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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 "FilterflipX.h"
#include "Pixel32.h"
#include "../base/Exception.h"
namespace avg {
FilterFlipX::FilterFlipX()
: Filter()
{
}
FilterFlipX::~FilterFlipX()
{
}
BitmapPtr FilterFlipX::apply(BitmapPtr pBmpSource)
{
IntPoint Size = pBmpSource->getSize();
BitmapPtr pBmpDest(new Bitmap(Size, pBmpSource->getPixelFormat(),
pBmpSource->getName()));
unsigned char* pSrcLine = pBmpSource->getPixels();
unsigned char* pDestLine = pBmpDest->getPixels();
for (int y = 0; y < Size.y; y++) {
switch (pBmpSource->getBytesPerPixel()) {
case 1: {
unsigned char * pSrc = pSrcLine;
unsigned char * pDest = pDestLine+Size.x-1;
for (int x = 0; x < Size.x; x++) {
*pDest = *pSrc;
pSrc++;
pDest--;
}
}
break;
case 4: {
Pixel32 * pSrc = (Pixel32*)pSrcLine;
Pixel32 * pDest = (Pixel32*)pDestLine+Size.x-1;
for (int x = 0; x < Size.x; x++) {
*pDest = *pSrc;
pSrc++;
pDest--;
}
}
break;
default:
AVG_ASSERT(false);
}
pSrcLine += pBmpSource->getStride();
pDestLine += pBmpDest->getStride();
}
return pBmpDest;
}
}
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