Initial community commit

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

@@ -0,0 +1,52 @@
+/* Copyright (C) Teemu Suutari */
+
+#ifndef STONECRACKERDECOMPRESSOR_HPP
+#define STONECRACKERDECOMPRESSOR_HPP
+
+#include "Decompressor.hpp"
+
+namespace ancient::internal
+{
+
+class StoneCrackerDecompressor : public Decompressor
+{
+public:
+	StoneCrackerDecompressor(const Buffer &packedData,bool exactSizeKnown,bool verify);
+
+	virtual ~StoneCrackerDecompressor();
+
+	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);
+
+private:
+	static bool detectHeaderAndGeneration(uint32_t hdr,uint32_t &generation) noexcept;
+
+	void initialize(const Buffer &packedData,uint32_t hdr);
+	void decompressGen1(Buffer &rawData);
+	void decompressGen23(Buffer &rawData);
+	void decompressGen456(Buffer &rawData);
+	void decompressGen7(Buffer &rawData);
+	void decompressGen8(Buffer &rawData);
+
+	const Buffer	&_packedData;
+
+	uint32_t	_rawSize=0;
+	uint32_t	_packedSize=0;
+	uint32_t	_rleSize=0;
+	uint8_t		_modes[4];
+	uint8_t		_rle[3];
+	uint32_t	_generation;
+	uint32_t	_dataOffset;
+};
+
+}
+
+#endif