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RE: Wrapper class for Cocoa Audio Units in Carbon Hosts
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RE: Wrapper class for Cocoa Audio Units in Carbon Hosts


  • Subject: RE: Wrapper class for Cocoa Audio Units in Carbon Hosts
  • From: Stéphane Beauchemin <email@hidden>
  • Date: Fri, 7 Aug 2009 15:37:37 -0400
  • Thread-topic: Wrapper class for Cocoa Audio Units in Carbon Hosts

I haven't had the time to look at the code. However, about a year ago, I have written a wrapper for Cocoa UI in Carbon host. I remember dropping it because of problems like the one you are describing. Specially the "idle" problem in some host. If someone has a fix I would be curious to see it.

Stephane

-----Original Message-----
From: coreaudio-api-bounces+sbeauchemin=email@hidden [mailto:coreaudio-api-bounces+sbeauchemin=email@hidden] On Behalf Of tahome izwah
Sent: August-07-09 5:20 AM
To: email@hidden
Subject: Re: Wrapper class for Cocoa Audio Units in Carbon Hosts

Hi Seth,

I just tried your wrapper (in 10.5.8) and the Cocoa view shows up ok
but I'm getting crashes in AULab (on quit) and in AudioHijack Pro when
opening up my AU... Also, the Carbon UI doesn't seem to get any idle
time, so the displays in my Cocoa (in-Carbon-)view won't update. Any
ideas?

Thanks
--th

This is the crash in AULab:

Thread 0 Crashed:
0   com.apple.HIToolbox           	0x94dc7838
HIObjectIsAccessibilityIgnored + 24
1   com.apple.HIToolbox           	0x94dc7716
AXNotificationAXUIElementNotifyForAXUIElement + 38
2   com.apple.HIToolbox           	0x94dc762b
AXNotificationHIObjectNotifyForObject + 97
3   com.apple.HIToolbox           	0x94dc75c8 AXNotificationHIObjectNotify + 50
4   com.apple.HIToolbox           	0x94dc1bee
HIApplication::PossibleMainWindowChange() + 70
5   com.apple.HIToolbox           	0x94dbadf7 _ShowHideWindows + 1341
6   com.apple.HIToolbox           	0x94dba8b8 ShowHide + 38
7   com.apple.AppKit              	0x93d6ad83 -[NSCarbonWindow
_reallyDoOrderWindow:relativeTo:findKey:forCounter:force:isModal:] +
1774
8   com.apple.AppKit              	0x93ba405c -[NSWindow
orderWindow:relativeTo:] + 105
9   com.apple.AppKit              	0x93bb8809 -[NSWindow orderOut:] + 50
10  com.apple.AppKit              	0x93bfa1ad -[NSWindow _close] + 435
11  com.apple.CoreFoundation      	0x95d46b25 -[NSArray
makeObjectsPerformSelector:] + 565
12  com.apple.AppKit              	0x93c985ef -[NSApplication
_deallocHardCore:] + 433
13  com.apple.AppKit              	0x93c9730d -[NSApplication terminate:] + 742
14  com.apple.audio.aulab         	0x000783cb 0x1000 + 488395
15  com.apple.AppKit              	0x93bb7e8f -[NSApplication
sendAction:to:from:] + 112
16  com.apple.AppKit              	0x93c66b64 -[NSMenu
performActionForItemAtIndex:] + 493
17  com.apple.AppKit              	0x93c66869 -[NSCarbonMenuImpl
performActionWithHighlightingForItemAtIndex:] + 220
18  com.apple.AppKit              	0x93c664ef -[NSMenu
performKeyEquivalent:] + 866
19  com.apple.AppKit              	0x93c64d94 -[NSApplication
_handleKeyEquivalent:] + 492
20  com.apple.AppKit              	0x93b81ac7 -[NSApplication sendEvent:] + 3997
21  com.apple.AppKit              	0x93adefe7 -[NSApplication run] + 867
22  com.apple.AppKit              	0x93aac1d8 NSApplicationMain + 574
23  com.apple.audio.aulab         	0x00002223 0x1000 + 4643
24  com.apple.audio.aulab         	0x00002151 0x1000 + 4433
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References: 
 >Wrapper class for Cocoa Audio Units in Carbon Hosts (From: Seth Nickell <email@hidden>)
 >Re: Wrapper class for Cocoa Audio Units in Carbon Hosts (From: Brian Willoughby <email@hidden>)
 >Re: Wrapper class for Cocoa Audio Units in Carbon Hosts (From: Seth Nickell <email@hidden>)
 >Re: Wrapper class for Cocoa Audio Units in Carbon Hosts (From: tahome izwah <email@hidden>)

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