The following code has been added to address issue #206

#ifdef __arm__
typedef       signed char         Char;
#else
typedef       char                Char;
#endif

It has been reported that defining Char to "signed char" created compilation issues in related to I/O functions in TVideoIOYuv.cpp/.h.

These can be addressed by removing the special case for ARM in typedef.h

There may still exist arithmetic problems with signed vs. unsigned calculations (as reported in #206).

HM-reference software resets the escapeDataPresent flag more often than it is specified in HEVC v2 specification.

In HEVC v2 specification, "7.3.8.11 Residual coding syntax" escapeDataPresent is being reset once per transform block.

In HM software 16.4 ​https://hevc.hhi.fraunhofer.de/svn/svn_HEVCSoftware/tags/HM-16.4/source/Lib/TLibDecoder/TDecSbac.cpp:1395 escapeDataPresentInGroup is being reset every subblock.

This discrepancy can cause bitstream be incorrectly decoded when some subblock other than lastSubBlock has no residuals.

In the section 8.4.4.2.2 Reference sample substitution process for intra sample prediction, these two lines are duplicated:

– a variable cIdx specifying the colour component of the current block, – a variable cIdx specifying the colour component of the current block.