fstdeterminizestar.cc File Reference

#include "base/kaldi-common.h"
#include "util/common-utils.h"
#include "fst/fstlib.h"
#include "fstext/determinize-star.h"
#include "fstext/fstext-utils.h"
#include "fstext/kaldi-fst-io.h"
#include <signal.h>

Include dependency graph for fstdeterminizestar.cc:

Go to the source code of this file.

Functions
void	signal_handler (int)
int	main (int argc, char *argv[])

Variables
bool	debug_location = false

Function Documentation

main()

int main	(	int	argc,
		char *	argv[]
	)

Definition at line 64 of file fstdeterminizestar.cc.

References kaldi::ClassifyRspecifier(), fst::DeterminizeStar(), fst::DeterminizeStarInLog(), SequentialTableReader< Holder >::Done(), SequentialTableReader< Holder >::FreeCurrent(), ParseOptions::GetOptArg(), KALDI_WARN, SequentialTableReader< Holder >::Key(), kaldi::kNoRspecifier, SequentialTableReader< Holder >::Next(), ParseOptions::NumArgs(), ParseOptions::PrintUsage(), ParseOptions::Read(), fst::ReadFstKaldi(), ParseOptions::Register(), signal_handler(), SequentialTableReader< Holder >::Value(), TableWriter< Holder >::Write(), and fst::WriteFstKaldi().

                                 {
  try {
    using namespace kaldi;
    using namespace fst;
    using kaldi::int32;

    const char *usage =
        "Removes epsilons and determinizes in one step\n"
        "\n"
        "Usage:  fstdeterminizestar [in.fst [out.fst] ]\n"
        "\n"
        "See also: fstdeterminizelog, lattice-determinize\n";

    float delta = kDelta;
    int max_states = -1;
    bool use_log = false;
    ParseOptions po(usage);
    po.Register("use-log", &use_log, "Determinize in log semiring.");
    po.Register("delta", &delta, "Delta value used to determine equivalence of weights.");
    po.Register("max-states", &max_states, "Maximum number of states in determinized FST before it will abort.");
    po.Read(argc, argv);

    if (po.NumArgs() > 2) {
      po.PrintUsage();
      exit(1);
    }

    std::string fst_in_str = po.GetOptArg(1),
        fst_out_str = po.GetOptArg(2);

    // This enables us to get traceback info from determinization that is
    // not seeming to terminate.
#if !defined(_MSC_VER) && !defined(__APPLE__)
    signal(SIGUSR1, signal_handler);
#endif
    if (ClassifyRspecifier(fst_in_str, NULL, NULL) == kNoRspecifier) {
      // Normal case: just files.
      VectorFst<StdArc> *fst = ReadFstKaldi(fst_in_str);

      ArcSort(fst, ILabelCompare<StdArc>());  // improves speed.
      if (use_log) {
        DeterminizeStarInLog(fst, delta, &debug_location, max_states);
      } else {
        VectorFst<StdArc> det_fst;
        DeterminizeStar(*fst, &det_fst, delta, &debug_location, max_states);
        *fst = det_fst;  // will do shallow copy and then det_fst goes
        // out of scope anyway.
      }
      WriteFstKaldi(*fst, fst_out_str);
      delete fst;
    } else { // Dealing with archives.
      SequentialTableReader<VectorFstHolder> fst_reader(fst_in_str);
      TableWriter<VectorFstHolder> fst_writer(fst_out_str);
      for (; !fst_reader.Done(); fst_reader.Next()) {
        std::string key = fst_reader.Key();
        VectorFst<StdArc> fst(fst_reader.Value());
        fst_reader.FreeCurrent();
        ArcSort(&fst, ILabelCompare<StdArc>()); // improves speed.
        try {
          if (use_log) {
            DeterminizeStarInLog(&fst, delta, &debug_location, max_states);
          } else {
            VectorFst<StdArc> det_fst;
            DeterminizeStar(fst, &det_fst, delta, &debug_location, max_states);
            fst = det_fst;  // will do shallow copy and then det_fst goes out
            // of scope anyway.
          }
          fst_writer.Write(key, fst);
        } catch (const std::runtime_error &e) {
          KALDI_WARN << "Error during determinization for key " << key;
        }
      }
    }
    return 0;
  } catch(const std::exception &e) {
    std::cerr << e.what();
    return -1;
  }
}

signal_handler()

void signal_handler

(

int

)

Definition at line 58 of file fstdeterminizestar.cc.

Referenced by main().

                         {
  debug_location = true;
}

Variable Documentation

debug_location

bool debug_location = false

Definition at line 57 of file fstdeterminizestar.cc.