lattice-depth-per-frame.cc
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// latbin/lattice-depth-per-frame.cc
// Copyright 2013 Ehsan Variani
// 2013,2016 Johns Hopkins University (Author: Daniel Povey)
// See ../../COPYING for clarification regarding multiple authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
// WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
// MERCHANTABLITY OR NON-INFRINGEMENT.
// See the Apache 2 License for the specific language governing permissions and
// limitations under the License.
#include "base/kaldi-common.h"
#include "util/common-utils.h"
#include "fstext/fstext-lib.h"
#include "lat/kaldi-lattice.h"
#include "lat/lattice-functions.h"
int main(int argc, char *argv[]) {
try {
using namespace kaldi;
typedef kaldi::int32 int32;
typedef kaldi::int64 int64;
using fst::VectorFst;
using fst::StdArc;
typedef StdArc::StateId StateId;
const char *usage =
"For each lattice, compute a vector of length (num-frames) saying how\n"
"may arcs cross each frame. See also lattice-depth\n"
"Usage: lattice-depth-per-frame <lattice-rspecifier> <depth-wspecifier> [<lattice-wspecifier>]\n"
"The final <lattice-wspecifier> allows you to write the input lattices out\n"
"in case you want to do something else with them as part of the same pipe.\n"
"E.g.: lattice-depth-per-frame ark:- ark,t:-\n";
ParseOptions po(usage);
po.Read(argc, argv);
if (po.NumArgs() < 2 || po.NumArgs() > 3) {
po.PrintUsage();
exit(1);
}
std::string lats_rspecifier = po.GetArg(1);
SequentialCompactLatticeReader clat_reader(lats_rspecifier);
std::string depth_wspecifier = po.GetArg(2);
Int32VectorWriter lats_depth_writer(depth_wspecifier);
std::string lattice_wspecifier = po.GetOptArg(3);
CompactLatticeWriter clat_writer(lattice_wspecifier);
int64 num_done = 0;
for (; !clat_reader.Done(); clat_reader.Next()) {
CompactLattice clat = clat_reader.Value();
std::string key = clat_reader.Key();
TopSortCompactLatticeIfNeeded(&clat);
std::vector<int32> depth_per_frame;
CompactLatticeDepthPerFrame(clat, &depth_per_frame);
lats_depth_writer.Write(key, depth_per_frame);
if (!lattice_wspecifier.empty())
clat_writer.Write(key, clat);
num_done++;
}
KALDI_LOG << "Done " << num_done << " lattices.";
if (num_done != 0) return 0;
else return 1;
} catch (const std::exception &e) {
std::cerr << e.what();
return -1;
}
}