online-timing.h

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// online2/online-timing.h

// Copyright 2014   Johns Hopkins University (author: Daniel Povey)

// 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.


#ifndef KALDI_ONLINE2_ONLINE_TIMING_H_
#define KALDI_ONLINE2_ONLINE_TIMING_H_

#include <string>
#include <vector>
#include <deque>

#include "base/timer.h"
#include "base/kaldi-error.h"

namespace kaldi {


class OnlineTimer;

class OnlineTimingStats {
 public:
  OnlineTimingStats();
  void Print(bool online = true);
 protected:
  friend class OnlineTimer;
  int32 num_utts_;
  // all times are in seconds.
  double total_audio_; // total time of audio.
  double total_time_taken_;  // total time spent processing the audio.
  double total_time_waited_; // total time we pretended to wait (but just
                             // increased the waited_ counter)... zero if you
                             // called SleepUntil instead of WaitUntil().
  double max_delay_; // maximum delay at utterance end.
  std::string max_delay_utt_;
};




class OnlineTimer {
 public:
  OnlineTimer(const std::string &utterance_id);

  void SleepUntil(double cur_utterance_length);

  void WaitUntil(double cur_utterance_length);
  
  void OutputStats(OnlineTimingStats *stats);

  double Elapsed();
  
 private:
  std::string utterance_id_;
  Timer timer_;
  // all times are in seconds.
  double waited_;
  double utterance_length_;
};


}  // namespace kaldi



#endif  // KALDI_ONLINE2_ONLINE_TIMING_