1 files changed, 68 insertions, 0 deletions
diff --git a/src/graphics/Filter3x3.cpp b/src/graphics/Filter3x3.cpp
new file mode 100644
index 0000000..592c19e
--- /dev/null
+++ b/src/graphics/Filter3x3.cpp
@@ -0,0 +1,68 @@
+//
+//  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;
+}
+
+}