fix(android): prevent changing resolution video track when video load

[YangJonghun]

Summary

fix(android): prevent changing resolution video track when video load

Motivation

• for prevent resolution video track changed by react prop when video is initially loaded
• In the above case, the isUsingContentResolution and selectTrackWhenReady flags don't work

Changes

• setSelectedVideoTrack doesn't call setSelectedTrack when loadVideoStarted is true, it will call within videoLoaded after video ready

Test plan

[KrzysztofMoch]

LGTM 👍

[freeboub]

Do you use contentStartTime ?

[YangJonghun]

@freeboub
no I don't

[freeboub]

@YangJonghun Ok, thank you (sorry for the very quick question !)
I don't really understand why you need to do this change as setSelectedTrack will not do anything in case of no video track available.
Additionally, instead of putting doing the setSelected track in onLoad, I think it would make more sense to do it in the onVideoTrackAvailable. In some case, we can have the track list changing during the playback, in that case the selectedVideoTrack will not be reapplied.

Let say it looks good to me, but please can you detail what is the issue of selecting video tracks when the video is not loaded ?

[YangJonghun]

@freeboub
I'm sorry to late response. I'm on vacation, so it's hard to provide any sample code.
It was a problem that video start buffer and stucked.
here is how to reproduce. (I'm not sure to reproduce. it was production's problem)

1. play master mpd source (includes mutiple resolution) with specific resolution track(specify with prop).
2. source prop change (also it is master and includes same resolutions).
3. player doesn't work(on load never called) before call seek function.

I know we have to set resolutions after source is ready, but developers can't easily recognize or misuses even they know that(it is so hard to debug)