74 lines
2 KiB
Text
74 lines
2 KiB
Text
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#!/bin/sh
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# Clawdie operator USB audio default selector.
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#
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# Laptops with HDMI attached can expose the GPU HDMI codec as pcm0, making
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# FreeBSD choose HDMI as hw.snd.default_unit even when the internal speaker is
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# available. Prefer an internal analog-style playback device when one exists;
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# leave the system untouched if no better candidate can be identified.
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# PROVIDE: clawdie_live_audio
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# REQUIRE: FILESYSTEMS kld
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# BEFORE: sddm
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# KEYWORD: nojail
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. /etc/rc.subr
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name="clawdie_live_audio"
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rcvar="${name}_enable"
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start_cmd="${name}_start"
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stop_cmd=":"
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clawdie_live_audio_pick_unit() {
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[ -r /dev/sndstat ] || return 1
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awk '
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/^pcm[0-9]+:/ {
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unit = $1
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sub(/^pcm/, "", unit)
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sub(/:$/, "", unit)
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line = tolower($0)
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score = 0
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if (line ~ /hdmi|displayport/) score -= 100
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if (line ~ /realtek|analog|speaker|headphone|alc/) score += 80
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if (line ~ /play/) score += 10
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if (line ~ /default/) score += 1
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if (best == "" || score > best_score) {
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best = unit
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best_score = score
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best_line = $0
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}
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}
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END {
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if (best != "" && best_score > -100) {
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print best
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}
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}
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' /dev/sndstat
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}
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clawdie_live_audio_start() {
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_unit="$(clawdie_live_audio_pick_unit 2>/dev/null || true)"
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if [ -z "${_unit:-}" ]; then
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echo "${name}: no non-HDMI playback device selected"
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return 0
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fi
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_current="$(sysctl -n hw.snd.default_unit 2>/dev/null || true)"
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if [ "${_current}" = "${_unit}" ]; then
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echo "${name}: hw.snd.default_unit already ${_unit}"
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return 0
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fi
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if sysctl "hw.snd.default_unit=${_unit}" >/dev/null 2>&1; then
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echo "${name}: set hw.snd.default_unit=${_unit}"
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else
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echo "${name}: failed to set hw.snd.default_unit=${_unit}" >&2
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return 1
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fi
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}
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load_rc_config "$name"
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: "${clawdie_live_audio_enable:=YES}"
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run_rc_command "$1"
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