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/* ============================================================
*
* This file is a part of digiKam project
* http://www.digikam.org
*
* Date : 2004-07-29
* Description : image levels manipulation methods.
*
* Copyright (C) 2004-2008 by Gilles Caulier <caulier dot gilles at gmail dot 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, 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.
*
* ============================================================ */
#ifndef IMAGELEVELS_H
#define IMAGELEVELS_H
#define CLAMP(x,l,u) ((x)<(l)?(l):((x)>(u)?(u):(x)))
/* Map RGB to intensity */
#define LEVELS_RGB_INTENSITY_RED 0.30
#define LEVELS_RGB_INTENSITY_GREEN 0.59
#define LEVELS_RGB_INTENSITY_BLUE 0.11
#define LEVELS_RGB_INTENSITY(r,g,b) ((r) * LEVELS_RGB_INTENSITY_RED + \
(g) * LEVELS_RGB_INTENSITY_GREEN + \
(b) * LEVELS_RGB_INTENSITY_BLUE)
// KDE includes.
#include <kurl.h>
// Local includes.
#include "dcolor.h"
#include "digikam_export.h"
namespace Digikam
{
class ImageLevelsPriv;
class ImageHistogram;
class DIGIKAM_EXPORT ImageLevels
{
public:
ImageLevels(bool sixteenBit);
~ImageLevels();
bool isDirty();
bool isSixteenBits();
void reset();
// Methods for to manipulate the levels data.
void levelsChannelReset(int channel);
void levelsAuto(ImageHistogram *hist);
void levelsChannelAuto(ImageHistogram *hist, int channel);
int levelsInputFromColor(int channel, const DColor& color);
void levelsBlackToneAdjustByColors(int channel, const DColor& color);
void levelsGrayToneAdjustByColors(int channel, const DColor& color);
void levelsWhiteToneAdjustByColors(int channel, const DColor& color);
void levelsCalculateTransfers();
float levelsLutFunc(int n_channels, int channel, float value);
void levelsLutSetup(int nchannels);
void levelsLutProcess(uchar *srcPR, uchar *destPR, int w, int h);
// Methods for to set manually the levels values.
void setLevelGammaValue(int Channel, double val);
void setLevelLowInputValue(int Channel, int val);
void setLevelHighInputValue(int Channel, int val);
void setLevelLowOutputValue(int Channel, int val);
void setLevelHighOutputValue(int Channel, int val);
double getLevelGammaValue(int Channel);
int getLevelLowInputValue(int Channel);
int getLevelHighInputValue(int Channel);
int getLevelLowOutputValue(int Channel);
int getLevelHighOutputValue(int Channel);
// Methods for to save/load the levels values to/from a Gimp levels text file.
bool saveLevelsToGimpLevelsFile(const KURL& fileUrl);
bool loadLevelsFromGimpLevelsFile(const KURL& fileUrl);
private:
ImageLevelsPriv* d;
};
} // NameSpace Digikam
#endif /* IMAGELEVELS_H */
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