* check if env var set and choose device
* clean up for env var
* app modification
* move getEnvVar function to header
* fork example
* spacing adjust
* review comments
* use hipGetErrorName to throw errors
[ROCm/rocdecode commit: 8ec38d2d24]
* * rocDecode/HEVC: Fixed a couple of issues with reconfiguration of decoder when video size is changed.
- Picture width and height variables were interchangeably used to represent coded picture size and display size, resulting reconfiguration errors. Now we use different variables to represent coded and display sizes.
- Fixed a file overwriting issue in video size change case, where the display size can remain the same when coded size changes with specific cropping offsets.
* * rocDecode/HEVC: Added some fixes to decoder reconfiguration.
- Added support for MD5 calculation in reconfigure flush callback. This fixed MD5 check failure on conformance streams with size changes.
- Fixed total decoded frame number report with reconfigure when file dump or MD5 is not enabled. We need to call flush with reconfigure unconditionally (but with different actions).
- Added the missing reconfigure flush when coded size is not changed but display size is changed.
* * rocDecode/HEVC: Corrected an error in GetDecodedWidth() method. Should use coded_width_, instead of disp_width_.
[ROCm/rocdecode commit: ccd813a2da]
* Add support for rocDecReconfigureDecoder API
* adrress reviewer's comemnts
* Add doxygen comment for ReconfigureDecoder function
[ROCm/rocdecode commit: 875994bb4f]
* * rocDecode/HEVC: Added support for MD5 message digest generation.
- Command option "-md5" triggers MD5 calculation and output.
* * rocDecode/HEVC: Changed C type casting to C++ type casting.
[ROCm/rocdecode commit: ad20961c4a]
* code cleanup - use google style for videodecode sample and RocVideoDecoder class - no functional change
* rename SaveSurfToFile to SaveFrameToFile
[ROCm/rocdecode commit: 851c537904]
Rajy Rawther
Lakshmi Kumar
Aryan Salmanpour
kiritigowda
jeffqjiangNew