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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 "Filter3x3.h"
#include "Pixeldefs.h"
#include "../base/Exception.h"
namespace avg {
Filter3x3::Filter3x3(float Mat[3][3])
: Filter()
{
for (int y = 0; y < 3; y++) {
for (int x = 0; x < 3; x++) {
m_Mat[y][x] = Mat[y][x];
}
}
}
Filter3x3::~Filter3x3()
{
}
BitmapPtr Filter3x3::apply(BitmapPtr pBmpSource)
{
IntPoint newSize(pBmpSource->getSize().x-2, pBmpSource->getSize().y-2);
BitmapPtr pNewBmp(new Bitmap(newSize, pBmpSource->getPixelFormat(),
pBmpSource->getName()+"_filtered"));
for (int y = 0; y < newSize.y; y++) {
const unsigned char * pSrc = pBmpSource->getPixels()+y*pBmpSource->getStride();
unsigned char * pDest = pNewBmp->getPixels()+y*pNewBmp->getStride();
switch (pBmpSource->getBytesPerPixel()) {
case 4:
convolveLine<Pixel32>(pSrc, pDest, newSize.x, pBmpSource->getStride());
break;
case 3:
convolveLine<Pixel24>(pSrc, pDest, newSize.x, pBmpSource->getStride());
break;
default:
AVG_ASSERT(false);
}
}
return pNewBmp;
}
}
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