Update 2024-12-23 11:30 OpenBSD/amd64-t14

.bin/cam

@@ -1,4 +1,75 @@
 #!/bin/sh
-#ffplay -f v4l2 -list_formats all -i /dev/video0
-_SWM_WS=-1 ffplay -loglevel quiet -f v4l2 -input_format mjpeg -video_size 424x240 -i /dev/video0 $@ &
 
+for arg in $@
+do
+    case $arg in
+            start) shift; _start=1 ;;
+             stop) shift; _stop=1 ;;
+             list) shift; _list=1 ;;
+            mjpeg) shift; _format="-input_format mjpeg" ;;
+              raw) shift; _format="-input_format yuyv422" ;;
+           fullhd) shift; _res="-video_size 1920x1080" ;;
+               hd) shift; _res="-video_size 1280x720" ;;
+               sd) shift; _res="-video_size 640x360" ;;
+              max) shift; _res=max ;;
+    [0-9]*x[0-9]*) shift; _res="$arg" ;;
+                *) _dev="$arg" ;;
+    esac
+done
+
+
+#  set device
+if [ -z "$_dev" ]
+then
+    _dev="/dev/video0"
+fi
+
+# set resolution
+if [ x"$_res" == x"max" ]
+then
+    _res="-video_size $(ffplay -f v4l2 -list_formats all -i $_dev 2>&1 \
+                            | grep mjpeg \
+                            | cut -d":" -f4 \
+                            | cut -d " " -f2 \
+                            | tr-d " " \
+                       )"
+    _format="-input_format mjpeg"
+fi
+
+# list supported formats + resolutions
+if [ ! -z "$_list" ]
+then
+    ffplay -f v4l2 -list_formats all -i $_dev 2>&1 \
+        | grep '^\[video4linux2' \
+        | cut -d: -f3,4
+    exit 0
+fi
+
+if [ ! -z "$_start" ]
+then
+    ffplay -loglevel quiet -f v4l2 $_format $_res -i $_dev &
+    exit 0
+fi
+if [ ! -z "$_stop" ]
+then
+    # close enough...
+    pkill -f "ffplay -loglevel quiet -f v4l2"
+    exit 0
+fi
+
+if [ $(( _start + _stop + _list )) -eq 0 ]
+then
+    echo "usage: cam command [format] [resolution] [device]"
+    echo "  commands:"
+    echo "    start             - start camera"
+    echo "    stop              - stop camera"
+    echo "    list              - list supported formats and resolutions"
+    echo "  formats:"
+    echo "    sd                - set video size to 640x360"
+    echo "    hd                - set video size to 1280x720"
+    echo "    fullhd            - set video size to 1920x1080"
+    echo "    max               - set maximum video size (implies mjpeg format)"
+    echo "    <width>x<height>  - manually set resolution (see list command)"
+    echo "  <device>            - set video device (defaults to /dev/video0)"
+    exit 2
+fi