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-rw-r--r--src/EtiReader.cpp350
-rw-r--r--src/EtiReader.h21
2 files changed, 187 insertions, 184 deletions
diff --git a/src/EtiReader.cpp b/src/EtiReader.cpp
index 25c1ada..be4ba8e 100644
--- a/src/EtiReader.cpp
+++ b/src/EtiReader.cpp
@@ -38,24 +38,8 @@
using namespace std;
-enum ETI_READER_STATE {
- EtiReaderStateNbFrame,
- EtiReaderStateFrameSize,
- EtiReaderStateSync,
- EtiReaderStateFc,
- EtiReaderStateNst,
- EtiReaderStateEoh,
- EtiReaderStateFic,
- EtiReaderStateSubch,
- EtiReaderStateEof,
- EtiReaderStateTist,
- EtiReaderStatePad
-};
-
-
EtiReader::EtiReader(
double& tist_offset_s) :
- state(EtiReaderStateSync),
myTimestampDecoder(tist_offset_s),
eti_fc_valid(false)
{
@@ -109,178 +93,178 @@ int EtiReader::loadEtiData(const Buffer& dataIn)
while (input_size > 0) {
switch (state) {
- case EtiReaderStateNbFrame:
- if (input_size < 4) {
- return dataIn.getLength() - input_size;
- }
- nb_frames = *(uint32_t*)in;
- input_size -= 4;
- in += 4;
- state = EtiReaderStateFrameSize;
- PDEBUG("Nb frames: %i\n", nb_frames);
- break;
- case EtiReaderStateFrameSize:
- if (input_size < 2) {
- return dataIn.getLength() - input_size;
- }
- framesize = *(uint16_t*)in;
- input_size -= 2;
- in += 2;
- state = EtiReaderStateSync;
- PDEBUG("Framesize: %i\n", framesize);
- break;
- case EtiReaderStateSync:
- if (input_size < 4) {
- return dataIn.getLength() - input_size;
- }
- framesize = 6144;
- memcpy(&eti_sync, in, 4);
- input_size -= 4;
- framesize -= 4;
- in += 4;
- state = EtiReaderStateFc;
- PDEBUG("Sync.err: 0x%.2x\n", eti_sync.ERR);
- PDEBUG("Sync.fsync: 0x%.6x\n", eti_sync.FSYNC);
- break;
- case EtiReaderStateFc:
- if (input_size < 4) {
- return dataIn.getLength() - input_size;
- }
- memcpy(&eti_fc, in, 4);
- eti_fc_valid = true;
- input_size -= 4;
- framesize -= 4;
- in += 4;
- state = EtiReaderStateNst;
- PDEBUG("Fc.fct: 0x%.2x\n", eti_fc.FCT);
- PDEBUG("Fc.ficf: %u\n", eti_fc.FICF);
- PDEBUG("Fc.nst: %u\n", eti_fc.NST);
- PDEBUG("Fc.fp: 0x%x\n", eti_fc.FP);
- PDEBUG("Fc.mid: %u\n", eti_fc.MID);
- PDEBUG("Fc.fl: %u\n", eti_fc.getFrameLength());
- if (!eti_fc.FICF) {
- throw std::runtime_error("FIC must be present to modulate!");
- }
- if (not myFicSource) {
- unsigned ficf = eti_fc.FICF;
- unsigned mid = eti_fc.MID;
- myFicSource = make_shared<FicSource>(ficf, mid);
- }
- break;
- case EtiReaderStateNst:
- if (input_size < 4 * (size_t)eti_fc.NST) {
- return dataIn.getLength() - input_size;
- }
- if ((eti_stc.size() != eti_fc.NST) ||
- (memcmp(&eti_stc[0], in, 4 * eti_fc.NST))) {
- PDEBUG("New stc!\n");
- eti_stc.resize(eti_fc.NST);
