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

[Elio Francesconi]

hi Sebastian,
thanks again for your time you spent with my issues.
I did some tests with a basic application, so to be reproducible, and it seems the issue on osxaudiosrc is a different one, I’ll try to create a base pipeline to explain better how the issue occurs.

In the mean time  I  created a simple pipeline so to test the osxaudiosrc module and I noticed that with this simple pipeline the audio captured with my iphone5 (iOS 7.0.3) is distorted.

To reproduce the issue I modified the tutorial2 using the pipeline below and I started on my linux client your script: ./client-PCMA.sh
osxaudiosrc ! audioconvert ! audioresample ! alawenc ! rtppcmapay ! udpsink host=192.168.1.6 port=5011

 Did I miss to set some osxaudiosrc properties or do you think it is a bug?

Thanks
Elio

On 09 Nov 2013, at 12:08, Sebastian Dröge <sebastian at centricular.com> wrote:

> 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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