/** Gets the correct codec from the camera */
public Codec fetchCodec(Format inFormat, Format outFormat) {
Vector codecs = PlugInManager.getPlugInList(inFormat, outFormat, PlugInManager.CODEC);
if (codecs == null) return null;
for (int i = 0; i < codecs.size(); i++) {
Codec codec = null;
try {
Class codecClass = Class.forName((String) codecs.elementAt(i));
if (codecClass != null) codec = (Codec) codecClass.newInstance();
} catch (Exception e) {
continue;
}
if (codec == null || codec.setInputFormat(inFormat) == null) continue;
Format[] outFormats = codec.getSupportedOutputFormats(inFormat);
if (outFormats == null) continue;
for (int j = 0; j < outFormats.length; j++) {
if (outFormats[j].matches(outFormat)) {
try {
codec.setOutputFormat(outFormats[j]);
codec.open();
return codec;
} catch (Exception e) {
}
}
}
}
return null;
}
/**
* Open the plugin. Must be called after the formats have been determined and before "process" is
* called.
*
* <p>Open the DataLine.
*/
public void open() throws ResourceUnavailableException {
javax.sound.sampled.AudioFormat audioFormat = convertFormat(inputFormat);
logger.info("opening with javax.sound format: " + audioFormat);
try {
if (!inputFormat.getEncoding().equals(AudioFormat.LINEAR)) {
logger.info("JavaSoundRenderer: Audio format is not linear, creating conversion");
if (inputFormat.getEncoding().equals(AudioFormat.ULAW))
codec =
new net.sf.fmj.media.codec.audio.ulaw
.Decoder(); // much more efficient than JavaSoundCodec
else if (inputFormat.getEncoding().equals(AudioFormat.ALAW))
codec =
new net.sf.fmj.media.codec.audio.alaw
.Decoder(); // much more efficient than JavaSoundCodec
else
throw new ResourceUnavailableException(
"Unsupported input format encoding: " + inputFormat.getEncoding());
// codec = new net.sf.fmj.media.codec.JavaSoundCodec();
codec.setInputFormat(inputFormat);
final Format[] outputFormats = codec.getSupportedOutputFormats(inputFormat);
if (outputFormats.length < 1)
throw new ResourceUnavailableException(
"Unable to get an output format for input format: " + inputFormat);
final AudioFormat codecOutputFormat =
(AudioFormat) outputFormats[0]; // TODO: choose the best quality one.
codec.setOutputFormat(codecOutputFormat);
audioFormat = convertFormat(codecOutputFormat);
codec.open();
logger.info(
"JavaSoundRenderer: Audio format is not linear, created conversion from "
+ inputFormat
+ " to "
+ codecOutputFormat);
}
sourceLine = getSourceDataLine(audioFormat);
sourceLine.open(audioFormat);
{
FloatControl gainFloatControl = null;
BooleanControl muteBooleanControl = null;
try {
gainFloatControl = (FloatControl) sourceLine.getControl(FloatControl.Type.MASTER_GAIN);
} catch (Exception e) {
e.printStackTrace();
}
try {
muteBooleanControl = (BooleanControl) sourceLine.getControl(BooleanControl.Type.MUTE);
} catch (Exception e) {
e.printStackTrace();
}
// TODO add other controls
JavaSoundGainControl gainControl =
new JavaSoundGainControl(gainFloatControl, muteBooleanControl);
controls.addControl(gainControl);
}
logControls(sourceLine.getControls());
} catch (LineUnavailableException e) {
throw new ResourceUnavailableException(e.getMessage());
}
}