Ok, i have a hw mixing capable card, but i do have interest in getting
the dmix/dsnoop/asym thing working. Well, i defined a "pasymed" device
like this:
------.asoundrc start
#asym fun start here. we define one pcm device called "dmixed"
pcm.dmixed {
ipc_key 1025
type dmix
slave.pcm "hw:0,0"
}
#one called "dsnooped" for capturing
pcm.dsnooped {
ipc_key 1026
type dsnoop
slave.pcm "hw:0,0"
}
#and this is the real magic
pcm.asymed {
type asym
playback.pcm "dmixed"
capture.pcm "dsnooped"
}
#a quick plug plugin for above device to do the converting magic
pcm.pasymed {
type plug
slave.pcm "asymed"
}
#a ctl device to keep xmms happy
ctl.pasymed {
type hw
card 0
}
------.asoundrc end
Now i should be able to test that device "pasymed" with the aplay
command:
aplay -D pasymed foo.wav
This command does not give any error messages on my machine. It also
does not produce any sound. The soundfile is rather short and aplay
exits fine after the duration of the soundfile. So i figure it is played
back correctly. The question is though: Where is it played to? I have
three playback devices on my cs46xx soundcard:
[EMAIL PROTECTED]:~$ cat /proc/asound/devices
1: : sequencer
0: [0- 0]: ctl
8: [0- 0]: raw midi
18: [0- 2]: digital audio playback
17: [0- 1]: digital audio playback
16: [0- 0]: digital audio playback
24: [0- 0]: digital audio capture
33: : timer
But i have only one speaker pair connected to the soundcard outs. I just
tested the two analoge outs [don't have any digital equipment for
digital out]. The pasymed signal doesn't come out anywhere.. I think
it's a dmix issue, because
aplay -D plug:dmix foo.wav
shows the exact same behaviour [no errors, no sound, normal termination
after duration of soundfile].. dsnoop is behaving weirdly, too. I just
recorded with
arecord -D pasymed -t wav -f cd foo.wav
and it records just a little chunk of audio repeated over and over. It
seems to be the first period that is in the buffer after opening the
device [for i get a file filled with silence when i start recording at a
silent point]. I put up the .wav at
http://mistatapas.ath.cx:8888/foo.wav
I get the exact same result with
aplay -D plug:dsnooped -t wav -f cd foo.wav
Here's some more info about my setup:
[EMAIL PROTECTED]:~$ uname -a
Linux mango.fruits.de 2.4.22 #1 SMP Wed Nov 19 13:43:03 CET 2003 i686
GNU/Linux
[EMAIL PROTECTED]:~$ cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version 1.0.1.
Compiled on Jan 22 2004 for kernel 2.4.22 (SMP) with versioned symbols.
[EMAIL PROTECTED]:~$ cat /proc/asound/cards
0 [CS46xx ]: CS46xx - Sound Fusion CS46xx
Sound Fusion CS46xx at 0xcffef000/0xcfe00000, irq 5
Flo
--
signature :)
-------------------------------------------------------
The SF.Net email is sponsored by EclipseCon 2004
Premiere Conference on Open Tools Development and Integration
See the breadth of Eclipse activity. February 3-5 in Anaheim, CA.
http://www.eclipsecon.org/osdn
_______________________________________________
Alsa-devel mailing list
[EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/alsa-devel
