| Methods Summary |
|---|
| public synchronized void | close()
rtpdp = null;
super.close();
|
| public void | finalize()
close();
|
| protected javax.media.Format | getInputFormat()
return inputFormat;
|
| public java.lang.String | getName()
return "JPEG DePacketizer";
|
| protected javax.media.Format | getOutputFormat()
return outputFormat;
|
| public javax.media.Format[] | getSupportedOutputFormats(javax.media.Format in)
if (in == null)
return outputFormats;
// Make sure the input is JPEG video format
if (matches(in, inputFormats) == null)
return new Format[0];
Format out [] = new Format[1];
out[0] = makeJPEGFormat(in);
return out;
|
| private final javax.media.format.JPEGFormat | makeJPEGFormat(javax.media.Format in)
VideoFormat vf = (VideoFormat)in;
return new JPEGFormat((vf.getSize() != null ? vf.getSize() :
new Dimension(DEFAULT_WIDTH, DEFAULT_HEIGHT)),
VideoFormat.NOT_SPECIFIED,
Format.byteArray,
vf.getFrameRate(),
quality,
decimation);
|
| public void | open()
if (inputFormat == null || outputFormat == null)
throw new ResourceUnavailableException("Incorrect formats set on JPEG converter");
rtpdp = new RTPDePacketizer();
super.open();
|
| public synchronized int | process(javax.media.Buffer inBuffer, javax.media.Buffer outBuffer)
if (isEOM(inBuffer)) {
propagateEOM(outBuffer);
return BUFFER_PROCESSED_OK;
}
if (inBuffer.isDiscard()) {
updateOutput(outBuffer, outputFormat, 0, 0);
outBuffer.setDiscard(true);
return OUTPUT_BUFFER_NOT_FILLED;
}
// if the encoding is JPEG_RTP, send this packet over to the
// depacketizer, which will do all the work for you. If the
// depacketizer has not finished constructing a frame, dont
// send it for decoding and just return. If the depacketizer
// has finished constructing an entire frame, send it to the
// decoder after getting a handle over the decimation and
// quality from the depacketizer.
int retVal = rtpdp.process(inBuffer, outBuffer);
// return any value from the depacketizer except,
// BUFFER_PROCESSED_OK, which indicates a complete frame
// is ready for decoding
if (retVal != BUFFER_PROCESSED_OK) {
return retVal;
}
// at this time, the inBuffer contains a complete JPEG
// frame of format JPEG
int type = rtpdp.getType();
int q = rtpdp.getQuality();
// compute thje outputFormat only if the type has changed
// or this is the first time.
if (type != decimation || q != quality) {
decimation = type;
quality = q;
outputFormat = makeJPEGFormat(inBuffer.getFormat());
}
outBuffer.setFormat(outputFormat);
// the following code fragment has been removed since the RTPDePacketizer
// now uses the outBuffer for frame assembly.
/*
byte [] inData = (byte[]) inBuffer.getData();
byte [] outData = (byte[]) outBuffer.getData();
if (outData == null || outData.length < inData.length) {
outData = new byte[inData.length];
outBuffer.setData(outData);
}
*/
// Neither copying or setting the data is optimal.
// We'll need to rewrite RTPDePacketizer to reuse the array.
// -ivg
//System.arraycopy((byte[])inData, 0, (byte[])outData, 0, inBuffer.getLength());
/*
outBuffer.setData(inData);
outBuffer.setLength(inBuffer.getLength());
*/
outBuffer.setOffset(0);
outBuffer.setTimeStamp(inBuffer.getTimeStamp());
inBuffer.setLength(0);
outBuffer.setFlags(outBuffer.getFlags() | Buffer.FLAG_KEY_FRAME);
return BUFFER_PROCESSED_OK;
|
| public void | reset()
// Anything to do?
|
| public javax.media.Format | setInputFormat(javax.media.Format input)
inputFormat = (VideoFormat) input;
if (opened) {
outputFormat = makeJPEGFormat(inputFormat);
}
return input;
|
| public javax.media.Format | setOutputFormat(javax.media.Format output)
if (!(output instanceof VideoFormat)) return null;
outputFormat = makeJPEGFormat(output);
return outputFormat;
|
