/**
* Obtains an audio input stream of the indicated encoding, by converting the provided audio input
* stream.
*
* @param targetEncoding the desired encoding after conversion
* @param sourceStream the stream to be converted
* @return an audio input stream of the indicated encoding
* @throws IllegalArgumentException if the conversion is not supported
* @see #getTargetEncodings(AudioFormat.Encoding)
* @see #getTargetEncodings(AudioFormat)
* @see #isConversionSupported(AudioFormat.Encoding, AudioFormat)
* @see #getAudioInputStream(AudioFormat, AudioInputStream)
*/
public static AudioInputStream getAudioInputStream(
AudioFormat.Encoding targetEncoding, AudioInputStream sourceStream) {
// TODO: this
// List codecs = getFormatConversionProviders();
//
// for(int i = 0; i < codecs.size(); i++) {
// FormatConversionProvider codec = (FormatConversionProvider) codecs.get(i);
// if( codec.isConversionSupported( targetEncoding, sourceStream.getFormat() ) ) {
// return codec.getAudioInputStream( targetEncoding, sourceStream );
// }
// }
// we ran out of options, throw an exception
throw new IllegalArgumentException(
"Unsupported conversion: " + targetEncoding + " from " + sourceStream.getFormat());
}
public DataPusher(SourceDataLine sourceLine, AudioInputStream ais) {
this.ais = ais;
this.format = ais.getFormat();
this.source = sourceLine;
}
/** Write data to the source data line. */
public void run() {
byte[] buffer = null;
boolean useStream = (ais != null);
if (useStream) {
buffer = new byte[BUFFER_SIZE];
} else {
buffer = audioData;
}
while (wantedState != STATE_STOPPING) {
// try {
if (wantedState == STATE_WAITING) {
// wait for 5 seconds - maybe the clip is to be played again
if (DEBUG || Printer.debug) Printer.debug("DataPusher.run(): waiting 5 seconds");
try {
synchronized (this) {
threadState = STATE_WAITING;
wantedState = STATE_STOPPING;
wait(AUTO_CLOSE_TIME);
}
} catch (InterruptedException ie) {
}
if (DEBUG || Printer.debug) Printer.debug("DataPusher.run(): waiting finished");
continue;
}
if (newPos >= 0) {
pos = newPos;
newPos = -1;
}
threadState = STATE_PLAYING;
int toWrite = BUFFER_SIZE;
if (useStream) {
try {
pos = 0; // always write from beginning of buffer
// don't use read(byte[]), because some streams
// may not override that method
toWrite = ais.read(buffer, 0, buffer.length);
} catch (java.io.IOException ioe) {
// end of stream
toWrite = -1;
}
} else {
if (toWrite > audioDataByteLength - pos) {
toWrite = audioDataByteLength - pos;
}
if (toWrite == 0) {
toWrite = -1; // end of "stream"
}
}
if (toWrite < 0) {
if (DEBUG || Printer.debug) Printer.debug("DataPusher.run(): Found end of stream");
if (!useStream && looping) {
if (DEBUG || Printer.debug) Printer.debug("DataPusher.run(): setting pos back to 0");
pos = 0;
continue;
}
if (DEBUG || Printer.debug) Printer.debug("DataPusher.run(): calling drain()");
wantedState = STATE_WAITING;
source.drain();
continue;
}
if (DEBUG || Printer.debug)
Printer.debug("> DataPusher.run(): Writing " + toWrite + " bytes");
int bytesWritten = source.write(buffer, pos, toWrite);
pos += bytesWritten;
if (DEBUG || Printer.debug)
Printer.debug("< DataPusher.run(): Wrote " + bytesWritten + " bytes");
}
threadState = STATE_STOPPING;
if (DEBUG || Printer.debug) Printer.debug("DataPusher: closing device");
if (Printer.trace) Printer.trace("DataPusher: source.flush()");
source.flush();
if (DEBUG || Printer.trace) Printer.trace("DataPusher: source.stop()");
source.stop();
if (DEBUG || Printer.trace) Printer.trace("DataPusher: source.flush()");
source.flush();
if (DEBUG || Printer.trace) Printer.trace("DataPusher: source.close()");
source.close();
threadState = STATE_STOPPED;
synchronized (this) {
pushThread = null;
notifyAll();
}
if (DEBUG || Printer.debug) Printer.debug("DataPusher:end of thread");
}
