Program: 107525
Project: 107525
Buggy source:
/** 
 * Transforms the RTP packet specified in the   {@link RawPacket} that ispassed as an argument for the purposes of simulcast.
 * @param pkt the {@link RawPacket} to be transformed.
 * @return the transformed {@link RawPacket} or null if the packet needsto be dropped.
 */
public RawPacket[] rtpTransform(RawPacket pkt){
  if (!RTPPacketPredicate.INSTANCE.test(pkt)) {
    return new RawPacket[]{pkt};
  }
  SimTransformation state=transformState;
  long srcSSRC=pkt.getSSRCAsLong();
  if (srcSSRC != state.currentSSRC) {
    return null;
  }
  RawPacket[] pkts;
  FrameDesc startFrame;
  if (transformState.maybeFixInitialIndependentFrame && (startFrame=state.weakStartFrame.get()) != null && startFrame.matches(pkt)) {
    transformState.maybeFixInitialIndependentFrame=false;
    if (startFrame.getStart() != pkt.getSequenceNumber()) {
      RawPacketCache inCache=startFrame.getRTPEncoding().getMediaStreamTrack().getMediaStreamTrackReceiver().getStream().getCachingTransformer().getIncomingRawPacketCache();
      int start=startFrame.getStart();
      int len=RTPUtils.sequenceNumberDiff(startFrame.getMaxSeen(),start) + 1;
      pkts=new RawPacket[len];
      for (int i=0; i < pkts.length; i++) {
        pkts[i]=inCache.get(srcSSRC,(start + i) & 0xFFFF);
      }
    }
 else {
      pkts=new RawPacket[]{pkt};
    }
  }
 else {
    pkts=new RawPacket[]{pkt};
  }
  for (int i=0; i < pkts.length; i++) {
    if (pkts[i] == null) {
      continue;
    }
    int srcSeqNum=pkt.getSequenceNumber();
    int dstSeqNum=state.rewriteSeqNum(srcSeqNum);
    long srcTs=pkt.getTimestamp();
    long dstTs=state.rewriteTimestamp(srcTs);
    if (logger.isDebugEnabled()) {
      logger.debug("String_Node_Str" + pkt.getSSRCAsLong() + "String_Node_Str"+ srcSeqNum+ "String_Node_Str"+ srcTs+ "String_Node_Str"+ targetSSRC+ "String_Node_Str"+ dstSeqNum+ "String_Node_Str"+ dstTs);
    }
    if (srcSeqNum != dstSeqNum) {
      pkt.setSequenceNumber(dstSeqNum);
    }
    if (dstTs != srcTs) {
      pkt.setTimestamp(dstTs);
    }
    if (srcSSRC != targetSSRC) {
      pkt.setSSRC((int)targetSSRC);
    }
  }
  return pkts;
}

Fixed version (ground truth):
/** 
 * Transforms the RTP packet specified in the   {@link RawPacket} that ispassed as an argument for the purposes of simulcast.
 * @param pktIn the {@link RawPacket} to be transformed.
 * @return the transformed {@link RawPacket} or null if the packet needsto be dropped.
 */
public RawPacket[] rtpTransform(RawPacket pktIn){
  if (!RTPPacketPredicate.INSTANCE.test(pktIn)) {
    return new RawPacket[]{pktIn};
  }
  SimTransformation state=transformState;
  long srcSSRC=pktIn.getSSRCAsLong();
  if (srcSSRC != state.currentSSRC) {
    return null;
  }
  RawPacket[] pktsOut;
  FrameDesc startFrame;
  if (transformState.maybeFixInitialIndependentFrame && (startFrame=state.weakStartFrame.get()) != null && startFrame.matches(pktIn)) {
    transformState.maybeFixInitialIndependentFrame=false;
    if (startFrame.getStart() != pktIn.getSequenceNumber()) {
      RawPacketCache inCache=startFrame.getRTPEncoding().getMediaStreamTrack().getMediaStreamTrackReceiver().getStream().getCachingTransformer().getIncomingRawPacketCache();
      int start=startFrame.getStart();
      int len=RTPUtils.sequenceNumberDiff(startFrame.getMaxSeen(),start) + 1;
      pktsOut=new RawPacket[len];
      for (int i=0; i < pktsOut.length; i++) {
        pktsOut[i]=inCache.get(srcSSRC,(start + i) & 0xFFFF);
      }
    }
 else {
      pktsOut=new RawPacket[]{pktIn};
    }
  }
 else {
    pktsOut=new RawPacket[]{pktIn};
  }
  for (  RawPacket pktOut : pktsOut) {
    if (pktOut == null) {
      continue;
    }
    int srcSeqNum=pktOut.getSequenceNumber();
    int dstSeqNum=state.rewriteSeqNum(srcSeqNum);
    long srcTs=pktOut.getTimestamp();
    long dstTs=state.rewriteTimestamp(srcTs);
    if (logger.isDebugEnabled()) {
      logger.debug("String_Node_Str" + pktIn.getSSRCAsLong() + "String_Node_Str"+ srcSeqNum+ "String_Node_Str"+ srcTs+ "String_Node_Str"+ targetSSRC+ "String_Node_Str"+ dstSeqNum+ "String_Node_Str"+ dstTs);
    }
    if (srcSeqNum != dstSeqNum) {
      pktOut.setSequenceNumber(dstSeqNum);
    }
    if (dstTs != srcTs) {
      pktOut.setTimestamp(dstTs);
    }
    if (srcSSRC != targetSSRC) {
      pktOut.setSSRC((int)targetSSRC);
    }
  }
  return pktsOut;
}