Moved check_conf function from xeve_app implementation to xeve API

[dkozinski]

No description provided.

[dariusz-f]

Looks good.
This change is suggested by FFmpeg community.

[dkozinski]

The idea behind moving implementation of check_conf function from the xeve library client to the xeve library implementation comes from ffmpeg communinty suggestions following code review of our libxeve wrapper implementation for ffmpeg project.
Our implementation uses function analogous to the check_conf used by the xeve_app reference implementation and it's practicaly exact copy of the check_conf function.
FFmpeg community suggested us moving this function to xeve library.
If the sequece of the checks and tests (from check_cfg function) must be done just right before using codec and it is essential for proper codec behaviour it will be good idea to provide the client such a function that will check whether the codec configuration is OK.
It will make the user free up from responsibility of providing its own implementation of check_conf function and what is more important release the user from the need of making it up to date evertytime when it is needed.

[kpchoi]

Please find my comments.

[kpchoi]

I'd like to suggest the followings;

• change the "xeve_check_conf()" API name to "xeve_param_check()"
• use "XEVE_PARAM* param" instead of "XEVE_CDSC* cdsc" for input argument, because it would be kinds of utility function for parameter setting.

[dkozinski]

Done

[mpeg5]

LGTM