public LJ1200Decoder(AliasList aliasList) {
mDecimationFilter =
new HalfBandFilter_RB_RB(
Filters.FIR_HALF_BAND_31T_ONE_EIGHTH_FCO.getCoefficients(), 1.0f, true);
mBandPassFilter =
new RealFIRFilter_RB_RB(Filters.FIRBP_1200FSK_24000FS.getCoefficients(), 1.02f);
mDecimationFilter.setListener(mBandPassFilter);
mFSKDecoder = new FSK2Decoder(DECIMATED_SAMPLE_RATE, SYMBOL_RATE, Output.INVERTED);
mBandPassFilter.setListener(mFSKDecoder);
mFSKDecoder.setListener(mFSKDecoderBroadcaster);
mTowerMessageFramer = new MessageFramer(SyncPattern.LJ1200.getPattern(), MESSAGE_LENGTH);
mTransponderMessageFramer =
new MessageFramer(SyncPattern.LJ1200_TRANSPONDER.getPattern(), MESSAGE_LENGTH);
mFSKDecoderBroadcaster.addListener(mTowerMessageFramer);
mFSKDecoderBroadcaster.addListener(mTransponderMessageFramer);
mMessageProcessor = new LJ1200MessageProcessor(aliasList);
mTowerMessageFramer.addMessageListener(mMessageProcessor);
mTransponderMessageFramer.addMessageListener(mMessageProcessor);
mMessageProcessor.setMessageListener(this);
}
public void dispose() {
super.dispose();
mDecimationFilter.dispose();
mBandPassFilter.dispose();
mFSKDecoder.dispose();
mTowerMessageFramer.dispose();
mMessageProcessor.dispose();
}
/**
* Passport Decoder. Decodes unfiltered (e.g. demodulated but with no DC or audio filtering)
* samples and produces Passport messages.
*/
public PassportDecoder(DecodeConfiguration config, AliasList aliasList) {
mPassportFSKDecoder = new LTRFSKDecoder();
mPassportMessageFramer =
new MessageFramer(SyncPattern.PASSPORT.getPattern(), PASSPORT_MESSAGE_LENGTH);
mPassportFSKDecoder.addListener(mPassportMessageFramer);
mPassportMessageProcessor = new PassportMessageProcessor(aliasList);
mPassportMessageFramer.addMessageListener(mPassportMessageProcessor);
mPassportMessageProcessor.setMessageListener(this);
}
@Override
public void reset() {
mPassportMessageFramer.reset();
}