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Re: MusicSequenceFileLoad Returns -1 on iOS10 (AudioToolbox/MusicPlayer)
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Re: MusicSequenceFileLoad Returns -1 on iOS10 (AudioToolbox/MusicPlayer)

  • Subject: Re: MusicSequenceFileLoad Returns -1 on iOS10 (AudioToolbox/MusicPlayer)
  • From: down to this <email@hidden>
  • Date: Sun, 09 Oct 2016 18:37:08 +0900
Quick follow up on this - I had opened up Radar #28425770 for this issue on 9/22/2016 and noticed today that it was recently updated to "Duplicate of 28327056 (Open)". 

Two questions:

#1. Is the planned fix for this scheduled in an upcoming beta? I've just tested this with 10.1 Beta 2 and the issue is still occurring in this update. 

#2. Is there any known work-around for this? I'm happy to patch my app with a work-around but everything I have tried thus far has not been successful. 

Best,

Derek

Date: Fri, 23 Sep 2016 07:41:32 +0900
From: down to this <email@hidden>
To: email@hidden
Subject: Re: MusicSequenceFileLoad Crash on iOS10
        (AudioToolbox/MusicPlayer)
Message-ID:
        <CADuxWc8xf1YLKtbXeoVqPzhO3cy9tQE5=7gyMA4KEmavf6EOQg@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Sven -

Thanks for the followup on this! Sounds like we may be experiencing a
slightly different issue. I haven't had any problems loading MIDI files on
iOS9 (or 8 or 7 actually).


Douglas -

Some additional information that I've confirmed:

- MusicSequenceFileLoad() is simply returning a -1 (not crashing).

- I was able to test myself on an iPad Mini 4th Gen and iPhone 6+ and
was not able to reproduce the issue on these devices.

- I asked a friend to try on his iPad Pro (Cellular) and he was _not_
able to reproduce it.

- Seems that this is only happening on my iPad Pro (Wifi) model - but
I haven't been able to find anyone else with an iPad Pro Wifi to
confirm it happens on other devices as well.

- I tried making the object that calls these MIDI functions static
just to rule out the possibility of memory issues and the problem was
still able to be recreated.


I opened Radar #28425770 and have attached a sample project which is
actually my actual app with pretty much everything except this issue
cut out of it. This includes all MIDI files as well. This issue
happens regardless of which MIDI file is used.


Thanks for your support Douglas!

Best,

Derek
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