X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Fmodified_gamma_transfer_function.cc;h=7522cde7a01e281fcf10451e0fa2761b32983140;hb=75a4d1603551f5405b89f199e7f02b82b2554746;hp=fe9266bdbbd5d08f965e4d1138452751682576d6;hpb=b9559c74878aba5cada36e8807ff2dd66f406859;p=libdcp.git

diff --git a/src/modified_gamma_transfer_function.cc b/src/modified_gamma_transfer_function.cc
index fe9266bd..7522cde7 100644
--- a/src/modified_gamma_transfer_function.cc
+++ b/src/modified_gamma_transfer_function.cc
@@ -1,20 +1,34 @@
 /*
     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 "modified_gamma_transfer_function.h"
@@ -25,9 +39,8 @@ using boost::shared_ptr;
 using boost::dynamic_pointer_cast;
 using namespace dcp;
 
-ModifiedGammaTransferFunction::ModifiedGammaTransferFunction (bool inverse, double power, double threshold, double A, double B)
-	: TransferFunction (inverse)
-	, _power (power)
+ModifiedGammaTransferFunction::ModifiedGammaTransferFunction (double power, double threshold, double A, double B)
+	: _power (power)
 	, _threshold (threshold)
 	, _A (A)
 	, _B (B)
@@ -36,11 +49,11 @@ ModifiedGammaTransferFunction::ModifiedGammaTransferFunction (bool inverse, doub
 }
 
 double *
-ModifiedGammaTransferFunction::make_lut (int bit_depth) const
+ModifiedGammaTransferFunction::make_lut (int bit_depth, bool inverse) const
 {
 	int const bit_length = int(std::pow(2.0f, bit_depth));
 	double* lut = new double[bit_length];
-	if (_inverse) {
+	if (inverse) {
 		double const threshold = _threshold / _B;
 		for (int i = 0; i < bit_length; ++i) {
 			double const p = static_cast<double> (i) / (bit_length - 1);
@@ -67,10 +80,6 @@ ModifiedGammaTransferFunction::make_lut (int bit_depth) const
 bool
 ModifiedGammaTransferFunction::about_equal (shared_ptr<const TransferFunction> other, double epsilon) const
 {
-	if (!TransferFunction::about_equal (other, epsilon)) {
-		return false;
-	}
-	
 	shared_ptr<const ModifiedGammaTransferFunction> o = dynamic_pointer_cast<const ModifiedGammaTransferFunction> (other);
 	if (!o) {
 		return false;