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Diffstat (limited to 'src/imaging/FilterWipeBorder.cpp')
-rw-r--r-- | src/imaging/FilterWipeBorder.cpp | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/src/imaging/FilterWipeBorder.cpp b/src/imaging/FilterWipeBorder.cpp new file mode 100644 index 0000000..dd09068 --- /dev/null +++ b/src/imaging/FilterWipeBorder.cpp @@ -0,0 +1,70 @@ +// +// 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 "FilterWipeBorder.h" + +#include "../base/Exception.h" + +#include <iostream> +#include <math.h> +#include <string.h> + +using namespace std; + +namespace avg { + +FilterWipeBorder::FilterWipeBorder(int numPixels) + : m_NumPixels(numPixels) +{ +} + +FilterWipeBorder::~FilterWipeBorder() +{ +} + +void FilterWipeBorder::applyInPlace(BitmapPtr pBmp) +{ + AVG_ASSERT(pBmp->getPixelFormat() == I8); + if (m_NumPixels != 0) { + int stride = pBmp->getStride(); + unsigned char * pPixels = pBmp->getPixels(); + IntPoint size = pBmp->getSize(); + IntPoint activeSize = pBmp->getSize()-IntPoint(2*m_NumPixels, 2*m_NumPixels); + + unsigned char * pSrcLine = pPixels+stride*m_NumPixels+m_NumPixels; + for (int y = m_NumPixels-1; y >= 0; --y) { + memcpy(pPixels+stride*y+m_NumPixels, pSrcLine, activeSize.x); + } + pSrcLine = pPixels+stride*(size.y-m_NumPixels-1)+m_NumPixels; + for (int y = size.y-m_NumPixels; y < size.y; ++y) { + memcpy(pPixels+stride*y+m_NumPixels, pSrcLine, activeSize.x); + } + + for (int y = 0; y < size.y; ++y) { + unsigned char src = *(pPixels+stride*y+m_NumPixels); + memset(pPixels+stride*y, src, m_NumPixels); + src = *(pPixels+stride*y+size.x-m_NumPixels-1); + memset(pPixels+stride*y+size.x-m_NumPixels, src, m_NumPixels); + } + } +} + +} |