Request to expose text track cues

[forbesjo]

This is a enhancement request for exposing a text track cues. The purpose of this request is to allow for custom text track display.

[joeyparrish]

Makes sense to me. I'll tentatively schedule it for v2.2, but it is lower priority than bug fixes and HLS work. We will try to come up with a design first, publish a design doc, then implement.

[joeyparrish]

In #886, @hghazzi asks to know which Player instance cues came from. I've marked that as a duplicate and I'm adding a requirement here that there should be some way to know which Player instance is associated with the display instance.

If the text display factory is configurable per-player (as opposed to some global registration), this requirement could be met by the application itself. This is a very lazy example of what I mean, and does not reflect the final interface being designed by @ismena:

player.configure({
  textDisplayFactory: function() {
    return new MyCustomTextDisplay(player);
  }
});

Then, any call the Player makes to new config.textDisplayFactory() will create an instance of MyCustomTextDisplay which knows exactly which Player instance it belongs to.

[hussam-i-am]

@joeyparrish We would like to collaborate with your team to develop the new implementation of the text tracks plugin.

Not sure when the timeline for 2.2.0 is, but we would really like to help out and get it in there since our current workaround does not work well when we have multiple players on a page.

[ismena]

@hghazzi Sorry for the delay, I'm working on this as I write this (l literally have the CL on my other monitor this second :)).
I'll try to get it into code review this week or early next week and bully the rest of the team to review it ASAP :)

[hussam-i-am]

Awesome! Can you add me as a reviewer or let me know when a PR is up? Would love to take a look.

[ismena]

Unfortunately we can't add external reviewers to the team's code reviews, but I'll make sure to let you know as soon as it's out.