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// Copyright (C) 2003--2004 Ronan Collobert (collober@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.
//
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
// IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
// NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef FRAME_SELECTOR_DATA_SET_INC
#define FRAME_SELECTOR_DATA_SET_INC
#include "DataSet.h"
namespace Torch {
/** A dataset used to select some frames of another dataset.
It takes a dataset in the constructor. Then you call
select functions to select frames. After that, when
you will do a #setExample()# the example of the previous
dataset will be returned in #inputs# and #targets# fields,
with the right frames...
@author Ronan Collobert (collober@idiap.ch)
*/
class FrameSelectorDataSet : public DataSet
{
private:
Sequence *inputs_buffer;
Sequence *targets_buffer;
public:
/// DataSet where we will select frames
DataSet *data;
/// Number of input selected frames, for each example
int *n_selected_input_frames;
/// Number of target selected frames, for each example
int *n_selected_target_frames;
/// Indices of input selected frames, for each example
int **input_frames_indices;
/// Indices of target selected frames, for each example
int **target_frames_indices;
///
FrameSelectorDataSet(DataSet *data_);
/** Select input frames of the example #t#.
Frames indices are given by #frames_indices_#.
The size of #frames_indices_# is given by #n_frames_#.
Takes in account pushed subsets.
*/
void selectInputFrames(int t_, int *frames_indices_, int n_frames_);
/// Same as #selectInputFrames()#, but for targets.
void selectTargetFrames(int t_, int *frames_indices_, int n_frames_);
/** Unselect inputs frames of the example #t#.
Takes in account pushed subsets.
*/
void unselectInputFrames(int t_);
/** Unselect targets frames of the example #t#.
Takes in account pushed subsets.
*/
void unselectTargetFrames(int t_);
virtual void preProcess(PreProcessing *pre_processing);
virtual void getNumberOfFrames(int t_, int *n_input_frames_, int *n_target_frames_);
virtual void setRealExample(int t, bool set_inputs=true, bool set_targets=true);
virtual void pushExample();
virtual void popExample();
//-----
virtual ~FrameSelectorDataSet();
};
}
#endif
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