RtlGetCompressionWorkSpaceSize

NTSTATUS __stdcall RtlGetCompressionWorkSpaceSize(
        UINT16 CompressionFormatAndEngine,
        UINT64 *CompressBufferWorkSpaceSize,
        UINT64 *CompressFragmentWorkSpaceSize){
  if( (unsigned __int8)CompressionFormatAndEngine < 2u )
    return -1073741811;
  if( (unsigned __int8)CompressionFormatAndEngine > 4u )
    return -1073741217;
  return((__int64(__fastcall *)(_WORD, UINT64 *, UINT64 *))RtlWorkSpaceProcs[(unsigned __int8)CompressionFormatAndEngine])(
           CompressionFormatAndEngine & 0xFF00,
           CompressBufferWorkSpaceSize,
           CompressFragmentWorkSpaceSize);
}

Referenced by:

EtwpInitializeCompressedWriter
EtwpInitializeCompression
PopHiberInitializeResources
SMKM_STORE_MGR::SmCompressCtxStart
ST_STORE::StStart
SmDecompressBuffer