RtlGetCompressionWorkSpaceSize

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

Referenced by:

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