1
2// Licensed under the Apache License, Version 2.0 (the "License");
3// you may not use this file except in compliance with the License.
4// You may obtain a copy of the License at
5//
6//     http://www.apache.org/licenses/LICENSE-2.0
7//
8// Unless required by applicable law or agreed to in writing, software
9// distributed under the License is distributed on an "AS IS" BASIS,
10// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11// See the License for the specific language governing permissions and
12// limitations under the License.
13//
14// Copyright 2005-2010 Google, Inc.
15// Author: jpr@google.com (Jake Ratkiewicz)
16
17#ifndef FST_SCRIPT_REWEIGHT_H_
18#define FST_SCRIPT_REWEIGHT_H_
19
20#include <vector>
21using std::vector;
22
23#include <fst/script/arg-packs.h>
24#include <fst/script/fst-class.h>
25#include <fst/script/weight-class.h>
26#include <fst/reweight.h>
27
28namespace fst {
29namespace script {
30
31typedef args::Package<MutableFstClass *, const vector<WeightClass> &,
32                      ReweightType> ReweightArgs;
33
34template<class Arc>
35void Reweight(ReweightArgs *args) {
36  MutableFst<Arc> *fst = args->arg1->GetMutableFst<Arc>();
37  typedef typename Arc::Weight Weight;
38  vector<Weight> potentials(args->arg2.size());
39
40  for (unsigned i = 0; i < args->arg2.size(); ++i) {
41    potentials[i] = *(args->arg2[i].GetWeight<Weight>());
42  }
43
44  Reweight(fst, potentials, args->arg3);
45}
46
47void Reweight(MutableFstClass *fst, const vector<WeightClass> &potential,
48              ReweightType reweight_type);
49
50}  // namespace script
51}  // namespace fst
52
53#endif  // FST_SCRIPT_REWEIGHT_H_
54