Win32 dll interface: MAP->BSP

Staging this for upcoming WLF/ROTT stuff. TODO: rewrite this to NOT be platform specific...

src/system/win32/EdgeLoaderInterface.h

@@ -0,0 +1,52 @@
+#pragma once
+
+struct DATA_STREAM
+{
+	unsigned long cbStream;
+	unsigned char* pbStream;
+};
+
+struct TAGGED_DATA
+{
+	const char* pcszTag;	// Data tag (e.g. "MAPHEAD" or "MAPDATA")
+	DATA_STREAM ds;
+};
+
+enum MAP_OPTION_TYPE
+{
+	MAP_OPTION_BOOL,
+	MAP_OPTION_INT,
+	MAP_OPTION_STRING
+};
+
+struct MAP_OPTION
+{
+	char* pszName;
+	MAP_OPTION_TYPE eType;
+	union
+	{
+		bool fValue;
+		int nValue;
+		char* pszValue;
+	};
+};
+
+struct STREAM_FACILITY
+{
+	// pfnReallocate() either allocates a new stream (if pds->pbStream is NULL) or reallocates the memory.
+	// If the memory is reallocated successfully, the old memory has been copied to the new memory block.
+	bool (__stdcall* pfnReallocate)(DATA_STREAM* pds, unsigned long cb);
+
+	// pfnDelete() deletes pds->pbStream and sets it to NULL.  It also sets pds->cbStream to zero.
+	void (__stdcall* pfnDelete)(DATA_STREAM* pds);
+};
+
+struct LOADER_HOST
+{
+	void* pvContext;
+	bool (__stdcall* pfnQuery)(void* pvContext, const char* pcszFacility, void** ppvFacility);
+};
+
+bool __stdcall Loader_Create (LOADER_HOST* pHost, const char* pcszName, void** ppvLoader);
+bool __stdcall Loader_GenerateMap (void* pvLoader, MAP_OPTION* prgOptions, INT cOptions, TAGGED_DATA* prgSources, INT cSources, DATA_STREAM* pdsTarget, char* pszCompanion, int cchMaxCompanion);
+void __stdcall Loader_DeleteLoader (void* pvLoader);