how to set SliceCodingParams

hi,all:

My env: dm8168 and dvr rdk 4.0

　My question：

  1) Encoding  support  SliceCodingParams  configuration  and  dynamic change it ?

  2) If I  want to dynamic change SliceCodingParams, how can I do?  In Mcfw API, I did not find  the  interface.

   Thanks!

typedef struct IH264ENC_SliceCodingParams {

  XDAS_Int8            sliceCodingPreset     ;

  XDAS_Int16           sliceMode             ;

  XDAS_Int16           sliceUnitSize         ;

  XDAS_Int8            sliceStartOffset[IH264ENC_MAX_NUM_SLICE_START_OFFSET] ;

  XDAS_Int8            streamFormat          ;

} IH264ENC_SliceCodingParams ;