context-dep-itf.h

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// itf/context-dep-itf.h

// Copyright 2009-2011     Microsoft Corporation;  Go Vivace Inc.

// 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_CONTEXT_DEP_ITF_H_
#define KALDI_ITF_CONTEXT_DEP_ITF_H_
#include "base/kaldi-common.h"

namespace kaldi {

class ContextDependencyInterface {
 public:
  virtual int ContextWidth() const = 0;

  virtual int CentralPosition() const = 0;

  virtual bool Compute(const std::vector<int32> &phoneseq, int32 pdf_class,
                       int32 *pdf_id) const = 0;

  virtual void GetPdfInfo(
      const std::vector<int32> &phones,  // list of phones
      const std::vector<int32> &num_pdf_classes,  // indexed by phone,
      std::vector<std::vector<std::pair<int32, int32> > > *pdf_info)
      const = 0;

  virtual void GetPdfInfo(
      const std::vector<int32> &phones,
      const std::vector<std::vector<std::pair<int32, int32> > > &pdf_class_pairs,
      std::vector<std::vector<std::vector<std::pair<int32, int32> > > > *pdf_info)
      const = 0;


  virtual int32 NumPdfs() const = 0;

  virtual ~ContextDependencyInterface() {};
  ContextDependencyInterface() {}

  virtual ContextDependencyInterface *Copy() const = 0;
 private:
  KALDI_DISALLOW_COPY_AND_ASSIGN(ContextDependencyInterface);
};
}  // namespace Kaldi


#endif