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RtlGetCompressionWorkSpaceSize
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This function is used to determine the correct size of the WorkSpace buffer for the RtlCompressBuffer and RtlDecompressFragment functions. |
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| Declaration: |
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NTSTATUS RtlGetCompressionWorkSpaceSize(
__in USHORT CompressionFormatAndEngine,
__out PULONG CompressBufferWorkSpaceSize,
__out PULONG CompressFragmentWorkSpaceSize
);
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| FoxPro declaration: |
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DECLARE INTEGER RtlGetCompressionWorkSpaceSize IN ntdll;
SHORT CompressionFormatAndEngine,;
LONG @CompressBufferWorkSpaceSize,;
LONG @CompressFragmentWorkSpaceSize
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| Parameters: |
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CompressionFormatAndEngine [in]
Bitmask specifying the compression format and engine type.
CompressBufferWorkSpaceSize [out]
A pointer to a caller-allocated buffer receiving the size, in bytes, required to compress a buffer.
CompressFragmentWorkSpaceSize [out]
A pointer to a caller-allocated buffer receiving the size, in bytes, required to decompress a compressed buffer to a fragment. |
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| Return value: |
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| Returns STATUS_SUCCESS (0) or an appropriate error code. |
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| Usage: |
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#DEFINE COMPRESSION_FORMAT_LZNT1 2
#DEFINE COMPRESSION_ENGINE_STANDARD 0
#DEFINE COMPRESSION_ENGINE_MAXIMUM 0x0100
nFlag = BITOR( COMPRESSION_FORMAT_LZNT1,;
COMPRESSION_ENGINE_STANDARD )
STORE 0 TO nWorkSpaceCompress,;
nWorkSpaceDecompress
RETURN RtlGetCompressionWorkSpaceSize( m.nFlag,;
@nWorkSpaceCompress,;
@nWorkSpaceDecompress ) = STATUS_SUCCESS
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| Created: | 2010-08-12 18:29:44 | | Modified: | 2010-08-12 18:36:35 |
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