diff engine/core/vfs/dat/lzssdecoder.h @ 0:4a0efb7baf70

* Datasets becomes the new trunk and retires after that :-)
author mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
date Sun, 29 Jun 2008 18:44:17 +0000
parents
children 90005975cdbb
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/engine/core/vfs/dat/lzssdecoder.h	Sun Jun 29 18:44:17 2008 +0000
@@ -0,0 +1,65 @@
+/***************************************************************************
+ *   Copyright (C) 2005-2006 by the FIFE Team                              *
+ *   http://www.fifengine.de                                               *
+ *   This file is part of FIFE.                                            *
+ *                                                                         *
+ *   FIFE 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 St, Fifth Floor, Boston, MA  02110-1301  USA              *
+ ***************************************************************************/
+
+#ifndef FIFE_LZSSDECODER_H
+#define FIFE_LZSSDECODER_H
+
+// Standard C++ library includes
+
+// 3rd party library includes
+
+// FIFE includes
+#include "util/base/fife_stdint.h"
+#include "vfs/vfs.h"
+
+namespace FIFE {
+	/** A helper class for unpacking LZSS encoded data 
+	 * @bug just a quick&dirty LZSS implementation, optimized a bit
+	 *      see revision 719 for the original one and 795 for the broken optimized one
+	 * @bug the lzss decoder might very well crash on corrupt data.
+	 */
+	class LZSSDecoder {
+		public:
+			/** Constructor
+			 */
+			LZSSDecoder();
+
+			/** Destructor
+			 */
+			~LZSSDecoder();
+
+			/** Decodes from a file into a pointer.
+			 * @param input The VFS file to read from
+			 * @param output The memory location to write to
+			 * @param outputsize The size of the memory location in byte
+			 */
+			void decode(RawData* input, uint8_t* output, const uint32_t outputsize);
+
+		private:
+			uint32_t m_outlen;
+			uint32_t m_outindex;
+			void LZSSDecode(uint8_t* in, long len, uint8_t* out);
+
+	};
+
+}
+
+#endif