[pulseaudio-discuss] Need help to enable echo cancel in pulseaudio

Mon Jul 25 06:31:07 PDT 2011

Hi,

        Thanks for the reply.

      Now I am able to run the pulseaudio daemon with echo cancel source and
sinks without any problem on my ubuntu desktop system.
Now I want to enable echo cancel module on my omap4 (PANDA) board.
I followed the same steps as i have done for ubuntu desktop.
Pulseaudio daemon is working fine but when i tried to load the Echo cancel
module, the daemon is getting killed.
I think the problem is with the sample rate.I have tried with both 48000 and
44100hz rates but the same problem occurs.
Please find the attached log when i load the echo cancel module.

Thanks

Regards,
Abdul Moiz.

On Sun, Jul 24, 2011 at 7:13 PM, Colin Guthrie <gmane at colin.guthr.ie> wrote:

> 'Twas brillig, and ABDUL MOIZ at 22/07/11 10:02 did gyre and gimble:
> > Hi,
> >        Thanks for the reply.
> >
> >        As adviced by you,I have followed the procedure given in the link
> >
> >
> > http://colin.guthr.ie/2010/09/compiling-and-running-pulseaudio-from-git/
> >
> >       I got the code from the git source as told in the guide and
> > everything was going well but i got error at this step
> >
> >         $ src/pulseaudio -n -F src/default.pa <http://default.pa> -p
> > $(pwd)/src/.libs/ -vvvv
> >
> >  You can check the attached log file to see the error.
>
> Interesting. Perhaps this indicates some kind of corruption in the
> database files used for restoring volume and devices... can you save the
> files in ~/.pulse/ somewhere (we may want to analyse them later to
> prevent this happening again) and then just trash that whole folder so
> you can start up "clean"?
>
> >  Then I have again restarted the build process by giving the path to be
> > /usr while configuring  i.e
> >
> >        $ ./configure --prefix=/usr
> >
> >  And the build was successful, and I can able to run the pulseaudio
> daemon.
>
> Strange... this shouldn't matter much.
>
> > In the CLI terminal, i have changed the default source and sink to echo
> > cancel as shown below:
> >
> > <<set-default-source
> alsa_input.pci-0000_00_1b.0.analog-stereo.echo-cancel
> > <<set-default-sink alsa_output.pci-0000_00_1b.0.analog-stereo.echo-cancel
> >
> > Now when i test using gst pipeline, i can observe that echo & noise has
> > been reduced.
> > To confirm whether echo cancel is working or not , i tried to see
> > verbose log as shown below:
> >
> > $ pulseaudio -v
> >
> > But I am getting the following:
> >
> > I: main.c: setrlimit(RLIMIT_NICE, (31, 31)) failed: Operation not
> permitted
> > I: main.c: setrlimit(RLIMIT_RTPRIO, (9, 9)) failed: Operation not
> permitted
> > I: core-util.c: Successfully gained nice level -11.
> > I: main.c: This is PulseAudio 0.98-dev-438-g6add-dirty
> > I: main.c: Page size is 4096 bytes
> > I: main.c: Machine ID is fstl-laptop.
> > I: main.c: Session ID is
> > 2012bf02773ecb9a7c891fbb4e25bc80-1311316492.289922-1263349109.
> > I: main.c: Using runtime directory /home/fstl/.pulse/fstl-laptop-runtime.
> > I: main.c: Using state directory /home/fstl/.pulse.
> > I: main.c: Using modules directory /usr/lib/pulse-0.98/modules.
> > I: main.c: Running in system mode: no
> > E: pid.c: Daemon already running.
> > E: main.c: pa_pid_file_create() failed.
>
>
> This is expected. You can only run one instance of PA at a time.
>
> > when i kill the pulseaudio daemon, then also the samething coming.
> > And also I have tried the below commands:
> >
> > $ pulseaudio --kill
> > $ killall pulseaudio
> > $ killall -9 pulseaudio
> > $ rm -rf ~/.pulse*
> > $ sudo rm -rf /tmp/pulse*
> >
> > But still "pulseaudio -v" is not working.
> > and "pulseaudio --kill" also being executed, but pulseaudio daemon is
> > still running.
>
> This is fully expected. PA supports an autospawn feature and it's highly
> likely that something running on your desktop is requesting PA to be
> run. e.g. gnome-volume-control-applet, or pretty much any gtk application.
>
> > So the problem is pulseaudio instance is not getting killed properly.
> > Can you please help me to get clean start and kill of pulseaudio daemon
> > and as well as to get the log messages of running pulseaudio daemon.
>
> When developing on PA, I very much recommend setting autospawn=no in
> /etc/pulse/client.conf or ~/.pulse/client.conf to ensure that the system
> version of PA does not automatically respawn itself.
>
> I think you're generally getting a bit muddled up between your system's
> PA install and the one you are running yourself. It's a little tricky to
> make things behave themselves, but the guide I linked to previously
