Fix for Microphone Streaming Inconsistencies (Booleans/Error Codes for Initialisation, Starting Streams and Recording)

[DarcyWilson-MU]

Overview

When using the MRTK2 Examples, specifically the Audio Demo related to the Windows Microphone Stream system, there would be issues when trying to switch the state of the microphone. A modification of the demo was made to initialise the stream using the Room stream type, record thirty seconds of audio, uninitialise it and then reinitialise it with the High Quality Voice stream type. However, the state of the microphone, whether it was initialised, recording or streaming, would never change and would just skip over the checks to see if they were still running or not. This would cause some errors where it would believe it hadn't started streaming or been initialised, and made it so attempting to switch between stream types would fail as it had never been uninitialised, or recordings would never start.

This addresses those issues and adds more error codes to both the scripts and plugin files to make it easier to spot issues. The reasoning being that the SUCCESS code, where correct as it is working, isn't too descriptive and could possibly lead to

Changes

• Added lines to set state Booleans [d40a22a]
• Changed the return type of methods to better reflect current stream state [31f3323]
• Added new stream error codes [319f2b6]

[DarcyWilson-MU]

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[keveleigh]

Looks good to me! Though, I'm not sure anybody is monitoring this repo at Microsoft anymore 😢 I can ping some folks and see

[keveleigh]

nit: should we edit these comments throughout, now that we aren't returning Success?

[DarcyWilson-MU]

Not a problem! Appreciate you taking a look, and no stress if no-one see's it, I know it's been out of active development for a while, but I was fixing some things on my end for a project and thought I may PR it just in case, haha. Still on MRTK2 for the time being.

Can definitely chuck those comments out though, wasn't sure whether to keep them or toss them as I didn't want to muck around with the codebase too much. Will make another edit in just a moe.