding(encodingString);
}
final javax.sound.sampled.AudioFormat sampledFormat;
if (encoding == Encoding.PCM_SIGNED) {
sampledFormat =
new javax.sound.sampled.AudioFormat(
(float) sampleRate, sampleSize, channels, true, endian);
} else if (encoding == Encoding.PCM_UNSIGNED) {
sampledFormat =
new javax.sound.sampled.AudioFormat(
(float) sampleRate, sampleSize, channels, false, endian);
} else if (encoding instanceof MpegEncoding) {
// TODO: perhaps we should use reflection to avoid class not found problems if javazoom is not
// in the classpath.
return new MpegAudioFormat(
encoding,
(float) sampleRate,
sampleSize,
channels,
// signed,
frameSize,
(float) frameRate,
endian,
new HashMap());
} else if (encoding instanceof VorbisEncoding) {
// TODO: perhaps we should use reflection to avoid class not found problems if javazoom is not
// in the classpath.
return new VorbisAudioFormat(
encoding,
(float) sampleRate,
sampleSize,
channels,
// signed,
frameSize,
(float) frameRate,
endian,
new HashMap());
} else {
sampledFormat =
new javax.sound.sampled.AudioFormat(
encoding,
(float) sampleRate,
sampleSize,
channels,
frameSize,
(float) frameRate,
endian);
}
return sampledFormat;
}
