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Re: Sandboxing with Core Audio
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Re: Sandboxing with Core Audio

  • Subject: Re: Sandboxing with Core Audio
  • From: Christian Floisand <email@hidden>
  • Date: Thu, 05 Dec 2013 11:00:25 -0500
Thanks for the info, Eric!  

I was getting very suspicious that my issue was going to be something along these lines.  
I guess the best option then is to give the user the option of picking the audio output device, and hoping that they have at least 
one that will will work in a sandboxed app.  

Cheers, 
Christian


On 2013-12-05, at 4:41 AM, Ploytec <email@hidden> wrote:

HI Christian

The Tascam driver uses the HAL plugin design. In this design, the audio driver is a plugin that loads into the apps's process. As sandboxed apps can't access the hardware, the app can't access the device.
That's the reason why the new AudioServer API is now the preferred audio driver design (its loaded into the sole coreaudiod process).
The audio drivers using the old kernel core audio driver design don't have his problem.
A new driver will be released soon.


Best regards
Eric
Le 5 déc. 2013 à 00:20, Christian Floisand <email@hidden> a écrit :

Hello, 

I am finishing up an app for OS X that needs to connect to the user's default audio output device set in System Preferences (among other things, 
the app will play a sine tone for a selected frequency).  

Everything works fine when Sandboxing is not enabled, but when it is, connecting to an external USB audio interface seems to fail when I 
test it on my computer.  These are the two violations I'm getting: 

kernel: Sandbox: sandboxd: deny mach-lookup com.apple.coresymbolicationd
sandboxd: deny iokit-open AudioUserClientTascamUSBMKII (this is my USB interface)

I have set the following entitlements:
com.apple.security.device.usb -- true
com.apple.security.temporary-exception.audio-unit-host -- true
Christian Floisand
BSc | BMus | MMus
(416) 428 - 0146
www.christianfloisand.com
email@hidden




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 >Re: Sandboxing with Core Audio (From: Ploytec <email@hidden>)

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