void convertchan2beam( ifstream& datastrm) {
ostringstream ossmsg;
int pktSize = chanpkt1.getDataSize() + sizeof(beamHdr);
for (;;) {
datastrm.read((char *) &chanpkt1, pktSize);
if (datastrm.gcount() != pktSize) {
if (datastrm.eof()) return; // EOF should occur on this read
ossmsg << "(1) unexpected data file read count " <<
dec << datastrm.gcount();
mylog(ossmsg);
exit(EXIT_FAILURE);
}
chanpkt1.marshall();
memcpy( reinterpret_cast<void *>(&beamHdr),
reinterpret_cast<void *>(&chanpkt1), sizeof(beamHdr)) ;
datastrm.read((char *) &chanpkt2, pktSize);
if (datastrm.gcount() != pktSize) {
ossmsg << "(2) unexpected data file read count " <<
dec << datastrm.gcount();
mylog(ossmsg);
exit(EXIT_FAILURE);
}
chanpkt2.marshall();
short2char(reinterpret_cast<signed char *>(beampkt.getData()),
reinterpret_cast <signed short *>(chanpkt1.getData()),
reinterpret_cast <signed short *>(chanpkt2.getData()),
chanpkt1.getDataSize());
// sanity check for 0xaabbccdd endian order value
if (beamHdr.order != ATADataPacketHeader::CORRECT_ENDIAN) {
mylog("output packet header does not contain 0xaabbccdd endian value");
exit(EXIT_FAILURE);
}
// fix some of the fields to make packets look like they came
// from the beamformer
beamHdr.src = ATADataPacketHeader::BEAM_104MHZ; // not really
beamHdr.chan = 1;
beamHdr.seq = sequence_num++;
beamHdr.len = 2048;
memcpy( reinterpret_cast<void *>(&beampkt),
reinterpret_cast<void *>(&beamHdr), sizeof(beamHdr));
// write the SonATA channelizer compatible packet to stdout
cout.write((char *) &beampkt, pktSize);
}
}
void convertchan2beam( ifstream& datastrm) {
ostringstream ossmsg;
int pktSize = chanpkt1.getDataSize() + sizeof(beamHdr);
for (;;) {
datastrm.read((char *) &chanpkt1, pktSize);
if (datastrm.gcount() != pktSize) {
if (datastrm.eof()) return; // EOF should occur on this read
ossmsg << "(1) unexpected data file read count " <<
dec << datastrm.gcount();
mylog(ossmsg);
ossmsg << "Packets: " << packetCount << endl
<< seqGaps << " gap(s) in sequence; " << totalMissedPackets
<< " Total Missed Packets" << endl;
mylog(ossmsg);
exit(EXIT_FAILURE);
}
chanpkt1.marshall();
// Copy the header into the output buffer
memcpy( reinterpret_cast<void *>(&beamHdr),
reinterpret_cast<void *>(&chanpkt1), sizeof(beamHdr)) ;
if (packetCount == 0)
{
expected[0] = expected[1] = beamHdr.seq;
}
// Check for missing packets
checkForMissingPackets(&beamHdr );
datastrm.read((char *) &chanpkt2, pktSize);
if (datastrm.gcount() != pktSize) {
ossmsg << "(2) unexpected data file read count " <<
dec << datastrm.gcount();
mylog(ossmsg);
ossmsg << "Packets: " << packetCount << endl
<< seqGaps << " gap(s) in sequence; " << totalMissedPackets
<< " Total Missed Packets" << endl;
mylog(ossmsg);
exit(EXIT_FAILURE);
}
// Read the next packet
chanpkt2.marshall();
memcpy( reinterpret_cast<void *>(&chanHdr),
reinterpret_cast<void *>(&chanpkt2), sizeof(chanHdr)) ;
// Check for missing packets
checkForMissingPackets( &chanHdr );
// Convert both packets' data to 8 bit complex and store in
// output buffer.
short2char(reinterpret_cast<signed char *>(beampkt.getData()),
reinterpret_cast <signed short *>(chanpkt1.getData()),
reinterpret_cast <signed short *>(chanpkt2.getData()),
chanpkt1.getDataSize());
// sanity check for 0xaabbccdd endian order value
if (beamHdr.order != ATADataPacketHeader::CORRECT_ENDIAN) {
mylog("output packet header does not contain 0xaabbccdd endian value");
ossmsg << "Packets: " << packetCount << endl
<< seqGaps << " gap(s) in sequence; " << totalMissedPackets
<< " Total Missed Packets" << endl;
mylog(ossmsg);
exit(EXIT_FAILURE);
}
// fix some of the fields to make packets look like they came
// from the beamformer
beamHdr.src = ATADataPacketHeader::BEAM_104MHZ; // not really
beamHdr.chan = 1;
beamHdr.seq = sequence_num++;
beamHdr.len = 2048;
memcpy( reinterpret_cast<void *>(&beampkt),
reinterpret_cast<void *>(&beamHdr), sizeof(beamHdr));
// write the SonATA channelizer compatible packet to stdout
cout.write((char *) &beampkt, pktSize);
}
}