2 Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include "transfer_function.h"
25 using boost::shared_ptr;
28 TransferFunction::TransferFunction (bool inverse)
34 TransferFunction::~TransferFunction ()
36 boost::mutex::scoped_lock lm (_mutex);
38 for (map<int, double*>::const_iterator i = _luts.begin(); i != _luts.end(); ++i) {
46 TransferFunction::lut (int bit_depth) const
48 boost::mutex::scoped_lock lm (_mutex);
50 map<int, double*>::const_iterator i = _luts.find (bit_depth);
51 if (i != _luts.end ()) {
55 _luts[bit_depth] = make_lut (bit_depth);
56 return _luts[bit_depth];
60 TransferFunction::about_equal (shared_ptr<const TransferFunction> other, double) const
62 return _inverse == other->_inverse;