The purpose of this is to ensure that the recording processing with make
visible forwards progress, by ensuring that different steps in the
recording pipeline don't block each-other.
This fixes:
- recordings being processed prevent archiving new recordings from running
- recordings can't be published until all pending recording processing
completes
It does allow recording archive, sanity, process, publish steps to run in
parallel with each other, but at most one recording will be in each step at
a time. (I.e. while one recording is being processed, a different recording
can be published). This may potentially increase CPU usage for some users.
If you expect this to be a problem, you can set resource controls (see
`man systemd.resource-control`) on the bbb_record_core.slice systemd unit.
The code was previously passing the message string provided by the user
directly to jQuery - which works okish if the first character is '<' since
it'll parse it as HTML, but the chat messages don't. As a result, it was
sometimes being parsed as a selector, failing, and raising an exception.
The fix is to put the chat message into a DOM node (have the browser parse
the HTML) before doing the jQuery operation to modify the link targets.
Fixes#3670
Chrome frame has been discontinued for quite a while. The playback code actually
does work in IE if you install an extra codec pack or switch the video format used.
Due to the extra delays added by setting up the closed captions, it happens more
often that the writing.js code will attempt to initialize popcorn on the video
element before the video element actually exists on the page.
(This was always a problem, it's just worse now)
Add a synchronization point which will delay the popcorn initialization until the
video element is ready.
Instead of assuming that wav files have 44 byte headers (they usually
don't - freeswitch adds some metadata tags), add a super-simple wave
file parser that just finds the offset where the audio data actually
starts.
It's no longer used anywhere in the recording processing, and the one
remaining use in the sanity script can be replaced with a (less buggy!)
function from the video EDL code.
Use a function that handles parameters correctly when updating the
timestamp in the url for links, fix indentation in caption loading code.
Treat exceptions when checking for url existence as errors.
