Sound problems with linphone

[ykmag]

Hi all.
I am trying to implement a phone system, using one Sheeva with asterisk as server, and one Sheeva with linphone as SIP client. To the client I have connectet a Native Union handset
http://www.nativeunion.com/us/wiredproducts/mmoshi-02.html. The conecction to the handset is a Native Union USB dongle sound card
http://www.nativeunion.com/us/accessories/usb-adp/usb-adaptor.html.
Using lsusb, the sound card reports as:

Code: Select all

Bus 001 Device 008: ID 0c76:1607 JMTek, LLC. audio controller

.
This device has hw support for 48000 Hz sample rate
When playing 48000 Hz streams (using mpg123) all is ok. playing 44100 streams is also ok (with a cpu load of approx 4%).
When receiving calls (not absolutetly certain about sample rate, but my guess is 8000 Hz) I get buffer overruns in ALSA, and the sound is delayed for playback, but not for capture) Capture works for some seconds, before everything goes heywire...
My /etc/asound.conf:

Code: Select all

pcm.moshi {
    type hw
    card Audio
}

pcm.linphoneout {
    type plug
    slave {
        pcm "moshi"
        rate 48000
    }
}

pcm.linphonein {
   type dsnoop
   slave {
      pcm  "moshi"
      rate 48000
   }
   bindings {
      0 0
   }
}

pcm.linphone {
    type asym
    playback.pcm "linphonein"
    capture.pcm "linphoneout"
}


ctl.moshi {
    type hw
    card Audio
}

ctl.linphonein {
    type hw
    card Audio
}

ctl.linphoneout {
    type hw
    card Audio
}


I have a second usb sound card that is default. The config for that is not included. It makes no difference if is included or not.
I have tried some different codecs, but none works. I have tried linpone on a windows 7 machine connected to the same asterisk server, performes flawless.
Last note, when I answer a incomming call, the CPU load for linphone peaks to 99%

Could this be softfloat related (ALSA/linphone bitrate conversion )?
I am not completely lost, but realy running out of options.
Any toughts are very wellcome!

[ykmag]

No one to the rescue?

[ykmag]

Ok, since no one can help, there is only one thing to do, and that is to find the big shovel and start digging...
Well before I start, I would like to know how linphone and speex was built, was it built with fixed point or not? Where can I find that information? If not, the pkgbuild should be changed for these two packages, I it also (at least for speex) to enamble arm5e asm as well, I could do everything needed if I just could get the directions of where to do it.

[WarheadsSE]

Since this is a sheeva, I will assume it is a v5 soft float, so that might speak to "fixed point", as our entire v5 repo is -mabi=soft

[ykmag]

Since this is a sheeva, I will assume it is a v5 soft float, so that might speak to "fixed point", as our entire v5 repo is -mabi=soft

Does that mean that building with fixed_point, will have no or littler performance impact?

[WarheadsSE]

No it means I am unsure of what fixed_point does for this package, in these circumstances.

[ykmag]

Ok, I have built speex with fixed point, just have to test when I get home (have built it remote, but can't realy test it without the handset ).

[ykmag]

That did the trick. Building speex with :

Code: Select all

 -enable-fixed-point -enable-arm5e-asm

Now I can use a Sheeva as a phone, connected to another sheeva with asterisk.

Is there any chance to get that into the repo?

[crimsonredmk]

We need a stockphoto of a call center representative holding a SheevaPlug up to her face and smiling while talking to it first.

[kmihelich]

speex with those flags has been rebuilt and is in the repos now. This was a github issue as well that I had forgotten about since I never got a reply back from the original issue creator.