I am trying to get a SIP client running on my PI with Wolfson audio card. I can use aplay and arecord, work great but when I set up a call with PJSUA I get the following errors: 07:14:34.698 pjsua_app.c ..Turning sound device ON 07:14:34.698 pjsua_aud.c ..Opening sound device PCM@16000/1/20ms 07:14:34.707 alsa_dev.c ...ALSA lib pcm_hw.c:326:(snd_pcm_hw_hw_params) SNDRV_PCM_IOCTL_HW_PARAMS failed (-22): Invalid argument 07:14:34.707 pjsua_app.c ..Turning sound device ON 07:14:34.707 pjsua_aud.c ..Opening sound device PCM@44100/1/20ms 07:14:35.292 ec0x14005a8 ...Echo suppressor created, clock_rate=44100, channel=1, samples per frame=882, tail length=200 ms, latency=100 ms 07:14:35.293 pjsua_media.c .Call 0: initializing media.. 07:14:35.297 alsa_dev.c ALSA lib pcm_hw.c:587:(snd_pcm_hw_start) SNDRV_PCM_IOCTL_START failed (-12): Cannot allocate memory Anyone that can guide me in the right direction on how to get this running? Best Regards

PJSIP/PJSUA with Wolfson audio card

I am trying to get a SIP client running on my PI with Wolfson audio card.

I can use aplay and arecord, work great but when I set up a call with PJSUA I get the following errors:

07:14:34.698	pjsua_app.c ..Turning sound device ON
07:14:34.698	pjsua_aud.c ..Opening sound device PCM@16000/1/20ms
07:14:34.707	alsa_dev.c ...ALSA lib pcm_hw.c:326:(snd_pcm_hw_hw_params) SNDRV_PCM_IOCTL_HW_PARAMS failed (-22): Invalid argument
07:14:34.707	pjsua_app.c ..Turning sound device ON
07:14:34.707	pjsua_aud.c ..Opening sound device PCM@44100/1/20ms
07:14:35.292	ec0x14005a8 ...Echo suppressor created, clock_rate=44100, channel=1, samples per frame=882, tail length=200 ms, latency=100 ms

07:14:35.293 pjsua_media.c .Call 0: initializing media..

07:14:35.297

alsa_dev.c ALSA lib pcm_hw.c:587:(snd_pcm_hw_start) SNDRV_PCM_IOCTL_START failed (-12): Cannot allocate memory

Anyone that can guide me in the right direction on how to get this running?

Best Regards

0 nuntipat over 11 years ago in reply to e14 Contributor

Hi Ragnar,

I'm using your ~/.asoundrc file above and get this error

ALSA lib pcm_direct.c:877:(snd1_pcm_direct_initialize_slave) slave plugin does not support mmap interleaved or mmap noninterleaved access
ALSA lib pcm_dmix.c:1030:(snd_pcm_dmix_open) unable to initialize slave
aplay: main:682: audio open error: Invalid argument

Any help would be really appreciate.

Thank you,
Palm
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0 e14 Contributor over 11 years ago in reply to nuntipat

Is that with the 3.12 kernel? It needs a patch to enable memory mapped I/O.
georgpi has made a patched kernel available at https://blog.georgmill.de/2015/02/18/update-for-wolfson-audio-card-on-raspberry-pi/
Full discussion: http://www.element14.com/community/message/141324/l/cirrus-audio-b-and-jack#141324
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Ragnar
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0 nuntipat over 11 years ago in reply to e14 Contributor

Hi Ragnar,

No, I'm using the 3.18 kernel on raspberry pi with my custom build kernel to include support for WM8731 codec board from Mikroe. The driver is missing from 3.18 kernel so I copied the code from the older kernel. I've loaded these kernel modules (snd_soc_wm8731, snd_soc_rpi_proto) according to koalo's blog: I²S Audio Support for Raspberry Pi. It work perfectly and I can play and record sound but at 48kHz stereo (2ch) only. My task is to perform speech recognition using the HTK toolkit or Julius. These software only support mono sound input and at 16kHz or 8kHz sampling rate. Thus I think of using alsa plugin dsnooped to split sound from stereo to mono and to convert the sample rate in software. I've tried using mamp_emul plugin but it said the dsnooped can't work with mmap emulator. Can I just apply your patch here http://www.element14.com/community/message/141324/l/cirrus-audio-b-and-jack#141324 (http://www.element14.com/community/servlet/JiveServlet/download/141528-167303/cirrus_logic_mmap.patch.zip) or do I need to do other thing too?

Thank you,
Palm
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0 e14 Contributor over 11 years ago in reply to nuntipat

Not a Wolfson/Cirrus Logic card, then...

The patch is meant for the already heavily patched 3.12 kernel sources from Cirrus Logic.
On the other hand, it's a very small patch. It does apply cleanly to the 3.18 source (if using the "patch" command's -l switch) and I have been able build a 3.18 kernel with it.
It was the only thing I needed to do to get mmap going in the 3.12 bcm2708-i2s driver.
But I don't have any hardware to test it on 3.18.

So, the definite answer is: maybe
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0 0d0a over 11 years ago in reply to e14 Contributor

Any news on the driver front yet?
just bought a original wolfson for my pi b, running on latest raspbian kernel (3.18) . My intention is to replace a server running darkice with a pi running darkice to cast radiopatapoe on http://radiopatapoe.nl:8000/transit
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