2 Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
4 This file is part of libdcp.
6 libdcp is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 libdcp is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with libdcp. If not, see <http://www.gnu.org/licenses/>.
20 #include "transfer_function.h"
27 using boost::shared_ptr;
30 TransferFunction::~TransferFunction ()
32 boost::mutex::scoped_lock lm (_mutex);
34 for (map<pair<int, bool>, double*>::const_iterator i = _luts.begin(); i != _luts.end(); ++i) {
42 TransferFunction::lut (int bit_depth, bool inverse) const
44 boost::mutex::scoped_lock lm (_mutex);
46 map<pair<int, bool>, double*>::const_iterator i = _luts.find (make_pair (bit_depth, inverse));
47 if (i != _luts.end ()) {
51 _luts[make_pair(bit_depth, inverse)] = make_lut (bit_depth, inverse);
52 return _luts[make_pair(bit_depth, inverse)];