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#67 fixed Redundant DBBP flag setting for 2NxN parition tech jicheng

In the function parseDBBPFlag() of HTM11.0, the following code

#if MTK_DIS_SPBIP8X4_H0205
    UInt uiCurrPartNumQ = (pcCU->getPic()->getNumPartInCU() >> (2 * uiDepth)) >> 2;
    pcCU->setDBBPFlagSubParts(true, uiAbsPartIdx + 2*uiCurrPartNumQ, 1, uiDepth);

is originally intended to set the DBBP flag for the 2nd part of the 2NxN PU.

However, currently the DBBP flag is set outside of this function for all kinds of paritions. Therefore, the above code is redundant.

In addition, if the macro RWTH_DBBP_PACK_MODE is not 2NxN (encoder issue, since for DBBP mode, there is no restriction for partition size), the above code may set the wrong DBBP flag. Therefore, the above code should be removed. There will be no performance impact for CTC.

#68 fixed MV clipping bug in the sub-PU MPI default MV generation tech jicheng

In HTM11, there is a MV clipping operation in the sub-PU MPI default MV generation, which is obviously a bug and should be removed to align with the WD. (This kind of bug was previously solved by NTT_BUG_FIX_TK54, but here it is introduced again by MPI_SUBPU_DEFAULT_MV_H0077_H0099_H0111_H0133.)

In TComDataCU.cpp, line 4499, the following coded should be removed:

clipMv( cMv );
#69 fixed Missing of DcVal process and unclear DcOffset usage tech Tomohiro Ikai

In I. (I. Segmental depth intra coding process) in 3D-HEVC Draft Text 4 (H1001_v2), dcPred is derived but not used. It seems dcPred related process for recSamples is missing.

The fix is not clear but the attached H1001_v2_opt1 may help.

To me, the DcOffset usage is not clear in the following points. So the editorial improvement and some fix is to be desired.

(1) In SDC, DcOffset is not added to predSamples in I. but it is added in I. The reason why we should have two DcOffset related subclause is not clear to me. If we uses I. in both cases, the text can be much clear (See H1001_v2_opt2)

(2) In SDC, the variable DcVal is derived and used. But the derivation of DcVal is not clear. Specifically, When SDC is on, dcOffsetAvailFlag is false. Then DcOffset is not used both in DLT on case and in DLT off case. But when DLT is on, possibly we should add DcOffset before Idx2DepthValue[] (dcOffsetAvail should be true in this part?).

(3) DLT handling is separately specified in I. and I. That is difficult to understand so it should be specified either in I. or in I.

(4) If predModeIntra is not equal to INTRA_DMM_WFULL or INTRA_DMM_CPREDTEX, dcPred[0] is derived. But it is unclear whther DcOffset should be added in this case.

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