- memcpy(&eti_stc[0], in, 4 * eti_fc.NST);
-
- mySources.clear();
- for (unsigned i = 0; i < eti_fc.NST; ++i) {
- const auto tpl = eti_stc[i].TPL;
- mySources.push_back(
- make_shared<SubchannelSource>(
- eti_stc[i].getStartAddress(),
- eti_stc[i].getSTL(),
- tpl));
- PDEBUG("Sstc %u:\n", i);
- PDEBUG(" Stc%i.scid: %i\n", i, eti_stc[i].SCID);
- PDEBUG(" Stc%i.sad: %u\n", i, eti_stc[i].getStartAddress());
- PDEBUG(" Stc%i.tpl: 0x%.2x\n", i, eti_stc[i].TPL);
- PDEBUG(" Stc%i.stl: %u\n", i, eti_stc[i].getSTL());
+ case EtiReaderState::NbFrame:
+ if (input_size < 4) {
+ return dataIn.getLength() - input_size;
}
- }
- input_size -= 4 * eti_fc.NST;
- framesize -= 4 * eti_fc.NST;
- in += 4 * eti_fc.NST;
- state = EtiReaderStateEoh;
- break;
- case EtiReaderStateEoh:
- if (input_size < 4) {
- return dataIn.getLength() - input_size;
- }
- memcpy(&eti_eoh, in, 4);
- input_size -= 4;
- framesize -= 4;
- in += 4;
- state = EtiReaderStateFic;
- PDEBUG("Eoh.mnsc: 0x%.4x\n", eti_eoh.MNSC);
- PDEBUG("Eoh.crc: 0x%.4x\n", eti_eoh.CRC);
- break;
- case EtiReaderStateFic:
- if (eti_fc.MID == 3) {
- if (input_size < 128) {
+ nb_frames = *(uint32_t*)in;
+ input_size -= 4;
+ in += 4;
+ state = EtiReaderState::FrameSize;
+ PDEBUG("Nb frames: %i\n", nb_frames);
+ break;
+ case EtiReaderState::FrameSize:
+ if (input_size < 2) {
return dataIn.getLength() - input_size;
}
- PDEBUG("Writing 128 bytes of FIC channel data\n");
- Buffer fic(128, in);
- myFicSource->loadFicData(fic);
- input_size -= 128;
- framesize -= 128;
- in += 128;
- } else {
- if (input_size < 96) {
+ framesize = *(uint16_t*)in;
+ input_size -= 2;
+ in += 2;
+ state = EtiReaderState::Sync;
+ PDEBUG("Framesize: %i\n", framesize);
+ break;
+ case EtiReaderState::Sync:
+ if (input_size < 4) {
return dataIn.getLength() - input_size;
}
- PDEBUG("Writing 96 bytes of FIC channel data\n");
- Buffer fic(96, in);
- myFicSource->loadFicData(fic);
- input_size -= 96;
- framesize -= 96;
- in += 96;
- }
- state = EtiReaderStateSubch;
- break;
- case EtiReaderStateSubch:
- for (size_t i = 0; i < eti_stc.size(); ++i) {
- unsigned size = mySources[i]->framesize();
- PDEBUG("Writting %i bytes of subchannel data\n", size);
- Buffer subch(size, in);
- mySources[i]->loadSubchannelData(move(subch));
- input_size -= size;
- framesize -= size;
- in += size;
- }
- state = EtiReaderStateEof;
- break;
- case EtiReaderStateEof:
- if (input_size < 4) {
- return dataIn.getLength() - input_size;
- }
- memcpy(&eti_eof, in, 4);
- input_size -= 4;
- framesize -= 4;
- in += 4;
- state = EtiReaderStateTist;
- PDEBUG("Eof.crc: %#.4x\n", eti_eof.CRC);
- PDEBUG("Eof.rfu: %#.4x\n", eti_eof.RFU);
