Initial community commit

Src/external_dependencies/openmpt-trunk/include/ancient/src/XPKMain.hpp

@@ -0,0 +1,54 @@
+/* Copyright (C) Teemu Suutari */
+
+#ifndef XPKMAIN_HPP
+#define XPKMAIN_HPP
+
+#include "Decompressor.hpp"
+#include "XPKDecompressor.hpp"
+
+#include <vector>
+
+namespace ancient::internal
+{
+
+class XPKMain : public Decompressor
+{
+friend class XPKDecompressor;
+public:
+	XPKMain(const Buffer &packedData,bool verify,uint32_t recursionLevel);
+
+	virtual ~XPKMain();
+
+	virtual const std::string &getName() const noexcept override final;
+	virtual size_t getPackedSize() const noexcept override final;
+	virtual size_t getRawSize() const noexcept override final;
+
+	virtual void decompressImpl(Buffer &rawData,bool verify) override final;
+
+	static bool detectHeader(uint32_t hdr) noexcept;
+
+	static std::shared_ptr<Decompressor> create(const Buffer &packedData,bool exactSizeKnown,bool verify);
+
+	// Can be used to create directly decoder for chunk (needed by CYB2)
+	static std::shared_ptr<XPKDecompressor> createDecompressor(uint32_t type,uint32_t recursionLevel,const Buffer &buffer,std::shared_ptr<XPKDecompressor::State> &state,bool verify);
+
+private:
+	static void registerDecompressor(bool(*detect)(uint32_t),std::shared_ptr<XPKDecompressor>(*create)(uint32_t,uint32_t,const Buffer&,std::shared_ptr<XPKDecompressor::State>&,bool));
+	static constexpr uint32_t getMaxRecursionLevel() noexcept { return 4; }
+
+	template <typename F>
+	void forEachChunk(F func) const;
+
+	const Buffer	&_packedData;
+
+	uint32_t	_packedSize=0;
+	uint32_t	_rawSize=0;
+	uint32_t	_headerSize=0;
+	uint32_t	_type=0;
+	bool		_longHeaders=false;
+	uint32_t	_recursionLevel=0;
+};
+
+}
+
+#endif