Arguments for tu_cf_luma ctxInc derivation and misc

[crosewarne]

One instance of the string 'trDepth' appears in the text, as input argument to '9.3.4.2.5 Derivation process of ctxInc for the syntax element tu_cbf_luma' and can be removed.

Arguments log2TbWidth alog2TbHeight are provided to this subclause but are not used.

In this subclause (and elsewhere), checking of BDPCM is via intra_bdpcm_flag but maybe should be via BdpcmFlag[ x ][ y ]. As general item, is it better to pass in a luma location for each context derivation and use this to access the (array) variable rather than directly referencing a decoded or inferred flag value. It happens for some context derivations but not others.

[bbross]

Thanks for reporting.

This will be fixed JVET-P2001-v7.