[pjsip] Sound problem pjsua at raspberry pi

Bill Gardner billg at wavearts.com
Wed May 14 15:28:46 EDT 2014


Try increasing PJMEDIA_SND_DEFAULT_PLAY_LATENCY from 140 to say 200 or 
more? Seems that 140 msec should be plenty though. I'm stumped.

Bill

On 5/14/2014 3:09 PM, Herbert Falter wrote:
> With options:
>  pjsua --play-file test.wav --ec-tail 0 --clock-rate 8000
> >>> cc 1 0
> 21:05:41.772    pjsua_aud.c  Conf connect: 1 --> 0
> 21:05:41.774    pjsua_aud.c  .Set sound device: capture=-1, playback=-2
> 21:05:41.775    pjsua_app.c  ..Turning sound device ON
> 21:05:41.776    pjsua_aud.c  ..Opening sound device PCM at 8000/1/20ms
> 21:05:41.826   conference.c  .Port 1 (test.wav) transmitting to port 0 
> (default:CARD=Device)
> Success
> >>> ^C
> Doesn't better
> herbert
> *Gesendet:* Mittwoch, 14. Mai 2014 um 21:04 Uhr
> *Von:* "Herbert Falter" <herbert-f at gmx.de>
> *An:* "pjsip list" <pjsip at lists.pjsip.org>
> *Betreff:* Re: [pjsip] Sound problem pjsua at raspberry pi
> Hi,
> I know this: cc 1 0.
> The quality ist too bad:
> >>> cc 1 0
> 21:03:14.477    pjsua_aud.c  Conf connect: 1 --> 0
> 21:03:14.479    pjsua_aud.c  .Set sound device: capture=-1, playback=-2
> 21:03:14.480    pjsua_app.c  ..Turning sound device ON
> 21:03:14.482    pjsua_aud.c  ..Opening sound device PCM at 16000/1/20ms
> 21:03:14.534     ec0xeed450  ...AEC created, clock_rate=16000, 
> channel=1, samples per frame=320, tail length=200 ms, latency=0 ms
> 21:03:14.537   conference.c  .Port 1 (test.wav) transmitting to port 0 
> (default:CARD=Device)
> Success
> >>> 21:03:15.978     alsa_dev.c !ca_thread_func: overrun!
> 21:03:36.780     alsa_dev.c !ca_thread_func: overrun!
> *Gesendet:* Mittwoch, 14. Mai 2014 um 20:48 Uhr
> *Von:* "Bill Gardner" <billg at wavearts.com>
> *An:* pjsip at lists.pjsip.org
> *Betreff:* Re: [pjsip] Sound problem pjsua at raspberry pi
> Hi Herbert,
>
> The Master/sound underflows are indicative of a problem. You'd expect 
> these if CPU is exhausted, but since the AEC is off pjsip is using 
> negligible CPU. Perhaps try to increase the number of audio buffers in 
> ALSA driver?
>
> Also in order to play a file to audio device using pjsua, you need to 
> specify WAV file using --play-file and then manually connect the WAV 
> file port to sound port using cc command.
>
> Bill
> On 5/14/2014 2:36 PM, Herbert Falter wrote:
>
>     Hi Bill,
>     thanks for your answer.
>     I have tried --ec-tail 0 --clock-rate 8000.  It's not better, the
>     same.
>     Log:Connect src port # (empty to cancel):
>     >>> cc 0 0
>     20:29:51.604    pjsua_aud.c !Conf connect: 0 --> 0
>     20:29:51.606    pjsua_aud.c  .Set sound device: capture=-1,
>     playback=-2
>     20:29:51.608    pjsua_app.c ..Turning sound device ON
>     20:29:51.609    pjsua_aud.c ..Opening sound device PCM at 8000/1/20ms
>     20:29:51.658   conference.c  .Port 0 (default:CARD=Device)
>     transmitting to port 0 (default:CARD=Device)
>     Success
>     >>> 20:29:51.664 Master/sound !Underflow, buf_cnt=0, will generate
>     1 frame
>     20:29:51.666   Master/sound Underflow, buf_cnt=0, will generate 1
>     frame
>     20:29:51.669   Master/sound Underflow, buf_cnt=0, will generate 1
>     frame
>     20:29:51.672   Master/sound Underflow, buf_cnt=0, will generate 1
>     frame
>     20:29:51.675   Master/sound Underflow, buf_cnt=0, will generate 1
>     frame
>     20:29:51.678   Master/sound Underflow, buf_cnt=0, will generate 1
>     frame
>     20:29:51.681   Master/sound Underflow, buf_cnt=0, will generate 1
>     frame
>     20:29:51.684   Master/sound Underflow, buf_cnt=0, will generate 1
>     frame
>     20:29:51.687   Master/sound Underflow, buf_cnt=0, will generate 1
