#!/bin/sh

#pkill -f /dev/video || mpv --no-osc --no-input-default-bindings --input-conf=/dev/null --demuxer-lavf-format=v4l2 --geometry=-0-0 --autofit=30% --title="mpvfloat" --profile=low-latency --untimed /dev/video0

onecam() {
	mpv --no-osc --no-input-default-bindings --input-conf=/dev/null mpv --demuxer-lavf-format=v4l2 --geometry=-0-0 --autofit=30% --title="mpvfloat" --profile=low-latency --untimed $1
	}

#Get all possible cameras
allposs=$(v4l2-ctl --list-devices | sed ':a;N;$!ba;s/):\n/):/g')
cameras=$(echo "$allposs" | awk '/):/ {print $1}')

# If there's only one camera
[ "$(echo "$cameras" | wc -l)" -lt 2 ] &&
	{ input=$(v4l2-ctl --list-devices | sed -n "/^$cameras/,/video*/p" | tail -n 1 | awk '{print $1}') ; onecam "$input"; exit ;}

chosen=$(echo "$cameras" | dmenu -i -p "Which camera ?")
input=$(v4l2-ctl --list-devices | sed -n "/^$chosen/,/video*/p" | tail -n 1 | awk '{print $1}')

onecam "$input"