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engines/macventure/container.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/>.
+ *
+ */
+
+/*
+ * Based on
+ * WebVenture (c) 2010, Sean Kasun
+ * https://github.com/mrkite/webventure, http://seancode.com/webventure/
+ *
+ * Used with explicit permission from the author
+ */
+
+#ifndef MACVENTURE_CONTAINER_H
+#define MACVENTURE_CONTAINER_H
+
+#include "macventure/macventure.h"
+
+#include "common/file.h"
+#include "common/fs.h"
+
+namespace MacVenture {
+
+struct ItemGroup {
+	uint32 bitOffset; //It's really uint24
+	uint32 offset; //It's really uint24
+	uint32 lengths[64];
+};
+
+typedef uint32 ContainerHeader;
+
+class Container {
+
+public:
+	Container(const Common::Path &filename);
+	~Container();
+
+public:
+	/**
+	* Must be called before retrieving an object.
+	*/
+	uint32 getItemByteSize(uint32 id);
+
+	/**
+	* getItemByteSize should be called before this one
+	*/
+	Common::SeekableReadStream *getItem(uint32 id);
+
+protected:
+
+	bool _simplified;
+
+	uint _lenObjs; // In the case of simple container, length of an object
+	uint _numObjs;
+
+	ContainerHeader _header;
+
+	Common::Array<uint16> _huff; // huffman masks
+	Common::Array<uint8> _lens; // huffman lengths
+	Common::Array<ItemGroup> _groups;
+
+	Common::Path _filename;
+	Common::File _file;
+	Common::SeekableReadStream *_res;
+
+};
+
+
+} // End of namespace MacVenture
+
+#endif