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Diffstat (limited to 'kaldi_io/src/tools/openfst/include/fst/script/randgen.h')
-rw-r--r-- | kaldi_io/src/tools/openfst/include/fst/script/randgen.h | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/kaldi_io/src/tools/openfst/include/fst/script/randgen.h b/kaldi_io/src/tools/openfst/include/fst/script/randgen.h new file mode 100644 index 0000000..817f9c1 --- /dev/null +++ b/kaldi_io/src/tools/openfst/include/fst/script/randgen.h @@ -0,0 +1,76 @@ + +// 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 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. +// +// Copyright 2005-2010 Google, Inc. +// Author: [email protected] (Jake Ratkiewicz) + +#ifndef FST_SCRIPT_RANDGEN_H_ +#define FST_SCRIPT_RANDGEN_H_ + +#include <fst/script/arg-packs.h> +#include <fst/script/fst-class.h> +#include <fst/randgen.h> + +namespace fst { +namespace script { + +enum RandArcSelection { + UNIFORM_ARC_SELECTOR, + LOG_PROB_ARC_SELECTOR, + FAST_LOG_PROB_ARC_SELECTOR +}; + +typedef args::Package<const FstClass &, MutableFstClass*, int32, + const RandGenOptions<RandArcSelection> &> RandGenArgs; + +template<class Arc> +void RandGen(RandGenArgs *args) { + const Fst<Arc> &ifst = *(args->arg1.GetFst<Arc>()); + MutableFst<Arc> *ofst = args->arg2->GetMutableFst<Arc>(); + int32 seed = args->arg3; + const RandGenOptions<RandArcSelection> &opts = args->arg4; + + if (opts.arc_selector == UNIFORM_ARC_SELECTOR) { + UniformArcSelector<Arc> arc_selector(seed); + RandGenOptions< UniformArcSelector<Arc> > + ropts(arc_selector, opts.max_length, + opts.npath, opts.weighted); + RandGen(ifst, ofst, ropts); + } else if (opts.arc_selector == FAST_LOG_PROB_ARC_SELECTOR) { + FastLogProbArcSelector<Arc> arc_selector(seed); + RandGenOptions< FastLogProbArcSelector<Arc> > + ropts(arc_selector, opts.max_length, + opts.npath, opts.weighted); + RandGen(ifst, ofst, ropts); + } else { + LogProbArcSelector<Arc> arc_selector(seed); + RandGenOptions< LogProbArcSelector<Arc> > + ropts(arc_selector, opts.max_length, + opts.npath, opts.weighted); + RandGen(ifst, ofst, ropts); + } +} + + +// Client-facing prototype +void RandGen(const FstClass &ifst, MutableFstClass *ofst, int32 seed = time(0), + const RandGenOptions<RandArcSelection> &opts = + fst::RandGenOptions<fst::script::RandArcSelection>( + fst::script::UNIFORM_ARC_SELECTOR)); + +} // namespace script +} // namespace fst + + + +#endif // FST_SCRIPT_RANDGEN_H_ |