/usr/share/alsa/pcm/surround21.conf is in libasound2-data 1.0.28-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | #
# Hardware output from 2.1 speakers.
# Samples must be positioned:
# chn0 - front left
# chn1 - front right
# chn2 - LFE
#
pcm.!surround21 {
@args [ CARD DEV ]
@args.CARD {
type string
default {
@func getenv
vars [
ALSA_SURROUND21_CARD
ALSA_PCM_CARD
ALSA_CARD
]
default {
@func refer
name defaults.pcm.surround21.card
}
}
}
@args.DEV {
type integer
default {
@func igetenv
vars [
ALSA_SURROUND21_DEVICE
]
default {
@func refer
name defaults.pcm.surround21.device
}
}
}
type route
slave.pcm {
@func refer
name {
@func concat
strings [
"cards."
{
@func card_driver
card $CARD
}
".pcm.surround51." $DEV ":CARD=" $CARD
]
}
}
ttable.0.FL 1
ttable.1.FR 1
ttable.2.LFE 1
hint {
description "2.1 Surround output to Front and Subwoofer speakers"
device $DEV
}
}
|