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graphics/scaler/scalebit.h

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program 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.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/*
+ * This file contains an example implementation of the Scale effect
+ * applied to a generic bitmap.
+ *
+ * You can find a high-level description of the effect at:
+ *
+ * https://www.scale2x.it
+ *
+ * Alternatively at the previous license terms, you are allowed to use this
+ * code in your program with these conditions:
+ * - the program is not used in commercial activities.
+ * - the whole source code of the program is released with the binary.
+ * - derivative works of the program are allowed.
+ */
+
+#ifndef SCALER_SCALEBIT_H
+#define SCALER_SCALEBIT_H
+
+#include "graphics/scalerplugin.h"
+
+int scale_precondition(unsigned scale, unsigned pixel, unsigned width, unsigned height);
+void scale(unsigned scale, void* void_dst, unsigned dst_slice, const void* void_src, unsigned src_slice, unsigned pixel, unsigned width, unsigned height);
+
+class AdvMameScaler : public Scaler {
+public:
+	AdvMameScaler(const Graphics::PixelFormat &format) : Scaler(format) { _factor = 2; }
+	uint increaseFactor() override;
+	uint decreaseFactor() override;
+protected:
+	virtual void scaleIntern(const uint8 *srcPtr, uint32 srcPitch,
+							uint8 *dstPtr, uint32 dstPitch, int width, int height, int x, int y) override;
+};
+
+#endif