// Copyright (C) 2003--2004 Johnny Mariethoz (Johnny.Mariethoz@idiap.ch)
//                
// This file is part of Torch 3.1.
//
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
// 3. The name of the author may not be used to endorse or promote products
//    derived from this software without specific prior written permission.
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#ifndef HTK_DATA_SET_INC
#define HTK_DATA_SET_INC

#include "MemoryDataSet.h"
#include "MeanVarNorm.h"
#include "IOHTK.h"
#include "LexiconInfo.h"

namespace Torch {

/** This dataset can deal with the HTK format for features and targets.

	@see MatDataSet
	@see IOHTK
	@see IOHTKTarget
	@author Johnny Mariethoz (Johnny.Mariethoz@idiap.ch)
*/
class HTKDataSet : public MemoryDataSet
{
  private:
    void init_(IOSequence *io_file, int n_inputs_, int n_targets_);
    Allocator *io_allocator;

  public:
    int n_per_frame;

    ///
    HTKDataSet(const char *inputs_filenames, bool one_file_is_one_sequence, int max_load, const char * targets_filename = NULL, LexiconInfo* lex_=NULL, bool words=true);

    ///
    HTKDataSet(char **inputs_filenames, char ** targets_filename, int n_files_, bool one_file_is_one_sequence, int max_load, LexiconInfo* lex_=NULL, bool words=true);

    virtual ~HTKDataSet();
};

}

#endif
