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//
// libavg - Media Playback Engine.
// Copyright (C) 2003-2014 Ulrich von Zadow
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Current versions can be found at www.libavg.de
//
#include "FilterNormalize.h"
#include "FilterIntensity.h"
#include <math.h>
namespace avg {
FilterNormalize::FilterNormalize(int stride)
: m_Stride(stride)
{
}
FilterNormalize::~FilterNormalize()
{
}
void FilterNormalize::applyInPlace(BitmapPtr pBmp)
{
int min;
int max;
pBmp->getMinMax(m_Stride, min, max);
if (m_Stride > 1) {
min -= 2;
max += 2;
}
float factor = 255.f/(max-min);
if (factor > 10) {
factor = 10;
}
FilterIntensity(-min, factor).applyInPlace(pBmp);
}
}
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