iOS: AURemoteIO at 0x31ab420: IOThread exiting with error 0x10004006

[Sebastian Dröge]

On Sa, 2013-11-09 at 09:45 +0100, Elio Francesconi wrote:
> Hi all,
> I’m developing a stream audio for iOS platforms and I’m facing a new issue with my rtp stream.
> I got an error while I’m streaming audio using “osxaudiosrc”, the audio received is distorted and I noticed this error:
> 
> 2013-11-09 08:17:33.668 ipDoor[314:8403] 08:17:33.668 ERROR:     [0x7e44000] 1207: AUIOClient_StartIO failed (560034163)
> 0:00:39.088255000 [333m  314[00m  0x2a737e8 [31;01mERROR  [00m [00;04m             default gstosxcoreaudiocommon.c:128:gst_core_audio_io_proc_start:<osxaudioringbuffer0>[00m AudioOutputUnitStart failed: sqa!
> 2013-11-09 08:17:33.670 ipDoor[314:8903] 08:17:33.670 ERROR:     [0x7f70000] >aurioc> 1455: AURemoteIO at 0x31ab420: IOThread exiting with error 0x10004006
> 2013-11-09 08:17:33.672 ipDoor[314:8403] 08:17:33.672 ERROR:     [0x7e44000] 1207: AUIOClient_StartIO failed (560034163)
> 0:00:39.092167000 [333m  314[00m  0x2a737e8 [31;01mERROR  [00m [00;04m             default gstosxcoreaudiocommon.c:128:gst_core_audio_io_proc_start:<osxaudioringbuffer0>[00m AudioOutputUnitStart failed: sqa!
> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
> 
> 
> Note: if I use audiotestsrc the audio stream received is good..
> 
> Can someone give me some hints to debug this issue?

Can you file a bug about this too, including the complete debug log and
the exact device you're using. Ideally also including a patch to one of
the tutorial applications to reproduce the problem :)

I assume we're doing something wrong with the initialization of the iOS
audio API there. As a first step I would look at what values we pass
there and if others maybe work better (different buffer sizes, sample
rates, number of channels, etc). And then check what other applications
are doing.

-- 
Sebastian Dröge <sebastian at centricular.com>
Centricular Ltd - http://www.centricular.com
Expertise, Straight from the Source
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