[pulseaudio-discuss] Cannot start Pulse Audio when using ALSA plug-in as sound source

[Krzysztof Cieniawski]

Calling `pasuspender -- speaker-test --nloops=1 --test=wav --channels=2
--device=temp`  cause error:
`Connection failure: Connection refused
pa_context_connect() failed: Invalid argument`
With command  `speaker-test --nloops=1 --test=wav --channels=2
--device=temp` no sound is given to headphones just quiet white noise but
it may be hardware fault (cable). Command work without errors.

pt., 9 sie 2019 o 16:26 Russell Treleaven <rtreleaven at bunnykick.ca>
napisał(a):

> Ok cool.
> One more sanity test.
> `pasuspender -- speaker-test --nloops=1 --test=wav --channels=2
> --device=temp`
> Works as expected?
>
>
> On Fri, Aug 9, 2019 at 10:23 AM Krzysztof Cieniawski <
> kcieniawski at gmail.com> wrote:
>
>> I have added `hint` field in `/usr/share/alsa/alsa.conf.d/iopdm.conf`
>> file where I have configuration of my plug-in and when I list pcm's with
>> hints it shows up.
>>
>>
>> pt., 9 sie 2019 o 15:56 Russell Treleaven <rtreleaven at bunnykick.ca>
>> napisał(a):
>>
>>> `aplay -L` lists pcm's with hints.
>>> If you add a hint to your pcm does it show up in the output of `aplay
>>> -L` ?
>>>
>>> On Fri, Aug 9, 2019 at 9:32 AM Krzysztof Cieniawski <
>>> kcieniawski at gmail.com> wrote:
>>>
>>>> Hello!
>>>>
>>>> I am developing ALSA plug-in based on ALSA PCM External Plugin SDK.
>>>> Plug-in is source plug and has to convert PDM signal from microphone input
>>>> to PCM used by Linux. I have succeeded to compile it using cmake and I have
>>>> copied it to ALSA lib directory. I have updated *.asoundrc* file and
>>>> make right PCM connection. I am able to record sound using this plug-in
>>>> with *arecord* command. Unfortunatelly when I start *PulseAudio*
>>>> server I got error message:
>>>>
>>>> I: [pulseaudio] (alsa-lib)dlmisc.c: Cannot open shared library /usr/lib/aarch64-linux-gnu/alsa-lib/libasound_module_pcm_iopdm.so
>>>> I: [pulseaudio] alsa-util.c: Error opening PCM device temp: No such device or address
>>>> E: [pulseaudio] module.c: Failed to load module "module-alsa-source" (argument: "device=temp"): initialization failed.
>>>> E: [pulseaudio] main.c: Module load failed.
>>>> E: [pulseaudio] main.c: Failed to initialize daemon.
>>>>
>>>> I would like to use PulseAudio on top of my device because I am using
>>>> Amazon Alexa which use PulseAudio. How to get things right? Where is the
>>>> problem? If there is other solution available I would be grateful for it to.
>>>> On the path given in this error message there is this plug-in.
>>>>
>>>> I would be very grateful for any help!
>>>>
>>>> Regards,
>>>>
>>>> Krzysztof Cieniawski
>>>> _______________________________________________
>>>> pulseaudio-discuss mailing list
>>>> pulseaudio-discuss at lists.freedesktop.org
>>>> https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
>>>
>>>
>>>
>>> --
>>> Sincerely,
>>>
>>> Russell Treleaven
>>> sip:rtreleaven at sip.bunnykick.ca;transport=tcp
>>>
>>> _______________________________________________
>>> pulseaudio-discuss mailing list
>>> pulseaudio-discuss at lists.freedesktop.org
>>> https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
>>
>> _______________________________________________
>> pulseaudio-discuss mailing list
>> pulseaudio-discuss at lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
>
>
>
> --
> Sincerely,
>
> Russell Treleaven
> sip:rtreleaven at sip.bunnykick.ca;transport=tcp
>
> _______________________________________________
> pulseaudio-discuss mailing list
> pulseaudio-discuss at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
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