/*
Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
- This program is free software; you can redistribute it and/or modify
+ This file is part of libdcp.
+
+ libdcp is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
- This program is distributed in the hope that it will be useful,
+ libdcp 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 General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with libdcp. If not, see <http://www.gnu.org/licenses/>.
+
+ In addition, as a special exception, the copyright holders give
+ permission to link the code of portions of this program with the
+ OpenSSL library under certain conditions as described in each
+ individual source file, and distribute linked combinations
+ including the two.
+ You must obey the GNU General Public License in all respects
+ for all of the code used other than OpenSSL. If you modify
+ file(s) with this exception, you may extend this exception to your
+ version of the file(s), but you are not obligated to do so. If you
+ do not wish to do so, delete this exception statement from your
+ version. If you delete this exception statement from all source
+ files in the program, then also delete it here.
*/
#include "transfer_function.h"
using std::pow;
using std::map;
+using std::pair;
+using std::make_pair;
+using boost::shared_ptr;
using namespace dcp;
TransferFunction::~TransferFunction ()
{
- for (map<int, float*>::const_iterator i = _luts.begin(); i != _luts.end(); ++i) {
+ boost::mutex::scoped_lock lm (_mutex);
+
+ for (map<pair<int, bool>, double*>::const_iterator i = _luts.begin(); i != _luts.end(); ++i) {
delete[] i->second;
}
_luts.clear ();
}
-float const *
-TransferFunction::lut (int bit_depth) const
+double const *
+TransferFunction::lut (int bit_depth, bool inverse) const
{
- map<int, float*>::const_iterator i = _luts.find (bit_depth);
+ boost::mutex::scoped_lock lm (_mutex);
+
+ map<pair<int, bool>, double*>::const_iterator i = _luts.find (make_pair (bit_depth, inverse));
if (i != _luts.end ()) {
return i->second;
}
- _luts[bit_depth] = make_lut (bit_depth);
- return _luts[bit_depth];
+ _luts[make_pair(bit_depth, inverse)] = make_lut (bit_depth, inverse);
+ return _luts[make_pair(bit_depth, inverse)];
}