> mentions this, so it's probably worthwhile reading the whole article
> again to make sure nothing has been missed.
>
> Hope that helps.
>
> Col
>
>
> --
>
> Colin Guthrie
> gmane(at)colin.guthr.ie
> http://colin.guthr.ie/
>
> Day Job:
>  Tribalogic Limited [http://www.tribalogic.net/]
> Open Source:
>  Mageia Contributor [http://www.mageia.org/]
>  PulseAudio Hacker [http://www.pulseaudio.org/]
>  Trac Hacker [http://trac.edgewall.org/]
>
> _______________________________________________
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>
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I: client.c: Created 7 "Native client (UNIX socket client)"
I: protocol-native.c: Got credentials: uid=1000 gid=1000 success=1
I: source.c: Created source 2 "alsa_input.platform-soc-audio.analog-stereo.echo-cancel" with sample spec s16le 2ch 48000Hz and channel map front-left,front-right
I: source.c:     device.master_device = "alsa_input.platform-soc-audio.analog-stereo"
I: source.c:     device.class = "filter"
I: source.c:     device.intended_roles = "phone"
I: source.c:     device.echo-cancel.name = "alsa_input.platform-soc-audio.analog-stereo.echo-cancel"
I: source.c:     device.description = "Echo-Cancel Source alsa_input.platform-soc-audio.analog-stereo.echo-cancel on SDP4430 Analog Stereo"
I: source.c:     device.icon_name = "audio-input-microphone"
I: sink.c: Created sink 1 "alsa_output.platform-soc-audio.analog-stereo.echo-cancel" with sample spec s16le 2ch 48000Hz and channel map front-left,front-right
I: sink.c:     device.master_device = "alsa_output.platform-soc-audio.analog-stereo"
I: sink.c:     device.class = "filter"
I: sink.c:     device.intended_roles = "phone"
I: sink.c:     device.echo-cancel.name = "alsa_output.platform-soc-audio.analog-stereo.echo-cancel"
I: sink.c:     device.description = "Echo-Cancel Sink alsa_output.platform-soc-audio.analog-stereo.echo-cancel on SDP4430 Analog Stereo"
I: sink.c:     device.icon_name = "audio-card"
I: source.c: Created source 3 "alsa_output.platform-soc-audio.analog-stereo.echo-cancel.monitor" with sample spec s16le 2ch 48000Hz and channel map front-left,front-right
I: source.c:     device.description = "Monitor of Echo-Cancel Sink alsa_output.platform-soc-audio.analog-stereo.echo-cancel on SDP4430 Analog Stereo"
I: source.c:     device.class = "monitor"
I: source.c:     device.icon_name = "audio-input-microphone"
I: alsa-source.c: Trying resume...
I: alsa-source.c: Resumed successfully...
I: alsa-source.c: Starting capture.
I: resampler.c: Forcing resampler 'copy', because of fixed, identical sample rates.
I: resampler.c: Using resampler 'copy'
I: resampler.c: Using float32le as working format.
I: source-output.c: Created output 0 "Echo-Cancel Source Stream" on alsa_input.platform-soc-audio.analog-stereo with sample spec s16le 2ch 48000Hz and channel map front-left,front-right
I: source-output.c:     media.name = "Echo-Cancel Source Stream"
I: source-output.c:     media.role = "filter"
I: source-output.c:     module-stream-restore.id = "source-output-by-media-role:filter"
I: alsa-sink.c: Trying resume...
I: alsa-sink.c: Resumed successfully...
I: alsa-sink.c: Starting playback.
I: resampler.c: Using resampler 'speex-float-3'
I: resampler.c: Using float32le as working format.
I: resampler.c: Choosing speex quality setting 3.
I: sink-input.c: Created input 0 "Echo-Cancel Sink Stream" on alsa_output.platform-soc-audio.analog-stereo with sample spec s16le 2ch 48000Hz and channel map front-left,front-right
I: sink-input.c:     media.name = "Echo-Cancel Sink Stream"
I: sink-input.c:     media.role = "filter"
I: sink-input.c:     module-stream-restore.id = "sink-input-by-media-role:filter"
I: module.c: Loaded "module-echo-cancel" (index: #18; argument: "").
I: module-device-restore.c: Storing volume/mute/port for device sink:alsa_output.platform-soc-audio.analog-stereo.echo-cancel.
I: module-device-restore.c: Storing volume/mute/port for device source:alsa_output.platform-soc-audio.analog-stereo.echo-cancel.monitor.
I: module-device-restore.c: Storing volume/mute/port for device source:alsa_input.platform-soc-audio.analog-stereo.echo-cancel.
I: module-stream-restore.c: Storing volume/mute/device for stream sink-input-by-media-role:filter.
I: module-stream-restore.c: Storing volume/mute/device for stream source-output-by-media-role:filter.
I: client.c: Freed 7 "pactl"
I: protocol-native.c: Connection died.
E: module-echo-cancel.c: Doing resync
E: module-echo-cancel.c: Playback after capture (-672673), drop sink 129192
E: module-echo-cancel.c: playback too far ahead (107409), drop source 20620
Killed