windows-xp/Source/XPSP1/NT/inetsrv/iis/iisrearc/iisplus/ulw3/compressionapi.h

/*
 * api.h
 */
typedef HRESULT (WINAPI *PFNCODEC_INIT_COMPRESSION)(VOID);
typedef HRESULT (WINAPI *PFNCODEC_INIT_DECOMPRESSION)(VOID);

typedef VOID (WINAPI *PFNCODEC_DEINIT_COMPRESSION)(VOID);
typedef VOID (WINAPI *PFNCODEC_DEINIT_DECOMPRESSION)(VOID);

typedef HRESULT (WINAPI *PFNCODEC_CREATE_COMPRESSION)(PVOID *context, ULONG flags);
typedef HRESULT (WINAPI *PFNCODEC_CREATE_DECOMPRESSION)(PVOID *context, ULONG flags);

typedef HRESULT (WINAPI *PFNCODEC_COMPRESS)(
	PVOID		context, 
	CONST PBYTE	input, 
	LONG		input_size, 
	PBYTE		output, 
	LONG		output_size,
	PLONG		input_used,
	PLONG		output_used,
	INT			compression_level
);

typedef HRESULT (WINAPI *PFNCODEC_DECOMPRESS)(
	PVOID		context,
	CONST PBYTE	input,
	LONG		input_size,
	PBYTE		output,
	LONG		output_size,
	PLONG		input_used,
	PLONG		output_used
);

typedef VOID (WINAPI *PFNCODEC_DESTROY_COMPRESSION)(PVOID context);
typedef VOID (WINAPI *PFNCODEC_DESTROY_DECOMPRESSION)(PVOID context);

typedef HRESULT (WINAPI *PFNCODEC_RESET_COMPRESSION)(PVOID context);
typedef HRESULT (WINAPI *PFNCODEC_RESET_DECOMPRESSION)(PVOID context);