- break;
- case EtiReaderStateTist:
- if (input_size < 4) {
- return dataIn.getLength() - input_size;
- }
- memcpy(&eti_tist, in, 4);
- input_size -= 4;
- framesize -= 4;
- in += 4;
- state = EtiReaderStatePad;
- PDEBUG("Tist: 0x%.6x\n", eti_tist.TIST);
- break;
- case EtiReaderStatePad:
- if (framesize > 0) {
- --input_size;
- --framesize;
- ++in;
- } else {
- state = EtiReaderStateSync;
- }
- break;
- default:
- // throw std::runtime_error("Invalid state!");
- PDEBUG("Invalid state (%i)!", state);
- input_size = 0;
+ framesize = 6144;
+ memcpy(&eti_sync, in, 4);
+ input_size -= 4;
+ framesize -= 4;
+ in += 4;
+ state = EtiReaderState::Fc;
+ PDEBUG("Sync.err: 0x%.2x\n", eti_sync.ERR);
+ PDEBUG("Sync.fsync: 0x%.6x\n", eti_sync.FSYNC);
+ break;
+ case EtiReaderState::Fc:
+ if (input_size < 4) {
+ return dataIn.getLength() - input_size;
+ }
+ memcpy(&eti_fc, in, 4);
+ eti_fc_valid = true;
+ input_size -= 4;
+ framesize -= 4;
+ in += 4;
+ state = EtiReaderState::Nst;
+ PDEBUG("Fc.fct: 0x%.2x\n", eti_fc.FCT);
+ PDEBUG("Fc.ficf: %u\n", eti_fc.FICF);
+ PDEBUG("Fc.nst: %u\n", eti_fc.NST);
+ PDEBUG("Fc.fp: 0x%x\n", eti_fc.FP);
+ PDEBUG("Fc.mid: %u\n", eti_fc.MID);
+ PDEBUG("Fc.fl: %u\n", eti_fc.getFrameLength());
+ if (!eti_fc.FICF) {
+ throw std::runtime_error("FIC must be present to modulate!");
+ }
+ if (not myFicSource) {
+ unsigned ficf = eti_fc.FICF;
+ unsigned mid = eti_fc.MID;
+ myFicSource = make_shared<FicSource>(ficf, mid);
+ }
+ break;
+ case EtiReaderState::Nst:
+ if (input_size < 4 * (size_t)eti_fc.NST) {
+ return dataIn.getLength() - input_size;
+ }
+ if ((eti_stc.size() != eti_fc.NST) ||
+ (memcmp(&eti_stc[0], in, 4 * eti_fc.NST))) {
+ PDEBUG("New stc!\n");
+ eti_stc.resize(eti_fc.NST);
+ memcpy(&eti_stc[0], in, 4 * eti_fc.NST);
+
+ mySources.clear();
+ for (unsigned i = 0; i < eti_fc.NST; ++i) {
+ const auto tpl = eti_stc[i].TPL;
+ mySources.push_back(
+ make_shared<SubchannelSource>(
+ eti_stc[i].getStartAddress(),
+ eti_stc[i].getSTL(),
+ tpl));
+ PDEBUG("Sstc %u:\n", i);
+ PDEBUG(" Stc%i.scid: %i\n", i, eti_stc[i].SCID);
+ PDEBUG(" Stc%i.sad: %u\n", i, eti_stc[i].getStartAddress());
+ PDEBUG(" Stc%i.tpl: 0x%.2x\n", i, eti_stc[i].TPL);
+ PDEBUG(" Stc%i.stl: %u\n", i, eti_stc[i].getSTL());
+ }
+ }
+ input_size -= 4 * eti_fc.NST;
+ framesize -= 4 * eti_fc.NST;
+ in += 4 * eti_fc.NST;
+ state = EtiReaderState::Eoh;
+ break;
+ case EtiReaderState::Eoh:
+ if (input_size < 4) {
+ return dataIn.getLength() - input_size;
+ }
+ memcpy(&eti_eoh, in, 4);
+ input_size -= 4;
+ framesize -= 4;
+ in += 4;
+ state = EtiReaderState::Fic;
+ PDEBUG("Eoh.mnsc: 0x%.4x\n", eti_eoh.MNSC);
