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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.
+ *
+ */
+
+#ifndef ZVISION_LZSS_STREAM_H
+#define ZVISION_LZSS_STREAM_H
+
+#include "common/stream.h"
+#include "common/array.h"
+
+namespace Common {
+class SeekableReadStream;
+}
+
+namespace ZVision {
+
+class LzssReadStream : public Common::ReadStream {
+public:
+ /**
+ * A class that decompresses LZSS data and implements ReadStream for easy access
+ * to the decompiled data.
+ *
+ * @param source The source data
+ */
+ LzssReadStream(Common::SeekableReadStream *source);
+
+private:
+ enum {
+ BLOCK_SIZE = 0x1000
+ };
+
+private:
+ Common::SeekableReadStream *_source;
+ byte _window[BLOCK_SIZE];
+ uint _windowCursor;
+ bool _eosFlag;
+
+public:
+ bool eos() const;
+ uint32 read(void *dataPtr, uint32 dataSize);
+
+private:
+ /**
+ * Decompress the next <numberOfBytes> from the source stream. Or until EOS
+ *
+ * @param numberOfBytes How many bytes to decompress. This is a count of source bytes, not destination bytes
+ */
+ uint32 decompressBytes(byte *destination, uint32 numberOfBytes);
+};
+
+}
+
+#endif