1 files changed, 56 insertions, 0 deletions
diff --git a/src/graphics/FilterIntensity.cpp b/src/graphics/FilterIntensity.cpp
new file mode 100644
index 0000000..3ffdd30
--- /dev/null
+++ b/src/graphics/FilterIntensity.cpp
@@ -0,0 +1,56 @@
+//
+//  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 "FilterIntensity.h"
+
+#include "../base/Exception.h"
+
+#include <math.h>
+
+namespace avg {
+
+FilterIntensity::FilterIntensity(int offset, float factor)
+  : m_Offset(offset),
+    m_Factor(factor)
+{
+}
+
+FilterIntensity::~FilterIntensity()
+{
+}
+
+void FilterIntensity::applyInPlace(BitmapPtr pBmp)
+{
+    AVG_ASSERT(pBmp->getPixelFormat() == I8);
+    unsigned char * pLine = pBmp->getPixels();
+    IntPoint size = pBmp->getSize();
+    for (int y = 0; y < size.y; ++y) {
+        unsigned char * pPixel = pLine;
+        for (int x = 0; x < size.x; ++x) {
+            *pPixel = (unsigned char)((*pPixel+m_Offset)*m_Factor);
+            ++pPixel;
+        }
+        pLine = pLine + pBmp->getStride();
+    }
+}
+
+}
+