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 /*
  *  Copyright (c) 2015 Dmitry Kazakov <dimula73@gmail.com>
  *
  *  This program 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,
  *  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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
 #ifndef __KO_COMPOSITE_COLOR_TRANSFORMATION_H
 #define __KO_COMPOSITE_COLOR_TRANSFORMATION_H
 
 #include "KoColorTransformation.h"
 
 #include <QScopedPointer>
 
 
 /**
  * A class for storing a composite color transformation. All the
  * transformations added with appendTransform() are applied
  * sequentially to the process pixels.
  *
  * \p mode defines how the buffers are used while processing.
  *
  * When using INPLACE mode all transformations but the first one do
  * the conversion in place, that is in \p dst buffer. That is \p dst
  * is written at least N - 1 times, where N is the number of embedded
  * transformations.
  *
  * In BUFFERED mode all the transformations are called with distinct
  * src and dst buffers, which are created in temporary memory owned by
  * KoCompositeColorTransformation. Please note that this mode IS NOT
  * IMPLEMENTED YET!
  */
 class PIGMENTCMS_EXPORT KoCompositeColorTransformation : public KoColorTransformation
 {
 public:
     enum Mode {
         INPLACE = 0, /// transform pixels in place (in 'dst' buffer)
         BUFFERED /// transform using a temporary buffer (not implemented yet)
     };
 
 public:
     explicit KoCompositeColorTransformation(Mode mode);
     ~KoCompositeColorTransformation() override;
 
     void transform(const quint8 *src, quint8 *dst, qint32 nPixels) const override;
 
     /**
      * Append a transform to a composite. If \p transform is null,
      * nothing happens.
      */
     void appendTransform(KoColorTransformation *transform);
 
     /**
      * Convenience method that checks if the transformations in \p
      * transforms are not null and adds existent ones only. If there
      * is only one non-null transform, it is returned directly to
      * avoid extra virtual calls added by KoCompositeColorTransformation.
      */
     static KoColorTransformation* createOptimizedCompositeTransform(const QVector<KoColorTransformation*> transforms);
 
 private:
     struct Private;
     const QScopedPointer<Private> m_d;
 };
 
 #endif /* __KO_COMPOSITE_COLOR_TRANSFORMATION_H */