1 files changed, 56 insertions, 0 deletions
diff --git a/src/graphics/Filter.h b/src/graphics/Filter.h
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+++ b/src/graphics/Filter.h
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+//
+//  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
+//
+
+#ifndef _Filter_H_
+#define _Filter_H_
+
+#include "../api.h"
+#include "Bitmap.h"
+
+#include <boost/shared_ptr.hpp>
+
+namespace avg {
+
+// Base class for filters that operate on bitmaps. Derived classes need
+// to override either the applyInPlace or the apply function. The base-class
+// versions of these functions simply implement one function in terms of the
+// other.
+class AVG_API Filter
+{
+public:
+    Filter();
+    virtual ~Filter();
+
+    // In-Place Apply. Applies the filter to pBmp. The base-class
+    // version copies the bitmap after calling Apply (pBmp, pTempBmp).
+    virtual void applyInPlace(BitmapPtr pBmp);
+
+    // Applies the Filter to pBmpSource and returns the result
+    // The base-class version copies the bitmap before calling
+    // applyInPlace.
+    virtual BitmapPtr apply(BitmapPtr pBmpSource);
+};
+
+typedef boost::shared_ptr<Filter> FilterPtr;
+
+}
+ 
+#endif