decodable-itf.h

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// itf/decodable-itf.h

// Copyright 2009-2011  Microsoft Corporation;  Saarland University;
//                      Mirko Hannemann;  Go Vivace Inc.;
//                2013  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_ITF_DECODABLE_ITF_H_
#define KALDI_ITF_DECODABLE_ITF_H_ 1
#include "base/kaldi-common.h"

namespace kaldi {


class DecodableInterface {
 public:
  virtual BaseFloat LogLikelihood(int32 frame, int32 index) = 0;

  virtual bool IsLastFrame(int32 frame) const = 0;

  virtual int32 NumFramesReady() const {
    KALDI_ERR << "NumFramesReady() not implemented for this decodable type.";
    return -1;
  }

  virtual int32 NumIndices() const = 0;

  virtual ~DecodableInterface() {}
};
}  // namespace Kaldi

#endif  // KALDI_ITF_DECODABLE_ITF_H_