>     frame
>     20:29:52.189   Master/sound Buffer size adjusted from 960 to 880
>     (eff_cnt=640)
>     .....
>     The follows works fine:
>
>     playfile THEFILE.WAV
>
>     this didn't work:
>     pjsua --play-file THEFILE.WAV
>     What can I do?
>
>     *Gesendet:* Mittwoch, 14. Mai 2014 um 18:58 Uhr
>     *Von:* "Bill Gardner" <billg at wavearts.com>
>     *An:* pjsip at lists.pjsip.org
>     *Betreff:* Re: [pjsip] Sound problem pjsua at raspberry pi
>     Hi Herbert,
>
>     Try disabling AEC and see if the "cc 0 0" test works better. AEC
>     may be consuming all the CPU?
>
>     Bill
>     On 5/14/2014 12:50 AM, Herbert Falter wrote:
>
>         Hi,
>
>         I have a Raspberry PI with Raspbian and a USB-Sound-Device.
>
>         **** Liste der Hardware-Geräte (PLAYBACK) ****
>         Karte 0: Device [USB PnP Sound Device], Gerät 0: USB Audio
>         [USB Audio]
>           Sub-Geräte: 1/1
>           Sub-Gerät #0: subdevice #0
>         Karte 1: ALSA [bcm2835 ALSA], Gerät 0: bcm2835 ALSA [bcm2835 ALSA]
>           Sub-Geräte: 8/8
>           Sub-Gerät #0: subdevice #0
>           Sub-Gerät #1: subdevice #1
>           Sub-Gerät #2: subdevice #2
>           Sub-Gerät #3: subdevice #3
>           Sub-Gerät #4: subdevice #4
>           Sub-Gerät #5: subdevice #5
>           Sub-Gerät #6: subdevice #6
>           Sub-Gerät #7: subdevice #7
>
>         The USB-Sound Device works great (very good quality) with alsa:
>
>         aplay /usr/share/scratch/Media/Sounds/Vocals/Singer2.wav
>
>         and recording with:
>
>         arecord -D plughw:0 --duration=10 -f cd -vv  test.wav
>
>         I read the site: http://trac.pjsip.org/repos/wiki/sound-problems.
>
>         The playback-sound at "cc 0 0" is very bad.
>         Abort at:
>
>         >>> cc 1 0
>         22:52:13.499 pjsua_aud.c  Conf connect: 1 --> 0
>         22:52:13.500 pjsua_aud.c  .Set sound device: capture=-1,
>         playback=-2
>         22:52:13.502 pjsua_app.c  ..Turning sound device ON
>         22:52:13.504 pjsua_aud.c  ..Opening sound device PCM at 16000/1/20ms
>         22:52:13.558 ec0x2c7460  ...AEC created, clock_rate=16000,
>         channel=1, samples per frame=320, tail length=200 ms, latency=0 ms
>         22:52:13.561 conference.c  .Port 1
>         (/usr/share/scratch/Media/Sounds/Vocals/Singer2.wav)
>         transmitting to port 0 (default:CARD=Device)
>         Success
>         >>> pjsua: ../src/pjmedia/conference.c:1498: read_port:
>         Assertion `cport->rx_buf_count <= cport->rx_buf_cap' failed.
>         Abgebrochen
>
>         What can I do?
>
>         My configuration is:
>         sudo apt-get update
>         sudo apt-get upgrade
>         sudo apt-get install alsaplayer-alsa libv4l-dev libx264-dev
>         libssl-dev libasound2-dev
>         cd
>         sudo wget http://www.pjsip.org/release/2.2/pjproject-2.2.tar.bz2
>         sudo tar xvfj pjproject-2.2.tar.bz2
>         cd pjproject-2.2/
>         sudo ./configure --disable-video --disable-l16-codec
>         --disable-gsm-codec --disable-g722-codec --disable-g7221-codec
>         --disable-ilbc-codec
>         echo "PJSIP: use ALSA instead of Portaudio"
>         sudo cat << PJ > pjlib/include/pj/config_site.h
>         #define PJMEDIA_AUDIO_DEV_HAS_ALSA 1
>         #define PJMEDIA_AUDIO_DEV_HAS_PORTAUDIO 0
>         PJ
>         sudo make dep && make
>         sudo make install
>
>         sudo cp
>         /home/pi/pjproject-2.2/pjsip-apps/bin/pjsua-armv6l-unknown-linux-gnueabihf
>         /usr/bin/pjsua
>
>         Please help.
>
>         bye
>         herbert
>
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