Initial commit

graphics/scaler.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/>.
+ *
+ */
+
+#ifndef GRAPHICS_SCALER_H
+#define GRAPHICS_SCALER_H
+
+#include "common/scummsys.h"
+#include "graphics/surface.h"
+
+namespace Graphics {
+class ManagedSurface;
+}
+
+// creates a 160x100 thumbnail for 320x200 games
+// and 160x120 thumbnail for 320x240 and 640x480 games
+// only 565 mode
+enum {
+	kThumbnailWidth = 160,
+	kThumbnailHeight1 = 100,
+	kThumbnailHeight2 = 120
+};
+
+/**
+ * Creates a thumbnail from the current screen (without overlay).
+ *
+ * @param surf	a surface (will always have 16 bpp after this for now)
+ * @return		false if a error occurred
+ */
+extern bool createThumbnailFromScreen(Graphics::Surface *surf);
+
+/**
+ * Creates a thumbnail from a buffer.
+ *
+ * @param surf      destination surface (will always have 16 bpp after this for now)
+ * @param pixels    raw pixel data
+ * @param w         width
+ * @param h         height
+ * @param palette   palette in RGB format
+ */
+extern bool createThumbnail(Graphics::Surface *surf, const uint8 *pixels, int w, int h, const uint8 *palette);
+
+/**
+ * Creates a thumbnail from a ManagedSurface.
+ *
+ * @param surf	destination surface (will always have 16 bpp after this for now)
+ * @param in	source surface to create thumbnail from
+ */
+extern bool createThumbnail(Graphics::Surface *surf, Graphics::ManagedSurface *in);
+
+#endif