// fstbin/fstmakecontextsyms.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 "tree/context-dep.h"
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#include "util/common-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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/*
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Test for this and makecontextfst:
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mkdir -p ~/tmpdir
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pushd ~/tmpdir
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(echo "<eps> 0"; echo "a 1"; echo "b 2"; echo "#0 3"; echo "#1 4"; echo "#$ 5" ) > phones.txt
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( echo 3; echo 4 ) > disambig.list
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fstmakecontextfst --read-disambig-syms=disambig.list <(grep -v '#' phones.txt) 5 ilabels.int > C.fst
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fstmakecontextsyms phones.txt ilabels.int > context_syms.txt
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fstprint --isymbols=context_syms.txt --osymbols=phones.txt C.fst > C.txt
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fstrandgen C.fst | fstprint --isymbols=context_syms.txt --osymbols=phones.txt
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Example output:
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fstrandgen C.fst | fstprint --isymbols=context_syms.txt --osymbols=phones.txt
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0 1 #-1 b
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1 2 <eps>/b/<eps> #$
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2 3 #1 #1
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3 4 #0 #0
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4 5 #0 #0
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5 6 #0 #0
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6 7 #0 #0
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7 8 #0 #0
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8 9 #1 #1
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9
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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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typedef fst::StdArc::Label Label;
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const char *usage = "Create input symbols for CLG\n"
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"Usage: fstmakecontextsyms phones-symtab ilabels_input_file [output-symtab.txt]\n"
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"E.g.: fstmakecontextsyms phones.txt ilabels.sym > context_symbols.txt\n";
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ParseOptions po(usage);
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std::string disambig_list_file = "",
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phone_separator = "/",
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initial_disambig = "#-1";
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po.Register("phone-separator", &phone_separator,
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"Separator for phones in phone-in-context symbols.");
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po.Register("initial-disambig", &initial_disambig,
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"Name for special disambiguation symbol that occurs at start "
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"of context-dependent phone sequences");
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po.Read(argc, argv);
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if (po.NumArgs() < 2 || po.NumArgs() > 3) {
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po.PrintUsage();
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exit(1);
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}
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std::string phones_symtab_filename = po.GetArg(1),
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ilabel_info_filename = po.GetArg(2),
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clg_symtab_filename = po.GetOptArg(3);
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std::vector<std::vector<kaldi::int32> > ilabel_info;
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{
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bool binary;
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Input ki(ilabel_info_filename, &binary);
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ReadILabelInfo(ki.Stream(),
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binary, &ilabel_info);
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}
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fst::SymbolTable *phones_symtab = NULL;
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{ // read phone symbol table.
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std::ifstream is(phones_symtab_filename.c_str());
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phones_symtab = fst::SymbolTable::ReadText(is, phones_symtab_filename);
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if (!phones_symtab) KALDI_ERR << "Could not read phones symbol-table file "<<phones_symtab_filename;
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}
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fst::SymbolTable *clg_symtab =
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CreateILabelInfoSymbolTable(ilabel_info,
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*phones_symtab,
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phone_separator,
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initial_disambig);
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if (clg_symtab_filename == "") {
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if (!clg_symtab->WriteText(std::cout))
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KALDI_ERR << "Cannot write symbol table to standard output.";
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} else {
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if (!clg_symtab->WriteText(clg_symtab_filename))
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KALDI_ERR << "Cannot open symbol table file "<<clg_symtab_filename<<" for writing.";
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}
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delete clg_symtab;
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delete phones_symtab;
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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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