I have been trying to create a virtual device to record the internal audio of my sound card using pure ALSA. After googling a lot, I found a .asoundrc
file¹ that is very near of what I am looking for:
pcm.mycard {
type hw
card 0
}
ctl.mycard {
type hw
card 0
}
pcm.myconvert {
type plug
slave {
pcm "myrecord"
format S16_LE
}
}
pcm.myrecord {
type file
format "raw"
slave.pcm "mycard"
file "| oggenc -Q -q6 -r -B %b -C %c -R %r -o /tmp/record-$(date +%%Y-%%m-%%d_%%H%%M%%S).ogg -"
}
pcm.!default{
type asym
playback.pcm "myconvert"
capture.pcm "mycard"
}
This configuration makes possible to record a ogg
file with all audio played in my computer. What I would like to do now, is to modify the pcm.myrecord
part of the configuration, so that the audio is "streamed" in a virtual card that I could capture later with let's say, arecord
. I would be glad if someone could help me with this.
I tried this: How do I create virtual ALSA device from which I can record everything that is played? but that did not work for me. Below, the output from arecord -L
:
muammar@zarathustra /tmp
% arecord -L !10015
null
Discard all samples (playback) or generate zero samples (capture)
default:CARD=PCH
HDA Intel PCH, CS4208 Analog
Default Audio Device
sysdefault:CARD=PCH
HDA Intel PCH, CS4208 Analog
Default Audio Device
front:CARD=PCH,DEV=0
HDA Intel PCH, CS4208 Analog
Front speakers
dmix:CARD=PCH,DEV=0
HDA Intel PCH, CS4208 Analog
Direct sample mixing device
dsnoop:CARD=PCH,DEV=0
HDA Intel PCH, CS4208 Analog
Direct sample snooping device
hw:CARD=PCH,DEV=0
HDA Intel PCH, CS4208 Analog
Direct hardware device without any conversions
plughw:CARD=PCH,DEV=0
HDA Intel PCH, CS4208 Analog
Hardware device with all software conversions
default:CARD=Loopback
Loopback, Loopback PCM
Default Audio Device
sysdefault:CARD=Loopback
Loopback, Loopback PCM
Default Audio Device
front:CARD=Loopback,DEV=0
Loopback, Loopback PCM
Front speakers
surround21:CARD=Loopback,DEV=0
Loopback, Loopback PCM
2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=Loopback,DEV=0
Loopback, Loopback PCM
4.0 Surround output to Front and Rear speakers
surround41:CARD=Loopback,DEV=0
Loopback, Loopback PCM
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Loopback,DEV=0
Loopback, Loopback PCM
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Loopback,DEV=0
Loopback, Loopback PCM
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Loopback,DEV=0
Loopback, Loopback PCM
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
dmix:CARD=Loopback,DEV=0
Loopback, Loopback PCM
Direct sample mixing device
dmix:CARD=Loopback,DEV=1
Loopback, Loopback PCM
Direct sample mixing device
dsnoop:CARD=Loopback,DEV=0
Loopback, Loopback PCM
Direct sample snooping device
dsnoop:CARD=Loopback,DEV=1
Loopback, Loopback PCM
Direct sample snooping device
hw:CARD=Loopback,DEV=0
Loopback, Loopback PCM
Direct hardware device without any conversions
hw:CARD=Loopback,DEV=1
Loopback, Loopback PCM
Direct hardware device without any conversions
plughw:CARD=Loopback,DEV=0
Loopback, Loopback PCM
Hardware device with all software conversions
plughw:CARD=Loopback,DEV=1
Loopback, Loopback PCM
Hardware device with all software conversions
Thanks.