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engines/gnap/datarchive.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 GNAP_DATARCHIVE_H
+#define GNAP_DATARCHIVE_H
+
+#include "common/array.h"
+#include "common/events.h"
+#include "common/file.h"
+#include "common/memstream.h"
+#include "common/random.h"
+#include "common/str.h"
+#include "common/substream.h"
+#include "common/system.h"
+#include "engines/engine.h"
+
+namespace Gnap {
+
+struct DatEntry {
+	uint32 _ofs;
+	uint32 _outSize1;
+	uint32 _type;
+	uint32 _outSize2;
+};
+
+class DatArchive {
+public:
+	DatArchive(const char *filename);
+	~DatArchive();
+	byte *load(int index);
+	int getCount() const { return _entriesCount; }
+	uint32 getEntryType(int index) { return _entries[index]._type; }
+	uint32 getEntrySize(int index) { return _entries[index]._outSize1; }
+protected:
+	Common::File *_fd;
+	int _entriesCount;
+	DatEntry *_entries;
+};
+
+const int kMaxDatArchives = 2;
+
+class DatManager {
+public:
+	DatManager();
+	~DatManager();
+	void open(int index, const char *filename);
+	void close(int index);
+	byte *loadResource(int resourceId);
+	uint32 getResourceType(int resourceId);
+	uint32 getResourceSize(int resourceId);
+protected:
+	DatArchive *_datArchives[kMaxDatArchives];
+};
+
+int ridToDatIndex(int resourceId);
+int ridToEntryIndex(int resourceId);
+int makeRid(int datIndex, int entryIndex);
+
+} // End of namespace Gnap
+
+#endif // GNAP_DATARCHIVE_H