1 files changed, 78 insertions, 0 deletions
diff --git a/src/graphics/FilterResizeGaussian.cpp b/src/graphics/FilterResizeGaussian.cpp
new file mode 100644
index 0000000..aae6416
--- /dev/null
+++ b/src/graphics/FilterResizeGaussian.cpp
@@ -0,0 +1,78 @@
+//  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 "FilterResizeGaussian.h"
+#include "Bitmap.h"
+#include "TwoPassScale.h"
+
+#include "../base/Exception.h"
+
+namespace avg {
+
+FilterResizeGaussian::FilterResizeGaussian(const IntPoint& newSize, float radius)
+    : m_NewSize(newSize),
+      m_Radius(radius)
+{
+}
+
+BitmapPtr FilterResizeGaussian::apply(BitmapPtr pBmpSrc)
+{
+    int bpp = pBmpSrc->getBytesPerPixel();
+    AVG_ASSERT(bpp==4 || bpp==3 || bpp==1);
+
+    BitmapPtr pBmpDest = BitmapPtr(new Bitmap(m_NewSize, 
+            pBmpSrc->getPixelFormat(), pBmpSrc->getName()+"_resized"));
+
+    GaussianContribDef f(m_Radius);
+    switch (bpp) {
+        case 4:
+            {
+                TwoPassScale<CDataRGBA_UBYTE> sS(f);
+                sS.Scale((CDataRGBA_UBYTE::PixelClass *) pBmpSrc->getPixels(), 
+                        pBmpSrc->getSize(), pBmpSrc->getStride(), 
+                        (CDataRGBA_UBYTE::PixelClass *) pBmpDest->getPixels(),
+                        pBmpDest->getSize(), pBmpDest->getStride());
+            }
+            break;
+        case 3:
+            {
+                TwoPassScale <CDataRGB_UBYTE> sS(f);
+                sS.Scale((CDataRGB_UBYTE::PixelClass *) pBmpSrc->getPixels(), 
+                        pBmpSrc->getSize(), pBmpSrc->getStride(), 
+                        (CDataRGB_UBYTE::PixelClass *) pBmpDest->getPixels(),
+                        pBmpDest->getSize(), pBmpDest->getStride());
+            }
+            break;
+        case 1:
+            {
+                TwoPassScale <CDataA_UBYTE> sS(f);
+                sS.Scale((CDataA_UBYTE::PixelClass *) pBmpSrc->getPixels(), 
+                        pBmpSrc->getSize(), pBmpSrc->getStride(), 
+                        (CDataA_UBYTE::PixelClass *) pBmpDest->getPixels(),
+                        pBmpDest->getSize(), pBmpDest->getStride());
+            }
+            break;
+        default:
+            AVG_ASSERT(false);
+    }
+    return pBmpDest;
+}
+
+}
+