/usr/include/srecord/input/filter/unfill.h is in libsrecord-dev 1.58-1.1ubuntu1.
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// srecord - manipulate eprom load files
// Copyright (C) 2001, 2002, 2005-2010 Peter Miller
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see
// <http://www.gnu.org/licenses/>.
//
#ifndef SRECORD_INPUT_FILTER_UNFILL_H
#define SRECORD_INPUT_FILTER_UNFILL_H
#include <srecord/input/filter.h>
#include <srecord/record.h>
namespace srecord
{
/**
* The srecord::input_filter_unfill class is used to represent a filter
* which makes holes in the data wherever a specified data byte value
* appears.
*
* This is the inverse of the srecord::input_filter_fill class.
*
* Usually this is used to find the actual limits of data from an
* extracted EPROM image; you can specify a minimum run length of the
* same byte, so that you don't simply get a 1/256 reduction in density
* in the middle of "real" data.
*/
class input_filter_unfill:
public input_filter
{
public:
/**
* The destructor.
*/
virtual ~input_filter_unfill();
private:
/**
* The constructor.
*
* @param deeper
* The deeper input source to be filtered.
* @param value
* The value of the bytes to be turned into holes.
* @param minimum
* The minimum run length to be considered a hole.
*/
input_filter_unfill(const input::pointer &deeper, int value, int minimum);
public:
/**
* The create class method is used to create new dynamically
* allocated instances of this class.
*
* @param deeper
* The incoming data source to be filtered
* @param value
* The value of the bytes to be turned into holes.
* @param minimum
* The minimum run length to be considered a hole.
*/
static pointer create(const input::pointer &deeper, int value, int minimum);
protected:
// See base class for documentation.
bool read(record &record);
private:
/**
* The fill_value instance variable is used to remember the value
* of the bytes to be turned into holes.
*/
record::data_t fill_value;
/**
* The fill_minimum instance variable is used to remember the
* minimum run length to be considered a hole.
*/
record::address_t fill_minimum;
/**
* The buffer instance variable is used to remember the data
* that has been read from the deeper input source and is being
* processed to unfill certain valued bytes.
*/
record buffer;
/**
* The fill_value instance variable is used to remember where we
* are up to in the "buffer" instance variable.
*/
size_t buffer_pos;
/**
* The default constructor. Do not use.
*/
input_filter_unfill();
/**
* The copy constructor. Do not use.
*/
input_filter_unfill(const input_filter_unfill &);
/**
* The assignment operator. Do not use.
*/
input_filter_unfill &operator=(const input_filter_unfill &);
};
};
#endif // SRECORD_INPUT_FILTER_UNFILL_H
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