WIP avs_stream documentation
WIP avs_stream documentation

Summary:
Make stream interface methods resistant to lack of implementation definitions

WIP avs_stream documentation

TODO: There is still this "#warning" to resolve.

Test Plan: n/a

Reviewers: marian, kfyatek

Subscribers: kfyatek, marian

Differential Revision: https://phabricator.avsystem.com/D3528

AVSystem/avs_commons,AVSystem/avs_commons,AVSystem/avs_commons,AVSystem/avs_commons