onaudioprocess not called on iOS (Safari)

[Danielku15]

It seems that iOS still has some troubles with the Web Audio API. The onaudioprocess event is never triggered. There can be various reasons why the events are not called:

http://stackoverflow.com/questions/14521170/safari-6-0-2-not-calling-onaudioprocess
http://stackoverflow.com/questions/17087119/use-scriptprocessornode-in-iphone-safari
https://bugs.webkit.org/show_bug.cgi?id=122560

On a quick test none of the workarounds made the event to be triggered (calling context.resume, add input node, change construction function, assign node to global variable to prevent GC collection,...). This needs some further investigation.

[gburlet]

Hi @Danielku15,

I think this issue needs to be reopened. Unless demo.alphatab.new/alphaSynth has not been updated to include the latest commit, I can't get any audio playing on iOS (chrome or safari browsers).

I also can't get alphaTab score play-along functionality working on mobile so I currently have it disabled in my project and am just showing the plain score.

[vin-ni]

Would also be interested in a fix