+ PDEBUG("Eoh.crc: 0x%.4x\n", eti_eoh.CRC);
+ break;
+ case EtiReaderState::Fic:
+ if (eti_fc.MID == 3) {
+ if (input_size < 128) {
+ return dataIn.getLength() - input_size;
+ }
+ PDEBUG("Writing 128 bytes of FIC channel data\n");
+ Buffer fic(128, in);
+ myFicSource->loadFicData(fic);
+ input_size -= 128;
+ framesize -= 128;
+ in += 128;
+ } else {
+ if (input_size < 96) {
+ return dataIn.getLength() - input_size;
+ }
+ PDEBUG("Writing 96 bytes of FIC channel data\n");
+ Buffer fic(96, in);
+ myFicSource->loadFicData(fic);
+ input_size -= 96;
+ framesize -= 96;
+ in += 96;
+ }
+ state = EtiReaderState::Subch;
+ break;
+ case EtiReaderState::Subch:
+ for (size_t i = 0; i < eti_stc.size(); ++i) {
+ unsigned size = mySources[i]->framesize();
+ PDEBUG("Writting %i bytes of subchannel data\n", size);
+ Buffer subch(size, in);
+ mySources[i]->loadSubchannelData(move(subch));
+ input_size -= size;
+ framesize -= size;
+ in += size;
+ }
+ state = EtiReaderState::Eof;
+ break;
+ case EtiReaderState::Eof:
+ if (input_size < 4) {
+ return dataIn.getLength() - input_size;
+ }
+ memcpy(&eti_eof, in, 4);
+ input_size -= 4;
+ framesize -= 4;
+ in += 4;
+ state = EtiReaderState::Tist;
+ PDEBUG("Eof.crc: %#.4x\n", eti_eof.CRC);
+ PDEBUG("Eof.rfu: %#.4x\n", eti_eof.RFU);
+ break;
+ case EtiReaderState::Tist:
+ if (input_size < 4) {
+ return dataIn.getLength() - input_size;
+ }
+ memcpy(&eti_tist, in, 4);
+ input_size -= 4;
+ framesize -= 4;
+ in += 4;
+ state = EtiReaderState::Pad;
+ PDEBUG("Tist: 0x%.6x\n", eti_tist.TIST);
+ break;
+ case EtiReaderState::Pad:
+ if (framesize > 0) {
+ --input_size;
+ --framesize;
+ ++in;
+ } else {
+ state = EtiReaderState::Sync;
+ }
+ break;
+ default:
+ // throw std::runtime_error("Invalid state!");
+ PDEBUG("Invalid state (%i)!", state);
+ input_size = 0;
}
}
diff --git a/src/EtiReader.h b/src/EtiReader.h
index 28fb2ac..cda181d 100644
--- a/src/EtiReader.h
+++ b/src/EtiReader.h
@@ -72,6 +72,25 @@ protected:
std::shared_ptr<FicSource> myFicSource;
};
+enum class EtiReaderState {
+ // For Framed input format
+ NbFrame,
+
+ // For Streamed input format
+ FrameSize,
+
+ // ETI Sync
+ Sync,
+ Fc,
+ Nst,
+ Eoh,
+ Fic,
+ Subch,
+ Eof,
+ Tist,
+ Pad
+};
+
/* The EtiReader extracts the necessary data for modulation from an ETI(NI) byte stream. */
class EtiReader : public EtiSource
{
@@ -95,7 +114,7 @@ private:
/* Transform the ETI TIST to a PPS offset in units of 1/16384000 s */
uint32_t getPPSOffset();
- int state;
+ EtiReaderState state = EtiReaderState::Sync;
uint32_t nb_frames;
uint16_t framesize;
eti_SYNC eti_sync;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 06:23:06 +0000