1 files changed, 69 insertions, 0 deletions
diff --git a/src/graphics/FilterBlur.cpp b/src/graphics/FilterBlur.cpp
new file mode 100644
index 0000000..99f48e7
--- /dev/null
+++ b/src/graphics/FilterBlur.cpp
@@ -0,0 +1,69 @@
+//
+//  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 "FilterBlur.h"
+#include "Filterfill.h"
+#include "Pixel8.h"
+#include "Bitmap.h"
+
+#include "../base/Exception.h"
+
+#include <iostream>
+#include <math.h>
+
+using namespace std;
+
+namespace avg {
+    
+FilterBlur::FilterBlur()
+{
+}
+
+FilterBlur::~FilterBlur()
+{
+}
+
+BitmapPtr FilterBlur::apply(BitmapPtr pBmpSrc)
+{
+    AVG_ASSERT(pBmpSrc->getPixelFormat() == I8);
+    
+    IntPoint Size(pBmpSrc->getSize().x-2, pBmpSrc->getSize().y-2);
+    BitmapPtr pDestBmp = BitmapPtr(new Bitmap(Size, I8, pBmpSrc->getName()));
+    int srcStride = pBmpSrc->getStride();
+    int destStride = pDestBmp->getStride();
+    unsigned char * pSrcLine = pBmpSrc->getPixels()+srcStride+1;
+    unsigned char * pDestLine = pDestBmp->getPixels();
+    for (int y = 0; y < Size.y; ++y) {
+        unsigned char * pSrcPixel = pSrcLine;
+        unsigned char * pDestPixel = pDestLine;
+        for (int x = 0; x < Size.x; ++x) {
+            *pDestPixel = (*(pSrcPixel-1) + *(pSrcPixel)*4 + *(pSrcPixel+1)
+                    +*(pSrcPixel-srcStride)+*(pSrcPixel+srcStride)+4)/8;
+            ++pSrcPixel;
+            ++pDestPixel;
+        }
+        pSrcLine += srcStride;
+        pDestLine += destStride;
+    }
+    return pDestBmp;
+}
+
+}