UlawCodecStream(AudioInputStream stream, AudioFormat outputFormat) {
super(stream, outputFormat, AudioSystem.NOT_SPECIFIED);
AudioFormat inputFormat = stream.getFormat();
// throw an IllegalArgumentException if not ok
if (!(isConversionSupported(outputFormat, inputFormat))) {
throw new IllegalArgumentException(
"Unsupported conversion: " + inputFormat.toString() + " to " + outputFormat.toString());
}
// $$fb 2002-07-18: fix for 4714846: JavaSound ULAW (8-bit) encoder erroneously depends on
// endian-ness
boolean PCMIsBigEndian;
// determine whether we are encoding or decoding
if (AudioFormat.Encoding.ULAW.equals(inputFormat.getEncoding())) {
encode = false;
encodeFormat = inputFormat;
decodeFormat = outputFormat;
PCMIsBigEndian = outputFormat.isBigEndian();
} else {
encode = true;
encodeFormat = outputFormat;
decodeFormat = inputFormat;
PCMIsBigEndian = inputFormat.isBigEndian();
tempBuffer = new byte[tempBufferSize];
}
// setup tables according to byte order
if (PCMIsBigEndian) {
tabByte1 = ULAW_TABH;
tabByte2 = ULAW_TABL;
highByte = 0;
lowByte = 1;
} else {
tabByte1 = ULAW_TABL;
tabByte2 = ULAW_TABH;
highByte = 1;
lowByte = 0;
}
// set the AudioInputStream length in frames if we know it
if (stream instanceof AudioInputStream) {
frameLength = ((AudioInputStream) stream).getFrameLength();
}
// set framePos to zero
framePos = 0;
frameSize = inputFormat.getFrameSize();
if (frameSize == AudioSystem.NOT_SPECIFIED) {
frameSize = 1;
}
}
TargetDataLine getTargetDataLine(AudioFormat format, int bufferSize) {
TargetDataLine line = null;
DataLine.Info info = new DataLine.Info(TargetDataLine.class, format);
if (AudioSystem.isLineSupported(info)) {
try {
if (inputMixer == null) {
line = (TargetDataLine) AudioSystem.getLine(info);
} else {
line = (TargetDataLine) inputMixer.getLine(info);
}
line.open(format, bufferSize * format.getFrameSize());
debug(
"TargetDataLine buffer size is "
+ line.getBufferSize()
+ "\n"
+ "TargetDataLine format is "
+ line.getFormat().toString()
+ "\n"
+ "TargetDataLine info is "
+ line.getLineInfo().toString());
} catch (Exception e) {
error("Error acquiring TargetDataLine: " + e.getMessage());
}
} else {
error("Unable to return a TargetDataLine: unsupported format - " + format.toString());
}
return line;
}
SourceDataLine getSourceDataLine(AudioFormat format, int bufferSize) {
SourceDataLine line = null;
DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);
if (AudioSystem.isLineSupported(info)) {
try {
if (outputMixer == null) {
line = (SourceDataLine) AudioSystem.getLine(info);
} else {
line = (SourceDataLine) outputMixer.getLine(info);
}
// remember that time you spent, like, an entire afternoon fussing
// with this buffer size to try to get the latency decent on Linux?
// Yah, don't fuss with this anymore, ok?
line.open(format, bufferSize * format.getFrameSize() * 4);
if (line.isOpen()) {
debug(
"SourceDataLine is "
+ line.getClass().toString()
+ "\n"
+ "Buffer size is "
+ line.getBufferSize()
+ " bytes.\n"
+ "Format is "
+ line.getFormat().toString()
+ ".");
return line;
}
} catch (LineUnavailableException e) {
error("Couldn't open the line: " + e.getMessage());
}
}
error("Unable to return a SourceDataLine: unsupported format - " + format.toString());
return line;
}
/**
* Sets the InputStream from which this StreamDataSource reads.
*
* @param inputStream the InputStream from which audio data comes
* @param streamName the name of the InputStream
*/
public void setInputStream(AudioInputStream inputStream, String streamName) {
dataStream = inputStream;
streamEndReached = false;
utteranceEndSent = false;
utteranceStarted = false;
AudioFormat format = inputStream.getFormat();
sampleRate = (int) format.getSampleRate();
bigEndian = format.isBigEndian();
String s = format.toString();
logger.finer("input format is " + s);
if (format.getSampleSizeInBits() % 8 != 0)
throw new Error("StreamDataSource: bits per sample must be a multiple of 8.");
bytesPerValue = format.getSampleSizeInBits() / 8;
// test whether all files in the stream have the same format
AudioFormat.Encoding encoding = format.getEncoding();
if (encoding.equals(AudioFormat.Encoding.PCM_SIGNED)) signedData = true;
else if (encoding.equals(AudioFormat.Encoding.PCM_UNSIGNED)) signedData = false;
else throw new RuntimeException("used file encoding is not supported");
totalValuesRead = 0;
}
/**
* Inits a DateLine.<br>
* We check if the line supports Gain and Pan controls.
