86 lines
2.6 KiB
C++
86 lines
2.6 KiB
C++
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// fstbin/fstaddsubsequentialloop.cc
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// Copyright 2009-2011 Microsoft Corporation
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// See ../../COPYING for clarification regarding multiple authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
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// WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
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// MERCHANTABLITY OR NON-INFRINGEMENT.
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// See the Apache 2 License for the specific language governing permissions and
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// limitations under the License.
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#include "base/kaldi-common.h"
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#include "util/kaldi-io.h"
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#include "util/parse-options.h"
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#include "util/text-utils.h"
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#include "fst/fstlib.h"
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#include "fstext/fstext-utils.h"
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#include "fstext/context-fst.h"
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#include "fstext/kaldi-fst-io.h"
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/* some test examples:
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( echo "0 0 0 0"; echo "0 0" ) | fstcompile | fstaddsubsequentialloop 1 | fstprint
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( echo "0 1 0 0"; echo " 0 2 0 0"; echo "1 0"; echo "2 0"; ) | fstcompile | fstaddsubsequentialloop 1 | fstprint
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*/
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int main(int argc, char *argv[]) {
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try {
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using namespace kaldi;
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using namespace fst;
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using kaldi::int32;
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const char *usage =
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"Minimizes FST after encoding [this algorithm applicable to all FSTs in tropical semiring]\n"
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"\n"
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"Usage: fstaddsubsequentialloop subseq_sym [in.fst [out.fst] ]\n"
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"E.g.: fstaddsubsequentialloop 52 < LG.fst > LG_sub.fst\n";
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float delta = kDelta;
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ParseOptions po(usage);
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po.Register("delta", &delta,
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"Delta likelihood used for quantization of weights");
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po.Read(argc, argv);
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if (po.NumArgs() < 1 || po.NumArgs() > 3) {
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po.PrintUsage();
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exit(1);
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}
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int32 subseq_sym;
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if (!ConvertStringToInteger(po.GetArg(1), &subseq_sym))
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KALDI_ERR << "Invalid subsequential symbol "<<po.GetArg(1);
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std::string fst_in_filename = po.GetOptArg(2);
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std::string fst_out_filename = po.GetOptArg(3);
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VectorFst<StdArc> *fst = ReadFstKaldi(fst_in_filename);
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int32 h = HighestNumberedInputSymbol(*fst);
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if (subseq_sym <= h) {
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std::cerr << "fstaddsubsequentialloop.cc: subseq symbol does not seem right, "<<subseq_sym<<" <= "<<h<<'\n';
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}
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AddSubsequentialLoop(subseq_sym, fst);
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WriteFstKaldi(*fst, fst_out_filename);
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delete fst;
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return 0;
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} catch(const std::exception &e) {
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std::cerr << e.what();
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return -1;
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}
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}
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