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#!/bin/sh
set -e
[ -n "$DEBUG" ] && set -x
# check requirements
for tool in wf-recorder wshowkeys pactl swq; do
if ! command -v "$tool" >/dev/null; then
printf "%s: %s not installed but required\n" "$(basename "$0")" "$tool" >&2
exit 1
fi
done
audio_output=${WF_AOUT}
audio_input=${WF_AIN}
video_output=${WF_VOUT}
showkeys=${WF_KEYS}
mux_sink=${WF_AMUX}
no_mux=
while getopts i:o:m:v:kMh opt; do
case "$opt" in
i) # audio in
audio_input="${OPTARG}" ;;
o) # audio out
audio_output="${OPTARG}" ;;
m) # mux
mux_sink="${OPTARG}" ;;
v) # output to record
video_output="${OPTARG}" ;;
k) # showkeys
showkeys=1 ;;
M) # no mux
no_mux=1 ;;
h|?)
printf "usage: %s [-iomvkM] [FILE]\n" "$(basename "$0")"
printf "\n"
printf " Launches wf-recorder(1) with optimized settings.\n"
printf " When FILE is omitted, \$HOME/Videos/rec_TIMESTAMP.mkv is used.\n"
printf "\n"
printf " -o \t\taudio output; defaults to default pulseaudio sink\n"
printf " -i \t\taudio input; defaults to default pulseaudio source, can be 'none'\n"
printf " -m \t\taudio mux sink; override creation of an pulseaudio sink for muxing\n"
printf " -v \t\toutput to record; limit to output, defaults to focused output (swq current output)\n"
printf " -k \t\tlaunches wshowkeys(1)\n"
printf " -M \t\tdon't create a audio mux sink\n"
printf "\n"
exit 2 ;;
esac
done
shift $((OPTIND - 1))
output_file=${1:-"${HOME}/Videos/rec_$(now).mkv"}
# setup defaults
[ -z "${audio_output}" ] && audio_output=$(pactl info | grep "Default Sink" | cut -d':' -f2 | xargs -L1)
[ -z "${audio_input}" ] && audio_input=$(pactl info | grep "Default Source" | cut -d':' -f2 | xargs -L1)
[ -z "${video_output}" ] && video_output=$(swq current output)
if [ "${audio_input}" = "none" ] && [ -z "${mux_sink}" ]; then
echo "mux: ${audio_output}"
mux_sink="${audio_output}"
fi
if [ -z "${mux_sink}" ] && [ -z "${no_mux}" ]; then
mux_sink=wf-mux
mux_sink_id=
output_loopback_id=
input_loopback_id=
prepare_mux_sink() {
mux_sink_id=$(pactl load-module module-null-sink sink_name="${mux_sink}" channels=2)
output_loopback_id=$(pactl load-module module-loopback sink="${mux_sink}" source="${audio_output}.monitor" remix=true)
input_loopback_id=$(pactl load-module module-loopback sink="${mux_sink}" source="${audio_input}" channels=1 remix=true)
}
teardown_mux_sink() {
pactl unload-module "${mux_sink_id}"
pactl unload-module "${output_loopback_id}"
pactl unload-module "${input_loopback_id}"
}
trap '{ teardown_mux_sink >/dev/null; }' EXIT
prepare_mux_sink >/dev/null
echo "mux: ${mux_sink}"
fi
if [ -n "${no_mux}" ]; then
mux_sink="${audio_output}.monitor"
fi
if [ -n "${showkeys}" ]; then
echo "Starting wshowkeys on ${video_output}"
echo "WARNING: currently the -o flag to force display to a specific output is not implemented" >&2
# -o ${video_output}
sway exec "wshowkeys -a bottom -a left -F 'Iosevka Sparkle 25' -t 1" >/dev/null
trap '{ pkill wshowkeys; }' EXIT
fi
set -x
wf-recorder -c h264_vaapi -d /dev/dri/renderD128 -x nv12 -o "${video_output}" -a "${mux_sink}.monitor" -f "${output_file}"
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