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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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+
+#ifndef LASTEXPRESS_BACKGROUND_H
+#define LASTEXPRESS_BACKGROUND_H
+
+/*
+ Background file format (.BG)
+
+ header:
+ uint32 {4} - position X on screen
+ uint32 {4} - position Y on screen
+ uint32 {4} - image width
+ uint32 {4} - image height
+ uint32 {4} - red colour channel data size
+ uint32 {4} - blue colour channel data size
+ uint32 {4} - green colour channel data size
+
+ data:
+ byte {x} - red colour channel data
+ byte {x} - blue colour channel data
+ byte {x} - green colour channel data
+*/
+
+#include "lastexpress/drawable.h"
+
+#include "common/stream.h"
+
+namespace LastExpress {
+
+class Background : public Drawable {
+public:
+ Background();
+ ~Background();
+
+ bool load(Common::SeekableReadStream *stream);
+
+ Common::Rect draw(Graphics::Surface *surface);
+
+private:
+ struct BackgroundHeader {
+ uint32 posX; ///< position X on screen
+ uint32 posY; ///< position Y on screen
+ uint32 width; ///< image width
+ uint32 height; ///< image height
+ uint32 redSize; ///< red color channel data size
+ uint32 blueSize; ///< blue color channel data size
+ uint32 greenSize; ///< green color channel data size
+ };
+
+ BackgroundHeader _header;
+ uint16 *_data; ///< decoded background data
+
+ byte *decodeComponent(Common::SeekableReadStream *in, uint32 inSize, uint32 outSize) const;
+};
+
+} // End of namespace LastExpress
+
+#endif // LASTEXPRESS_BACKGROUND_H