97 lines
3.0 KiB
Bash
Executable File
97 lines
3.0 KiB
Bash
Executable File
#!/bin/sh
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# defaults
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_format="-input_format mjpeg"
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_dev="/dev/video0"
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# loop through arguments
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for arg in $@
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do
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# set values based of arguments found
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case $arg in
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s|start) shift; _start=1 ;;
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k|kill|stop) shift; _stop=1 ;;
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l|list) shift; _list=1 ;;
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30) shift; _fps="-framerate 30" ;;
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60) shift; _fps="-framerate 60" ;;
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raw) shift; _format="-input_format yuyv422" ;;
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fullhd) shift; _res="-video_size 1920x1080" ;;
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hd) shift; _res="-video_size 1280x720" ;;
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sd) shift; _res="-video_size 640x360" ;;
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max) shift; _res="max" ;;
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[0-9]*x[0-9]*) shift; _res="-video_size $arg" ;;
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[0-9]) shift; _dev="$arg" ;;
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*) shift; _unknown="$_unknown $arg" ;;
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esac
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done
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if [ ! -z "$_unknown" ]
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then
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echo "unknown parameter(s): $_unknown"
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fi
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# set resolution
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if [ x"$_res" == x"max" ]
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then
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_res="-video_size $(ffplay -f v4l2 -list_formats all -i $_dev 2>&1 \
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| grep mjpeg \
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| xargs \
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| cut -d":" -f4 \
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| cut -d " " -f2 \
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)"
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_format="-input_format mjpeg"
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fi
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# list supported formats + resolutions
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if [ ! -z "$_list" ]
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then
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command="$(echo "ffplay -f v4l2 -list_formats all -i $_dev")"
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echo "starting: $command"
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$command 2>&1 \
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| grep '^\[video4linux2' \
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| cut -d: -f3,4 \
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| sed -e 's/^[ \t]*//;s/ : /: /'
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exit 0
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fi
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if [ ! -z "$_start" ]
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then
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command="ffplay -loglevel quiet -f v4l2 $_fps $_format $_res -i $_dev"
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echo "starting: $command" | xargs
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_SWM_WS=-1 $command > /dev/null 2>&1 &
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[ $? -ne 0 ] \
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&& echo "ffplay couldn't start"
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exit 0
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fi
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if [ ! -z "$_stop" ]
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then
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echo "stopping: ffplay -loglevel quiet -f v4l2"
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pkill -qf "ffplay -loglevel quiet -f v4l2"
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exit 0
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fi
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if [ $(( _start + _stop + _list )) -eq 0 ]
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then
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echo "usage: cam command [framerate] [format] [resolution] [device]"
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echo " commands:"
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echo " start - start camera"
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echo " stop - stop camera"
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echo " list - list supported formats and resolutions"
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echo " formats:"
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echo " raw - reads the yuyv422 stream (default is mjpeg)"
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echo " resolutions:"
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echo " sd - set video size to 640x360"
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echo " hd - set video size to 1280x720"
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echo " fullhd - set video size to 1920x1080"
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echo " max - set maximum video size (implies mjpeg format)"
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echo " <width>x<height> - manually set resolution (see list command)"
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echo " framerates:"
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echo " 30 - set framerate to 30 fps"
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echo " 60 - set framerate to 60 fps"
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echo " <device> - set video device number (defaults is 0)"
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echo
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echo " Note: ffplay may not start or fall back to internal defaults when options (or combinations thereof) are not supported by the camera."
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exit 2
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fi
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