From: cmst@live.com To: alsa-devel@alsa-project.org Date: Fri, 8 Nov 2013 14:15:30 +0000 Subject: Re: [alsa-devel] How to apply rate conversion in asound.conf

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Date: Wed, 6 Nov 2013 17:30:25 +0100 From: clemens@ladisch.de To: cmst@live.com; alsa-devel@alsa-project.org Subject: Re: [alsa-devel] How to apply rate conversion in asound.conf

Dolevo Jay wrote:

...

pcm.!default { type plug slave.pcm multi }

pcm.multi { slaves.a.pcm "hw:0,1"; slaves.b.pcm "hw:1,1"; ...

My purpose is to apply rate conversion to the "hw:1,1" and have 44100 rate out.

All slaves must use the same rate.

The easiest way is apply this to the plug plugin:

pcm.!default { type plug slave { pcm multi rate 44100 } }

Regards, Clemens _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel

Hi,

What you suggested worked perfect but I implemented the rate conversion in my software for some specific reasons. What I need to do now is to have a aosund.conf which has dmix into multi plugins together. So, here is my multi configuration:

---

pcm.!default { type plug slave.pcm multi }

pcm.multi { type multi; slaves.a.pcm "hw:0,1"; slaves.a.channels 2; slaves.b.pcm "hw:1,1"; slaves.b.channels 2;

    bindings.0.slave a;
    bindings.0.channel 0;
    bindings.1.slave a;
    bindings.1.channel 1;
    bindings.2.slave b;
    bindings.2.channel 0;
    bindings.3.slave b;
    bindings.3.channel 1;

}

---

The following dmix runs ok for 1,1 hardware:

pcm.dmixer { type dmix ipc_key 2048 slave { pcm "hw:1,1" } bindings { 0 0 1 1 } }

pcm.!default { type plug slave.pcm dmixer }

---

Could you please tell me how I can implement the second configuration with dmixer into the first one which has multi. So, basically how can I call a plugin inside of another plugin?

Thanks a lot.

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Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel

Hello,

I'd appreciate if someone could tell me even this is possible or not?

Thanks.