diff --git a/framebuffer.h b/framebuffer.h
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--- /dev/null
+++ b/framebuffer.h
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+/*
+  Copyright © 2015 Hasan Yavuz Özderya
+
+  This file is part of serialplot.
+
+  serialplot is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  serialplot 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 General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with serialplot.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef FRAMEBUFFER_H
+#define FRAMEBUFFER_H
+
+#include <qwt_series_data.h>
+#include <QPointF>
+#include <QRectF>
+
+class FrameBuffer : public QwtSeriesData<QPointF>
+{
+public:
+    FrameBuffer(size_t size);
+
+    void resize(size_t size);
+    void addSamples(QVector<double> samples);
+    void clear(); // fill 0
+
+    // QwtSeriesData implementations
+    size_t size() const;
+    QPointF sample(size_t i) const;
+    QRectF boundingRect() const;
+
+private:
+    QVector<double> data;
+};
+
+#endif // FRAMEBUFFER_H