linuxaudio.org

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First, what I would like to do is pick which channel I send audio to

on the RME 9632 card.=20

 My RME card is device 0. =20

 When I call this function:=20

snd_pcm_open(&handle,device,SND_PCM_STREAM_PLAYBACK,0)

 And set device =3D plughw:0,0   I get playback across all the RME

outputs.

 (Just using hw:0,0  without the "plug" prefix does not work for some

reason which may or may not matter.)

 So, how do I access the subdevices/channels? =20

 When I run aplay -l I only see 1/1 subdevices.

 Shouldn't I be able to set my device to hw:0,0,1 or plughw:0,0,1 to

access channel 2, for example?

 There's no .asoundrc.  Do I need it for this?

 Finally, when attempting multichannel alsa, I assume I need to

simply make an array of pointers to the same datatype as "handle" and

run through

 initializing each handle separately. =20

 In the first time thought the loop, I can get handle[0] and all its

parameters to initialize without errors. =20

 When I try to initialize handle[1] on a new device such as

plughw:0,0,1 I get an error that the device or resource is busy.=20

 I feel like I've hit  a brick wall here.  Perhaps I am out of my

league.  But, it feels tantilizingly close to working.

 Thanks guys/gals!!=20

 Grekim

 =20

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Content-Transfer-Encoding: quoted-printable

Content-Type: text/html; charset="utf-8"
 BODY { font-family:Arial, Helvetica, sans-serif;font-size:12px; First, what I would like to do is pick which channel I send audio to o=

n the RME 9632 card.

My RME card is device 0. 

When I call this function:  snd_pcm_open(&handle,device,SND_PCM_ST=

REAM_PLAYBACK,0)
And set device =3D plughw:0,0   I get playback across all the RME=

 outputs.

(Just using hw:0,0  without the "plug" prefix does not work for some r=

eason which may or may not matter.)
So, how do I access the subdevices/channels? 

When I run aplay -l I only see 1/1 subdevices.

Shouldn't I be able to set my device to hw:0,0,1 or plughw:0,0,1 to access =

channel 2, for example?

There's no .asoundrc.  Do I need it for this?
Finally, when attempting multichannel alsa, I assume I need to simply make =

an array of pointers to the same datatype as "handle" and run through

initializing each handle separately. 

In the first time thought the loop, I can get handle[0] and all its paramet=

ers to initialize without errors. 

When I try to initialize handle[1] on a new device such as plughw:0,0,1 I g=

et an error that the device or resource is busy.

I feel like I've hit  a brick wall here.  Perhaps I am out of my =

league.  But, it feels tantilizingly close to working.

Thanks guys/gals!!

Grekim
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