*
* <p>From the AudioInputStream, i.e. from the sound file, we fetch information about the format
* of the audio data. These information include the sampling frequency, the number of channels and
* the size of the samples. There information are needed to ask JavaSound for a suitable output
* line for this audio file. Furthermore, we have to give JavaSound a hint about how big the
* internal buffer for the line should be. Here, we say AudioSystem.NOT_SPECIFIED, signaling that
* we don't care about the exact size. JavaSound will use some default value for the buffer size.
*/
protected void createLine() throws LineUnavailableException {
log.info("Create Line");
if (m_line == null) {
AudioFormat sourceFormat = m_audioInputStream.getFormat();
log.info("Create Line : Source format : " + sourceFormat.toString());
int nSampleSizeInBits = sourceFormat.getSampleSizeInBits();
if (nSampleSizeInBits <= 0) {
nSampleSizeInBits = 16;
}
if ((sourceFormat.getEncoding() == AudioFormat.Encoding.ULAW)
|| (sourceFormat.getEncoding() == AudioFormat.Encoding.ALAW)) {
nSampleSizeInBits = 16;
}
if (nSampleSizeInBits != 8) {
nSampleSizeInBits = 16;
}
AudioFormat targetFormat =
new AudioFormat(
AudioFormat.Encoding.PCM_SIGNED,
sourceFormat.getSampleRate(),
nSampleSizeInBits,
sourceFormat.getChannels(),
sourceFormat.getChannels() * (nSampleSizeInBits / 8),
sourceFormat.getSampleRate(),
false);
log.info("Create Line : Target format: " + targetFormat);
// Keep a reference on encoded stream to progress notification.
m_encodedaudioInputStream = m_audioInputStream;
try {
// Get total length in bytes of the encoded stream.
encodedLength = m_encodedaudioInputStream.available();
} catch (IOException e) {
log.log(Level.SEVERE, "Cannot get m_encodedaudioInputStream.available()", e);
}
// Create decoded stream.
m_audioInputStream = AudioSystem.getAudioInputStream(targetFormat, m_audioInputStream);
AudioFormat audioFormat = m_audioInputStream.getFormat();
DataLine.Info info = new DataLine.Info(SourceDataLine.class, audioFormat, -1);
Mixer mixer = getMixer(m_mixerName);
if (mixer != null) {
log.info("Mixer : " + mixer.getMixerInfo().toString());
m_line = (SourceDataLine) mixer.getLine(info);
} else {
m_line = (SourceDataLine) AudioSystem.getLine(info);
m_mixerName = null;
}
log.info("Line : " + m_line.toString());
log.info("Line Info : " + m_line.getLineInfo().toString());
log.info("Line AudioFormat: " + m_line.getFormat().toString());
}
}
public static final ALoad create(File f) throws AudioException {
try {
// stream
AudioInputStream ais = AudioSystem.getAudioInputStream(f);
// make difference between encoded and non-encoded streams, because mp3
// doesn't give streamlength information :-(
boolean isEncoded =
!ais.getFormat().getEncoding().equals(AudioFormat.Encoding.PCM_UNSIGNED)
&& !ais.getFormat().getEncoding().equals(AudioFormat.Encoding.PCM_SIGNED)
&& !ais.getFormat().getEncoding().equals(AudioFormat.Encoding.ALAW)
&& !ais.getFormat().getEncoding().equals(AudioFormat.Encoding.ULAW);
AudioFormat.Encoding targetEncoding = AudioFormat.Encoding.PCM_SIGNED;
if (isEncoded) {
ais = AudioSystem.getAudioInputStream(targetEncoding, ais); // this is required for mp3
}
AudioFormat af = ais.getFormat();
// count size...
int sl = 0;
if (isEncoded)
// if (false)
{
int st = 0;
byte a[] = new byte[4096];
try {
while ((st = ais.read(a, 0, a.length - 1)) >= 0) {
sl += st;
}
sl /= ais.getFormat().getChannels() * ais.getFormat().getSampleSizeInBits() / 8;
} catch (IOException ioe) {
ioe.printStackTrace();
}
} else {
sl =
(int)
(ais.getFrameLength()
* af.getFrameSize()
/ af.getChannels()
/ (af.getSampleSizeInBits() >> 3));
}
// stream for data loading
ais = AudioSystem.getAudioInputStream(f);
targetEncoding = AudioFormat.Encoding.PCM_SIGNED;
if (isEncoded) {
ais = AudioSystem.getAudioInputStream(targetEncoding, ais); // this is required for mp3
}
af = ais.getFormat();
Debug.println(3, "audioformat = " + af.toString());
// search the correct loader...
for (int i = 0; i < classList.size(); i++) {
ALoad l = classList.get(i);
if (l.supports(af)) {
l = l.duplicate();
l.setAudioInputStream(ais, sl);
l.setFile(f);
return l;
}
}
Debug.println(3, "unsupported audioformat = " + af.toString());
throw new AudioException("unsupportedAudioFormat");
} catch (UnsupportedAudioFileException uafe) {
Debug.printStackTrace(5, uafe);
throw new AudioException("unsupportedAudioFormat");
} catch (IOException ioe) {
Debug.printStackTrace(5, ioe);
throw new AudioException("unsupportedAudioFormat");
}
}
