Uncaught TypeError in StreamController occurs when video loops

[sureshmurali]

Environment

• The issue occurs in the latest reference client on http://dashif.org/reference/players/javascript/ and not just on my page
• The MPD passes the DASH-IF Conformance Tool on http://dashif.org/conformance.html
• The stream has correct Access-Control-Allow-Origin headers (CORS)
• There are no network errors such as 404s in the browser console when trying to play the stream
• The issue observed is not mentioned on https://github.com/Dash-Industry-Forum/dash.js/wiki/FAQ
• Link to playable MPD file: http://dash.edgesuite.net/akamai/bbb_30fps/bbb_30fps.mpd
• Dash.js version: 2.3.0 (master)
• Browser name/version: Chrome 54.0.2840.71 (64-bit)
• OS name/version: OS X Yosemite 10.10.5

Steps to reproduce

1. Load and play VOD mpd file (LOOP ENABLED)
2. Seek to near end of video
3. Video ends and playback initializes
4. Uncaught TypeError occurs in StreamController

Observed behaviour

No problem in video playback.

Console output

StreamController.js:310 Uncaught TypeError: Cannot read property 'getStreamInfo' of null

[dsparacio]

Already working on a fix for this for Multiperiod. I should be in this PR once I commit the latest
#1631

[dsparacio]

Resolved in #1631

[davemevans]

This is still an issue.

Appears to be because the PLAYBACK_ENDED callback in main.js is registered (and therefore called) before the StreamController callback (onEnded). main.js ultimately calls StreamController.reset which destroys the state later required by onEnded.

I suppose all of StreamController.getNextStream could be wrapped in an if (activeStream) or something.