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
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
#!/bin/bash
# ^-- Add shebang even though it's sourced so vim highlights bash specific features properly
########################
# Include: Setup sound #
########################
writelog "Starting sound setup ..."
unset VOL
if [ -r "/run/hwinfo" ] && source "/run/hwinfo"; then
# On startup, the volume of Master, PCM, Speaker, etc. will be set to 100%
# Some hardware with builtin speakers might be a bit too loud then, so you can
# define an exception table here. Array key is "Manufacturer//Model"
declare -A VOLUME_EXCEPTIONS
VOLUME_EXCEPTIONS["Hewlett-Packard//HP Compaq 8200 Elite CMT PC"]="85%" # This is bwPC3
# Read
VOL=${VOLUME_EXCEPTIONS["${HW_MANUF}//${HW_MODEL}"]}
fi
# Default to maximum volume
if [ -z "$VOL" ]; then
VOL="100%"
fi
if true; then
# detecting which card is to be used
writelog --quiet "Detecting which sound card to use ..."
PROC="/proc/asound/cards"
if [ ! -r "$PROC" ]; then
writelog --quiet "'${PROC}' not found or not readable."
SOUND_CARD_INDEX=0
SOUND_CARD_COUNT=1
else
# Try to filter HDMI cards first
SOUND_CARD_INDEX=$(grep -v -i 'HDMI' "${PROC}" | grep -E -o '^[[:space:]]{0,2}[0-9]+[[:space:]]+' | head -n 1)
# If empty, try again with all
[ -z "${SOUND_CARD_INDEX}" ] && SOUND_CARD_INDEX=$(cat "${PROC}" | grep -E -o '^[[:space:]]{0,2}[0-9]+[[:space:]]+' | head -n 1)
if [ -z "${SOUND_CARD_INDEX}" ]; then
writelog --quiet "No sound card found."
SOUND_CARD_INDEX=0
fi
SOUND_CARD_COUNT=$(grep -E '^[[:space:]]{0,2}[0-9]+[[:space:]]+' "${PROC}" | wc -l)
fi
SOUND_CARD_INDEX="$(grep -E -o '[0-9]+' <<<$SOUND_CARD_INDEX)"
writelog --quiet "Detected sound card index is: $SOUND_CARD_INDEX"
writelog --quiet "Sound card count: $SOUND_CARD_COUNT"
# Adjust sound volume (playback)... Random mixer names we have encountered during testing
writelog --quiet "Setting up volume..."
(
amixer -q -c "$SOUND_CARD_INDEX" sset 'Master' "$VOL" unmute
amixer -q -c "$SOUND_CARD_INDEX" sset 'PCM' "100%" unmute
amixer -q -c "$SOUND_CARD_INDEX" sset 'CD' "100%" unmute
amixer -q -c "$SOUND_CARD_INDEX" sset 'Headphone' "100%" unmute
amixer -q -c "$SOUND_CARD_INDEX" sset 'Front' "100%" unmute
amixer -q -c "$SOUND_CARD_INDEX" sset 'Speaker' "100%" unmute
# Recording. It seems that (most) devices need the volume set to 0, so you
# don't hear your own mic input, but should be unmuted. Also on some cards,
# you need to set the cap option on the mic you want to use, while other cards
# will just ignore that option.
# Plus, most cards have a Capture mixer, which needs to be set to cap too, and
# have its volume turned up. (There'll probably be some cards that need yet
# another setup, but this works for now on 4 tested cards)
amixer -q -c "$SOUND_CARD_INDEX" sset 'Rear Mic Boost' "50%" cap unmute
amixer -q -c "$SOUND_CARD_INDEX" sset 'Rear Mic' "0%" cap unmute
amixer -q -c "$SOUND_CARD_INDEX" sset 'Front Mic Boost' "50%" cap unmute
amixer -q -c "$SOUND_CARD_INDEX" sset 'Front Mic' "0%" cap unmute
amixer -q -c "$SOUND_CARD_INDEX" sset 'Mic Boost' "50%" cap unmute
amixer -q -c "$SOUND_CARD_INDEX" sset 'Mic' "0%" cap unmute
amixer -q -c "$SOUND_CARD_INDEX" sset 'Capture' "100%" cap unmute
amixer -q -c "$SOUND_CARD_INDEX" sset 'Input Source' 'Mic'
amixer -q -c "$SOUND_CARD_INDEX" sset 'Input Source' 'Front Mic' # Let's hope nobody uses rear mic...
# fix random static noise when starting vmplayer when module snd_pcsp (not pcspkr) is loaded
amixer -q -c pcsp sset Master "0%" mute 2>/dev/null >&2
) 2>&1 | grep -v 'amixer: Unable to find'
writelog --quiet "Done setting up volume."
fi >> "${LOGFILE}" 2>&1 # Don't pipe here since it would spawn a subshell so all variable modifications would be lost
|
