splice-feats.cc File Reference

#include "base/kaldi-common.h"
#include "util/common-utils.h"
#include "matrix/kaldi-matrix.h"
#include "feat/feature-functions.h"

Include dependency graph for splice-feats.cc:

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

Function Documentation

main()

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

Definition at line 25 of file splice-feats.cc.

References SequentialTableReader< Holder >::Done(), ParseOptions::GetArg(), SequentialTableReader< Holder >::Key(), SequentialTableReader< Holder >::Next(), ParseOptions::NumArgs(), ParseOptions::PrintUsage(), ParseOptions::Read(), ParseOptions::Register(), kaldi::SpliceFrames(), SequentialTableReader< Holder >::Value(), and TableWriter< Holder >::Write().

                                 {
  try {
    using namespace kaldi;

    const char *usage =
        "Splice features with left and right context (e.g. prior to LDA)\n"
        "Usage: splice-feats [options] <feature-rspecifier> <feature-wspecifier>\n"
        "e.g.: splice-feats scp:feats.scp ark:-\n";
        

    ParseOptions po(usage);
    int32 left_context = 4, right_context = 4;


    po.Register("left-context", &left_context, "Number of frames of left context");
    po.Register("right-context", &right_context, "Number of frames of right context");

    po.Read(argc, argv);

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

    std::string rspecifier = po.GetArg(1);
    std::string wspecifier = po.GetArg(2);

    BaseFloatMatrixWriter kaldi_writer(wspecifier);
    SequentialBaseFloatMatrixReader kaldi_reader(rspecifier);
    for (; !kaldi_reader.Done(); kaldi_reader.Next()) {
      Matrix<BaseFloat> spliced;
      SpliceFrames(kaldi_reader.Value(),
                   left_context,
                   right_context,
                   &spliced);
      kaldi_writer.Write(kaldi_reader.Key(), spliced);
    }
    return 0;
  } catch(const std::exception &e) {
    std::cerr << e.what();
    return -1;
  }
}