// bin/sum-mllt-accs.cc
  
  // Copyright 2014 LINSE/UFSC; Augusto Henrique Hentz
  
  // 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 "util/common-utils.h"
  #include "transform/mllt.h"
  
  int main(int argc, char *argv[]) {
    try {
      using namespace kaldi;
      typedef kaldi::int32 int32;
  
      const char *usage =
          "Sum stats obtained with gmm-acc-mllt.
  "
          "Usage: sum-mllt-accs [options] <stats-out> <stats-in1> <stats-in2> ...
  ";
  
      bool binary = true;
      ParseOptions po(usage);
      po.Register("binary", &binary, "Write accumulators in binary mode.");
      po.Read(argc, argv);
  
      if (po.NumArgs() < 2) {
        po.PrintUsage();
        exit(1);
      }
  
      MlltAccs mllt_accs;
      std::string stats_out_filename = po.GetArg(1);
  
      for (int32 i = 2; i <= po.NumArgs(); i++) {
        bool binary_in, add = true;
        Input ki(po.GetArg(i), &binary_in);
        mllt_accs.Read(ki.Stream(), binary_in, add);
      }
  
      Output ko(stats_out_filename, binary);
      mllt_accs.Write(ko.Stream(), binary);
      return 0;
    } catch(const std::exception &e) {
      std::cerr << e.what();
      return -1;
    }
  }